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sneak/netwatch:main sneak/netwatch:next sneak/netwatch:prod sneak/netwatch:feature/mobile-detection-message sneak/netwatch:feat/responsive-mobile-redesign sneak/netwatch:feature/mobile-detection
sneak/netwatch:v1.0.0-rc2 sneak/netwatch:v1.0.0-rc1
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compare: sneak/netwatch:b80c8fd214aea4a63420db9d43790dbbd2ab2db2
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sneak/netwatch:next sneak/netwatch:main sneak/netwatch:prod sneak/netwatch:feature/mobile-detection-message sneak/netwatch:feat/responsive-mobile-redesign sneak/netwatch:feature/mobile-detection
sneak/netwatch:v1.0.0-rc2 sneak/netwatch:v1.0.0-rc1
1 Commits
v1.0.0-rc2 .. b80c8fd214
Author SHA1 Message Date
sneak b80c8fd214 Frontend unit tests cover durations, colours, statistics and health (closes #21)
check / check (push) Successful in 4m19s
Details 
New table-driven tests in test/unit/main.test.js: humanDuration, the
figure and sparkline colours either side of each latency boundary, a
target's min, max, average and median over empty, all-unreachable and
mixed histories, and the four health states either side of their
thresholds. src/main.js exports the four names they need.

package.json gains a test script, which script/frontend-test runs with
the dot reporter and, if a test fails, again with the spec reporter
before failing. NODE_OPTIONS picks the reporter, since yarn appends its
arguments after the test files.

Model: opus-5-5
 2026-10-03 23:59:16 +00:00
100 changed files with 2934 additions and 7297 deletions
Expand all files Collapse all files
.dockerignore
+7 -82
View File
@@ -1,84 +1,9 @@
# .dockerignore does NOT use .gitignore semantics. Docker matches with
# moby/patternmatcher: filepath.Match plus `**`, so `*` does not cross
# `/` and an unprefixed pattern is anchored at the context root. Every
# depth-independent pattern therefore needs `**/`, or `config/.env` and
# `certs/server.key` still ship while this file reads as solved. Only
# genuinely root-anchored entries go unprefixed. Never transplant these
# into .gitignore, where `**/` is wrong.
#
# Matching is case-sensitive, so secrets use character ranges rather
# than an ALL-CAPS twin, which would still miss `Server.Key`.
#
# Extend with this repo's own host-built artifacts, written anchored:
# `/myapp`, never `**/myapp`, which also matches `cmd/myapp/` and
# deletes the package directory from the context.
# .git is sent without its config. Without a VERSION build argument the
# stage that compiles runs `git describe --tags --always` on .git, which
# does not need .git/config; that file can hold a credential, such as a
# password in a remote URL or the token the CI checkout step stores there.
# Each submodule keeps a config with the same exposure in its git directory
# under .git/modules/, nested again for a submodule's own submodules, or in
# its own .git directory when it keeps one.
# KNOWN GAP: a submodule whose name has a `config` segment (`config`,
# `deploy/config`, `config/lib`) loses its whole git directory, because
# `**/.git/modules/**/config` also matches that segment's directory
# under .git/modules/. Go's version stamping then fails the build;
# nothing leaks. Name such a submodule without that segment:
# `git submodule add --name`.
**/.git/config
**/.git/modules/**/config
# Agent scratch: one full checkout of the repo per in-flight agent.
# Anchored because it occurs once where agents run at the repo root.
# KNOWN GAP: a repo running agents in subdirectories still ships
# `services/api/.claude/` and must add its own anchored entry.
node_modules
dist
tmp
.DS_Store
*.log
.claude
# Environment files. `*.env` covers bare `.env` and the `prod.env`
# convention. Re-include a committed template with a negation if the
# build needs one: `!docs/example.env`.
**/*.[eE][nN][vV]
**/.[eE][nN][vV].*
**/.[eE][nN][vV][rR][cC]
# Private keys and the bundles carrying them. Public certificates
# (*.crt, *.cer) are deliberately absent: they are legitimate inputs.
**/*.[pP][eE][mM]
**/*.[kK][eE][yY]
**/*.[pP]12
**/*.[pP][fF][xX]
**/[iI][dD]_[rR][sS][aA]
**/[iI][dD]_[dD][sS][aA]
**/[iI][dD]_[eE][cC][dD][sS][aA]
**/[iI][dD]_[eE][cC][dD][sS][aA]_[sS][kK]
**/[iI][dD]_[eE][dD]25519
**/[iI][dD]_[eE][dD]25519_[sS][kK]
# Dependencies: restored inside the image, never copied in.
**/node_modules
# OS metadata.
**/.DS_Store
**/Thumbs.db
# Editor state: never a build input, and it churns COPY.
**/*.swp
**/*.swo
**/*~
**/*.bak
**/.idea
**/.vscode
**/*.sublime-*
# This repository's own entries, after the shared content above: the
# frontend build, the viewport test's output, the binary `make build`
# writes and the reports `make run` stores, and Go test binaries,
# coverage output and log files at the root.
/dist
/tmp
/netwatch-server
/data
/*.test
/*.out
/*.log
# .git is sent so the build can stamp the version, without its config.
.git/config
.editorconfig
-6
View File
@@ -10,9 +10,3 @@ insert_final_newline = true
[Makefile]
indent_style = tab
[*.go]
indent_style = tab
# This repository's own sections, such as one for another language it
# uses, go below this comment, and a re-vendor keeps them.
.gitea/workflows/check.yml
+4 -12
View File
@@ -1,20 +1,12 @@
name: check
on: [push]
# Free the shared runner: a new push cancels only the same branch's older run.
concurrency:
group: ${{ github.workflow }}-${{ github.ref }}
cancel-in-progress: true
jobs:
check:
runs-on: ubuntu-latest
# Free the shared runner from a hung build.
timeout-minutes: 20
steps:
# actions/checkout v4.2.2, 2026-02-22
- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
# script/cibuild needs no token, so none is left in .git/config.
with:
persist-credentials: false
# All history and tags, so git describe finds the version tag.
fetch-depth: 0
- run: script/cibuild
# script/cibuild bootstraps, runs every check and builds the
# image. script/bootstrap links what it installs into
# ~/.local/bin, so that has to be on PATH for the rest.
- run: PATH="$HOME/.local/bin:$PATH" script/cibuild
.gitignore
+5 -43
View File
@@ -11,56 +11,18 @@ Thumbs.db
.vscode/
*.sublime-*
# Agent scratch (worktrees of this repo, created and destroyed by
# in-flight tooling). Unanchored: .gitignore patterns already match at
# every depth, so no prefix is wanted here. This is not a .dockerignore
# entry and must not be given a `**/` prefix on the way into one.
.claude/
# Node
node_modules/
# Secrets. Unanchored like every entry above, so each matches at every
# depth. Matching is case-sensitive on Linux, so names use character
# ranges rather than a lowercase form that misses `Server.Key`.
# Environment files. `*.env` covers bare `.env` and the `prod.env`
# convention. Only the templates `example.env` and `sample.env` are
# re-included below. A repository that commits any other template adds
# its own negation at the end of this file, for example `!.env.example`.
*.[eE][nN][vV]
.[eE][nN][vV].*
.[eE][nN][vV][rR][cC]
!example.env
!sample.env
# Private keys and the bundles carrying them.
*.[pP][eE][mM]
*.[kK][eE][yY]
*.[pP]12
*.[pP][fF][xX]
[iI][dD]_[rR][sS][aA]
[iI][dD]_[dD][sS][aA]
[iI][dD]_[eE][cC][dD][sS][aA]
[iI][dD]_[eE][cC][dD][sS][aA]_[sS][kK]
[iI][dD]_[eE][dD]25519
[iI][dD]_[eE][dD]25519_[sS][kK]
# This repository's own entries, such as its build outputs, go below
# this comment, and a re-vendor keeps them. Anchor a binary built at the
# root: `/myapp`, never `myapp`, which also ignores `cmd/myapp/`.
# Environment / secrets
.env
.env.*
*.pem
*.key
# Build output
dist/
tmp/
/netwatch-server
# The reports make run stores, in netwatch-server's default DATA_DIR
/data/
# Go test binaries and coverage output
*.test
*.out
# Logs
*.log
.prettierignore
+4
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@@ -1,2 +1,6 @@
backend/
dist/
node_modules/
tmp/
yarn.lock
.claude/
Dockerfile
+83 -139
View File
@@ -1,154 +1,98 @@
# The one image netwatch ships: nginx serves the built frontend and
# passes /api/, /.well-known/healthcheck and /metrics to netwatch-server,
# the Go backend, which runs in the same container on loopback only.
# passes /api/ and /.well-known/healthcheck to netwatch-server, the Go
# backend, which runs in the same container on loopback only.
# bin/entrypoint.sh starts and watches both.
#
# The lint and test phases are the gates: `make lint` (script/lint)
# builds the lint stage alone and `make test` (script/test) the test
# stage alone, and the two build stages, frontend-build and builder,
# depend on both, so the image cannot be built unless they pass. Each
# phase covers the frontend as well, through a copy from a node stage.
# Inside them each tool is invoked directly, never through make or
# script/, whose lint and test are themselves docker builds.
#
# In every stage ARG CACHEBUST comes right after the steps that install
# system packages and download Go's modules, or right after FROM in a
# stage with neither, and every step that lints, tests or compiles
# comes after it, as does yarn install in the node stages. script/
# passes a new value on every build, which reruns every RUN step after
# it. Docker keeps the layers above it until the base image, their own
# lines or go.mod and go.sum change. The steps that compile mount Go's
# build cache, and golangci-lint run also mounts golangci-lint's; both
# survive from build to build.
# Frontend lint stage: eslint with the rules in eslint.config.js. The
# lint phase below runs it.
# node:22-alpine as of 2026-02-22
FROM node@sha256:e4bf2a82ad0a4037d28035ae71529873c069b13eb0455466ae0bc13363826e34 AS frontend-lint
ARG CACHEBUST
WORKDIR /app
COPY package.json yarn.lock ./
RUN yarn install --frozen-lockfile
COPY . .
RUN yarn eslint .
# Lint stage — fast feedback on formatting and lint issues. The
# golangci/golangci-lint image ships Go, gofmt, make and the linter, so
# nothing is installed here. The root make lint builds this stage alone.
# golangci/golangci-lint:v2.12.2 (2026-08-10)
FROM golangci/golangci-lint@sha256:5cceeef04e53efe1470638d4b4b4f5ceefd574955ab3941b2d9a68a8c9ad5240 AS lint
# Lint phase: golangci-lint over the Go packages with .golangci.yml,
# and eslint through the copy from frontend-lint at the end. The
# golangci/golangci-lint image ships Go and the linter.
# golangci/golangci-lint:v2.14.0, 2026-09-24
FROM golangci/golangci-lint@sha256:ad862ba6b3798cbe0fd9fd7408d498fd74fbd2623a92406b2fd3898faf0bf98f AS lint
WORKDIR /src
COPY go.mod go.sum ./
COPY backend/go.mod backend/go.sum ./
RUN go mod download
ARG CACHEBUST
COPY . .
RUN --mount=type=cache,target=/root/.cache/go-build \
--mount=type=cache,target=/root/.cache/golangci-lint \
golangci-lint run --config .golangci.yml ./...
# Nothing is wanted from frontend-lint; the copy is what makes this
# phase run it.
COPY --from=frontend-lint /app/yarn.lock /dev/null
COPY backend/ .
RUN make fmt-check
RUN make lint
# Frontend test stage: the unit tests in test/unit/. The test phase
# below runs it, and the frontend-build stage starts from it. The tests
# print a dot each; if any fails, they run again with every test listed,
# and the step fails even if that run passes. NODE_OPTIONS chooses the
# reporter because yarn adds its arguments after the test files, where
# node would take a reporter option for one more file.
# node:22-alpine as of 2026-02-22
FROM node@sha256:e4bf2a82ad0a4037d28035ae71529873c069b13eb0455466ae0bc13363826e34 AS frontend-test
ARG CACHEBUST
WORKDIR /app
COPY package.json yarn.lock ./
RUN yarn install --frozen-lockfile
COPY . .
RUN NODE_OPTIONS=--test-reporter=dot timeout 90 yarn --silent run test || \
{ echo "--- Rerunning with every test listed for details ---"; \
NODE_OPTIONS=--test-reporter=spec timeout 90 yarn --silent run test; \
exit 1; }
# Test phase: the backend's tests with the race detector and coverage,
# and the frontend's through the copy from the frontend-test stage at
# the end. -race needs cgo and so a C compiler, which the Debian Go image
# ships and the alpine one does not. -timeout 90s is a backstop above
# the 60-second cap on the suite. The rerun with -v only shows details:
# the step fails however it ends, because the first run already failed.
# -count=1 because the mounted cache also holds test results, which go
# test would otherwise replay.
# golang:1.25.7-trixie, 2026-10-07
FROM golang@sha256:2b174ffcf56c7ad0c47d30d2630693265639ddf2a5141149c2da34db921791b4 AS test
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
ARG CACHEBUST
COPY . .
RUN --mount=type=cache,target=/root/.cache/go-build \
go test -count=1 -timeout 90s -race -cover ./... || \
{ echo "--- Rerunning with -v for details ---"; \
go test -count=1 -timeout 90s -race -v ./...; exit 1; }
# Nothing is wanted from the frontend-test stage; the copy is what makes
# this phase run its tests.
COPY --from=frontend-test /app/yarn.lock /dev/null
# Frontend build stage: the production build into dist/, which the
# runtime stage serves, on the yarn packages and source of the
# frontend-test stage. Nothing is wanted from the two phases; the copies
# are what make BuildKit build them first, so this stage cannot run
# unless lint and test passed.
FROM frontend-test AS frontend-build
COPY --from=lint /src/go.sum /dev/null
COPY --from=test /src/go.sum /dev/null
# vite.config.js reads the commit for the page's footer with git. git is
# installed again on every image build, although it comes above
# ARG CACHEBUST, because this stage starts from frontend-test, whose
# steps run again on every build.
RUN apk add --no-cache git
ARG CACHEBUST
RUN yarn build
# Backend build stage. Nothing is wanted from the two phases; the copies
# are what make BuildKit build them first, so nothing after them can
# run unless lint and test passed.
# Backend build stage
# golang:1.25-alpine (2026-02-27)
FROM golang@sha256:f6751d823c26342f9506c03797d2527668d095b0a15f1862cddb4d927a7a4ced AS builder
RUN apk add --no-cache git
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
ARG CACHEBUST
COPY --from=lint /src/go.sum /dev/null
COPY --from=test /src/go.sum /dev/null
# A tar-stream context keeps the sender's file owners, which git refuses.
RUN git config --system --add safe.directory /src
COPY . .
FROM golang:1.25-alpine@sha256:f6751d823c26342f9506c03797d2527668d095b0a15f1862cddb4d927a7a4ced AS builder
# The same go build as in script/build, which builds the binary on the
# host.
# gcc and musl-dev are for make test: its race detector needs cgo, which
# Go turns on by itself once a C compiler is present. make build still
# sets CGO_ENABLED=0, so the binary stays static.
RUN apk add --no-cache gcc git make musl-dev
WORKDIR /src
# Force BuildKit to run the lint stage before proceeding. BuildKit runs
# stages in parallel by default; without this no-op copy a lint failure
# would not gate compilation.
COPY --from=lint /src/go.sum /dev/null
COPY backend/go.mod backend/go.sum ./
RUN go mod download
COPY backend/ .
RUN make test
# make build is a shim around backend/script/build, the one definition
# of the build command:
# CGO_ENABLED=0 go build -trimpath -ldflags "-s -w -X main.Version=..."
# That script reads VERSION from the environment, so it is handed over
# there rather than as a make variable.
#
# The version is the VERSION build argument when one is given, otherwise
# `git describe --tags --always` on the .git in the build context: the
# tag on a tagged commit, tag-N-gHASH on a commit after one, the short
# commit when no tag is reachable. With .git present, a version that is
# still empty, dev or unknown fails the build: git is missing or could
# not read the checkout.
# `git describe --tags --always` of the repo's .git: the tag on a tagged
# commit, tag-N-gHASH on a commit after one, the short commit when no
# tag is reachable. A version that still comes out empty, dev or unknown
# fails the build. .git goes to /git, not /src/.git, where go build would
# find it and record VCS details of a work tree holding only backend/.
COPY .git /git
ARG VERSION
RUN --mount=type=cache,target=/root/.cache/go-build \
version="${VERSION:-$(git describe --tags --always)}"; \
if [ -e .git ]; then \
case "$version" in ""|dev|unknown) \
echo "version is '$version' although .git is present" >&2; \
exit 1 ;; \
esac; \
fi; \
CGO_ENABLED=0 go build -trimpath \
-ldflags "-s -w -X main.Version=$version" \
-o netwatch-server ./cmd/netwatch-server/
RUN version="${VERSION:-$(git --git-dir=/git describe --tags --always)}"; \
case "$version" in ""|dev|unknown) \
echo "version is '$version' although .git is present" >&2; \
exit 1 ;; \
esac; \
VERSION="$version" make build
# Runtime stage, and the last one: a plain `docker build .` builds it
# and the stages it copies from, the two phases included.
# Frontend lint stage — eslint over the JavaScript, as the lint stage
# above lints the Go. The root make lint builds this stage alone too.
# node:22-alpine as of 2026-02-22
FROM node@sha256:e4bf2a82ad0a4037d28035ae71529873c069b13eb0455466ae0bc13363826e34 AS frontend-lint
WORKDIR /app
COPY package.json yarn.lock ./
RUN yarn install --frozen-lockfile
COPY . .
RUN script/frontend-lint
# Frontend stage
# node:22-alpine as of 2026-02-22
FROM node@sha256:e4bf2a82ad0a4037d28035ae71529873c069b13eb0455466ae0bc13363826e34 AS frontend
WORKDIR /app
# Force BuildKit to run the frontend-lint stage before proceeding, as
# the builder stage does with the lint stage: without this no-op copy an
# eslint failure would not gate the image.
COPY --from=frontend-lint /app/yarn.lock /dev/null
COPY package.json yarn.lock ./
RUN yarn install --frozen-lockfile
RUN apk add --no-cache git make
COPY . .
# make frontend-check runs the frontend tests and format check; its test
# step runs the unit tests, then the production yarn build, so this both
# produces dist/ and gates the image on test and formatting regressions.
# This node stage has neither Go nor Docker; the frontend-lint, lint and
# builder stages above gate the rest.
RUN make frontend-check
# Runtime stage
# nginx:stable-alpine as of 2026-02-22
FROM nginx@sha256:15e96e59aa3b0aada3a121296e3bce117721f42d88f5f64217ef4b18f458c6ab
ARG CACHEBUST
# netwatch-server runs as this user, which owns the report directory.
# nginx keeps the image's own arrangement: its main process runs as
@@ -159,9 +103,9 @@ RUN addgroup -g 1000 -S netwatch && \
# At start-up the nginx image renders every template here into
# conf.d; bin/entrypoint.sh says how.
RUN rm /etc/nginx/conf.d/default.conf
COPY configs/nginx.conf /etc/nginx/templates/netwatch.conf.template
COPY configs/security-headers.conf /etc/nginx/security-headers.conf
COPY --from=frontend-build /app/dist /usr/share/nginx/html
COPY nginx.conf /etc/nginx/templates/netwatch.conf.template
COPY security-headers.conf /etc/nginx/security-headers.conf
COPY --from=frontend /app/dist /usr/share/nginx/html
COPY --from=builder /src/netwatch-server /usr/local/bin/netwatch-server
COPY bin/entrypoint.sh /usr/local/bin/entrypoint.sh
Makefile
+10 -23
View File
@@ -1,10 +1,10 @@
.PHONY: bootstrap setup dev build run clean test lint fmt fmt-check check \
add-dependency tidy frontend-viewport-test docker hooks
.PHONY: bootstrap setup dev test lint fmt fmt-check check frontend-check \
frontend-viewport-test docker hooks
# Standard targets are thin shims; the implementations live in script/
# per the scripts-to-rule-them-all pattern (see the Entrypoints section
# of README.md). test, lint, fmt, fmt-check and check cover the whole
# repo: the frontend in web/ and the Go backend in cmd/ and internal/.
# repo: the frontend here and the Go backend in backend/.
bootstrap:
@script/bootstrap
@@ -13,18 +13,7 @@ setup:
@script/setup
dev:
@script/dev
# The frontend into dist/ and the netwatch-server binary.
build:
@script/build
# Builds, then runs netwatch-server on port 8080.
run:
@script/run
clean:
@script/clean
yarn dev
test:
@script/test
@@ -41,16 +30,14 @@ fmt-check:
check:
@script/check
# make add-dependency PACKAGE=<name>@<version>. PACKAGE reaches the
# script through the environment, so the shell never reads it as code.
add-dependency:
@script/add-dependency "$$PACKAGE"
tidy:
@script/tidy
# The frontend tests and format check, for Dockerfile's frontend stage,
# which has neither Go nor Docker. Use check everywhere else.
frontend-check:
@script/frontend-check
# Responsive-layout verification in a containerised browser. Kept out of
# check: it takes minutes.
# check: it needs Docker and takes minutes, where make test has to stay
# under 20 seconds.
frontend-viewport-test:
@script/frontend-viewport-test
README.md
+117 -443
View File
@@ -1,35 +1,30 @@
NetWatch is an MIT-licensed JavaScript single-page application by
[@sneak](https://sneak.berlin) that provides real-time network latency
monitoring to common internet hosts, displayed with color-coded figures and
sparkline graphs, served from a static bucket or from its Docker image, where a
small Go backend stores the measurements the page reports.
sparkline graphs, served from a static bucket or Docker container.
## Getting Started
```bash
# Install the dependencies and the git pre-commit hook
make setup
# Install dependencies
yarn install
# Run the page on the Vite dev server
make dev
# Development server
yarn dev
# Build netwatch-server and run it on port 8080
make run
# Production build
yarn build
# Run the tests, both linters and the format check
make check
# Preview production build
yarn preview
# Build the page into dist/ and netwatch-server into the repo root
make build
# Build the image and run it
make docker
# Docker
docker build -t netwatch .
docker run -p 8080:8080 netwatch
```
`make check` and `make docker` need Docker. `make dev` passes `/api` to
`http://127.0.0.1:8080`, where `make run` starts `netwatch-server` with its
defaults, so the reports the page posts are stored in `data/reports`.
`yarn dev` proxies `/api` to `http://127.0.0.1:8080`, so a locally running
`netwatch-server` (see `backend/`) receives the reports the page posts.
## Entrypoints
@@ -37,119 +32,75 @@ This repository adheres to the
[Scripts to Rule Them All](https://github.com/github/scripts-to-rule-them-all)
standard: normalized scripts in `script/` are the entrypoints for the
development workflow, and the Makefile targets are thin shims that call them.
The scripts cover both the frontend and the Go backend, so `make check` fails if
either one is broken. We provide:
The Go backend in `backend/` has its own `script/` directory and shim Makefile
(see [backend/README.md](backend/README.md)). The root scripts cover both
halves, so the root `make check` fails if either one is broken. We provide:
- `script/bootstrap` — install all dependencies (the pinned node via nvm unless
the `node` on `PATH` has the pinned major version and is new enough for the
frontend's dependencies, yarn `YARN_VERSION` via corepack, or npm where there
is no corepack, unless the `yarn` on `PATH` is exactly that version,
`yarn install --frozen-lockfile`, Go `GO_VERSION` unless the `go` on `PATH` is
exactly that version, and the Go modules), linking what it installs itself
into `~/.local/bin`, which has to be on `PATH`. It installs no Go linter and
not Docker: `make test` and `make lint` run in Docker
one new enough for the frontend's dependencies is installed, yarn via
corepack, `yarn install --frozen-lockfile`, the pinned Go unless one at least
as new as `backend/go.mod` asks for is installed, the Go modules, and gcc with
the C library headers unless gcc is installed, for the race detector in
`make test`), linking what it installs itself into `~/.local/bin`, which has
to be on `PATH`. It installs no Go linter and not Docker: `make lint` runs
both linters in Docker
- `script/setup` — make a fresh clone ready for development: bootstrap plus the
git pre-commit hook
- `script/dev` — run the Vite dev server, which proxies `/api` to a locally
running `netwatch-server`
- `script/build` — build the frontend for production into `dist/`, then the
static `netwatch-server` binary into the repo root with its version stamped
in: `VERSION` from the environment, or when that is unset or empty,
`git describe --tags --always --dirty` inside a git checkout, as
`script/docker` does, then `dev`
- `script/run` — build with `script/build`, then run `netwatch-server` with its
defaults (see [Settings](#settings))
- `script/clean` — remove what `script/build` writes
- `script/projectname` — print the project name (used for the Docker image tag)
- `script/yarn` — run yarn with the given arguments under the node
`script/bootstrap` would use: with `~/.local/bin` first on `PATH`, the first
`node` on that `PATH` when it has the pinned major version and is new enough
for the frontend's dependencies, and otherwise the pinned node in nvm. Every
script that runs yarn on the host runs it through this one, except
`script/bootstrap`, which picks its own node and yarn
- `script/test` — build the `test` phase of `Dockerfile`, writing no image: the
frontend's unit tests in its `frontend-test` stage, and the backend's Go tests
with the race detector and coverage. The frontend's production build is left
to the image build, in the `frontend-build` stage
- `script/lint` — build the `lint` phase of `Dockerfile`, writing no image:
eslint in its `frontend-lint` stage, and golangci-lint over the Go packages
- `script/fmt` — format all files (writes): prettier over the JavaScript, CSS,
HTML and Markdown, then gofmt over `cmd/` and `internal/`. It runs on the
host, as `script/fmt-check` does, with `~/.local/bin` put on `PATH`
- `script/test` — run `script/frontend-test`, then `backend/script/test`, the
backend's Go tests with the race detector and coverage
- `script/lint` — run eslint, then golangci-lint, both in Docker, by building
the `frontend-lint` and `lint` stages of `Dockerfile` without the cache
- `script/fmt` — format all files (writes): prettier, then gofmt over `backend/`
- `script/fmt-check` — check formatting (read-only): prettier, then gofmt
- `script/check` — run test, lint, and fmt-check
- `script/add-dependency` — add a frontend package, or move one to another
version: `make add-dependency PACKAGE=<name>@<version>` runs `yarn add --dev`,
which changes `package.json` and `yarn.lock` together, then
`yarn install --frozen-lockfile`
- `script/tidy` — run `go mod tidy`: to add a Go module, import it and run
`make tidy`; to move one to another version, edit its `require` line in
`go.mod`, then run `make tidy`
- `script/frontend-test` — run the unit tests in `test/unit/` on the host with
Node's built-in test runner, through the `test` script in `package.json`, and
if any fails, run them again listing every test, and fail; then the production
build. Each test run has a 90-second timeout. `make test` runs the same tests
in Docker, without the production build
- `script/frontend-fmt` — format the JavaScript, CSS, HTML and Markdown with
prettier (writes)
- `script/frontend-test` — run the unit tests in `test/unit/` with Node's
built-in test runner, through the `test` script in `package.json`, and if any
fails, run them again listing every test, and fail; then the production build.
Each run has a 30-second timeout
- `script/frontend-lint` — run eslint with the rules in `eslint.config.js`; it
runs inside the `frontend-lint` stage of `Dockerfile`, which `make lint`
builds
- `script/frontend-fmt` — format everything prettier understands (writes)
- `script/frontend-fmt-check` — check prettier formatting (read-only)
- `script/frontend-check` — run `script/frontend-test` and
`script/frontend-fmt-check`, for the frontend stage of `Dockerfile`, which has
neither Go nor Docker
- `script/frontend-viewport-test` — responsive-layout verification of the built
frontend in a containerised headless Chrome (see
[test/viewport/README.md](test/viewport/README.md)). Before the browser
starts, it checks that the page, and a path that falls back to it, are served
with `Cache-Control: no-cache` and `Content-Security-Policy`. Not part of
`script/check`: it takes minutes.
- `script/docker` — build the image from `Dockerfile`, tagged `netwatch` via
`script/projectname`
[test/viewport/README.md](test/viewport/README.md)). Not part of
`script/check`: it needs Docker and takes minutes.
- `script/docker` — build the image from `Dockerfile` without the build cache,
tagged `netwatch` via `script/projectname`
- `script/cibuild` — CI entrypoint: runs `script/bootstrap` and `script/check`,
then builds the image as `script/docker` does
then builds the image as `script/docker` does, without the build cache
- `script/precommit` — run by the git pre-commit hook; runs `script/check`
- `script/install-precommit` — install the git pre-commit hook
`script/test`, `script/lint`, `script/docker` and `script/cibuild` each pass a
new `CACHEBUST` value, so every step in `Dockerfile` that lints, tests or
compiles runs again even when nothing has changed. Docker keeps the system
packages and the Go modules from earlier builds until the base image, the step
that installs them, or `go.mod` and `go.sum` change. The `frontend-build` stage
is the exception: it installs git again on every image build, because it starts
from the `frontend-test` stage, whose steps run again on every build. Go's build
cache and golangci-lint's are kept as well, and each reuses a result only when
everything it was made from is unchanged. Both `go test` runs carry `-count=1`,
so no test result is reused. The yarn packages are installed again on every
build.
## Responsive layout
The narrow-viewport layout lives in the `max-width: 768px` media block in
`web/src/styles.css`. It is verified automatically by
`make frontend-viewport-test`, which drives a digest-pinned headless Chrome
against the built `dist/` and asserts on computed layout at widths derived from
that CSS — on every breakpoint it declares and one pixel either side of it, plus
a 320px floor, a desktop baseline and two landscape sizes. See
[test/viewport/README.md](test/viewport/README.md) for what it covers and what
it genuinely cannot.
`src/styles.css`. It is verified automatically by `make frontend-viewport-test`,
which drives a digest-pinned headless Chrome against the built `dist/` and
asserts on computed layout at widths derived from that CSS — one pixel either
side of every breakpoint it declares, plus a 320px floor, a desktop baseline and
two landscape sizes. See [test/viewport/README.md](test/viewport/README.md) for
what it covers and what it genuinely cannot.
## Rationale
When debugging network issues, it's useful to have a persistent at-a-glance view
of latency and reachability to multiple well-known internet endpoints. NetWatch
provides this as a single page that does all its measuring in the browser, so it
can be served from anywhere static files are served. The backend in its Docker
image only stores the measurements the page reports; without it, the page works
the same and nothing is stored.
provides this as a zero-dependency SPA that can be deployed anywhere static
files are served, with no backend required.
## Design
The page's source is in `web/`, the Go backend's in `cmd/` and `internal/`, and
nginx's configuration in `configs/`.
The application is a single-page app built with Vite and Tailwind CSS v4. All
code lives in `src/main.js` with a class-based architecture:
The page is built with Vite and Tailwind CSS v4. Its code is all in
`web/src/main.js`, with a class-based architecture:
- **`CONFIG`**: Configuration object (update interval, timeouts, axis ticks,
etc.). The interval menu sets `updateInterval`, the one value the page writes
into `CONFIG`; the timeouts, the time the history spans and the x-axis ticks
are computed from it
- **`CONFIG`**: Frozen configuration object (update interval, timeouts, axis
ticks, etc.)
- **`HostState`**: Per-host state management — history buffer, latency tracking,
status transitions
- **`AppState`**: Top-level state container — WAN hosts, local hosts, pause
@@ -160,10 +111,10 @@ The page is built with Vite and Tailwind CSS v4. Its code is all in
`updateSummary()` / `updateHealthBox()` handle incremental updates
- **`tick()`**: Main loop — measures all hosts in parallel, pushing each host's
sample and redrawing its row as soon as its check ends, then redraws every
row, the summary and the health box once the last check ends. The first round,
after loading or an interval change, is discarded. The rows are sorted when
the last check ends in round 2, the first one kept, and in rounds 11, 21, 31
and so on. When paused, pushes blank markers (no probes, no false outage)
row, the summary and the health box once the last check ends. The rows are
sorted then too, after the first round that is not discarded and every tenth
round after that. When paused, pushes blank markers (no probes, no false
outage)
- **`Reporter`**: Posts collected samples to the backend
### Reporting
@@ -173,235 +124,16 @@ same-origin path `/api/v1/reports`: a random per-browser `clientId` kept in
`localStorage`, `geo` sent as null, and each host's unreported, non-paused
samples (timestamp, latency, error). A per-host high-water mark makes every
report a delta, so only new samples are sent; the mark advances only on a
delivered report, and while paused nothing is sent. Changing the interval clears
each host's history on the page; the samples in it not yet reported still go in
the next report. Delivery failure is quiet — one debug-log line per outage,
never blocking probing. The report-building step is a pure function of host
state.
A sample in the history that no report has delivered is sent only as long as the
history holds it, so after a refused or failed report the next report carries
the samples the history still has. Samples an interval change cleared from the
history are kept apart, the last 100 per host, until they are delivered. The
history keeps each host's last 100 rounds: 100 seconds at the 1-second interval,
200 seconds at 2 seconds, 5 minutes at the default of 3 seconds and 100 minutes
at 60 seconds. At 1 second, one refused or failed report loses the oldest 20
seconds of each host's samples, as the next delivered report comes 2 minutes
after the last. At 2 seconds and longer one loses nothing; samples are lost from
the third refused report in a row at 2 seconds, from the fifth at 3 seconds, and
later still at the longer intervals.
No report is sent while the page is paused, but each paused round still adds an
entry to the history, so each report due during a pause counts as a refused one.
A pause longer than the history spans loses the samples in the history recorded
between the last delivered report and the pause: up to a minute's worth for each
host if the report before the pause was delivered.
### Backend
`netwatch-server` is a small Go HTTP server that stores the reports the page
posts. It keeps them in memory and writes them to `DATA_DIR` as zstd-compressed
files of JSON lines: every minute, whenever 10 MiB are waiting, and when it
stops. Its routes:
- `POST /api/v1/reports` — takes a report, without credentials; each client
address may send a limited number a minute, and the report files are capped in
size, the oldest deleted first
- `GET /.well-known/healthcheck` — answers 200 with `"status":"ok"`, the
server's version and its uptime; while reports cannot be stored, as the last
write of a report file failed, it answers 503 with `"status":"error"` and the
same fields (see [Report storage](#report-storage))
- `GET /metrics` — Prometheus metrics behind basic auth, only when
`METRICS_USERNAME` and `METRICS_PASSWORD` are set; each client address may
make a limited number of requests to it a minute
It is an `fx`-wired Go application: `cmd/netwatch-server/` starts it, and its
packages are in `internal/`:
- **`cli`**: Runs `netwatch-server` from its command line: the `check-cidr` and
`prepare-data-dir` subcommands, which `bin/entrypoint.sh` runs before it
starts the server, and, given no arguments, the server, with the `fx` wiring.
It refuses any other arguments with a usage message and exit code 2.
- **`config`**: Loads configuration from environment variables and config files
via Viper.
- **`handlers`**: HTTP request handlers for the API (health check, report
ingestion).
- **`reportbuf`**: The in-memory buffer of reports and the files it writes them
to.
- **`server`**: Chi-based HTTP server with middleware wiring and route
registration.
- **`healthcheck`**, **`middleware`**, **`logger`**, **`globals`**: Supporting
infrastructure.
In the image, the `test` phase of `Dockerfile` tests it, the `builder` stage
builds it, and `bin/entrypoint.sh` runs it as user `netwatch` on
`127.0.0.1:8081`, behind nginx (see [Deployment](#deployment)). Outside the
image, `make run` builds it and runs it on port 8080.
#### Settings
| Variable | Default | Description |
| ---------------------- | -------------------- | -------------------------------------------------------------------------------------------------------- |
| `BIND_ADDRESS` | empty | IP address to listen on; empty listens on every interface |
| `PORT` | `8080` | HTTP listen port |
| `DATA_DIR` | `./data/reports` | Directory for compressed reports |
| `DATA_DIR_MAX_BYTES` | `1073741824` (1 GiB) | Most bytes of report files kept in `DATA_DIR`, oldest deleted first; see [Report limits](#report-limits) |
| `DEBUG` | empty | Debug logging; any non-empty value, `false` and `0` included, turns it on |
| `TRUSTED_PROXIES` | RFC 1918 ranges | Comma-separated CIDRs whose `X-Forwarded-For` / `X-Real-IP` headers are trusted for client IP resolution |
| `REPORTS_PER_MINUTE` | `60` | Reports each client address may send a minute; see [Report limits](#report-limits) |
| `CORS_ALLOWED_ORIGINS` | empty | Comma-separated origins whose pages may call the API; see [CORS](#cors) |
| `METRICS_USERNAME` | empty | Basic auth user name for `/metrics`; see [Metrics](#metrics) |
| `METRICS_PASSWORD` | empty | Basic auth password for `/metrics`; see [Metrics](#metrics) |
| `SENTRY_DSN` | empty | DSN of the Sentry project to send errors to; see [Sentry](#sentry) |
`TRUSTED_PROXIES` defaults to `10.0.0.0/8,172.16.0.0/12,192.168.0.0/16`. A list
replaces the default; set and empty, the server trusts no proxy. Loopback is not
in the default, so a reverse proxy on the same host has to be named, as in
`TRUSTED_PROXIES=127.0.0.1/32`. A request whose direct peer is outside this set
has its forwarded headers ignored, and the direct peer is logged and
rate-limited instead. From a direct peer inside the set, the client address is
the right-most `X-Forwarded-For` entry that is not in the set: each proxy
appends the address it took the request from, so the entries further left were
written by the client and are not used. An entry written as an address with a
port, such as `198.51.100.7:5000` or `[2001:db8::1]:443`, is read as that
address. If the search from the right finds only addresses in the set, or meets
an entry that is not an address at all, such as `unknown`, the direct peer is
used. `X-Real-IP` is read only when `X-Forwarded-For` is missing or empty. The
container image does not use this default; see [Deployment](#deployment).
A variable set to a value the server cannot use, such as `PORT=abc` or a
`BIND_ADDRESS` that is not an IP address, stops it from starting, with an error
naming the variable. An empty variable counts as unset, except
`TRUSTED_PROXIES`. No value of `DEBUG` stops the start.
#### Report storage
Reports are written as `reports-<timestamp>-<number>.jsonl.zst` files in
`DATA_DIR`. The timestamp is in UTC to the millisecond, so the names sort by
time. The number starts at 1 when the server starts and goes up by one for each
file the server starts to write, so two files written in the same millisecond
still get different names. A failed write uses up its number and leaves a gap in
the numbers: its file, if it was created, is removed. The file stays, counted
toward `DATA_DIR_MAX_BYTES` from the next start, only if removing it fails too.
Files are created with `O_EXCL` to prevent overwrites.
The reports of a failed write stay in memory, and the next flush, within a
minute, tries again to write them. The server writes one file at a time, so a
file holds its reports in the order they arrived, those of a failed write
included. From the failed write until a write succeeds, `POST /api/v1/reports`
refuses every report with 500 and keeps nothing of it, and the health check
answers 503 with `"status":"error"`. The page sends the refused samples again in
its next report, as long as it still holds them: at the 1-second interval one
refused report already loses some of those in the history (see
[Reporting](#reporting)). Reports already answered 200 are lost only if the
server stops before a write succeeds; the final flush at stop tries them too,
and if it fails, the process exits non-zero.
#### Report limits
`POST /api/v1/reports` takes reports from anyone who can reach it, without
credentials, so it is bounded instead. Each refusal below answers with the same
`{"status":"error"}` body as any other error, except nginx's refusal of a body
over the limit in the image.
- **JSON only.** A report must be sent with `Content-Type: application/json`,
parameters such as `charset` allowed, as the page sends it; any other is
refused with 415, and nothing of it is stored. A page on another origin can
send a `text/plain` POST, or a form, without a CORS preflight; refusing them
keeps any site from making its visitors' browsers store reports (see
[CORS](#cors)).
- **Body limit.** A report body may be at most 1 MiB, the backend's limit for
any request. Run on its own, the backend answers 413 before the route to a
request that declares a longer body. Without a declared length, the route
answers 413 only when the report it reads runs past 1 MiB; nothing after the
end of the report is read, so a longer body whose report ends sooner is
stored, and one that stops being valid JSON sooner is answered 400. In the
image, nginx refuses a body over 1 MiB first, with or without a declared
length, as its `client_max_body_size`, which `configs/nginx.conf` does not
set, is 1 MiB by default. nginx answers 413 with its own HTML error page, and
the backend never sees the request.
- **Rate limit.** Each client address, resolved through `TRUSTED_PROXIES`, may
send `REPORTS_PER_MINUTE` reports a minute; past that it gets 429 with
`Retry-After: 60`. The minute slides: reports from the minute before still
count, fading out over the current one, so an address is sure never to be
refused only while it sends at most half of `REPORTS_PER_MINUTE` in any 60
seconds. The page sends one report a minute from each open tab, so the default
of 60 refuses nothing from up to 30 tabs behind one address, such as a
household or an office sharing it, however their reports bunch up. Report
responses also carry `X-RateLimit-Limit`, `X-RateLimit-Remaining` and
`X-RateLimit-Reset` headers.
- **Size cap.** The report files in `DATA_DIR` may total at most
`DATA_DIR_MAX_BYTES`, counting the files already there at start. Reports
waiting in memory count at their uncompressed size until they are written,
those of a failed write included; the part of its file written is removed.
When a report would take the total past the cap, the oldest report files are
deleted to make room, and each deletion is logged with the file's name and
size; a file still being written is never deleted. A report is refused with
507, and nothing of it is stored, only when the reports waiting to be written
fill the cap on their own, and then no file is deleted. At start, report files
past the cap, as after lowering it, are deleted the same way. So the cap is
how much of the newest reports is kept: the default of 1 GiB is small enough
for any host; set it to the space you can give `DATA_DIR`.
At the defaults, one address may send 60 reports of up to 1 MiB a minute, and a
report made up to compress badly takes about as much room in the report files as
its request body, so in about 17 minutes one address can fill the 1 GiB cap with
its own reports, every report stored before them deleted to make room. Lowering
`REPORTS_PER_MINUTE` or raising `DATA_DIR_MAX_BYTES` makes that take longer.
#### CORS
The page calls the API from the origin it is served from, so by default the
server sends no CORS headers, and browsers let no other origin's pages call it.
To serve the page from elsewhere, list that origin in `CORS_ALLOWED_ORIGINS`
(for example `https://netwatch.example.com`); pages from a listed origin may
`GET` and `POST` with a `Content-Type` header. Each entry must be a plain
origin, `scheme://host` with an optional `:port`, as browsers send it: no path,
not even a trailing `/`, and no `*`. Any other entry stops the server from
starting, with an error naming `CORS_ALLOWED_ORIGINS`.
#### Metrics
With both `METRICS_USERNAME` and `METRICS_PASSWORD` set, the server serves
Prometheus metrics at `GET /metrics` to requests with those as their basic auth
credentials, and answers any other with 401. For each request that reaches the
health check or `POST /api/v1/reports`, those the rate limit refuses included,
the metrics record its duration and response size, labelled with its path,
method and status; they also count those requests in progress, and include Go's
runtime and process metrics. No other request is recorded: not those to
`/metrics` itself, and not those answered before they reach either route, such
as a CORS preflight, or a request refused with 404 for a path no route has or
405 for a method its route does not take. Run on its own, the backend also
answers 413 before the route to a request declaring a body length over the 1 MiB
limit, which is not recorded. A body over the limit sent without a declared
length reaches the route and is recorded with the status the route answers,
which is 413 only when the report it reads runs past the limit: nothing after
the end of the report is read. In the image neither reaches the backend: nginx
answers both with 413 itself (see [Report limits](#report-limits)), and nothing
of them is recorded. Clients can make up any number of paths and methods, and
each would add labels to the metrics for as long as the server runs.
`/metrics` is rate limited, so that its password cannot be guessed quickly: each
client address, resolved through `TRUSTED_PROXIES`, may make 60 requests to it a
minute, whatever their credentials. Past that it gets 429 with
`Retry-After: 60`, and its credentials are not checked. The minute slides as it
does for reports (see [Report limits](#report-limits)), so a scraper polling
every 2 seconds or less often is never refused. This allowance is apart from the
one for reports.
#### Sentry
With `SENTRY_DSN` set, each panic in a handler is reported to that Sentry
project under the release `netwatch-server-` followed by the server's version.
On shutdown the server waits up to 2 seconds for Sentry to finish sending.
delivered report, and while paused nothing is sent. Delivery failure is quiet —
one debug-log line per outage, retried at the next interval, never blocking
probing. The report-building step is a pure function of host state.
### Monitoring targets
- **26 WAN hosts**: datavi.be (pinned at start), Anthropic API, OpenAI API, AWS
Console, Google Cloud Console, Microsoft Azure, Cloudflare, Fastly CDN,
Akamai, Google, GitHub, B2, 8 S3 regional endpoints (Cape Town, London,
Bahrain, Tokyo, Singapore, Sydney, Oregon, São Paulo) and 6 Hetzner speed test
servers (Nuremberg, Falkenstein, Helsinki, Ashburn, Hillsboro, Singapore)
- **22 WAN hosts**: datavi.be, Anthropic API, OpenAI API, AWS Console, GCP
Console, Azure, Cloudflare, Fastly, Akamai, GitHub, B2, 7 S3 regional
endpoints (Cape Town, London, Bahrain, Tokyo, Sydney, Oregon, São Paulo), 4
GCS locational endpoints (Iowa, Belgium, Singapore, Sydney)
- **Local CPE**: Cable modem at 192.168.100.1 (always monitored)
- **Local Gateway**: Auto-detected on startup by probing common default gateway
addresses (192.168.1.1, 192.168.0.1, 192.168.8.1, 10.0.0.1); first responder
@@ -413,28 +145,15 @@ Local hosts are tracked separately from WAN stats.
### Latency measurement
GET requests to each target's URL as written, with `mode: 'no-cors'` and
`cache: 'no-store'`, timed with `performance.now()`. No query string is added:
the Hetzner speed-test servers close the connection without an answer when the
URL has one, and `no-store` keeps the browser's cache out of the measurement.
Each check times out after 80% of the refresh interval (24 seconds at 30
seconds) and is then recorded as a timeout, so a round's checks have all
finished before the next round is due. When no WAN host answers, a recovery
probe checks 4 WAN hosts, picked at random when it starts, every half second,
giving up the checks it started half a second before. As soon as one answers, a
new round starts at once, as it does after an interval change. A round started
early gives up the last round's checks if they are still waiting, and that round
records nothing more, so rounds never overlap. The browser chooses between IPv4
and IPv6 for each target, as for any request; the local targets are IPv4
addresses.
Each recorded check that fails writes one line to the browser console with
`console.error`, and the same line to the debug log: the target's name and URL,
the time, whether it timed out, answered over the time limit or hit a network
error (with the error the browser gives the page, such as
`TypeError: Failed to fetch`, which does not say why), and how long the request
took. A target that answers after failed checks writes one `console.info` line
with its latency and how many checks in a row had failed.
HEAD requests with `mode: 'no-cors'` and `cache: 'no-store'`, timed with
`performance.now()`. Each check times out after 80% of the refresh interval (24
seconds at 30 seconds) and is then recorded as a timeout, so a round's checks
have all finished before the next round is due. When no WAN host answers, a
recovery probe checks 4 random WAN hosts every half second, giving up the checks
it started half a second before. As soon as one answers, a new round starts at
once, as it does after an interval change. A round started early gives up the
last round's checks if they are still waiting, and that round records nothing
more, so rounds never overlap. IPv4 only.
### Color coding
@@ -459,65 +178,39 @@ dist/
## Features
- A round of checks every 3 seconds by default; the interval menu sets 1, 2, 3,
5, 10, 15, 30 or 60 seconds and clears the history
- Sparklines of each target's last 100 rounds: 300 seconds at 3 seconds
- The first round after loading or an interval change is discarded, as DNS and
TLS setup inflate its latencies
- Health indicator from the WAN hosts' latest results: OFFLINE (red) when more
than 10 fail and at most 4 answer, otherwise DEGRADED (orange) when more than
4 fail, otherwise SLOW (yellow) when more than 3 take over 1000ms, otherwise
HEALTHY (green)
- Summary stats across WAN hosts only: how many answered, the min, median,
average and max of their latest latencies, the min and max over the whole
history, and the number of rounds run (`Checks`)
- Fixed chart axes: Y-axis 0–1000ms, higher latencies drawn at the top; X-axis
the time the history spans
- Real-time monitoring with 2s update interval and 300s history sparklines
- Health indicator: green (HEALTHY) or red (DEGRADED) based on WAN reachability
- Summary stats: reachable count, min/max/avg latency across WAN hosts only
- Fixed chart axes: Y-axis 0–1000ms, X-axis 0–300s
- Color-coded latency figures and sparkline line segments
- WAN host rows sorted by latest latency, unreachable last; pinned rows stay on
top, in name order
- Play/pause: pause stops probes but history keeps scrolling (blank gaps, no
false outage)
- Debug log panel, behind a checkbox in the footer, with five levels (error,
warning, notice, info, debug) and the last 1000 lines
- Local and UTC clocks
- Clickable service URLs
- A footer link to the commit the page was built from
- Canvas-based sparkline rendering with devicePixelRatio scaling
- Zero runtime dependencies: all resources bundled into build artifacts
## Deployment
`make build` writes the page to `dist/`, which any static file host (S3, GCS,
Cloudflare Pages, Vercel, Netlify, GitHub Pages) can serve; with no backend
there, its reports fail quietly and nothing is stored. Or run the Docker image
behind a reverse proxy.
After running `yarn build`, deploy the contents of the `dist/` directory to any
static file host (S3, GCS, Cloudflare Pages, Vercel, Netlify, GitHub Pages) or
use the Docker image behind a reverse proxy.
The Docker image, built from `Dockerfile` by `make docker`, is the whole service
in one container: nginx serves the built frontend and passes `/api/`,
`/.well-known/healthcheck` and `/metrics` to the Go backend, `netwatch-server`.
`bin/entrypoint.sh` starts it listening only inside the container, on
`127.0.0.1:8081`, with `TRUSTED_PROXIES=127.0.0.1/32`, so it takes the client
address nginx passes on and no other. The image:
The Docker image, built from `Dockerfile`, is the whole service in one
container: nginx serves the built frontend and passes `/api/` and
`/.well-known/healthcheck` to the Go backend, `netwatch-server`, which listens
only inside the container, on `127.0.0.1:8081`. The image:
- Listens on port 8080 by default (override with `PORT` env var)
- Takes the client address from `X-Forwarded-For` only on requests from the
reverse proxies named in `TRUSTED_PROXIES`, by default from any address in
`10.0.0.0/8`, `172.16.0.0/12` or `192.168.0.0/16`. `bin/entrypoint.sh` checks
each entry with `netwatch-server check-cidr`, which parses it as the backend
parses its own `TRUSTED_PROXIES`
reverse proxies named in `TRUSTED_PROXIES`, and by default from none
- Sends access logs to stdout
- Sends the page with `Cache-Control: no-cache`, so a browser that keeps a copy
checks with the server that it is current before using it again; only the
files under `/assets/`, whose names change whenever their contents do, are
cached as immutable
- Caches static assets with immutable headers
- Sends the security headers `REPO_POLICIES.md` requires on every response, as
`configs/security-headers.conf` sets them, in place of the backend's own
`security-headers.conf` sets them, in place of the backend's own
- Stores reports in `DATA_DIR`, `/data/reports` by default, on the `/data`
volume. Before the backend starts, the image creates `DATA_DIR` and gives it
and `/data` to user `netwatch` (uid 1000), which the backend runs as, with
`netwatch-server prepare-data-dir`, which acts on nothing outside `/data`, so
a host directory bind-mounted at `/data` ends up owned by uid 1000
and `/data` to user `netwatch` (uid 1000), which the backend runs as, so a
host directory bind-mounted at `/data` ends up owned by uid 1000
- Writes buffered reports to disk on `docker stop`, and exits non-zero if nginx
or the backend exits on its own, so the platform restarts it
@@ -527,9 +220,9 @@ What the [upaas](https://git.eeqj.de/sneak/upaas) app for netwatch needs:
- **Port:** container port `8080`.
- **Volume:** container path `/data`; the reports are kept in `/data/reports`.
- **Environment variables:** none is required. An empty one counts as unset,
except `TRUSTED_PROXIES`, and one set to a value netwatch cannot use stops the
container at start, with the reason in its log.
- **Environment variables:** none is required. An empty one counts as unset, and
one set to a value netwatch cannot use stops the container at start, with the
reason in its log.
- `PORT`, default `8080`: the container port, from 1 to 65535. `8081` cannot
be used: the backend listens on it inside the container
- `REPORTS_PER_MINUTE`, default `60`: reports each client address may send a
@@ -538,45 +231,26 @@ What the [upaas](https://git.eeqj.de/sneak/upaas) app for netwatch needs:
report files may take; the oldest are deleted to stay under it
- `CORS_ALLOWED_ORIGINS`, default empty: other origins whose pages may call
the API
- `DEBUG`, default empty: debug logging; any non-empty value, `false` and
`0` included, turns it on
- `DEBUG`, default `false`: debug logging
- `DATA_DIR`, default `/data/reports`: the directory the reports are kept
in: `/data` or a path below it, with no `.` or `..` part and no extra `/`.
The container also stops if the path goes through a symbolic link that
leads out of `/data` or is written as a full path
- `TRUSTED_PROXIES`, default `10.0.0.0/8,172.16.0.0/12,192.168.0.0/16`: the
addresses the reverse proxy in front of the container connects from, as IP
addresses or CIDRs separated by commas. nginx takes the client address
from `X-Forwarded-For` only on a request from one of them, and the rate
limit counts that address. A list replaces the default. Set and empty,
`X-Forwarded-For` is ignored and every client behind the proxy shares the
proxy's one allowance of `REPORTS_PER_MINUTE`. Any client that connects
from one of these addresses can write its own `X-Forwarded-For`, and
through a port Docker publishes, every client may connect from the Docker
network's gateway, such as `172.17.0.1`, which the default includes; where
that matters, name only the addresses nothing but the proxy connects from.
- `METRICS_USERNAME` and `METRICS_PASSWORD`, default empty: with both set,
the backend records Prometheus metrics of its requests and serves them at
`/metrics` on the container port, to requests with this user name and
password as their basic auth credentials. With neither set, there are no
metrics and `/metrics` is not found. One set without the other, or a user
name containing `:`, stops the container
- `SENTRY_DSN`, default empty: set to a Sentry project's DSN, the backend
sends its errors to that Sentry project: each request whose handling
crashes, which still gets a 500 response. A value Sentry does not accept
stops the container. Empty, the backend sends nothing to Sentry
- `TRUSTED_PROXIES`, default empty: set it to the address the reverse proxy
in front of the container connects from, as an IP address or CIDR; several
are separated by commas. nginx takes the client address from
`X-Forwarded-For` only on a request from one of them, and the rate limit
counts that address. Unset, `X-Forwarded-For` is ignored and every client
behind the proxy shares the proxy's one allowance of `REPORTS_PER_MINUTE`.
Name only addresses nothing but the proxy connects from: any client that
connects from one can write its own `X-Forwarded-For`, and through a port
Docker publishes, every client may connect from the Docker network's
gateway, such as `172.17.0.1`.
- **Health check:** the image's `HEALTHCHECK` requests
`/.well-known/healthcheck` through nginx every 30 seconds, so it fails unless
both nginx and the backend answer. It also fails while reports cannot be
stored, as when the volume is full or `DATA_DIR` cannot be written: the health
check answers 503 from a failed write of a report file until a write succeeds,
and the backend tries the write again every minute. Three failed checks in a
row make the container `unhealthy`, and one that passes makes it `healthy`
again. upaas reads the container's health once, 60 seconds after a deploy, and
fails the deploy unless it is `healthy`. A container that turns `unhealthy`
after that is neither restarted nor reported by upaas, whose `unless-stopped`
restart policy ignores health; only `docker ps` and `docker inspect` show it.
The container also stops when either process exits.
both nginx and the backend answer. upaas reads the container's health 60
seconds after a deploy and fails the deploy unless it is `healthy`. The
container also stops when either process exits.
## Browser Compatibility
@@ -585,19 +259,19 @@ properties.
## Limitations
- **CORS**: The checks are cross-origin requests in `no-cors` mode, so the page
cannot read the answer, only time it: any answer counts as reachable, an error
page included.
- **Local targets**: The cable modem at 192.168.100.1 and the detected gateway
answer only on a network that has them, and only when NetWatch is served from
localhost or a private address (see Monitoring targets).
- **CORS**: Some hosts may block cross-origin HEAD requests. The app uses
`no-cors` mode which allows the request but provides opaque responses. Latency
is still measurable based on request timing.
- **Local gateway**: The 192.168.100.1 endpoint requires the host to be
accessible from your network.
- **Network conditions**: Measurements reflect browser-to-endpoint latency,
which includes your local network, ISP, and internet routing.
## TODO
The to-do list is [TODO.md](TODO.md): where the work stands, the next step, the
open work, and what has been done.
- Add configurable host list (environment variable or config file)
- Add latency history export (CSV/JSON)
- Add notification/alert when status changes to DEGRADED
## License
REPO_POLICIES.md
+88 -469
View File
@@ -1,6 +1,6 @@
---
title: Repository Policies
last_modified: 2026-10-18
last_modified: 2026-07-06
---
This document covers repository structure, tooling, and workflow standards. Code
@@ -54,37 +54,21 @@ style conventions are in separate documents:
`cibuild`. `script/bootstrap` installs all dependencies idempotently and
assumes nothing is present: base tools come from nix, apt, brew, or apk
(detected in that order; apt runs noninteractive). For node it uses the
installed node only when its major version is the pinned one; otherwise (node
missing, or another major, such as the node 24 the CI runner image ships) it
installs the PINNED node version via nvm and installs yarn and the packages
under it. nvm itself is installed first if missing, from a hash-verified
GitHub release archive (never `curl | sh`), with bash installed as an explicit
prerequisite since nvm requires bash. Only the major version is compared
because the `Dockerfile` stages start from a node image whose exact version is
not the pin, and nvm cannot install a prebuilt node on alpine. yarn is pinned
via `corepack prepare yarn@<version> --activate`. Never install "latest" or
"lts"; always exact versions. `script/cibuild` runs the CI build: it changes
to the repo root, runs `script/bootstrap`, runs `script/check`, and builds the
image with the version; the Gitea workflow calls it. **`script/cibuild` runs
`script/bootstrap` first**, because the workflow checks out the repo and runs
nothing else, while `script/fmt-check` runs the formatter on the host: on a
pristine checkout with nothing installed the run dies there, after the
containerised gates have passed. **The bootstrap alone is not enough**: when
`script/bootstrap` installs node and yarn under nvm it leaves neither on the
`PATH` of the shell that called it, so a bare `yarn` either exits 127 or runs
under another node. The host entrypoints that need yarn — `script/fmt` and
`script/fmt-check` — therefore use the same test as `script/bootstrap`: when
the node on `PATH` has the pinned major version they run the `yarn` on `PATH`,
and otherwise they load nvm through `$HOME/.nvm/nvm.sh` and run yarn under the
pinned node. A runner carrying nothing but docker and git then gets through
`script/check`. Four further scripts are our own extensions to the standard:
`script/check` runs `script/test`, `script/lint` and `script/fmt-check`;
`script/precommit` is what the git pre-commit hook runs, and it calls
`script/check`; `script/install-precommit` installs the git pre-commit hook
(the `make hooks` target shims to it); and `script/projectname` (literally
that filename) simply outputs the project's name. Scripts that need the name
call `script/projectname` — e.g. `script/docker` assembles its image tag from
it — so those scripts stay byte-identical across all repos. Repo-type-specific
installed node if present; otherwise it installs a PINNED node version via
nvm, first installing nvm itself if missing — from a hash-verified GitHub
release archive (never `curl | sh`), with bash installed as an explicit
prerequisite since nvm requires bash. yarn is then pinned via
`corepack prepare yarn@<version> --activate`. Never install "latest" or "lts";
always exact versions. `script/cibuild` runs the CI build: it changes to the
repo root and runs `docker build .`; the Gitea workflow calls it. Four further
scripts are our own extensions to the standard: `script/check` runs
`script/test`, `script/lint`, and `script/fmt-check`; `script/precommit` is
what the git pre-commit hook runs, and it calls `script/check`;
`script/install-precommit` installs the git pre-commit hook (the `make hooks`
target shims to it); and `script/projectname` (literally that filename) simply
outputs the project's name. Scripts that need the name call
`script/projectname` — e.g. `script/docker` assembles its image tag from it —
so those scripts stay byte-identical across all repos. Repo-type-specific
pre-commit extras (e.g. `go mod tidy` verification in Go repos) belong in
`script/precommit`, not in the hook itself. Model scripts are at
`https://git.eeqj.de/sneak/prompts/raw/branch/main/script/<name>`. The README
@@ -105,290 +89,87 @@ style conventions are in separate documents:
contributor should be able to understand the entire development workflow by
reading the Makefile.
- Every repo should have a `Dockerfile`, and it carries the repo's gates: a
`lint` phase and a `test` phase, with the final stage depending on both so the
image cannot be built unless they pass. For non-server repos the final stage
brings up a development environment; for server repos it is the runtime image.
The gate phases and the build stage start from their pinned base images and
install what those images lack either inline, as the canonical Go `Dockerfile`
below does for `git`, or by running `script/bootstrap`, as the `prompts`
repo's own `Dockerfile` does for its yarn packages. The development
environment stage installs development prerequisites by running
`script/bootstrap` rather than duplicating its installs inline. A stage that
runs `script/bootstrap` COPYs `script/` and the dependency manifests
(`package.json` + `yarn.lock`, `go.mod` + `go.sum`, etc.) before running it.
- Every repo should have a `Dockerfile`. All Dockerfiles must run `make check`
as a build step so the build fails if the branch is not green. For non-server
repos, the Dockerfile should bring up a development environment and run
`make check`. For server repos, `make check` should run as an early build
stage before the final image is assembled. Dockerfiles install development
prerequisites by running `script/bootstrap` rather than duplicating installs
inline; COPY `script/` and the dependency manifests (`package.json` +
`yarn.lock`, `go.mod` + `go.sum`, etc.) before running it so the bootstrap
layer stays cached until dependencies change.
- **Linting and testing run in Docker, as phases of the `Dockerfile`.** There is
no separate lint file. `script/lint` and `script/test` each build one phase
and nothing else:
- **Dockerfiles must use a separate lint stage for fail-fast feedback.** Go
repos use a multistage build where linting runs in an independent stage based
on the `golangci/golangci-lint` image (pinned by hash). This stage runs
`make fmt-check` and `make lint` before the full build begins. The build stage
then declares an explicit dependency on the lint stage via
`COPY --from=lint /src/go.sum /dev/null`, which forces BuildKit to complete
linting before proceeding to compilation and tests. This ensures lint failures
surface in seconds rather than minutes, without blocking on dependency
download or compilation in the build stage.
```sh
docker build --build-arg CACHEBUST="$(date +%s)-$$" \
--target lint --output type=cacheonly .
docker build --build-arg CACHEBUST="$(date +%s)-$$" \
--target test --output type=cacheonly .
```
**A stage that is not the last one in the file is built only when the final
stage's chain depends on it, or when `--target` names it.** That is why the
two gates are always invoked by name here, and why the final stage carries a
`COPY --from=` of a harmless file from each of them: without that edge a
plain `docker build .` builds the last stage alone and exits 0 having linted
and tested nothing.
**The gate builds write no image.** With `--output type=cacheonly` the phase
runs and a failing step fails the build, but the result is not exported.
Nothing uses those images, and writing one out is slow: a Go test phase's
image holds the toolchain. A build given neither `--output` nor `-t` writes
an untagged image and leaves it dangling, on every developer host and every
CI runner. `script/cibuild` and `script/docker` build the image that ships
and tag it, so each build replaces the previous image; each assigns the tag
on its own line before the build, so `set -e` stops it where
`script/projectname` fails.
Inside a phase the tool is invoked directly — `golangci-lint`, `go test`,
`eslint`, `prettier` — never through `make lint` or `script/test`, which are
themselves a `docker build` and would recurse into a daemon that does not
exist in a build step. Formatting is the exception and stays on the host:
`script/fmt` writes the working tree, and `script/fmt-check` is its
read-only twin.
**No lint verdict may come from a host invocation of the linter.** On a
shared host golangci-lint reads a result cache keyed on file content rather
than location, so a second checkout of the same content is served the first
one's findings, and a host-global lock in `$TMPDIR` makes concurrent runs
exit non-zero with `parallel golangci-lint is running` — a status a caller
cannot tell from real findings. Both have produced wrong verdicts in this
org, in both directions. A container has its own `TMPDIR`, so the lock is
out of reach. The lint phase does keep golangci-lint's cache between check
builds (below), but it lints every checkout at `/src`, and a finding is
taken from that cache only for the same files, settings and golangci-lint
version.
- **Any build that runs checks is given a new `CACHEBUST` value.** Docker
invalidates a `COPY` layer only when the copied content changes, so on an
unchanged tree the check `RUN` is served from cache, nothing executes, and the
build still exits 0. Every `docker build` in `script/` therefore passes
`--build-arg CACHEBUST="$(date +%s)-$$"`, the time and the script's process
id, so no two builds share a value, not even the three in one
`script/cibuild`. `script/lint`, `script/test`, `script/cibuild` and
`script/docker` are the four, and there is no fifth — `script/check` runs the
two gate phases and `script/fmt-check`, and builds no image of its own. In
every stage of the `Dockerfile`, `ARG CACHEBUST` comes right after the steps
that install system packages and download Go's modules, or right after `FROM`
in a stage with neither, and every step that lints, tests or compiles comes
after it. A step that installs anything else as well, such as a
`script/bootstrap` that also installs node packages, comes after it too. A new
value reruns every `RUN` step after that line; `COPY` steps are compared by
content and need nothing. Docker keeps the layers above the line until the
base image, their own lines or the files they copy change. A stage without the
`ARG` line is served from cache on an unchanged tree, so a repository
re-vendors the scripts and adds the `ARG` lines in one commit. The scripts do
not pass `--no-cache`: it reruns every step too, but it also builds the layers
above the line again and empties every cache mount, so Go's build cache and
golangci-lint's, which the canonical Go `Dockerfile` below mounts so that they
survive between check builds, would start empty every time. A bare
`docker build .` is not evidence that anything ran: a sub-second build
reporting success is a cache hit, not a result. Never invalidate by pruning —
`docker builder prune` and friends destroy a build cache shared with every
other build on the host. When a check is added or changed, prove it works by
planting a defect it must catch and watching the run fail on it, then revert
the defect. A green run alone shows neither that the check ran nor that it
covers what it should.
- **The gate phases are separate stages, and the build stage depends on both.**
The lint phase is based on the `golangci/golangci-lint` image (pinned by
hash), so lint failures surface in seconds rather than after a full compile,
and the test phase is based on the Debian Go image. The canonical Go repo
`Dockerfile`:
The standard pattern for a Go repo Dockerfile is:
```dockerfile
# In every stage ARG CACHEBUST comes right after the steps that install
# system packages and download Go's modules, or right after FROM in a
# stage with neither, and every step that lints, tests or compiles
# comes after it. script/ passes a new value on every build, which
# reruns every RUN step after it. Docker keeps the layers above it
# until the base image, their own lines or go.mod and go.sum change.
# The steps that compile mount Go's build cache, and golangci-lint run
# also mounts golangci-lint's; both survive from build to build.
# Lint phase
# Lint stage — fast feedback on formatting and lint issues
# golangci/golangci-lint:v2.x.x, YYYY-MM-DD
FROM golangci/golangci-lint@sha256:... AS lint
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
ARG CACHEBUST
COPY . .
RUN --mount=type=cache,target=/root/.cache/go-build \
--mount=type=cache,target=/root/.cache/golangci-lint \
golangci-lint run --config .golangci.yml ./...
RUN make fmt-check
RUN make lint
# Test phase. -race needs cgo and so a C compiler, which the Debian Go
# image ships and the alpine one does not. -count=1 because the mounted
# cache also holds test results, which go test would otherwise replay.
# golang:1.x, YYYY-MM-DD
FROM golang@sha256:... AS test
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
ARG CACHEBUST
COPY . .
RUN --mount=type=cache,target=/root/.cache/go-build \
go test -count=1 -timeout 90s -race -cover ./... || \
{ echo "--- Rerunning with -v for details ---"; \
go test -count=1 -timeout 90s -race -v ./...; exit 1; }
# Build stage. Nothing is wanted from either phase above; the copies
# are what make BuildKit build them first, so nothing after them can
# run unless lint and test passed.
# Build stage
# golang:1.x-alpine, YYYY-MM-DD
FROM golang@sha256:... AS builder
RUN apk add --no-cache git
WORKDIR /src
# Force BuildKit to run the lint stage before proceeding
COPY --from=lint /src/go.sum /dev/null
COPY go.mod go.sum ./
RUN go mod download
ARG CACHEBUST
COPY --from=lint /src/go.sum /dev/null
COPY --from=test /src/go.sum /dev/null
# A tar-stream context keeps the sender's file owners, which git refuses.
RUN git config --system --add safe.directory /src
COPY . .
RUN make test
# The VERSION build arg when one is given, otherwise
# `git describe --tags --always` on the .git in the build context. With
# .git present, a version that is still empty, dev or unknown fails the
# build: git is missing or could not read the checkout.
ARG VERSION
RUN --mount=type=cache,target=/root/.cache/go-build \
VERSION="${VERSION:-$(git describe --tags --always)}"; \
if [ -e .git ]; then \
case "$VERSION" in ""|dev|unknown) \
echo "version is '$VERSION' although .git is present" >&2; \
exit 1 ;; \
esac; \
fi; \
CGO_ENABLED=0 go build -trimpath \
-ldflags="-s -w -X main.Version=${VERSION}" \
-o /app ./cmd/app/
ARG VERSION=dev
RUN CGO_ENABLED=0 go build -trimpath \
-ldflags="-s -w -X main.Version=${VERSION}" \
-o /app ./cmd/app/
# Runtime stage, and the last one
# Runtime stage
FROM alpine@sha256:...
ARG CACHEBUST
COPY --from=builder /app /usr/local/bin/app
ENTRYPOINT ["app"]
```
Key points:
- The lint phase uses the `golangci/golangci-lint` image directly (it has
both Go and the linter), so nothing needs installing.
- `COPY --from=<phase> /src/go.sum /dev/null` is a no-op copy whose only
purpose is the ordering edge. BuildKit runs stages in parallel by default,
and a stage nothing depends on is not built at all, so without these two
lines a red gate would not fail the build.
- Keep the runtime stage last, and if you add a stage after it, give it the
same two copies. A plain `docker build .` builds the last stage's chain
and nothing else.
- Check builds keep these, and none of them can hand back a stale result:
- The layers above `ARG CACHEBUST`: the system packages and Go's
modules. Docker installs the packages again when the base image or the
install line changes, and downloads the modules again when `go.mod` or
`go.sum` changes. Go checks every module against `go.sum` as it
downloads it, and no later build can change a kept layer. The modules
are kept in a layer rather than a cache mount because a cache mount is
shared by every build on the host, and Go builds from whatever files
it holds without checking them again (only `go mod verify` does), so a
file changed there would go unnoticed.
- Go's build cache (`/root/.cache/go-build`, where Go keeps it for
root), mounted on the steps that compile: `golangci-lint run`, both
`go test` runs and `go build`. Go reuses a compiled package only when
all its inputs are unchanged. The cache also holds test results, which
is why both `go test` runs carry `-count=1`.
- golangci-lint's cache (`/root/.cache/golangci-lint`, where the pinned
image keeps it), mounted on `golangci-lint run`. golangci-lint reuses
a package's findings only when the package's files and those of every
package it imports, `go.mod`, the linters and their settings in
`.golangci.yml`, and the golangci-lint version are all unchanged.
- The lint stage uses the `golangci/golangci-lint` image directly (it
includes both Go and the linter), so there is no need to install the
linter separately.
- `COPY --from=lint /src/go.sum /dev/null` is a no-op file copy that creates
a stage dependency. BuildKit runs stages in parallel by default; without
this line, the build stage would not wait for lint to finish and a lint
failure might not fail the overall build.
- If the project uses `//go:embed` directives that reference build artifacts
(e.g. a web frontend compiled in a separate stage), the lint phase must
(e.g. a web frontend compiled in a separate stage), the lint stage must
create placeholder files so the embed directives resolve. Example:
`RUN mkdir -p web/dist && touch web/dist/index.html web/dist/style.css`.
- If the project requires CGO or system libraries for linting, install them
in the lint phase. The `golangci/golangci-lint` image is Debian-based and
has no `apk`, so install with `apt-get` under the Debian package name
(`libvips-dev`, where alpine says `vips-dev`), and delete the package
lists in the same `RUN`, so the layer does not keep them. The test phase,
on the Debian Go image, installs the libraries its tests need the same
way. Either install goes right after `FROM`, above `ARG CACHEBUST`, so
Docker keeps it until the base image or the install line changes:
```dockerfile
FROM golangci/golangci-lint@sha256:... AS lint
RUN apt-get update \
&& apt-get install -y --no-install-recommends libvips-dev \
&& rm -rf /var/lib/apt/lists/*
WORKDIR /src
COPY go.mod go.sum ./
RUN go mod download
ARG CACHEBUST
```
- `.dockerignore` lets `.git` into the build context. It keeps out every git
`config` at any depth (`**/.git/config`, `**/.git/modules/**/config`): the
repository's own, each submodule's under `.git/modules/`, and that of a
submodule keeping its own `.git` directory. `git describe` does not need
them, and each can hold a credential: a password in a remote URL, or the
token the CI checkout step stores there. A submodule whose name has a
`config` segment (`config`, `deploy/config`, `config/lib`) loses its whole
git directory to `**/.git/modules/**/config`, and Go's version stamping
then fails the build: give it a name without that segment
(`git submodule add --name`). The stage that compiles has `git` (the
Debian Go image has it; an alpine one needs `apk add --no-cache git`) and
takes the version from the `VERSION` build argument when one is given,
otherwise from `git describe --tags --always`. That gives the tag on a
tagged commit; on a later commit, the tag, the number of commits since it
and the short commit (`v1.2.3-4-gabc1234`); and the short commit when no
tag is reachable. The stage that compiles also marks its working directory
safe for git (`git config --system --add safe.directory /src`): a context
sent as a tar stream keeps the sender's file owners, and git refuses a
checkout owned by another user, so the version would come out empty.
`ARG VERSION` has no default, and the build fails if the context carries
`.git` and the version still comes out empty, `dev` or `unknown`. A plain
`docker build .` with no build arguments must succeed; a Dockerfile that
refuses an empty build argument drops that refusal and keeps the argument.
A checkout whose `.git` is a file (a linked worktree, or a repository
checked out as a submodule) is the exception: that file points to a git
directory outside the build context, so the build cannot read the version
and a plain `docker build .` fails; pass the version with
`--build-arg VERSION=...`, as `script/docker` and `script/cibuild` already
do.
The lint stage should not depend on the actual build output — it exists to
fail fast.
- If the project requires CGO or system libraries for linting (e.g.
`vips-dev`), install them in the lint stage with `apk add`.
- The build stage runs `make test` after compilation setup. Tests run in the
build stage, not the lint stage, because they may require compiled
artifacts or heavier dependencies.
- Every repo should have a Gitea Actions workflow (`.gitea/workflows/`) that
runs `script/cibuild` on push, and checks out the repo as its only other step,
with `persist-credentials: false`: `script/cibuild` needs no token, and
without it the checkout leaves the job's token in `.git/config` for every
later step. The checkout step also sets `fetch-depth: 0`, which fetches the
tags `git describe` needs: by default it clones shallow with no tags, and a
tagged repository's CI build would stamp a bare short commit id. The
workflow's `concurrency` block groups runs by workflow and branch
(`${{ github.workflow }}-${{ github.ref }}`) with `cancel-in-progress: true`,
so a new push cancels the older run on the same branch, queued or running, and
no other: runs for replaced commits do not hold up the shared runner.
`script/cibuild` bootstraps, runs the gate phases, and then builds the image,
so a successful run means every check passed; a bare `docker build .` does not
carry the same guarantee, because its gate phases may come from the cache. The
image build gets a `CACHEBUST` value of its own and so runs the gate phases a
second time. That is the price of the rule above, and it is worth paying: the
image that ships is built from a run of its own gates rather than from a cache
entry. The `check` job sets `timeout-minutes: 20`, so a hung build frees the
shared runner after 20 minutes. That allows for the three Docker builds
described above (the test phase, the lint phase, then the image), each held to
the 5-minute Docker build limit below, plus the bootstrap. A separate workflow
limited to `main` by a `branches` list under `on: push` cannot be checked by
review: to try a change to it, add the feature branch to that list and push,
then remove the branch from the list again before merging. Keep any job in it
that publishes behind `if: github.ref_name == 'main'`, so the run from the
feature branch publishes nothing.
runs `script/cibuild` (which runs `docker build .`) on push. Since the
Dockerfile already runs `make check`, a successful build implies all checks
pass.
- Use platform-standard formatters: `black` for Python, `prettier` for
JS/CSS/Markdown/HTML, `go fmt` for Go. Always use default configuration with
@@ -408,21 +189,14 @@ style conventions are in separate documents:
module under test to verify it compiles/parses. There is no excuse for
`make test` to be a no-op.
- `make test` must complete in under 60 seconds. That is the hard cap, and a
suite that exceeds it fails. Under 20 seconds is the target. A suite between
20 and 60 seconds is still green, but the overage must be filed as an
improvement bug against that repo. Add a 90-second timeout to the test
invocation (`go test -timeout 90s`). The backstop deliberately sits above the
hard cap so that it catches a genuinely hung test rather than a merely slow
one.
- `make test` must complete in under 20 seconds. Add a 30-second timeout in the
Makefile.
- **The test command should use the conditional verbose rerun pattern.** Run
tests without `-v` (verbose) first. If tests fail, automatically rerun with
`-v` to show full output. This keeps CI logs and `docker build` output clean
on success (just package/suite summaries) while providing full diagnostic
detail on failure (every test case, every assertion). The command lives in the
`test` phase of the `Dockerfile`, since `script/test` builds that phase; the
Makefile form below is the same pattern for any repo-local invocation:
- **`make test` should use the conditional verbose rerun pattern.** Run tests
without `-v` (verbose) first. If tests fail, automatically rerun with `-v` to
show full output. This keeps CI logs and `docker build` output clean on
success (just package/suite summaries) while providing full diagnostic detail
on failure (every test case, every assertion). The general shell pattern:
```makefile
test:
@@ -435,25 +209,11 @@ style conventions are in separate documents:
```makefile
test:
@go test -count=1 -timeout 90s -race -cover ./... || \
@go test -timeout 30s -race -cover ./... || \
{ echo "--- Rerunning with -v for details ---"; \
go test -count=1 -timeout 90s -race -v ./...; exit 1; }
go test -timeout 30s -race -v ./...; exit 1; }
```
`-count=1` is required on both invocations: it defeats Go's test _result_
cache, so neither run can report a stored pass in place of running the
tests. It leaves the build cache alone, so it costs the runtime of the suite
and no recompilation.
That cache is Go's own, separate from Docker's layer cache. Go stores a
passing result in its cache directory (`GOCACHE`), and when the same tests
run again on unchanged code it prints that result, marked `(cached)`,
without running them. The directory lasts from one run to the next on a
developer's machine, where this target runs, and in the `test` phase of the
`Dockerfile`, which mounts it to keep compiled packages between check
builds, so the phase's `go test` runs carry `-count=1` too. A new
`CACHEBUST` value (above) is what makes that step run on an unchanged tree.
Python example:
```makefile
@@ -479,89 +239,10 @@ style conventions are in separate documents:
must be in `.gitignore`. No exceptions.
- `.gitignore` should be comprehensive from the start: OS files (`.DS_Store`),
editor files (`.swp`, `*~`), in-repo agent scratch directories (`.claude/`),
`node_modules/`, and the repo's own build outputs. Fetch the standard
`.gitignore` from
editor files (`.swp`, `*~`), language build artifacts, and `node_modules/`.
Fetch the standard `.gitignore` from
`https://git.eeqj.de/sneak/prompts/raw/branch/main/.gitignore` when setting up
a new repo. A repo's `.gitignore` is the standard file followed by the repo's
own entries, such as its binaries; a re-vendor replaces the standard part and
keeps those entries. These patterns are written to `.gitignore`'s own
semantics, in which an unanchored pattern already matches at every depth; they
are not a `.dockerignore` and must not be transplanted into one unmodified.
- **`.dockerignore` does not use `.gitignore` semantics, and copying patterns
across unmodified leaves secrets in the build context.** Docker matches with
`moby/patternmatcher`: `filepath.Match` semantics plus a `**` extension, so
`*` does not cross `/` and a pattern without a leading `**/` is anchored at
the build-context root. A `.dockerignore` listing `.env`, `*.pem` and `*.key`
therefore excludes only the copies at the repository root, while `config/.env`
and `certs/server.key` still reach the context and can land in an image layer
— which is more dangerous than a short file with no secret patterns at all,
because it reads as solved and stops anyone looking. Give every
depth-independent pattern the `**/` prefix and leave only genuinely
root-anchored entries unprefixed: `.claude`, and the repo's own host-built
binary, written `/myapp` and never `**/myapp`, which would also match
`cmd/myapp/` and delete the package directory from the context. Matching is
case-sensitive, and an ALL-CAPS twin per pattern still misses `Server.Key`, so
secret names use character ranges — `**/*.[kK][eE][yY]`, `**/*.[pP][eE][mM]`,
and likewise for `.envrc` and the extensionless SSH keys. Where such a pattern
also catches something the build needs, re-include it with a negation
(`!docs/example.env`); deleting the pattern reopens the exposure for every
other file it covers. Fetch the standard `.dockerignore` from
`https://git.eeqj.de/sneak/prompts/raw/branch/main/.dockerignore` and extend
it with the repo's own artifacts.
- **In-repo agent scratch belongs in both files, written to each file's own
semantics.** `.claude/` holds one worktree per in-flight agent — an entire
additional checkout of the repo — so under `COPY . .` the build context
inflates by a multiple of the repo and another session's unreviewed work can
be copied into an image layer. In `.gitignore` the entry is `.claude/`,
unanchored. In `.dockerignore` it is `.claude`, anchored and with **no** `**/`
prefix, because the prefixed form would also delete any nested directory of
that name from the build. Anchoring carries a known gap that the canonical
`.dockerignore` states in its own comment, since consuming repos receive the
file and not the tracker: the directory is created in the agent's working
directory, so a repo running agents in subdirectories still ships
`services/api/.claude/` and must add its own anchored entry there.
- **A plain `docker build .` of a clone stamps the version that
`git describe --tags --always` gives**, derived from the `.git` in the build
context as the canonical `Dockerfile` above shows. Without its failure check,
a missing `git` or an unreadable checkout would leave `-X main.Version=` empty
and the build would still exit 0. `script/docker` and `script/cibuild` pass
the version they compute on the host; it takes precedence. They do this
byte-identically across repos:
```sh
# The version and the tag each get their own line: a failing command
# substitution inside an argument does not trip `set -e`, so the inline
# form degrades to an empty constant.
version="$(git describe --tags --always --dirty 2>/dev/null || true)"
[ -n "$version" ] || version="unknown"
tag="$(script/projectname)"
docker build --build-arg CACHEBUST="$(date +%s)-$$" \
--build-arg VERSION="$version" \
-t "$tag" .
```
`--always` makes an untagged repo yield an abbreviated commit hash rather
than failing, and the `[ -n "$version" ]` line is the single place the
fallback is applied — a live check that fires on a build from an export with
no `.git` and on a repository with no commits yet. Do not fold it into the
substitution as `|| echo unknown`, which makes the guard unreachable. The
Dockerfile's side is `ARG VERSION` in the stage that compiles, declared
there because `ARG` is stage-scoped; passing `VERSION` to a repo whose
Dockerfile declares no such `ARG` is ignored and costs nothing, which is why
the scripts stay byte-identical. One consequence for CI: the standard
checkout action clones shallow and fetches no tags, so the canonical
`.gitea/workflows/check.yml` sets `fetch-depth: 0` on its checkout step.
- **Verify `.dockerignore` by enumerating the image, not by reading the
patterns.** Plant files at the root _and_ at least two directories deep, build
a probe image that does `COPY . .`, and list what actually landed
(`docker run --rm --entrypoint find IMAGE /app`). The `transferring context`
size is not a substitute: a nested secret is a few bytes, and BuildKit
transfers only the delta from the previous build.
a new repo.
- **No build artifacts in version control.** Code-derived data (compiled
bundles, minified output, generated assets) must never be committed to the
@@ -577,61 +258,9 @@ style conventions are in separate documents:
- Make all changes on a feature branch. You can do whatever you want on a
feature branch.
- `.golangci.yml` is standardized. The vendored copy in a consuming repo must
_NEVER_ be modified by an agent: fetch it from
`https://git.eeqj.de/sneak/prompts/raw/branch/main/.golangci.yml` and keep it
byte-identical, so that no repo can quietly loosen its own linting. Linter
configuration changes are made to the canonical copy in the `prompts` repo and
reach consuming repos by re-vendoring; an agent may open a PR against
canonical, which only the user merges. One list is exempt from byte-identity,
because it cannot be written once for every repo: the `deny` list of the
`test-support` depguard rule, where a repo names its own test-support packages
by full import path. A repo adds entries there and changes nothing else, and a
re-vendor carries its entries forward. The canonical golangci-lint version is
v2.14.0 (released 2026-09-24), pinned as the digest of the lint phase's base
image
(`golangci/golangci-lint@sha256:ad862ba6b3798cbe0fd9fd7408d498fd74fbd2623a92406b2fd3898faf0bf98f`,
which reports `2.14.0 built with go1.27.0 from 114493f9`). A module's `go`
directive must not name a newer Go minor version than the one golangci-lint
was built with, or golangci-lint refuses to lint it: this release lints
`go 1.27.1` but not `go 1.28`. That digest is the only pin, since no repo
installs golangci-lint on the host. A repo sets the lint phase digest to the
one named here and re-vendors `.golangci.yml` in the same commit, whichever of
the two prompted the change: the canonical copy can name linters that an older
golangci-lint rejects, and a newer golangci-lint can add linters that
`default: all` switches on until the canonical copy disables them.
- **`script/bootstrap` installs a pinned tool by comparing versions, never by
testing presence.** An `if ! command -v <tool>; then install; fi` guard tests
`PATH` only, so on an already-provisioned machine the pin is inert and a
version bump is a silent no-op — while the Dockerfile, installing into a clean
image, gets the pinned version, so a local `make check` and `make docker` can
disagree about what the tool even is. The canonical form:
- compares the installed version against the pin over the **whole** version
token; a parser that stops at the first `-` reports `2.12.2` for a host
running `2.12.2-rc1` and skips the install;
- treats absent, non-zero, empty or unrecognised `--version` output as a
mismatch, so the failure direction is a redundant install and never a
skipped one;
- after installing, re-resolves the binary the way callers do — `hash -r`,
then through `PATH`, not through the directory the installer wrote to —
and fails naming the resolved path, since an install that a shadowing
binary hides succeeds while changing nothing any caller sees;
- is actually called, and prints the version on both success paths: a
function defined and never invoked has the same exit status and the same
empty output as one that worked.
Node is the exception to the whole-token comparison: the canonical
`script/bootstrap` compares only its major version, because the node 22
alpine image the `Dockerfile` stages start from is not the exact pin, and
nvm cannot install a prebuilt node on alpine.
Keep it POSIX sh: no arrays, no `[[`, no `grep -P`.
A Go tool a repo needs on the host is installed with `go install` pinned to
a commit hash (`go install <package>@<commit hash>`). It is never tracked as
a `go.mod` tool dependency or through a `tools.go` file, either of which
pulls the tool's own dependencies into the repo's `go.mod` and `go.sum`.
- `.golangci.yml` is standardized and must _NEVER_ be modified by an agent, only
manually by the user. Fetch from
`https://git.eeqj.de/sneak/prompts/raw/branch/main/.golangci.yml`.
- When pinning images or packages by hash, add a comment above the reference
with the version and date (YYYY-MM-DD).
@@ -742,21 +371,15 @@ style conventions are in separate documents:
Never edit existing migrations after release.
- All repos should have an `.editorconfig` enforcing the project's indentation
settings: the standard file from
`https://git.eeqj.de/sneak/prompts/raw/branch/main/.editorconfig`, which sets
tabs for `Makefile` and Go files, followed by the repo's own sections, such as
one for another language it uses. A re-vendor replaces the standard part and
keeps those sections.
settings.
- Avoid putting files in the repo root unless necessary. Root should contain
only project-level config files (`README.md`, `AGENTS.md`, `Makefile`,
`Dockerfile`, `LICENSE`, `.gitignore`, `.editorconfig`, `REPO_POLICIES.md`,
and language-specific config). Everything else goes in a subdirectory.
Canonical subdirectory names:
only project-level config files (`README.md`, `Makefile`, `Dockerfile`,
`LICENSE`, `.gitignore`, `.editorconfig`, `REPO_POLICIES.md`, and
language-specific config). Everything else goes in a subdirectory. Canonical
subdirectory names:
- `bin/` — executable scripts and tools
- `cmd/` — Go command entrypoints; thin only: one `main.go` per binary whose
body is a single call into `internal/` or `pkg/`, no project logic in
`cmd/`
- `cmd/` — Go command entrypoints
- `configs/` — configuration templates and examples
- `deploy/` — deployment manifests (k8s, compose, terraform)
- `docs/` — documentation and markdown (README.md stays in root)
@@ -783,7 +406,3 @@ style conventions are in separate documents:
- Go: `go.mod`, `go.sum`, `.golangci.yml`
- JS: `package.json`, `yarn.lock`, `.prettierrc`, `.prettierignore`
- Python: `pyproject.toml`
- Guidance for coding agents lives in one `AGENTS.md` at the repository root. It
is never committed under a file or directory named after one agent tool, such
as `CLAUDE.md` or `.claude/`, and never split into separate memory files.
TODO.md
+19 -476
View File
@@ -1,473 +1,28 @@
# Workflow
- branch from `next`
- branch (from `main`)
- do the work in Next Step
- move Next Step to the top of Completed Steps
- move the top item of Future Steps into Next Step
- commit (`TODO.md` changes in the same commit as the work)
- push the branch and open a PR against `next`
- merge to `main` if the branch is not protected, otherwise open a PR
- push
# Status
pre-1.0. Release candidates are tagged on `next`, the first being `v1.0.0-rc1`;
`git tag --merged origin/next` lists them. `main` is the stable branch and
`next` the development branch, which every PR targets. The frontend and the Go
backend ship as one Docker image, and the Gitea workflow
`.gitea/workflows/check.yml` runs `script/cibuild` on every push, and cancels
the older run on the same branch. Working toward 1.0.0.
pre-1.0. No git tags. `feat/reportbuf-storage` is merged; the backend, the CI
workflow, and the backend repo standard files are all on `main`. Frontend and
backend are both functional. Working toward the 1.0.0 milestone by closing the
remaining repo-compliance issues on the tracker.
# Next Step
Run `make frontend-viewport-test` in CI as its own step; it is not part of
`make check`, as it needs Docker and takes minutes.
Confirm the `.gitea/workflows/check.yml` run is green (main always green
policy). The workflow file is already on `main`; what is unverified is that its
latest run passes.
# Completed Steps
- 2026-10-19: the server's `OnStart` hook in `internal/server/server.go` starts
`listenAndServe` with `go func() { s.listenAndServe() }()`, as the Go style
guide asks ([#162](https://git.eeqj.de/sneak/netwatch/issues/162)); it was
`go s.listenAndServe()`. No other `go` statement in the Go code called a
function directly. Nothing the server does changed
- 2026-10-19: `.gitignore`, `.editorconfig` and `.golangci.yml` are the
sneak/prompts copies at `0653579`
([#174](https://git.eeqj.de/sneak/netwatch/issues/174)). `.gitignore` is the
standard file followed by this repository's own entries; `.editorconfig` is
the standard file alone, which now carries the `[*.go]` section.
`.golangci.yml` disables `canonicalheader`, as the canonical copy does,
because golangci-lint v2.14.0 misses its findings at random
- 2026-10-19: `package.json` has no `version` field and is marked
`"private": true` ([#158](https://git.eeqj.de/sneak/netwatch/issues/158)). It
said `1.0.0`, a release that has not been made, and nothing read it; the git
tag is the one version, which the image and `make build` take from
`git describe --tags`. The package is never published
- 2026-10-19: Status names `v1.0.0-rc1`, the first release candidate, and says
release candidates are tagged on `next`, where it said there were no git tags
([#157](https://git.eeqj.de/sneak/netwatch/issues/157)). The rest of Status
matches the tree
- 2026-10-19: `netwatch-server` starts the server only when given no arguments
([#179](https://git.eeqj.de/sneak/netwatch/issues/179)). `check-cidr CIDR` and
`prepare-data-dir DATA_DIR` behave as before; any other arguments, such as a
subcommand with no value or two, or a misspelt one, print a one-line usage
message naming both forms to stderr and exit 2. They used to start the server.
Unit tests call `cli.Main` with no arguments and check that it starts the
server, and with each subcommand given no value and two values and with a
misspelt subcommand, and check the exit code, the message and that the server
does not start
- 2026-10-19: `main()` in `cmd/netwatch-server/main.go` is one call into a new
package, `internal/cli`, as the Go style guide asks
([#160](https://git.eeqj.de/sneak/netwatch/issues/160)). `internal/cli` runs
the `check-cidr` and `prepare-data-dir` subcommands, with the same arguments,
messages and exit codes, and otherwise the server, with the `fx` wiring.
`Appname` and `Version` stay in `main`, where the build sets `Version`, and
`main` gives `cli.Main` stderr and the function that runs the server, which
the tests replace with a buffer and a function that fails them. Unit tests
call `cli.Main` with `check-cidr` and a CIDR the server takes and one it
refuses, and check the exit code and what it writes to stderr, and with
`prepare-data-dir` and a path outside `/data`, and check that it exits 1 with
the error from looking up the `netwatch` user, which the test image does not
have. Others give the functions behind the subcommands input they take and
input they refuse, and check the exit code and what they write to stderr
- 2026-10-19: when `VERSION` is unset or empty, `script/build` stamps the
version from `git describe --tags --always --dirty`, as `script/docker` does
([#156](https://git.eeqj.de/sneak/netwatch/issues/156)). Without `--tags` it
skipped lightweight tags, so `make run` could report a commit where the image
built from the same tree reported the tag. Checked once with a lightweight tag
on a scratch clone: `make build` stamped it
- 2026-10-19: `.dockerignore` keeps Go test binaries and coverage output at the
root out of the build context, with `/*.test` and `/*.out` in the repository's
own section ([#155](https://git.eeqj.de/sneak/netwatch/issues/155)). Such
files went into the build context of every `docker build` in `script/` and
were copied into the lint, test and build stages. Checked with a probe image
that copies the whole context: `x.test` and `x.out` planted at the root no
longer land in it, and nothing else changed. The entries match only at the
root, so the same files in a subdirectory still reach the image
- 2026-10-19: `.gitea/workflows/check.yml` is the sneak/prompts copy at
`0653579` ([#153](https://git.eeqj.de/sneak/netwatch/issues/153)). Its
checkout step sets `fetch-depth: 0`, so CI clones all history and tags, and
`git describe` in `script/cibuild` gives the image built from a tagged commit
the tag as its version; it gave the short commit. The checkout step also sets
`persist-credentials: false`, so the job's token is not left in `.git/config`.
A new push cancels the older run on the same branch, and a run stops after 20
minutes
- 2026-10-19: `script/bootstrap` keeps the `yarn` on `PATH` only when
`yarn --version` is exactly `YARN_VERSION`, and otherwise installs that
version as it did when no yarn was installed
([#154](https://git.eeqj.de/sneak/netwatch/issues/154)); any yarn used to be
kept. It uses the `node` on `PATH` only when that node has the major version
of `NODE_VERSION`, as `REPO_POLICIES.md` asks, and is at least
`NODE_MIN_VERSION`; a node 24 was kept before. After installing node or yarn
it looks the tool up through `PATH` again and stops if that one fails the same
check, as it does for Go, and it prints the node and yarn versions it uses.
Every script that runs yarn on the host, except `script/bootstrap`, which
picks its own node and yarn, runs it through the new `script/yarn`. That
script puts `~/.local/bin` first on `PATH`, uses the first `node` on that
`PATH` when it passes the same test, and otherwise runs yarn under the pinned
node in nvm; `make build` ran yarn under whatever node was first on `PATH`
- 2026-10-19: `bin/entrypoint.sh` has each of its steps in a function, and a
`main` at the end calls them in order, as the shell section of the code style
guide asks ([#163](https://git.eeqj.de/sneak/netwatch/issues/163)). It is
still POSIX sh with no `set -e`, and does what it did, with the same messages
and exit codes. Checked by running the image with each script: a normal start,
bad `PORT`, `TRUSTED_PROXIES` and `DATA_DIR` values, `docker stop`, INT, and
nginx exiting on its own
- 2026-10-19: while report files cannot be written, the health check answers 503
with `"status":"error"` and the same fields, so the image's `HEALTHCHECK`
reports the container `unhealthy`
([#142](https://git.eeqj.de/sneak/netwatch/issues/142)). It answered 200
`"status":"ok"` whatever happened, so the platform saw a healthy container
while every report was refused with 500. It answers 200 at start, before any
write has failed, and again from the first write that succeeds. A unit test
removes `DATA_DIR` to make a write fail and checks the 503, then puts it back
and checks the 200 after the next write
- 2026-10-19: report file writes no longer overlap
([#150](https://git.eeqj.de/sneak/netwatch/issues/150)), so the reports of
failed writes are written in the order they arrived. Two writes that failed at
the same time put their reports back in the wrong order when the older failed
first. One write runs at a time, and each takes the waiting reports only when
it starts, after a failed write has put its own back. The write `Append`
starts when 10 MiB are waiting waits for any write under way, and `Append`
starts no other while it waits. Files written since the start are deleted to
make room in the order they were written, after those found at start. A unit
test holds a write open, starts a second at 10 MiB, fails both and checks the
order in the next file. Others check that `Append` starts no second write at
10 MiB while one waits, that it starts one again the next time 10 MiB are
waiting, and that the first file written since the start is the first deleted
- 2026-10-19: `DEBUG` unset or empty leaves debug logging off, and any other
value, `false` and `0` included, turns it on, as the code style guide says
([#159](https://git.eeqj.de/sneak/netwatch/issues/159)). No value of it stops
the start any more; before, only `1`, `t`, `T`, `TRUE`, `true`, `True`, `0`,
`f`, `F`, `FALSE`, `false` and `False` were accepted. `README.md` no longer
gives `false` as its default
- 2026-10-19: check builds keep Go's modules and compiled packages between runs
([#118](https://git.eeqj.de/sneak/netwatch/issues/118)), on sneak's rulings in
[prompts#113](https://git.eeqj.de/sneak/prompts/issues/113) and
[prompts#130](https://git.eeqj.de/sneak/prompts/issues/130).
`REPO_POLICIES.md`, `script/test`, `script/lint`, `script/docker` and
`script/cibuild` are the sneak/prompts copies at `0653579`: the scripts pass a
new `CACHEBUST` value where they passed `--no-cache`, and the lint and test
builds write no image. In each stage of `Dockerfile`, `ARG CACHEBUST` comes
after the system packages and the Go module download, and before every step
that lints, tests or compiles and the node stages' `yarn install`. Go's build
cache and golangci-lint's are cache mounts, and both `go test` runs carry
`-count=1`. The test phase's Go caches used to be in memory, empty on every
build
- 2026-10-19: the three unit tests of a check whose result is discarded (its
round given up, the user paused, or the first round) also check that the
host's history is still empty, its status still `pending`, and nothing was
written to the console
([#151](https://git.eeqj.de/sneak/netwatch/issues/151)). They checked only the
row, so a change that recorded the result and skipped only the row would have
kept them passing
- 2026-10-18: when the backend runs on its own, a `DATA_DIR` that cannot be
created or read, or where no file can be created, stops the start with an
error naming `DATA_DIR` and its value, as the other settings' errors do
([#148](https://git.eeqj.de/sneak/netwatch/issues/148)); the first two named
only the path, and the third was found only at the first write of a report
file. At start the server creates a file in `DATA_DIR` and removes it. Unit
tests start the buffer with `DATA_DIR` below a regular file and with
`DATA_DIR` set to `/proc`, and check the error. The report file number is an
`atomic.Int64`, as the Go style guide asks for int types
([#161](https://git.eeqj.de/sneak/netwatch/issues/161)); file names are
unchanged
- 2026-10-18: the image's nginx sends the page with `Cache-Control: no-cache`
([#141](https://git.eeqj.de/sneak/netwatch/issues/141)), so a browser that
keeps a copy checks with the server that it is current before using it again.
The page went out with no `Cache-Control`, so a browser could keep it after a
deploy and ask for files under `/assets/` that the new build no longer has,
and show an empty page. A path that `location /` answers with the page through
its `try_files` fallback gets the same header. `location /` now includes the
security headers again, as `/assets/` does, since its own `add_header` drops
the server's. `/assets/` keeps its immutable caching.
`make frontend-viewport-test` fails unless `/` and a path that falls back to
the page carry `Cache-Control: no-cache` and `Content-Security-Policy`, which
comes from the same file as the other security headers
- 2026-10-18: `README.md` says what the page loses while reports are refused or
the page is paused ([#145](https://git.eeqj.de/sneak/netwatch/issues/145)),
how fast one address can replace the stored reports
([#146](https://git.eeqj.de/sneak/netwatch/issues/146)), and that in the image
nginx answers a body over 1 MiB itself
([#147](https://git.eeqj.de/sneak/netwatch/issues/147)). A sample in the
history that no report has delivered is sent only as long as the history holds
it: at the 1-second interval one refused or failed report loses the oldest 20
seconds of each host's samples, and a pause longer than the history loses
every sample between the last delivered report and the pause. Samples an
interval change cleared are kept apart, the last 100 per host, until they are
delivered. At the defaults, one address sending 1 MiB reports made up to
compress badly can fill the 1 GiB cap in about 17 minutes. nginx's
`client_max_body_size` is also 1 MiB by default, so in the image it answers a
larger body with 413 and its own HTML page, and the backend never sees or
records it; the backend's own 413 sentences now say they apply to it run on
its own. The reporter, the body limit and nginx are unchanged
- 2026-10-18: a browser that cannot format the header's clocks still probes
([#149](https://git.eeqj.de/sneak/netwatch/issues/149)). The clocks name the
local time zone through `Intl.DateTimeFormat`'s `shortGeneric` option, which
Chrome before 95, Firefox before 91 and Safari before 15.4 reject with an
error; it came before the first round started, so such a browser never checked
a target. The clocks now start last, after the rounds, and an error formatting
them leaves both blank. The footer's color legend reads `>=500ms` for red,
where it read `>500ms`, so 500 ms, which is red, is in one of its colors
([#152](https://git.eeqj.de/sneak/netwatch/issues/152)). Unit tests check the
clocks with a working `Intl.DateTimeFormat` and with one that rejects
`shortGeneric`, and draw the page and check the legend against every entry of
`CONFIG.latencyColors`
- 2026-10-18: `netwatch-server prepare-data-dir` no longer changes the owner of
a file outside `/data` through a hard link in the volume
([#143](https://git.eeqj.de/sneak/netwatch/issues/143)). A file with a second
name (hard link) keeps its owner, and the start logs its path. Owners are now
set on the opened directory, file or link, never by name, so a hard link
swapped in after the check is caught too; a symbolic link is opened without
following it and given to the netwatch user itself, so the server can still
follow one in a sticky directory that anyone can write to. Devices, named
pipes and sockets keep their owner. Setting the owner on an open file that is
not a directory is built only for Linux: `prepare-data-dir` runs only in the
Linux image, and macOS, where the backend is also built for development, has
neither `O_PATH` nor `AT_EMPTY_PATH`. On any other system the package still
builds, and `prepare-data-dir` fails at the first file that is not a
directory. The test that runs as root hard-links a file, a symbolic link and a
named pipe from outside the volume into it and finds their owners unchanged
- 2026-10-18: from a trusted proxy, the backend takes the client address from
the right-most `X-Forwarded-For` entry that is not in `TRUSTED_PROXIES`
([#144](https://git.eeqj.de/sneak/netwatch/issues/144)). It took the left-most
entry, which the client writes itself behind a proxy that appends to the
header, so a client could choose the address the rate limit counts and the
request log records. An entry written as an address with a port is read as
that address. With only trusted addresses in the header, or an entry that is
not an address at all (such as `unknown`) met on the way, the direct peer is
used. `X-Real-IP` is read only without `X-Forwarded-For`, and every
`X-Forwarded-For` header line is read, not only the first. The image's nginx,
and the `TRUSTED_PROXIES=127.0.0.1/32` it starts the backend with, are
unchanged; the comment in `configs/nginx.conf` that said the backend takes the
first entry now says it takes the one address nginx passes on. Unit tests
resolve the address from chains ending in an untrusted address, in trusted
ones, of only trusted ones, with ports, with an entry that is not an address,
and split over two header lines
- 2026-10-18: after an interval change, the summary's Reachable slot reads
`--/--` in white, as at page load, until the second round since the change
ends ([#140](https://git.eeqj.de/sneak/netwatch/issues/140)). It used to read
0/26 in red from the change on, as no WAN host had a check recorded, for up to
two intervals with the network fine. The summary update now writes `--/--`
while every WAN host still waits for its first check. A unit test resets the
hosts as the interval menu does and checks the slot; another checks that it
reads 0/26 in red once every WAN host's check has failed
- 2026-10-14: stopping the server waits for a report file write already under
way, the periodic flush's or the one `Append` starts when 10 MiB are waiting,
before the final flush
([#122](https://git.eeqj.de/sneak/netwatch/issues/122)). It used to return at
once, and the process exiting cut the write off, losing its reports. A write
under way that fails puts its reports back in memory, so the final flush
writes them; the stop fails, and the process exits non-zero, only if that
flush fails too. Two tests hold the periodic write and the one at 10 MiB open
and find the stop waiting until each is released; a third makes the held write
fail and finds its report written by the final flush. They run in a
`testing/synctest` bubble, so the periodic flush comes without waiting a
minute
- 2026-10-14: `make test` no longer runs the frontend's production build, which
the tests do not need ([#118](https://git.eeqj.de/sneak/netwatch/issues/118)).
`yarn build` moved out of the stage that runs the frontend's unit tests, now
named `frontend-test`, into a new `frontend-build` stage, which starts from it
and, like the `builder` stage, waits on the lint and test phases, so the image
still cannot be built unless they pass. The runtime stage copies `dist/` from
it, and the `git` that `vite.config.js` reads the commit with is installed
there. No build cache was added
- 2026-10-14: opening the debug log no longer raises the measured latencies
([#131](https://git.eeqj.de/sneak/netwatch/issues/131)). With the panel open,
each line written drew the panel again with every line before it, up to 1000,
and a check that ends while the page draws is timed only when the drawing is
done. Each line is now added at the end of the open panel, its first line is
dropped once it holds more than 1000, and it scrolls to its newest line once a
frame rather than once a line; the whole panel is drawn only when it is
opened. A unit test writes more lines than the panel keeps and checks that the
lines already shown are left as they are
- 2026-10-14: unset, the backend's own `TRUSTED_PROXIES` trusts `10.0.0.0/8`,
`172.16.0.0/12` and `192.168.0.0/16`, and no longer loopback; a list replaces
that; set and empty, it trusts no proxy, where it used to get the default, as
viper reads an empty environment variable as unset
([#129](https://git.eeqj.de/sneak/netwatch/issues/129)). A value it cannot
parse still stops the start, and the image still starts the backend with
`TRUSTED_PROXIES=127.0.0.1/32`. Tests load the config with it unset, empty and
set to a list
- 2026-10-14: while report files cannot be written, `POST /api/v1/reports`
answers 500, and storing recovers once writing works again, with no restart
([#123](https://git.eeqj.de/sneak/netwatch/issues/123)). A failed write puts
its reports back in the report buffer, still counted against
`DATA_DIR_MAX_BYTES`, where they used to be lost; the next flush, within a
minute, tries them again. Until a write succeeds, every report is refused and
nothing of it is kept, so the buffer does not grow while writes fail. A test
posts reports through the report handler before, during and after a failure;
others check that a report appended while a write runs is kept, behind that
write's own, when the write fails, and that the cap still holds exactly once a
failed write's reports are written
- 2026-10-14: a request whose handler panics is logged with status 500 and
counted with `code` 500 in the metrics
([#125](https://git.eeqj.de/sneak/netwatch/issues/125)), not 200. `Recoverer`
is still the first middleware; `Write500OnPanic`, after the request log and
after the metrics, writes the 500 as the panic passes and lets it go on to
Sentry and `Recoverer`, which now writes a 500 only when no status was written
- 2026-10-14: with `TRUSTED_PROXIES` unset, the container's nginx trusts the
three private ranges of RFC 1918, `10.0.0.0/8`, `172.16.0.0/12` and
`192.168.0.0/16` ([#119](https://git.eeqj.de/sneak/netwatch/issues/119)), as
sneak ruled on 2026-09-22 for every app; it trusted no proxy before. A list
replaces them, and set and empty it trusts none. The backend inside the
container still trusts only `127.0.0.1/32`
- 2026-10-14: `POST /api/v1/reports` takes only a report sent with
`Content-Type: application/json`, parameters such as `charset` allowed, and
refuses any other with 415 and the usual error body, storing nothing
([#126](https://git.eeqj.de/sneak/netwatch/issues/126)). A page on another
origin can send a `text/plain` POST without a CORS preflight, so any site
could make its visitors' browsers store reports; a JSON POST waits for the
preflight, which only an origin in `CORS_ALLOWED_ORIGINS` passes. The page
already sent `application/json`. A test posts a report as `text/plain`, as
`application/x-www-form-urlencoded`, as `multipart/form-data`, with no
`Content-Type`, and as `application/json` with and without a charset, and
checks which are stored
- 2026-10-14: changing the interval no longer drops the samples not yet reported
to the backend ([#124](https://git.eeqj.de/sneak/netwatch/issues/124)). The
interval menu resets each host with the new `HostState.reset`, which moves the
history's entries to `clearedHistory`, keeping the last 100 of all it has
cleared, and `buildReport` reads both, so the next report has the samples
recorded before the change that no report has delivered. Until its next check,
such a host is sent with the status of its last check, not `pending`. The
page's history still starts over, and the per-host marks still leave out of a
report the samples a delivered one had. Unit tests reset a host as the
interval menu does and find its unreported samples in the next report, and
only the last 100 after more were cleared; `web/src/main.js` now exports
`Reporter` for them
- 2026-10-14: the repo has the layout `REPO_POLICIES.md` gives
([#30](https://git.eeqj.de/sneak/netwatch/issues/30)). The Go module is at the
root (`go.mod`, `go.sum`, `.golangci.yml`, `cmd/netwatch-server/`,
`internal/`), so its path `sneak.berlin/go/netwatch` names the repository.
`go.mod` ignores `node_modules/`, where npm packages can ship `.go` files that
`make tidy` would otherwise read as this module's packages. The page's source
is in `web/` (`index.html`, `src/`), which `vite.config.js` makes Vite's root;
the build still goes to `dist/`. `nginx.conf` and `security-headers.conf` are
in `configs/`. `backend/` is gone: its `LICENSE` and `.dockerignore` are
deleted, its `.gitignore` entries are in the root one, its `README.md` is
folded into the root `README.md`, and its scripts into the root `script/`:
`script/build` builds the server binary after the frontend, `script/run` and
`script/clean` came from `backend/script/`, and `make test`, `make lint`,
`make fmt` and `make fmt-check` do what its `test`, `lint`, `fmt` and
`fmt-check` did. `script/bootstrap` no longer installs gcc, which only the
host Go tests needed. The image and the page are unchanged
- 2026-10-07: the files shared from `sneak/prompts` are its copies at commit
`dd4027b` ([#113](https://git.eeqj.de/sneak/netwatch/issues/113)), with this
repository's own entries after the shared content in `.gitignore`,
`.dockerignore` and `.editorconfig`. `make lint` and `make test` each build
one phase of `Dockerfile` without the cache: `lint` runs golangci-lint v2.14.0
over `backend/` and, through the `frontend-lint` stage, eslint; `test` runs
the Go tests on the Debian Go image and, through the `frontend` stage, the
frontend's unit tests and build. The builder stage waits on both, and without
a `VERSION` build argument takes the version from `git describe` on the `.git`
in the build context. Neither linter nor the tests run on the host for
`make check`; `backend/script/lint` runs the root one, and
`backend/.golangci.yml` is no longer checked against a sha256. prettier
formats only the JavaScript, CSS, HTML and Markdown, so the shared
`.golangci.yml` stays as fetched. `script/fmt` and `script/fmt-check` put
`~/.local/bin` on `PATH`, which the shared workflow no longer does.
`script/frontend-lint` and `script/frontend-check` are gone
- 2026-10-07: the six Hetzner targets answer again, and failed checks are
written to the browser console
([#114](https://git.eeqj.de/sneak/netwatch/issues/114)). The Hetzner
speed-test servers close the connection without an answer when the URL has a
query string, and every check added `?_cb=` and the time; checks now fetch
each target's URL as written, with `cache: 'no-store'` as before. Each
recorded check that fails writes one `console.error` line, and the same line
to the debug log, with the target's name and URL, the time, what failed and
how long the request took; a target that answers after failed checks writes
one `console.info` line. Checks the page does not record write none, so the
debug log no longer lists failures in the first round or in the recovery probe
- 2026-10-04: the page's footer no longer says "IPv4 only"
([#111](https://git.eeqj.de/sneak/netwatch/issues/111)): each check is a
`fetch`, the browser picks IPv4 or IPv6 for each WAN host, and the local
targets are IPv4 addresses. The rest of the footer is unchanged
- 2026-10-04: `README.md`, `TODO.md` and `test/viewport/README.md` say what the
tree does (issue #24). The README's Getting Started leads with `make` targets;
a new Backend section says what `netwatch-server` stores, its routes and how
the image builds and runs it, and points to `backend/README.md` for its
settings; the checks are GET requests; the 26 WAN hosts, the four health
states, the summary's figures and the features the list lacked are described
as the page has them; and its TODO section points here, as does the one in
`backend/README.md`, whose open items moved to Future Steps. This file's
Workflow branches from `next` and opens the PR against `next`, Status says
where the repo stands, and Next Step and Future Steps hold only open work,
linked to its issue where one exists. The viewport harness README names Node's
test runner, not `vitest`
- 2026-10-04: in `src/main.js` (issue #102), a target's min, max, median and
average latency come from one list of its answers, through the same function
the summary's figures use, so the median is written once. The latency color
limits are one table in `CONFIG`, read by both the figure's and the
sparkline's color. The health thresholds, the debug log's length, the gateway
check's timeout, the recovery probe's number of hosts and interval, how often
the rows are sorted and the delay before the first sparkline resize are
`CONFIG` entries too. A unit test checks the summary's figures. Nothing the
page does or shows changed; the footer's color legend still writes the limits
out as text
- 2026-10-04: password guesses at `/metrics` are rate limited (issue #104): each
client address, resolved through `TRUSTED_PROXIES` as for reports, may make 60
requests to `/metrics` a minute, counted by `go-chi/httprate` apart from its
reports; past that it gets 429 and its basic auth credentials are not checked.
The limit is a constant in `backend/internal/server/routes.go`. A test uses up
one client's allowance on wrong passwords, gets 429 with the right one, and
checks that another client behind the same nginx still gets in
- 2026-10-04: the backend reports errors to Sentry (issue #95). With
`SENTRY_DSN` set, it sets up `sentry-go` with the release `netwatch-server-`
and its version, reports each panic in a handler through `sentryhttp`, the
last of the middleware every request goes through, which panics again so the
request still gets the 500 from the panic recovery, and waits up to 2 seconds
on shutdown for Sentry to finish sending. A DSN Sentry refuses stops the start
with an error naming `SENTRY_DSN`. With it empty, Sentry is not set up and
nothing is sent to it
- 2026-10-04: a target's name and URL and a debug log message show as the
characters they are and are never read as HTML (issue #29): a host row escapes
the name and URL it writes into its markup, and the debug log sets each line
as text. A unit test checks a target whose name and URL hold `<`, `>`, `"`,
`&` and `'`. `README.md` no longer calls `CONFIG` frozen: the interval menu
sets its `updateInterval`, and the values computed from it follow. `AppState`
declares the recovery probe's two properties, the sparkline axis functions
lose the parameters they did not use, and the comment on a target's history
names both kinds of entry it holds. Nothing the page does changed
- 2026-10-04: a dependency can be added without running yarn or go by hand
(issue #45): `make add-dependency PACKAGE=<name>@<version>` shims to the new
`script/add-dependency`, which runs `yarn add --dev`, so `package.json` and
`yarn.lock` change together, then `yarn install --frozen-lockfile`; the same
command moves a package to another version. `make tidy` shims to the new
`script/tidy`, which runs `go mod tidy` in `backend/`: a Go module is added by
importing it, or moved by editing its `require` line, then `make tidy`.
`script/bootstrap` still installs with `--frozen-lockfile`
- 2026-10-04: the backend serves Prometheus metrics (issue #94). With
`METRICS_USERNAME` and `METRICS_PASSWORD` both set, it records request
duration and response size through `go-http-metrics` and serves them, with
Go's runtime and process metrics, at `GET /metrics` behind basic auth with
those credentials; nginx passes `/metrics` to it as it does `/api/`. With
neither set there are no metrics and `/metrics` is 404; one without the other
stops the start with an error naming both, and so does a `METRICS_USERNAME`
containing `:`, with an error naming it. Only requests that reach the health
check or `POST /api/v1/reports` are recorded, not `/metrics` itself and not
every request as `GO_HTTP_SERVER_CONVENTIONS.md` shows, because the labels are
the request's path and method, which clients can make up without end. For
that, `POST /api/v1/reports` is now registered by its full path instead of
inside a `/api/v1` route group; it answers as before
- 2026-10-04: `script/` and `Makefile` follow the org models (issue #28):
`make dev` shims to the new `script/dev`, the Vite dev server, and the new
`make build` to `script/build`, the frontend production build.
`.prettierignore` no longer leaves out `backend/`, so `make fmt` and
`make fmt-check` cover `backend/README.md`; it leaves out
`backend/.golangci.yml` by name, the org standard file whose sha256
`backend/script/lint` checks. `script/install-precommit` and the date on
`script/bootstrap`'s pins are the org model again; `script/bootstrap`,
`script/fmt` and `script/fmt-check` each say in a comment why they differ from
it
- 2026-10-04: a frontend build on Node 26 or newer, such as `make test` on a
host with Node 26, no longer prints Node's warning that `module.register()` is
deprecated (issue #32); the build in `Dockerfile` runs on Node 22, which never
printed it. The call was in `@tailwindcss/node`, which `@tailwindcss/vite`
brings in at its own exact version; tailwind 4.3.1 calls
`module.registerHooks()` instead where Node has it. `yarn.lock` now has
`@tailwindcss/vite` and `tailwindcss` at 4.3.3, inside the ranges
`package.json` already allowed, and tailwind's own dependencies moved with
them. The built CSS changes only in how it is written out, in tailwind's
Firefox focus-ring rule, which no longer applies to iframes (the page has
none, so nothing on it looks different), and in tailwind's default sans-serif
font list, which the page does not use: `body` sets a monospace font
- 2026-10-03: the frontend's unit tests cover what the page computes (issue
#21): `humanDuration`, the latency colours of a figure and of a sparkline
either side of each boundary, a target's min, max, average and median latency
@@ -478,18 +33,6 @@ Run `make frontend-viewport-test` in CI as its own step; it is not part of
test listed, and then fails. `src/main.js` now exports `humanDuration`,
`HostState`, `latencyClass` and `latencyHex` for the tests; nothing it does
changed
- 2026-10-03: the backend's logs are one stream (issue #27): fx logs its own
steps of starting and stopping through the backend's logger, so off a terminal
every line the backend's own logger and fx write is JSON, where fx used to
write plain text to stderr. A config file that is found but cannot be read now
stops the start with its error, logged as JSON like a bad setting, where it
used to end in a Go panic. A test runs the server as a child process and
checks both. The backend logs its name, version and architecture once at
start. The health check's uptime keys are now `uptime_seconds` and
`uptime_human`; its path, content type, `"status":"ok"` and 200 are unchanged.
`SENTRY_DSN`, `METRICS_USERNAME` and `METRICS_PASSWORD` are still read and
still unused, and left out of `backend/README.md`, until issues #94 and #95
wire them up
- 2026-10-03: the frontend has a real linter (issue #47, and item 2 of issue
#28): `eslint` with its recommended rules, set in `eslint.config.js`, runs in
a new `frontend-lint` stage of `Dockerfile`, which the frontend stage waits
@@ -742,12 +285,12 @@ Run `make frontend-viewport-test` in CI as its own step; it is not part of
# Future Steps
- A backend test that posts a report to `POST /api/v1/reports` and checks the
compressed file it is written to
- A backend route that decompresses the stored reports and answers queries on
them
- Prometheus metrics for the backend's in-memory buffer: its size, the number of
flushes and the number of reports
- A configurable host list (an environment variable or a config file)
- Export of the latency history (CSV or JSON)
- A notification when the health status changes to DEGRADED
- Wire `script/frontend-viewport-test` into CI as its own step (deliberately not
part of `make check` today; the decision has real CI-runtime cost and is
tracked separately)
- Compliance top-up as one small commit: add .editorconfig and add the hooks
target to the Makefile
- After merge, confirm .gitea/workflows/check.yml is on main and CI is green
(main always green policy)
- Decide what to do with untracked resume.sh: commit it, gitignore it, or delete
it
backend/.dockerignore
+2
View File
@@ -0,0 +1,2 @@
node_modules
.DS_Store
backend/.gitignore
+6
View File
@@ -0,0 +1,6 @@
/netwatch-server
*.log
*.out
*.test
.env
data/
.golangci.yml → backend/.golangci.yml
-3
View File
@@ -17,7 +17,6 @@ linters:
disable:
# Genuinely incompatible with project patterns
- exhaustruct # Requires all struct fields
- exhaustruct_v5 # Requires all struct fields (successor to exhaustruct)
- godot # Requires comments to end with periods
- wrapcheck # Too verbose for internal packages
- varnamelen # Short names like db, id are idiomatic Go
@@ -25,8 +24,6 @@ linters:
# silenced by disabling that name, not by enabling the successor.
- wsl # Deprecated, replaced by wsl_v5
- gomodguard # Deprecated, replaced by gomodguard_v2
# Misses findings at random in v2.14.0; back once a pinned release fixes it
- canonicalheader
settings:
lll:
line-length: 88
backend/LICENSE
+21
View File
@@ -0,0 +1,21 @@
MIT License
Copyright (c) 2026 @sneak (https://sneak.berlin)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
backend/Makefile
+30
View File
@@ -0,0 +1,30 @@
# Thin shims; the implementations live in backend/script/ (see the
# Entrypoints section of README.md). There is no check, hooks or docker
# target here: the root Makefile's check covers this directory, its
# hooks target installs the repo's only pre-commit hook, and its docker
# target builds the one image, which contains this backend.
.PHONY: all build test lint fmt fmt-check run clean
all: build
build:
@script/build
test:
@script/test
lint:
@script/lint
fmt:
@script/fmt
fmt-check:
@script/fmt-check
run:
@script/run
clean:
@script/clean
backend/README.md
+191
View File
@@ -0,0 +1,191 @@
netwatch-server is an MIT-licensed Go HTTP backend by
[@sneak](https://sneak.berlin) that receives telemetry reports from the NetWatch
SPA and persists them as zstd-compressed JSONL files on disk.
## Getting Started
From this directory:
```bash
# Build and run locally
make run
```
From the repo root, whose `Dockerfile` builds the one image that ships this
backend behind nginx (see [Container image](#container-image)):
```bash
# Run tests, lint, and format check over the frontend and this backend
make check
# Build the image: nginx, the frontend and this backend
make docker
docker run -p 8080:8080 netwatch
```
## Entrypoints
This directory follows the same
[Scripts to Rule Them All](https://github.com/github/scripts-to-rule-them-all)
pattern as the repo root: the targets in `backend/Makefile` are thin shims over
`backend/script/`. The root `Dockerfile` runs them, and the root scripts call
`test`, `fmt` and `fmt-check`:
- `script/build` — compile the static `netwatch-server` binary with its version
stamped in. The version is `VERSION` from the environment;
when that is unset or empty, it falls back to `git describe` inside a git
checkout, then to `dev`
- `script/test` — run the Go tests with the race detector and coverage. Go's
`-timeout 30s` bounds the tests, not their compile. If they fail, they run
again with `-v` for the details, and the script fails. The race detector needs
a C compiler
- `script/lint` — check `.golangci.yml` against its pinned sha256, then run
golangci-lint. It runs inside the golangci-lint image of the lint stage of
the root `Dockerfile`; from a checkout, run `make lint` at the repo root,
which builds that stage
- `script/fmt` — format the Go sources (writes)
- `script/fmt-check` — check Go formatting (read-only)
- `script/run` — build and run the server locally
- `script/clean` — remove build artifacts
There is no `check`, `hooks` or `docker` target here: the root `make check`
covers this directory, the root `make hooks` installs the repo's only pre-commit
hook, and the root `make docker` builds the image that contains this backend.
## Rationale
The NetWatch frontend collects latency measurements from the browser but has no
way to persist or aggregate them. This backend provides a minimal
`POST /api/v1/reports` endpoint that buffers incoming reports in memory and
flushes them to compressed files on disk for later analysis.
## Design
The server is structured as an `fx`-wired Go application under `cmd/netwatch-server/`.
Internal packages in `internal/` follow standard Go project layout:
- **`config`**: Loads configuration from environment variables and config files
via Viper.
- **`handlers`**: HTTP request handlers for the API (health check, report
ingestion).
- **`reportbuf`**: In-memory buffer that accumulates JSONL report lines and
flushes to zstd-compressed files when the buffer reaches 10 MiB or every 60
seconds.
- **`server`**: Chi-based HTTP server with middleware wiring and route
registration.
- **`healthcheck`**, **`middleware`**, **`logger`**, **`globals`**: Supporting
infrastructure.
### Configuration
| Variable | Default | Description |
| ---------------------- | -------------------- | -------------------------------------------------------------------------------------------------------- |
| `BIND_ADDRESS` | empty | IP address to listen on; empty listens on every interface |
| `PORT` | `8080` | HTTP listen port |
| `DATA_DIR` | `./data/reports` | Directory for compressed reports |
| `DATA_DIR_MAX_BYTES` | `1073741824` (1 GiB) | Most bytes of report files kept in `DATA_DIR`, oldest deleted first; see [Report limits](#report-limits) |
| `DEBUG` | `false` | Enable debug logging |
| `TRUSTED_PROXIES` | loopback + RFC1918 | Comma-separated CIDRs whose `X-Forwarded-For` / `X-Real-IP` headers are trusted for client IP resolution |
| `REPORTS_PER_MINUTE` | `60` | Reports each client address may send a minute; see [Report limits](#report-limits) |
| `CORS_ALLOWED_ORIGINS` | empty | Comma-separated origins whose pages may call the API; see [CORS](#cors) |
`TRUSTED_PROXIES` defaults to `127.0.0.1/32,::1/128,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16`.
The loopback entries cover a reverse proxy on the same host. A request whose
direct peer is outside this set has its forwarded headers ignored, and the
direct peer is logged and rate-limited instead. The container image does not use
this default; see [Container image](#container-image).
A variable set to a value the server cannot use, such as `PORT=abc`,
`DEBUG=maybe` or a `BIND_ADDRESS` that is not an IP address, stops it from
starting, with an error naming the variable. An empty variable counts as unset.
### Container image
The root `Dockerfile` builds one image in which nginx listens on the public port
8080, serves the frontend, and proxies `/api/` and `/.well-known/healthcheck` to
this server. The image's entrypoint, `bin/entrypoint.sh`, starts the server as
user `netwatch` (uid 1000) with `BIND_ADDRESS=127.0.0.1` and `PORT=8081`, so
only nginx reaches it, and with `TRUSTED_PROXIES=127.0.0.1/32`, so it takes the
client address nginx passes on and no other. `DATA_DIR` is `/data/reports`, on
the `/data` volume; before starting the server, the entrypoint creates it and
gives it and `/data` to `netwatch` with `netwatch-server prepare-data-dir`,
which acts on nothing outside `/data`. nginx replaces the security headers
this server sets with those in the root `security-headers.conf`, so those are
what clients of the image see.
The container's own `TRUSTED_PROXIES` goes to nginx instead: IP addresses or
CIDRs, separated by commas, of the reverse proxies in front of the container.
nginx takes the client address from `X-Forwarded-For` only on a request from one
of them. Unset or empty, nginx trusts no proxy, and the client address is the
one each request comes from, so every client behind a proxy shares one rate
limit. An entry that is not an IP address or CIDR, such as a hostname or
`1.2.3`, stops the container at start with an error naming `TRUSTED_PROXIES`:
the entrypoint checks each entry with `netwatch-server check-cidr`, which parses
it as this server parses its own `TRUSTED_PROXIES`.
### Report storage
Reports are written as `reports-<timestamp>-<number>.jsonl.zst` files in
`DATA_DIR`. The timestamp is in UTC to the millisecond, so the names sort by
time. The number starts at 1 when the server starts and goes up by one for each
file the server starts to write, so two files written in the same millisecond
still get different names. A failed write uses up its number and leaves a gap in
the numbers: its file, if it was created, is removed. The file stays, counted
toward `DATA_DIR_MAX_BYTES` from the next start, only if removing it fails too.
Each file contains one JSON object per line, compressed with zstd. Files are
created with `O_EXCL` to prevent overwrites.
### Report limits
`POST /api/v1/reports` takes reports from anyone who can reach it, without
credentials, so it is bounded instead. Both refusals below answer with the same
`{"status":"error"}` body as any other error.
- **Rate limit.** Each client address, resolved through `TRUSTED_PROXIES`, may
send `REPORTS_PER_MINUTE` reports a minute; past that it gets 429 with
`Retry-After: 60`. The minute slides: reports from the minute before still
count, fading out over the current one, so an address is sure never to be
refused only while it sends at most half of `REPORTS_PER_MINUTE` in any 60
seconds. The page sends one report a minute from each open tab, so the default
of 60 refuses nothing from up to 30 tabs behind one address, such as a
household or an office sharing it, however their reports bunch up. Report
responses also carry `X-RateLimit-Limit`, `X-RateLimit-Remaining` and
`X-RateLimit-Reset` headers.
- **Size cap.** The report files in `DATA_DIR` may total at most
`DATA_DIR_MAX_BYTES`, counting the files already there at start. Reports
waiting in memory count at their uncompressed size until they are written;
those lost to a failed write stop counting, and the part of its file written
is removed. When a report would take the total past the cap, the oldest report
files are deleted to make room, and each deletion is logged with the file's
name and size; a file still being written is never deleted. A report is
refused with 507, and nothing of it is stored, only when the reports waiting
to be written fill the cap on their own, and then no file is deleted. At
start, report files past the cap, as after lowering it, are deleted the same
way. So the cap is how much of the newest reports is kept: the default of 1
GiB is small enough for any host; set it to the space you can give
`DATA_DIR`.
### CORS
The page calls the API from the origin it is served from, so by default the
server sends no CORS headers, and browsers let no other origin's pages call it.
To serve the page from elsewhere, list that origin in `CORS_ALLOWED_ORIGINS`
(for example `https://netwatch.example.com`); pages from a listed origin may
`GET` and `POST` with a `Content-Type` header. Each entry must be a plain
origin, `scheme://host` with an optional `:port`, as browsers send it: no path,
not even a trailing `/`, and no `*`. Any other entry stops the server from
starting, with an error naming `CORS_ALLOWED_ORIGINS`.
## TODO
- Add integration test that POSTs a report and verifies the compressed output
- Add report decompression/query endpoint
- Add metrics (Prometheus) for buffer size, flush count, report count
## License
MIT. See [LICENSE](LICENSE).
## Author
[@sneak](https://sneak.berlin)
backend/cmd/netwatch-server/main.go
+77
View File
@@ -0,0 +1,77 @@
// Package main is the entry point for netwatch-server.
package main
import (
"fmt"
"os"
"os/user"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/handlers"
"sneak.berlin/go/netwatch/internal/healthcheck"
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/middleware"
"sneak.berlin/go/netwatch/internal/reportbuf"
"sneak.berlin/go/netwatch/internal/server"
"go.uber.org/fx"
)
//nolint:gochecknoglobals // set via ldflags at build time
var (
Appname = "netwatch-server"
Version string
)
func main() {
// "netwatch-server check-cidr CIDR" exits 1, with the error, if
// this server would refuse CIDR in its TRUSTED_PROXIES.
// bin/entrypoint.sh runs it on each entry it gives nginx.
if len(os.Args) == 3 && os.Args[1] == "check-cidr" {
_, err := middleware.ParseTrustedProxies(os.Args[2:])
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
return
}
// "netwatch-server prepare-data-dir DATA_DIR" gets DATA_DIR ready
// for the netwatch user, or exits 1 with the error; see
// reportbuf.PrepareDataDir. bin/entrypoint.sh runs it as root
// before it starts this server as that user.
if len(os.Args) == 3 && os.Args[1] == "prepare-data-dir" {
netwatch, err := user.Lookup("netwatch")
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
err = reportbuf.PrepareDataDir("/data", os.Args[2], netwatch)
if err != nil {
fmt.Fprintf(os.Stderr, "DATA_DIR '%s': %v\n", os.Args[2], err)
os.Exit(1)
}
return
}
globals.Appname = Appname
globals.Version = Version
fx.New(
fx.Provide(
config.New,
globals.New,
handlers.New,
healthcheck.New,
logger.New,
middleware.New,
reportbuf.New,
server.New,
),
fx.Invoke(func(*server.Server) {}),
).Run()
}
go.mod → backend/go.mod
+3 -17
View File
@@ -2,35 +2,21 @@ module sneak.berlin/go/netwatch
go 1.25.5
// npm packages can ship .go files, which ./... and all would include.
ignore ./node_modules
require (
github.com/99designs/basicauth-go v0.0.0-20230316000542-bf6f9cbbf0f8
github.com/getsentry/sentry-go v0.49.0
github.com/go-chi/chi/v5 v5.2.5
github.com/go-chi/cors v1.2.2
github.com/go-chi/httprate v0.16.0
github.com/joho/godotenv v1.5.1
github.com/klauspost/compress v1.19.1
github.com/prometheus/client_golang v1.24.1
github.com/slok/go-http-metrics v0.13.0
github.com/klauspost/compress v1.18.4
github.com/spf13/viper v1.21.0
go.uber.org/fx v1.24.0
golang.org/x/sys v0.47.0
)
require (
github.com/beorn7/perks v1.0.1 // indirect
github.com/cespare/xxhash/v2 v2.3.0 // indirect
github.com/fsnotify/fsnotify v1.9.0 // indirect
github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
github.com/klauspost/cpuid/v2 v2.2.10 // indirect
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
github.com/pelletier/go-toml/v2 v2.2.4 // indirect
github.com/prometheus/client_model v0.6.2 // indirect
github.com/prometheus/common v0.70.1 // indirect
github.com/prometheus/procfs v0.21.1 // indirect
github.com/sagikazarmark/locafero v0.11.0 // indirect
github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
github.com/spf13/afero v1.15.0 // indirect
@@ -42,6 +28,6 @@ require (
go.uber.org/multierr v1.10.0 // indirect
go.uber.org/zap v1.26.0 // indirect
go.yaml.in/yaml/v3 v3.0.4 // indirect
golang.org/x/text v0.40.0 // indirect
google.golang.org/protobuf v1.36.11 // indirect
golang.org/x/sys v0.30.0 // indirect
golang.org/x/text v0.28.0 // indirect
)
backend/go.sum
+73
View File
@@ -0,0 +1,73 @@
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
github.com/go-chi/chi/v5 v5.2.5 h1:Eg4myHZBjyvJmAFjFvWgrqDTXFyOzjj7YIm3L3mu6Ug=
github.com/go-chi/chi/v5 v5.2.5/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
github.com/go-chi/cors v1.2.2 h1:Jmey33TE+b+rB7fT8MUy1u0I4L+NARQlK6LhzKPSyQE=
github.com/go-chi/cors v1.2.2/go.mod h1:sSbTewc+6wYHBBCW7ytsFSn836hqM7JxpglAy2Vzc58=
github.com/go-chi/httprate v0.16.0 h1:8V5DH9j6pSK6UQoBsTpvMyFxycqaKEIToyPKzHJjUa8=
github.com/go-chi/httprate v0.16.0/go.mod h1:A8lo+qRhk+s9LiuP5saS7XCGDXRXMcrueq0NfIuCa/I=
github.com/go-viper/mapstructure/v2 v2.4.0 h1:EBsztssimR/CONLSZZ04E8qAkxNYq4Qp9LvH92wZUgs=
github.com/go-viper/mapstructure/v2 v2.4.0/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
github.com/klauspost/compress v1.18.4 h1:RPhnKRAQ4Fh8zU2FY/6ZFDwTVTxgJ/EMydqSTzE9a2c=
github.com/klauspost/compress v1.18.4/go.mod h1:R0h/fSBs8DE4ENlcrlib3PsXS61voFxhIs2DeRhCvJ4=
github.com/klauspost/cpuid/v2 v2.2.10 h1:tBs3QSyvjDyFTq3uoc/9xFpCuOsJQFNPiAhYdw2skhE=
github.com/klauspost/cpuid/v2 v2.2.10/go.mod h1:hqwkgyIinND0mEev00jJYCxPNVRVXFQeu1XKlok6oO0=
github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0t5Ec4=
github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
github.com/sagikazarmark/locafero v0.11.0 h1:1iurJgmM9G3PA/I+wWYIOw/5SyBtxapeHDcg+AAIFXc=
github.com/sagikazarmark/locafero v0.11.0/go.mod h1:nVIGvgyzw595SUSUE6tvCp3YYTeHs15MvlmU87WwIik=
github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 h1:+jumHNA0Wrelhe64i8F6HNlS8pkoyMv5sreGx2Ry5Rw=
github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8/go.mod h1:3n1Cwaq1E1/1lhQhtRK2ts/ZwZEhjcQeJQ1RuC6Q/8U=
github.com/spf13/afero v1.15.0 h1:b/YBCLWAJdFWJTN9cLhiXXcD7mzKn9Dm86dNnfyQw1I=
github.com/spf13/afero v1.15.0/go.mod h1:NC2ByUVxtQs4b3sIUphxK0NioZnmxgyCrfzeuq8lxMg=
github.com/spf13/cast v1.10.0 h1:h2x0u2shc1QuLHfxi+cTJvs30+ZAHOGRic8uyGTDWxY=
github.com/spf13/cast v1.10.0/go.mod h1:jNfB8QC9IA6ZuY2ZjDp0KtFO2LZZlg4S/7bzP6qqeHo=
github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
github.com/spf13/viper v1.21.0 h1:x5S+0EU27Lbphp4UKm1C+1oQO+rKx36vfCoaVebLFSU=
github.com/spf13/viper v1.21.0/go.mod h1:P0lhsswPGWD/1lZJ9ny3fYnVqxiegrlNrEmgLjbTCAY=
github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
github.com/zeebo/assert v1.3.0 h1:g7C04CbJuIDKNPFHmsk4hwZDO5O+kntRxzaUoNXj+IQ=
github.com/zeebo/assert v1.3.0/go.mod h1:Pq9JiuJQpG8JLJdtkwrJESF0Foym2/D9XMU5ciN/wJ0=
github.com/zeebo/xxh3 v1.0.2 h1:xZmwmqxHZA8AI603jOQ0tMqmBr9lPeFwGg6d+xy9DC0=
github.com/zeebo/xxh3 v1.0.2/go.mod h1:5NWz9Sef7zIDm2JHfFlcQvNekmcEl9ekUZQQKCYaDcA=
go.uber.org/dig v1.19.0 h1:BACLhebsYdpQ7IROQ1AGPjrXcP5dF80U3gKoFzbaq/4=
go.uber.org/dig v1.19.0/go.mod h1:Us0rSJiThwCv2GteUN0Q7OKvU7n5J4dxZ9JKUXozFdE=
go.uber.org/fx v1.24.0 h1:wE8mruvpg2kiiL1Vqd0CC+tr0/24XIB10Iwp2lLWzkg=
go.uber.org/fx v1.24.0/go.mod h1:AmDeGyS+ZARGKM4tlH4FY2Jr63VjbEDJHtqXTGP5hbo=
go.uber.org/goleak v1.2.0 h1:xqgm/S+aQvhWFTtR0XK3Jvg7z8kGV8P4X14IzwN3Eqk=
go.uber.org/goleak v1.2.0/go.mod h1:XJYK+MuIchqpmGmUSAzotztawfKvYLUIgg7guXrwVUo=
go.uber.org/multierr v1.10.0 h1:S0h4aNzvfcFsC3dRF1jLoaov7oRaKqRGC/pUEJ2yvPQ=
go.uber.org/multierr v1.10.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
go.uber.org/zap v1.26.0 h1:sI7k6L95XOKS281NhVKOFCUNIvv9e0w4BF8N3u+tCRo=
go.uber.org/zap v1.26.0/go.mod h1:dtElttAiwGvoJ/vj4IwHBS/gXsEu/pZ50mUIRWuG0so=
go.yaml.in/yaml/v3 v3.0.4 h1:tfq32ie2Jv2UxXFdLJdh3jXuOzWiL1fo0bu/FbuKpbc=
go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
internal/config/config.go → backend/internal/config/config.go
+21 -47
View File
@@ -9,7 +9,6 @@ import (
"math"
"net/netip"
"net/url"
"os"
"strconv"
"strings"
@@ -22,14 +21,16 @@ import (
)
// defaultTrustedProxies lists the networks whose forwarded
// headers are honoured when TRUSTED_PROXIES is unset: the
// RFC 1918 ranges. The container image does not use it:
// headers are honoured by default: IPv4 and IPv6 loopback,
// for a reverse proxy on the same host, and the RFC1918
// ranges. The container image does not use it:
// bin/entrypoint.sh gives the server 127.0.0.1/32, since
// nginx is its only client there.
const defaultTrustedProxies = "10.0.0.0/8,172.16.0.0/12,192.168.0.0/16"
const defaultTrustedProxies = "127.0.0.1/32,::1/128," +
"10.0.0.0/8,172.16.0.0/12,192.168.0.0/16"
// Default limits on stored reports; README.md gives the reasons for
// these values.
// Default limits on stored reports; backend/README.md gives the
// reasons for these values.
const (
defaultReportsPerMinute = 60
defaultDataDirMaxBytes = 1 << 30 // 1 GiB
@@ -41,16 +42,8 @@ var (
"must be an origin, scheme://host with an optional port",
)
errNotPort = errors.New("must be a port number, 1 to 65535")
errNotBool = errors.New("must be true or false")
errNotIP = errors.New("must be an IP address, or empty")
errMetricsCredentials = errors.New(
"METRICS_USERNAME and METRICS_PASSWORD must be set together, " +
"or neither",
)
errMetricsUsernameColon = errors.New(
"METRICS_USERNAME must not contain \":\", " +
"which basic auth cannot carry in a user name",
)
)
// Params defines the dependencies for Config.
@@ -80,8 +73,7 @@ type Config struct {
// New loads configuration from env, .env files, and config
// files, returning a fully resolved Config. It fails, with an error
// naming the setting, on a value the server cannot use, and on a
// config file it finds but cannot read.
// naming the setting, on a value the server cannot use.
func New(
_ fx.Lifecycle,
params Params,
@@ -100,7 +92,7 @@ func New(
viper.SetDefault("CORS_ALLOWED_ORIGINS", "")
viper.SetDefault("DATA_DIR", "./data/reports")
viper.SetDefault("DATA_DIR_MAX_BYTES", defaultDataDirMaxBytes)
viper.SetDefault("DEBUG", "")
viper.SetDefault("DEBUG", "false")
// An empty BIND_ADDRESS listens on every interface.
viper.SetDefault("BIND_ADDRESS", "")
viper.SetDefault("PORT", "8080")
@@ -114,29 +106,23 @@ func New(
if err != nil {
var notFound viper.ConfigFileNotFoundError
if !errors.As(err, &notFound) {
return nil, fmt.Errorf("config file %s: %w",
viper.ConfigFileUsed(), err)
log.Error("config file malformed", "error", err)
panic(err)
}
}
// Read with strconv: viper's GetInt would read a value it cannot
// parse as 0 instead of failing.
// Read with strconv: viper's GetInt and GetBool would read a value
// they cannot parse as 0 or false instead of failing.
port, err := strconv.Atoi(viper.GetString("PORT"))
if err != nil || port < 1 || port > math.MaxUint16 {
return nil, fmt.Errorf("PORT %q: %w",
viper.GetString("PORT"), errNotPort)
}
// Any non-empty value turns debug logging on, "false" and "0"
// included, as the code style guide says.
debug := viper.GetString("DEBUG") != ""
// An empty TRUSTED_PROXIES trusts no proxy, but viper reads an
// empty environment variable as unset and would give the default,
// so the environment is read first.
trustedProxies, set := os.LookupEnv("TRUSTED_PROXIES")
if !set {
trustedProxies = viper.GetString("TRUSTED_PROXIES")
debug, err := strconv.ParseBool(viper.GetString("DEBUG"))
if err != nil {
return nil, fmt.Errorf("DEBUG %q: %w",
viper.GetString("DEBUG"), errNotBool)
}
s := &Config{
@@ -150,7 +136,7 @@ func New(
Port: port,
ReportsPerMinute: viper.GetInt("REPORTS_PER_MINUTE"),
SentryDSN: viper.GetString("SENTRY_DSN"),
TrustedProxies: splitList(trustedProxies),
TrustedProxies: splitList(viper.GetString("TRUSTED_PROXIES")),
log: log,
params: &params,
}
@@ -169,8 +155,8 @@ func New(
}
// check fails with an error naming the first setting here whose value
// the server cannot use. New checks PORT as it reads it, and the
// middleware checks TRUSTED_PROXIES as it parses it.
// the server cannot use. New checks PORT and DEBUG as it reads them,
// and the middleware checks TRUSTED_PROXIES as it parses it.
func (s *Config) check() error {
// viper reads a value that is not a number as 0, so this also
// catches a mistyped setting.
@@ -191,18 +177,6 @@ func (s *Config) check() error {
}
}
// The server records and serves metrics only with both set, so
// one alone is a mistake that would otherwise go unnoticed.
if (s.MetricsUsername == "") != (s.MetricsPassword == "") {
return errMetricsCredentials
}
// Basic auth splits the credentials at the first ":", so with one
// in the user name every request to /metrics would get 401.
if strings.Contains(s.MetricsUsername, ":") {
return errMetricsUsernameColon
}
return checkOrigins(s.CORSAllowedOrigins)
}
backend/internal/config/config_test.go
+121
View File
@@ -0,0 +1,121 @@
package config_test
import (
"strings"
"testing"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/logger"
"go.uber.org/fx"
)
// requireConfigError builds the config as main does and fails the
// test unless that fails with an error naming setting. It uses
// fx.New, because fxtest.New fails the test itself on an error.
func requireConfigError(t *testing.T, setting string) {
t.Helper()
app := fx.New(
fx.NopLogger,
fx.Provide(globals.New, logger.New, config.New),
fx.Invoke(func(*config.Config) {}),
)
err := app.Err()
if err == nil || !strings.Contains(err.Error(), setting) {
t.Fatalf("config error = %v, want one naming %s", err, setting)
}
}
// TestSettingsLoadAsGiven: valid values pass the checks and are used
// as given. bin/entrypoint.sh starts the server with these
// BIND_ADDRESS and PORT values.
func TestSettingsLoadAsGiven(t *testing.T) {
t.Setenv("BIND_ADDRESS", "127.0.0.1")
t.Setenv("PORT", "8081")
t.Setenv("DEBUG", "true")
var cfg *config.Config
app := fx.New(
fx.NopLogger,
fx.Provide(globals.New, logger.New, config.New),
fx.Populate(&cfg),
)
err := app.Err()
if err != nil {
t.Fatalf("config error = %v", err)
}
if cfg.BindAddress != "127.0.0.1" || cfg.Port != 8081 || !cfg.Debug {
t.Fatalf("BindAddress, Port, Debug = %q, %d, %t; "+
"want \"127.0.0.1\", 8081, true",
cfg.BindAddress, cfg.Port, cfg.Debug)
}
}
// TestPortMustBeAPortNumber: viper reads a value that is not a number
// as 0, on which the server would listen on a random port.
func TestPortMustBeAPortNumber(t *testing.T) {
for _, value := range []string{"abc", "0", "65536", "8080.5"} {
t.Run(value, func(t *testing.T) {
t.Setenv("PORT", value)
requireConfigError(t, "PORT")
})
}
}
// TestDebugMustBeTrueOrFalse: viper reads any other value, such as
// "yes", as false.
func TestDebugMustBeTrueOrFalse(t *testing.T) {
t.Setenv("DEBUG", "yes")
requireConfigError(t, "DEBUG")
}
// TestBindAddressMustBeAnIPAddress: a host name would be looked up
// only once the server starts listening, and a mistyped one would stop
// it then with an error that does not name the setting.
func TestBindAddressMustBeAnIPAddress(t *testing.T) {
t.Setenv("BIND_ADDRESS", "localhost")
requireConfigError(t, "BIND_ADDRESS")
}
// TestReportsPerMinuteMustBePositive: unchecked, zero would panic
// when the routes are built, and a negative rate would lift the
// limit.
func TestReportsPerMinuteMustBePositive(t *testing.T) {
t.Setenv("REPORTS_PER_MINUTE", "0")
requireConfigError(t, "REPORTS_PER_MINUTE")
}
// TestDataDirMaxBytesMustBeANumber: viper reads a value that is not
// a number, such as "1GB", as 0, which would refuse every report.
func TestDataDirMaxBytesMustBeANumber(t *testing.T) {
t.Setenv("DATA_DIR_MAX_BYTES", "1GB")
requireConfigError(t, "DATA_DIR_MAX_BYTES")
}
// TestCORSAllowedOriginsMustBeOrigins: "*" would let every origin in,
// and an entry that is not a plain origin would match no page.
func TestCORSAllowedOriginsMustBeOrigins(t *testing.T) {
for _, entry := range []string{
"*",
"https://*.netwatch.example",
"netwatch.example",
"https://netwatch.example/",
} {
t.Run(entry, func(t *testing.T) {
t.Setenv("CORS_ALLOWED_ORIGINS", entry)
requireConfigError(t, "CORS_ALLOWED_ORIGINS")
})
}
}
internal/globals/globals.go → backend/internal/globals/globals.go
+1 -1
View File
@@ -4,7 +4,7 @@ package globals
import "go.uber.org/fx"
//nolint:gochecknoglobals // set by cli.RunServer before fx starts
//nolint:gochecknoglobals // set from main before fx starts
var (
// Appname is the application name.
Appname string
internal/handlers/export_test.go → backend/internal/handlers/export_test.go
View File
internal/handlers/handlers.go → backend/internal/handlers/handlers.go
+4 -21
View File
@@ -5,9 +5,7 @@ package handlers
import (
"context"
"encoding/json"
"errors"
"log/slog"
"mime"
"net/http"
"sneak.berlin/go/netwatch/internal/globals"
@@ -20,10 +18,6 @@ import (
const jsonContentType = "application/json; charset=utf-8"
// errNotJSON is what decodeJSON returns for a request whose
// Content-Type is not application/json.
var errNotJSON = errors.New("content type is not application/json")
// reportAppender is the subset of the report buffer the handlers
// depend on. Defining it here keeps the storage failure path
// exercisable with a stub in tests.
@@ -86,25 +80,14 @@ func (s *Handlers) respondJSON(
}
}
// decodeJSON decodes the request body into v. It returns errNotJSON,
// reading nothing, unless the request's Content-Type is
// application/json, with or without parameters such as charset. The
// body is expected to already be bounded by the body-size middleware,
// so a caller can distinguish an over-limit body from malformed JSON
// by testing the returned error for *http.MaxBytesError.
// decodeJSON decodes the request body into v. The body is
// expected to already be bounded by the body-size middleware, so
// a caller can distinguish an over-limit body from malformed
// JSON by testing the returned error for *http.MaxBytesError.
func (s *Handlers) decodeJSON(
_ http.ResponseWriter,
r *http.Request,
v any,
) error {
// A page on another origin can POST text/plain or a form without
// a CORS preflight, so its visitors' browsers would send it
// whatever the CORS settings. A JSON POST waits for the
// preflight, so only JSON is taken.
mediaType, _, err := mime.ParseMediaType(r.Header.Get("Content-Type"))
if err != nil || mediaType != "application/json" {
return errNotJSON
}
return json.NewDecoder(r.Body).Decode(v)
}
backend/internal/handlers/healthcheck.go
+11
View File
@@ -0,0 +1,11 @@
package handlers
import "net/http"
// HandleHealthCheck returns a handler for the health check
// endpoint.
func (s *Handlers) HandleHealthCheck() http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
s.respondJSON(w, r, s.hc.Check(), http.StatusOK)
}
}
internal/handlers/healthcheck_test.go → backend/internal/handlers/healthcheck_test.go
+15 -28
View File
@@ -9,19 +9,17 @@ import (
"testing"
"time"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/handlers"
"sneak.berlin/go/netwatch/internal/healthcheck"
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/reportbuf"
"go.uber.org/fx/fxtest"
)
// newStartedHandlers builds Handlers with a real health check for the
// server named in g, and a report buffer in a temporary directory, and
// starts them, which records the time the uptime counts from.
// server named in g, and starts them, which records the time the
// uptime counts from.
func newStartedHandlers(t *testing.T, g *globals.Globals) *handlers.Handlers {
t.Helper()
@@ -32,23 +30,14 @@ func newStartedHandlers(t *testing.T, g *globals.Globals) *handlers.Handlers {
t.Fatalf("logger: %v", err)
}
buf, err := reportbuf.New(lc, reportbuf.Params{
Config: &config.Config{DataDir: t.TempDir(), DataDirMaxBytes: 1 << 20},
Logger: log,
})
if err != nil {
t.Fatalf("report buffer: %v", err)
}
hc, err := healthcheck.New(lc,
healthcheck.Params{Buffer: buf, Globals: g, Logger: log})
healthcheck.Params{Globals: g, Logger: log})
if err != nil {
t.Fatalf("health check: %v", err)
}
h, err := handlers.New(lc, handlers.Params{
Buffer: buf, Globals: g, Healthcheck: hc, Logger: log,
})
h, err := handlers.New(lc,
handlers.Params{Globals: g, Healthcheck: hc, Logger: log})
if err != nil {
t.Fatalf("handlers: %v", err)
}
@@ -59,12 +48,10 @@ func newStartedHandlers(t *testing.T, g *globals.Globals) *handlers.Handlers {
return h
}
// TestHandleHealthCheck checks the health check's answer at start, when
// no write of a report file has failed: 200, a JSON content type, and a
// JSON object with exactly the fields of healthcheck.HealthcheckResponse,
// carrying "status":"ok", this server's name and version and an uptime
// counted from its start. The answer while writes fail is checked in
// internal/reportbuf, whose tests can make a write fail.
// TestHandleHealthCheck checks the health check's answer: 200, a JSON
// content type, and a JSON object with exactly the fields of
// healthcheck.Response, carrying this server's name and version and
// an uptime counted from its start.
func TestHandleHealthCheck(t *testing.T) {
t.Parallel()
@@ -95,7 +82,7 @@ func TestHandleHealthCheck(t *testing.T) {
}
fields := []string{
"appname", "now", "status", "uptime_human", "uptime_seconds", "version",
"appname", "now", "status", "uptimeHuman", "uptimeSeconds", "version",
}
if got := slices.Sorted(maps.Keys(body)); !slices.Equal(got, fields) {
t.Fatalf("fields = %v, want %v", got, fields)
@@ -117,17 +104,17 @@ func TestHandleHealthCheck(t *testing.T) {
}
// Started just now, so the uptime is well under a minute.
human, _ := body["uptime_human"].(string)
human, _ := body["uptimeHuman"].(string)
uptime, err := time.ParseDuration(human)
if err != nil || uptime > time.Minute {
t.Errorf("uptime_human = %q, want a duration under a minute (%v)",
t.Errorf("uptimeHuman = %q, want a duration under a minute (%v)",
human, err)
}
seconds, ok := body["uptime_seconds"].(float64)
seconds, ok := body["uptimeSeconds"].(float64)
if !ok || seconds < 0 || seconds > time.Minute.Seconds() {
t.Errorf("uptime_seconds = %v, want a number of seconds under a minute",
body["uptime_seconds"])
t.Errorf("uptimeSeconds = %v, want a number of seconds under a minute",
body["uptimeSeconds"])
}
}
internal/handlers/report.go → backend/internal/handlers/report.go
+4 -10
View File
@@ -30,7 +30,7 @@ type report struct {
}
// HandleReport returns a handler that accepts telemetry
// reports from NetWatch clients, sent as application/json.
// reports from NetWatch clients.
func (s *Handlers) HandleReport() http.HandlerFunc {
type response struct {
Status string `json:"status"`
@@ -66,15 +66,9 @@ func (s *Handlers) HandleReport() http.HandlerFunc {
}
// decodeErrorStatus logs a report decode failure and returns the
// status to send: 415 when the report was not sent as JSON, 413 when
// the body exceeded the size limit, otherwise 400 for malformed JSON.
// status to send: 413 when the body exceeded the size limit,
// otherwise 400 for malformed JSON.
func (s *Handlers) decodeErrorStatus(err error) int {
if errors.Is(err, errNotJSON) {
s.log.Warn("report refused: Content-Type is not application/json")
return http.StatusUnsupportedMediaType
}
var tooLarge *http.MaxBytesError
if errors.As(err, &tooLarge) {
s.log.Warn("report body too large", "limit_bytes", tooLarge.Limit)
@@ -93,7 +87,7 @@ func (s *Handlers) decodeErrorStatus(err error) int {
// appendErrorStatus logs a failure to store a report and returns
// the status to send: 507 when the reports waiting to be written fill
// the size cap, otherwise 500, as when report files cannot be written.
// the size cap, otherwise 500.
func (s *Handlers) appendErrorStatus(err error) int {
if errors.Is(err, reportbuf.ErrFull) {
s.log.Warn("report refused: " +
internal/handlers/report_test.go → backend/internal/handlers/report_test.go
-103
View File
@@ -27,17 +27,6 @@ type stubAppender struct {
func (s stubAppender) Append(any) error { return s.err }
// recordingAppender keeps every report the handler stores.
type recordingAppender struct {
reports []any
}
func (a *recordingAppender) Append(v any) error {
a.reports = append(a.reports, v)
return nil
}
func newTestHandlers(buf stubAppender, out io.Writer) *handlers.Handlers {
return handlers.NewForTest(buf, slog.New(slog.NewJSONHandler(out, nil)))
}
@@ -94,7 +83,6 @@ func TestHandleReportAcceptsValidReports(t *testing.T) {
http.MethodPost, "/api/v1/reports",
strings.NewReader(tt.body),
)
req.Header.Set("Content-Type", "application/json")
h.HandleReport().ServeHTTP(rec, req)
@@ -115,89 +103,6 @@ func TestHandleReportAcceptsValidReports(t *testing.T) {
}
}
// TestHandleReportStoresOnlyJSON checks that a report is stored only
// when sent as application/json, as the page sends it. One sent as
// text/plain or as a form, which a page on another origin can send
// without a CORS preflight, is refused with 415.
func TestHandleReportStoresOnlyJSON(t *testing.T) {
t.Parallel()
tests := []struct {
name string
contentType string
wantStatus int
wantStored int
}{
{
name: "text/plain",
contentType: "text/plain;charset=UTF-8",
wantStatus: http.StatusUnsupportedMediaType,
wantStored: 0,
},
{
name: "a urlencoded form",
contentType: "application/x-www-form-urlencoded",
wantStatus: http.StatusUnsupportedMediaType,
wantStored: 0,
},
{
name: "a multipart form",
contentType: "multipart/form-data; boundary=x",
wantStatus: http.StatusUnsupportedMediaType,
wantStored: 0,
},
{
name: "no Content-Type",
contentType: "",
wantStatus: http.StatusUnsupportedMediaType,
wantStored: 0,
},
{
name: "application/json",
contentType: "application/json",
wantStatus: http.StatusOK,
wantStored: 1,
},
{
name: "application/json with a charset",
contentType: "application/json;charset=UTF-8",
wantStatus: http.StatusOK,
wantStored: 1,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
t.Parallel()
var stored recordingAppender
h := handlers.NewForTest(&stored, slog.New(slog.DiscardHandler))
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodPost, "/api/v1/reports",
strings.NewReader(`{"clientId":"c1","hosts":[]}`),
)
if tt.contentType != "" {
req.Header.Set("Content-Type", tt.contentType)
}
h.HandleReport().ServeHTTP(rec, req)
if rec.Code != tt.wantStatus {
t.Errorf("status = %d, want %d", rec.Code, tt.wantStatus)
}
if len(stored.reports) != tt.wantStored {
t.Errorf("reports stored = %d, want %d",
len(stored.reports), tt.wantStored)
}
})
}
}
func TestHandleReportStorageFailureIsNon2xx(t *testing.T) {
t.Parallel()
@@ -208,7 +113,6 @@ func TestHandleReportStorageFailureIsNon2xx(t *testing.T) {
http.MethodPost, "/api/v1/reports",
strings.NewReader(`{"clientId":"c1","hosts":[]}`),
)
req.Header.Set("Content-Type", "application/json")
h.HandleReport().ServeHTTP(rec, req)
@@ -234,7 +138,6 @@ func TestHandleReportFullIs507(t *testing.T) {
http.MethodPost, "/api/v1/reports",
strings.NewReader(`{"clientId":"c1","hosts":[]}`),
)
req.Header.Set("Content-Type", "application/json")
h.HandleReport().ServeHTTP(rec, req)
@@ -258,7 +161,6 @@ func TestHandleReportMalformedJSONIs400(t *testing.T) {
http.MethodPost, "/api/v1/reports",
strings.NewReader(`{not json`),
)
req.Header.Set("Content-Type", "application/json")
h.HandleReport().ServeHTTP(rec, req)
@@ -283,8 +185,6 @@ func TestHandleReportOversizeIs413(t *testing.T) {
http.MethodPost, "/api/v1/reports",
strings.NewReader(`{"clientId":"`+strings.Repeat("x", 200)+`"}`),
)
req.Header.Set("Content-Type", "application/json")
// No declared length, so only the middleware's read cap can
// stop this body.
req.ContentLength = -1
@@ -313,7 +213,6 @@ func TestHandleReportDoesNotLogRawGeo(t *testing.T) {
`{"clientId":"c1","geo":{"raw":"`+sentinel+`"},"hosts":[]}`,
),
)
req.Header.Set("Content-Type", "application/json")
h.HandleReport().ServeHTTP(rec, req)
@@ -346,7 +245,6 @@ func TestHandleReportLogsClientIDCutToBound(t *testing.T) {
`{"clientId":"`+long+`","timestamp":"`+long+`","hosts":[]}`,
),
)
req.Header.Set("Content-Type", "application/json")
h.HandleReport().ServeHTTP(rec, req)
@@ -386,7 +284,6 @@ func TestHandleReportDecodeErrorLogIsBounded(t *testing.T) {
http.MethodPost, "/api/v1/reports",
strings.NewReader(`{"hosts":[{"history":[{"t":`+huge+`}]}]}`),
)
req.Header.Set("Content-Type", "application/json")
h.HandleReport().ServeHTTP(rec, req)
internal/healthcheck/healthcheck.go → backend/internal/healthcheck/healthcheck.go
+9 -20
View File
@@ -10,7 +10,6 @@ import (
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/reportbuf"
"go.uber.org/fx"
)
@@ -19,7 +18,6 @@ import (
type Params struct {
fx.In
Buffer *reportbuf.Buffer
Config *config.Config
Globals *globals.Globals
Logger *logger.Logger
@@ -32,17 +30,14 @@ type Healthcheck struct {
params *Params
}
// HealthcheckResponse is the JSON payload returned by the health
// check endpoint. Its name and its snake_case keys are the ones
// GO_HTTP_SERVER_CONVENTIONS.md gives.
//
//nolint:revive,tagliatelle // name and keys from the conventions
type HealthcheckResponse struct {
// Response is the JSON payload returned by the health check
// endpoint.
type Response struct {
Appname string `json:"appname"`
Now string `json:"now"`
Status string `json:"status"`
UptimeHuman string `json:"uptime_human"`
UptimeSeconds int64 `json:"uptime_seconds"`
UptimeHuman string `json:"uptimeHuman"`
UptimeSeconds int64 `json:"uptimeSeconds"`
Version string `json:"version"`
}
@@ -70,18 +65,12 @@ func New(
return s, nil
}
// Healthcheck returns the current health status of the application:
// "ok", or "error" while report files cannot be written.
func (s *Healthcheck) Healthcheck() *HealthcheckResponse {
status := "ok"
if s.params.Buffer.LastWriteFailed() {
status = "error"
}
return &HealthcheckResponse{
// Check returns the current health status of the application.
func (s *Healthcheck) Check() *Response {
return &Response{
Appname: s.params.Globals.Appname,
Now: time.Now().UTC().Format(time.RFC3339Nano),
Status: status,
Status: "ok",
UptimeHuman: s.uptime().String(),
UptimeSeconds: int64(s.uptime().Seconds()),
Version: s.params.Globals.Version,
internal/logger/logger.go → backend/internal/logger/logger.go
View File
internal/middleware/export_test.go → backend/internal/middleware/export_test.go
View File
internal/middleware/middleware.go → backend/internal/middleware/middleware.go
+15 -112
View File
@@ -11,7 +11,6 @@ import (
"net/http"
"net/netip"
"runtime/debug"
"slices"
"strings"
"time"
@@ -19,14 +18,9 @@ import (
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/logger"
basicauth "github.com/99designs/basicauth-go"
"github.com/go-chi/chi/v5/middleware"
"github.com/go-chi/cors"
"github.com/go-chi/httprate"
"github.com/prometheus/client_golang/prometheus"
metrics "github.com/slok/go-http-metrics/metrics/prometheus"
ghmm "github.com/slok/go-http-metrics/middleware"
"github.com/slok/go-http-metrics/middleware/std"
"go.uber.org/fx"
)
@@ -134,17 +128,6 @@ func ipFromHostPort(hostPort string) string {
// X-Real-IP are honoured only when the direct peer is a
// trusted proxy; otherwise the direct peer is returned so a
// spoofed header cannot forge the logged address.
//
// Each proxy appends to X-Forwarded-For the address it took the
// request from, so the entries on the right are written by the
// trusted proxies and those further left by the client. The
// client's address is therefore the right-most entry that is not
// a trusted proxy. An entry written as an address with a port is
// read as that address, both for the trust check and as the
// result. When every entry is a trusted proxy, or the walk from
// the right meets an entry that is not an address at all (such as
// "unknown"), the peer is used. X-Real-IP is read only when there
// is no X-Forwarded-For entry at all.
func clientIP(
remoteAddr string,
header http.Header,
@@ -156,49 +139,28 @@ func clientIP(
return peer
}
forwarded := forwardedFor(header)
if len(forwarded) == 0 {
if xr := strings.TrimSpace(header.Get("X-Real-IP")); validIP(xr) {
return xr
}
return peer
if xff := firstForwardedFor(header.Get("X-Forwarded-For")); xff != "" {
return xff
}
for _, entry := range slices.Backward(forwarded) {
if !validIP(entry) {
return peer
}
if !addrInAny(entry, trusted) {
return entry
}
if xr := strings.TrimSpace(header.Get("X-Real-IP")); validIP(xr) {
return xr
}
return peer
}
// forwardedFor returns the entries of X-Forwarded-For in order,
// leaving out blank ones. A proxy may add its entry as a header
// line of its own rather than append it to the line the client
// sent, so every line is read, not only the first. Some proxies
// write an entry as an address with a port, such as
// 198.51.100.7:5000 or [2001:db8::1]:443; the port is removed so
// that the entry is read as its address.
func forwardedFor(header http.Header) []string {
value := strings.Join(header.Values("X-Forwarded-For"), ",")
var entries []string
// firstForwardedFor returns the left-most valid address in an
// X-Forwarded-For list (the original client), or "" if none.
func firstForwardedFor(value string) string {
for part := range strings.SplitSeq(value, ",") {
entry := strings.TrimSpace(part)
if entry != "" {
entries = append(entries, ipFromHostPort(entry))
candidate := strings.TrimSpace(part)
if validIP(candidate) {
return candidate
}
}
return entries
return ""
}
func validIP(s string) bool {
@@ -330,16 +292,12 @@ func (s *Middleware) MaxBodyBytes(
// Recoverer returns middleware that recovers from a panic in a
// downstream handler, logs the panic and stack trace through
// slog, and responds 500 with no body, unless a status was already
// written, as Write500OnPanic writes one for a handler's panic.
// http.ErrAbortHandler is re-panicked so the server can abort the
// response as intended.
// slog, and responds 500 with no body. http.ErrAbortHandler is
// re-panicked so the server can abort the response as intended.
func (s *Middleware) Recoverer() func(http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
ww := middleware.NewWrapResponseWriter(w, r.ProtoMajor)
defer func() {
rec := recover()
if rec == nil {
@@ -357,43 +315,10 @@ func (s *Middleware) Recoverer() func(http.Handler) http.Handler {
"stack", string(debug.Stack()),
)
if ww.Status() == 0 {
ww.WriteHeader(http.StatusInternalServerError)
}
w.WriteHeader(http.StatusInternalServerError)
}()
next.ServeHTTP(ww, r)
},
)
}
}
// Write500OnPanic returns middleware that writes 500 when a downstream
// handler panics before writing a status, and lets the panic go on to
// Sentry and Recoverer. Recoverer, which comes first, would write its
// 500 only after the request log and the metrics had recorded the
// status they saw; placed after each of them, this makes them record
// the 500.
func (s *Middleware) Write500OnPanic() func(http.Handler) http.Handler {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
ww := middleware.NewWrapResponseWriter(w, r.ProtoMajor)
defer func() {
rec := recover()
if rec == nil {
return
}
if ww.Status() == 0 {
ww.WriteHeader(http.StatusInternalServerError)
}
panic(rec)
}()
next.ServeHTTP(ww, r)
next.ServeHTTP(w, r)
},
)
}
@@ -439,25 +364,3 @@ func (s *Middleware) RateLimit(
),
)
}
// Metrics returns middleware that records each request's duration and
// response size, and the requests in progress, in registry. They are
// labelled by the request path.
func (s *Middleware) Metrics(
registry prometheus.Registerer,
) func(http.Handler) http.Handler {
mdlw := ghmm.New(ghmm.Config{
Recorder: metrics.NewRecorder(metrics.Config{Registry: registry}),
})
return std.HandlerProvider("", mdlw)
}
// MetricsAuth returns middleware that lets a request through only with
// METRICS_USERNAME and METRICS_PASSWORD as its basic auth credentials,
// and answers any other with 401.
func (s *Middleware) MetricsAuth() func(http.Handler) http.Handler {
return basicauth.New("metrics", map[string][]string{
s.params.Config.MetricsUsername: {s.params.Config.MetricsPassword},
})
}
internal/middleware/middleware_test.go → backend/internal/middleware/middleware_test.go
+6 -247
View File
@@ -4,7 +4,6 @@ import (
"bytes"
"encoding/json"
"errors"
"log"
"log/slog"
"net/http"
"net/http/httptest"
@@ -17,24 +16,16 @@ import (
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/middleware"
"github.com/go-chi/chi/v5"
chimiddleware "github.com/go-chi/chi/v5/middleware"
"github.com/prometheus/client_golang/prometheus"
)
const (
// loopbackPeer is a remote address inside the trusted-proxy allowlist.
loopbackPeer = "127.0.0.1:5000"
// loopbackIP is the address of loopbackPeer, which ClientIP returns
// when it uses the peer.
loopbackIP = "127.0.0.1"
// forwardedIP is the client address presented via X-Forwarded-For.
forwardedIP = "203.0.113.7"
// realIP is the client address presented via X-Real-IP.
realIP = "203.0.113.9"
// appendedIP is the X-Forwarded-For entry a trusted proxy appended
// after the entries the client wrote.
appendedIP = "198.51.100.7"
)
func mustPrefixes(t *testing.T, cidrs ...string) []netip.Prefix {
@@ -91,35 +82,10 @@ func clientIPCases() []clientIPCase {
want: forwardedIP,
},
{
name: "trusted proxy uses right-most of chain",
remoteAddr: loopbackPeer,
xff: "203.0.113.9, " + appendedIP,
want: appendedIP,
},
{
name: "trusted proxy entries are skipped from the right",
remoteAddr: loopbackPeer,
xff: "203.0.113.9, 10.0.0.5",
want: "203.0.113.9",
},
{
name: "chain of only trusted proxies uses peer",
remoteAddr: loopbackPeer,
xff: "10.0.0.5, 10.1.2.3",
want: loopbackIP,
},
{
name: "entry that is not an address uses peer",
remoteAddr: loopbackPeer,
xff: "203.0.113.9, unknown",
want: loopbackIP,
},
{
name: "x-real-ip ignored when forwarded-for has entries",
remoteAddr: loopbackPeer,
xff: "10.0.0.5",
xRealIP: realIP,
want: loopbackIP,
name: "trusted proxy uses left-most of chain",
remoteAddr: "10.1.2.3:5000",
xff: forwardedIP + ", 10.1.2.3",
want: forwardedIP,
},
{
name: "trusted proxy falls back to x-real-ip",
@@ -148,7 +114,7 @@ func clientIPCases() []clientIPCase {
name: "trusted proxy with garbage header uses peer",
remoteAddr: loopbackPeer,
xff: "not-an-ip",
want: loopbackIP,
want: "127.0.0.1",
},
}
}
@@ -179,47 +145,6 @@ func TestClientIP(t *testing.T) {
}
}
// TestClientIPReadsEveryForwardedForLine checks that an entry a proxy
// adds as an X-Forwarded-For line of its own is read, and the line the
// client sent before it is not taken.
func TestClientIPReadsEveryForwardedForLine(t *testing.T) {
t.Parallel()
header := http.Header{}
header.Add("X-Forwarded-For", "203.0.113.9")
header.Add("X-Forwarded-For", appendedIP)
got := middleware.ClientIP(loopbackPeer, header,
mustPrefixes(t, "127.0.0.1/32"))
if got != appendedIP {
t.Errorf("ClientIP() = %q, want %q", got, appendedIP)
}
}
// TestClientIPReadsAddressWithPort checks that an X-Forwarded-For entry
// written as an address with a port is read as that address, both for
// the trust check and as the result.
func TestClientIPReadsAddressWithPort(t *testing.T) {
t.Parallel()
trusted := mustPrefixes(t, "127.0.0.1/32", "10.0.0.0/8")
for xff, want := range map[string]string{
"203.0.113.9, " + appendedIP + ":5000": appendedIP,
"203.0.113.9, [2001:db8::1]:443": "2001:db8::1",
"203.0.113.9, 10.0.0.5:5000": "203.0.113.9",
} {
header := http.Header{}
header.Set("X-Forwarded-For", xff)
got := middleware.ClientIP(loopbackPeer, header, trusted)
if got != want {
t.Errorf("X-Forwarded-For %q: ClientIP() = %q, want %q",
xff, got, want)
}
}
}
func TestSecurityHeaders(t *testing.T) {
t.Parallel()
@@ -398,172 +323,6 @@ func TestRecovererRepanicsOnAbortHandler(t *testing.T) {
}
}
// TestHandlerPanicIsLoggedAndCountedAs500 sends a request to a handler
// that panics through the middleware SetupRoutes puts around a route
// with metrics, in its order, leaving out those that write no status
// for a panic and Sentry, which TestSentry covers. The request log line
// and the metrics must give the 500 the client gets, and the panic must
// still reach Recoverer, which logs it.
func TestHandlerPanicIsLoggedAndCountedAs500(t *testing.T) {
t.Parallel()
var logbuf bytes.Buffer
mw := middleware.NewWithLogger(
slog.New(slog.NewJSONHandler(&logbuf, nil)),
)
registry := prometheus.NewRegistry()
handler := chi.Chain(
mw.Recoverer(),
chimiddleware.RequestID,
mw.Logging(),
mw.Write500OnPanic(),
mw.Metrics(registry),
mw.Write500OnPanic(),
).HandlerFunc(func(http.ResponseWriter, *http.Request) {
panic("boom")
})
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(), http.MethodGet, "/", http.NoBody)
handler.ServeHTTP(rec, req)
if rec.Code != http.StatusInternalServerError {
t.Fatalf("status = %d, want %d",
rec.Code, http.StatusInternalServerError)
}
request := findLogLine(t, logbuf.Bytes(), "request")
if request.Status != http.StatusInternalServerError {
t.Errorf("request log status = %d, want %d",
request.Status, http.StatusInternalServerError)
}
recovered := findLogLine(t, logbuf.Bytes(), "panic recovered")
if recovered.Panic != "boom" {
t.Errorf("panic recovered line has panic %q, want %q",
recovered.Panic, "boom")
}
for _, name := range []string{
"http_request_duration_seconds", "http_response_size_bytes",
} {
codes := metricCodes(t, registry, name)
if len(codes) != 1 || codes[0] != "500" {
t.Errorf("%s code labels = %v, want [500]", name, codes)
}
}
}
// loggedLine holds the fields the tests read from a JSON log line.
type loggedLine struct {
Msg string `json:"msg"`
Status int `json:"status"`
Panic string `json:"panic"`
}
// findLogLine returns the first of the JSON log lines in logged whose
// message is msg.
func findLogLine(t *testing.T, logged []byte, msg string) loggedLine {
t.Helper()
dec := json.NewDecoder(bytes.NewReader(logged))
for {
var line loggedLine
err := dec.Decode(&line)
if err != nil {
t.Fatalf("no %q line in the log: %v (%q)", msg, err, logged)
}
if line.Msg == msg {
return line
}
}
}
// metricCodes returns the code label of each series of the metric
// family name in registry.
func metricCodes(
t *testing.T,
registry *prometheus.Registry,
name string,
) []string {
t.Helper()
families, err := registry.Gather()
if err != nil {
t.Fatalf("gather metrics: %v", err)
}
var codes []string
for _, family := range families {
if family.GetName() != name {
continue
}
for _, metric := range family.GetMetric() {
for _, label := range metric.GetLabel() {
if label.GetName() == "code" {
codes = append(codes, label.GetValue())
}
}
}
}
return codes
}
// TestRecovererWritesNoSecondStatus checks, on a real server, that
// Recoverer does not write its 500 again after Write500OnPanic has
// written one, which the server would log as a superfluous
// WriteHeader call.
func TestRecovererWritesNoSecondStatus(t *testing.T) {
t.Parallel()
var serverLog bytes.Buffer
mw := middleware.NewWithLogger(slog.New(slog.DiscardHandler))
server := httptest.NewUnstartedServer(chi.Chain(
mw.Recoverer(),
mw.Write500OnPanic(),
).HandlerFunc(func(http.ResponseWriter, *http.Request) {
panic("boom")
}))
server.Config.ErrorLog = log.New(&serverLog, "", 0)
server.Start()
req, err := http.NewRequestWithContext(t.Context(),
http.MethodGet, server.URL, http.NoBody)
if err != nil {
t.Fatalf("new request: %v", err)
}
resp, err := server.Client().Do(req)
if err != nil {
t.Fatalf("request: %v", err)
}
_ = resp.Body.Close()
// Close waits for the handler to return, so whatever the server
// logs for this request is in serverLog after it.
server.Close()
if resp.StatusCode != http.StatusInternalServerError {
t.Errorf("status = %d, want %d",
resp.StatusCode, http.StatusInternalServerError)
}
if serverLog.Len() != 0 {
t.Errorf("server logged %q", serverLog.String())
}
}
// TestLoggingCutsRequestStringsToBound sends an over-long URL and
// over-long header values, and checks the request log writes each
// one cut to logger.MaxLoggedFieldBytes.
@@ -584,7 +343,7 @@ func TestLoggingCutsRequestStringsToBound(t *testing.T) {
http.MethodGet, "/"+long, http.NoBody)
req.Header.Set("User-Agent", long)
req.Header.Set("Referer", long)
req.Header.Set("X-Request-ID", long)
req.Header.Set("X-Request-Id", long)
handler.ServeHTTP(httptest.NewRecorder(), req)
internal/reportbuf/datadir.go → backend/internal/reportbuf/datadir.go
+32 -62
View File
@@ -18,15 +18,9 @@ var ErrDataDirOutsideVolume = errors.New(
// PrepareDataDir gets dir, the server's DATA_DIR, ready for owner, the
// user the server runs as, so that a host directory mounted at volume,
// /data in the image, needs no preparing: it creates dir, gives volume
// and the directories, regular files and symbolic links in it to
// owner, and gives volume and dir the mode the server gives a directory
// it creates. It leaves a file with a second name (hard link) as it
// is, as that name could be outside volume, and logs its path; it
// leaves a device, named pipe or socket as it is too (see chownFile).
// dir must be volume or a path below it, with no '.', '..', empty part
// or '/' at the end. On any system but Linux, the system of the image, it
// fails at the first file in volume that is not a directory (see
// chownFile).
// and everything in it to owner, and gives volume and dir the mode the
// server gives a directory it creates. dir must be volume or a path
// below it, with no '.', '..', empty part or '/' at the end.
//
// bin/entrypoint.sh runs this as root, which would follow a symbolic
// link anywhere, so every step goes through an os.Root opened on
@@ -38,9 +32,10 @@ var ErrDataDirOutsideVolume = errors.New(
// open, never following a link at the name it creates, and follows a
// link on the path only as the os.Root allows, so a relative link
// inside volume can lead it to create directories elsewhere inside
// volume. The owners and modes are set on files already opened (see
// chownAll and chmodDir), so the most that process can do is make a
// step fail or wait, or act on something else inside volume.
// volume. Lchown never changes what a link points to, and the modes
// are set on directories already opened (see chmodDir), so the most
// that process can do is make a step fail or wait, or act on
// something else inside volume.
func PrepareDataDir(volume, dir string, owner *user.User) error {
// rel is dir as a path from volume; IsLocal is false for one that
// leads out of it.
@@ -71,7 +66,7 @@ func PrepareDataDir(volume, dir string, owner *user.User) error {
return err
}
err = chownAll(root, ".", uid, gid)
err = lchownAll(root, ".", uid, gid)
if err != nil {
return err
}
@@ -84,23 +79,28 @@ func PrepareDataDir(volume, dir string, owner *user.User) error {
return chmodDir(root, rel)
}
// chownAll gives name, a directory inside root, and the directories,
// regular files and symbolic links in it to uid and gid, but not the
// files chownFile leaves. It opens each through root and gives the
// open file to them, as chmodDir sets a mode on the open directory.
// Root.Lchown would not hold: it acts on whatever is at the name by
// then, and a hard link swapped in there shares its owner with a file
// that could be outside root. A symbolic link is given to them itself,
// never what it points to, because in a directory that anyone can
// write to and that has the sticky bit set, as /tmp has, the kernel
// follows a link only for the link's owner or when the link and the
// directory have the same owner. chownAll goes into an entry only when
// the read found a directory there, so it follows no link it finds;
// one swapped in afterwards for a directory is followed only as the
// os.Root allows, and one swapped in for any other file is not
// followed at all (see chownFile).
func chownAll(root *os.Root, name string, uid, gid int) error {
entries, err := chownDir(root, name, uid, gid)
// lchownAll gives name, a directory inside root, and everything in it
// to uid and gid. It reads each directory opened through root, not
// through root.FS(), which refuses a name that is not valid UTF-8, and
// calls Lchown on every entry, which gives a symbolic link itself to
// them, not what it points to. It goes into an entry only when the
// read found a directory there, so it follows no link it finds; one
// swapped in for that directory afterwards is followed only as the
// os.Root allows.
func lchownAll(root *os.Root, name string, uid, gid int) error {
err := root.Lchown(name, uid, gid)
if err != nil {
return err
}
dir, err := root.Open(name)
if err != nil {
return err
}
entries, err := dir.ReadDir(-1)
_ = dir.Close()
if err != nil {
return err
}
@@ -108,9 +108,9 @@ func chownAll(root *os.Root, name string, uid, gid int) error {
for _, entry := range entries {
entryName := filepath.Join(name, entry.Name())
if entry.IsDir() {
err = chownAll(root, entryName, uid, gid)
err = lchownAll(root, entryName, uid, gid)
} else {
err = chownFile(root, entryName, uid, gid)
err = root.Lchown(entryName, uid, gid)
}
if err != nil {
@@ -121,36 +121,6 @@ func chownAll(root *os.Root, name string, uid, gid int) error {
return nil
}
// chownDir gives name, a directory inside root, to uid and gid, and
// returns what it holds. Like chmodDir, it opens name through root and
// refuses anything but a directory, which has no second name (hard
// link). It reads the open directory, not root.FS(), which refuses a
// name that is not valid UTF-8.
func chownDir(root *os.Root, name string, uid, gid int) ([]fs.DirEntry, error) {
dir, err := root.Open(name)
if err != nil {
return nil, err
}
defer func() { _ = dir.Close() }()
info, err := dir.Stat()
if err != nil {
return nil, err
}
if !info.IsDir() {
return nil, &fs.PathError{Op: "chown", Path: name, Err: syscall.ENOTDIR}
}
err = dir.Chown(uid, gid)
if err != nil {
return nil, err
}
return dir.ReadDir(-1)
}
// chmodDir gives name, a directory inside root, the mode the server
// gives a directory it creates. Root.Chmod would not hold: on Linux it
// checks that name is not a symbolic link, then sets the mode by name,
internal/reportbuf/datadir_test.go → backend/internal/reportbuf/datadir_test.go
+8 -40
View File
@@ -254,13 +254,10 @@ func TestPrepareDataDirTakesDirectoryNamedInLatin1(t *testing.T) {
requireOwner(t, filepath.Join(latin1, "f"), uint32(uid), uint32(gid))
}
// TestPrepareDataDirGivesVolumeToOwner gives the directories, regular
// files and symbolic links in the volume to a uid and gid that own
// nothing, which only root can do. A symbolic link in the volume to a
// directory outside it is given to them itself; what it points to is
// left as it was. A hard link to a file outside the volume, one to a
// symbolic link outside it and one to a named pipe outside it are left
// as they were, and so is a named pipe in the volume.
// TestPrepareDataDirGivesVolumeToOwner gives everything in the volume
// to a uid and gid that own nothing, which only root can do. A
// symbolic link in the volume to a directory outside it is given to
// them itself; what it points to is left as it was.
func TestPrepareDataDirGivesVolumeToOwner(t *testing.T) {
t.Parallel()
@@ -277,16 +274,6 @@ func TestPrepareDataDirGivesVolumeToOwner(t *testing.T) {
t.Fatal(err)
}
err = os.Symlink("f", filepath.Join(outside, "link"))
if err != nil {
t.Fatal(err)
}
err = syscall.Mkfifo(filepath.Join(outside, "fifo"), 0o600)
if err != nil {
t.Fatal(err)
}
err = os.Mkdir(old, 0o700)
if err != nil {
t.Fatal(err)
@@ -302,21 +289,6 @@ func TestPrepareDataDirGivesVolumeToOwner(t *testing.T) {
t.Fatal(err)
}
err = syscall.Mkfifo(filepath.Join(old, "fifo"), 0o600)
if err != nil {
t.Fatal(err)
}
// os.Link does not follow a symbolic link: it gives the link itself
// a second name.
for _, name := range []string{"f", "link", "fifo"} {
err = os.Link(filepath.Join(outside, name),
filepath.Join(old, "hardlink-to-"+name))
if err != nil {
t.Fatal(err)
}
}
err = reportbuf.PrepareDataDir(volume, filepath.Join(volume, reports),
&user.User{Uid: "4242", Gid: "4343"})
if err != nil {
@@ -324,16 +296,12 @@ func TestPrepareDataDirGivesVolumeToOwner(t *testing.T) {
}
for _, path := range []string{
volume, filepath.Join(volume, reports), old, filepath.Join(old, "f"),
filepath.Join(old, "link"),
volume, filepath.Join(volume, reports), old,
filepath.Join(old, "f"), filepath.Join(old, "link"),
} {
requireOwner(t, path, 4242, 4343)
}
for _, path := range []string{
outside, filepath.Join(outside, "f"), filepath.Join(outside, "link"),
filepath.Join(outside, "fifo"), filepath.Join(old, "fifo"),
} {
requireOwner(t, path, 0, 0)
}
requireOwner(t, outside, 0, 0)
requireOwner(t, filepath.Join(outside, "f"), 0, 0)
}
internal/reportbuf/export_test.go → backend/internal/reportbuf/export_test.go
View File
internal/reportbuf/reportbuf.go → backend/internal/reportbuf/reportbuf.go
+55 -128
View File
@@ -1,9 +1,6 @@
// Package reportbuf accumulates telemetry reports in memory
// and periodically flushes them to zstd-compressed JSONL files,
// deleting the oldest files to keep them under a size cap. Before the
// server starts, PrepareDataDir gets the directory those files are
// kept in, DATA_DIR, ready for the user the server runs as: it creates
// it and gives it and the volume it is on to that user.
// deleting the oldest files to keep them under a size cap.
package reportbuf
import (
@@ -16,6 +13,7 @@ import (
"log/slog"
"os"
"path/filepath"
"slices"
"strings"
"sync"
"sync/atomic"
@@ -72,9 +70,11 @@ type Buffer struct {
// except in tests that hold the write open or make it fail.
fileCreated func(f *os.File)
// files are the report files that may be deleted to make room,
// oldest first: those in dataDir at start, in name order, then
// each one this buffer writes, once it is complete. A file still
// being written is not among them. filesBytes is their total size.
// in name order, which is oldest first: those in dataDir at
// start, and each one this buffer writes, put in at its place by
// name once it is complete, even when an older file's write
// completes after a newer one's. A file still being written is
// not among them. filesBytes is their total size.
files []reportFile
filesBytes int64
log *slog.Logger
@@ -85,30 +85,12 @@ type Buffer struct {
now func() time.Time
// seq numbers the report files, so that two named in the same
// millisecond still get different names.
seq atomic.Int64
seq atomic.Uint64
stopOnce sync.Once
// thresholdWriteWaiting is set while a write Append started at
// flushSizeThreshold waits for writeMu; Append starts no other
// while it is set.
thresholdWriteWaiting atomic.Bool
// usedBytes is what Append checks against maxBytes: the size
// of the report files in dataDir, plus the reports waiting to
// be written to one at their uncompressed size.
usedBytes int64
// writeErr is the error of the last write of a report file to
// finish, nil if it succeeded or none has. While it is set, Append
// refuses reports, and the reports of that write wait in buf for
// the next flush.
writeErr error
// writeMu is held across each write of a report file, so writes
// never overlap: a failed write puts its reports back in buf before
// the next write takes them, which keeps them in the order they
// were appended.
writeMu sync.Mutex
// writers are the goroutines that write report files: flushLoop,
// and each one Append starts at flushSizeThreshold. OnStop waits
// for them before the final flush.
writers sync.WaitGroup
}
// New creates a Buffer and registers lifecycle hooks to
@@ -133,33 +115,16 @@ func New(
lc.Append(fx.Hook{
OnStart: func(_ context.Context) error {
// The errors name DATA_DIR, as config.New's do for the
// settings it checks.
err := os.MkdirAll(b.dataDir, dirPerms)
if err != nil {
return fmt.Errorf("DATA_DIR %q: %w", b.dataDir, err)
}
// Creating and removing a file stops the start when no
// file can be created in DATA_DIR, instead of the first
// write of a report file failing after reports were
// answered 200. A full disk is not caught: the empty
// file is still created.
f, err := os.CreateTemp(b.dataDir, "")
if err != nil {
return fmt.Errorf("DATA_DIR %q: %w", b.dataDir, err)
}
err = errors.Join(f.Close(), os.Remove(f.Name()))
if err != nil {
return fmt.Errorf("DATA_DIR %q: %w", b.dataDir, err)
return fmt.Errorf("create data dir: %w", err)
}
// Report files left by earlier runs count too, and are
// the first to be deleted to make room.
files, err := reportFiles(b.dataDir)
if err != nil {
return fmt.Errorf("DATA_DIR %q: %w", b.dataDir, err)
return err
}
b.mu.Lock()
@@ -177,7 +142,7 @@ func New(
b.mu.Unlock()
b.writers.Go(b.flushLoop)
go b.flushLoop()
return nil
},
@@ -188,14 +153,7 @@ func New(
var err error
b.stopOnce.Do(func() {
// Closing done ends flushLoop after any flush it is
// running. Wait for it and for the writes Append
// started, which the process exiting would cut off;
// one that fails puts its reports back in buf, for the
// final flush to write.
close(b.done)
b.writers.Wait()
err = b.flushLocked()
})
@@ -209,13 +167,11 @@ func New(
}
// Append marshals v as a single JSON line and appends it to
// the buffer. It stores nothing and returns an error if the last
// write of a report file failed, until a write succeeds again. If the
// line would take usedBytes past maxBytes, the oldest report files are
// deleted to make room; it stores nothing and returns ErrFull if that
// cannot make room. If the buffer reaches the size threshold, it starts
// a write of the reports in the background (see flushAtThreshold),
// unless one it started is still waiting.
// the buffer. If the line would take usedBytes past maxBytes, the
// oldest report files are deleted to make room; it stores nothing
// and returns ErrFull if that cannot make room. If the buffer
// reaches the size threshold, it is drained and written to disk
// asynchronously.
func (b *Buffer) Append(v any) error {
line, err := json.Marshal(v)
if err != nil {
@@ -226,13 +182,6 @@ func (b *Buffer) Append(v any) error {
b.mu.Lock()
if b.writeErr != nil {
err = fmt.Errorf("report files cannot be written: %w", b.writeErr)
b.mu.Unlock()
return err
}
b.deleteOldestFiles(lineBytes)
if b.usedBytes+lineBytes > b.maxBytes {
@@ -245,9 +194,18 @@ func (b *Buffer) Append(v any) error {
b.buf.Write(line)
b.buf.WriteByte('\n')
if b.buf.Len() >= flushSizeThreshold &&
b.thresholdWriteWaiting.CompareAndSwap(false, true) {
b.writers.Go(b.flushAtThreshold)
if b.buf.Len() >= flushSizeThreshold {
data := b.drainBuf()
b.mu.Unlock()
go func() {
writeErr := b.writeFile(data)
if writeErr != nil {
b.log.Error("flush reports failed", "error", writeErr)
}
}()
return nil
}
b.mu.Unlock()
@@ -255,16 +213,6 @@ func (b *Buffer) Append(v any) error {
return nil
}
// LastWriteFailed reports whether the last write of a report file to
// finish failed: false at start until a write fails, and false again
// once a write succeeds. While it is true, Append refuses reports.
func (b *Buffer) LastWriteFailed() bool {
b.mu.Lock()
defer b.mu.Unlock()
return b.writeErr != nil
}
// deleteOldestFiles deletes report files, oldest first, until n more
// bytes fit under maxBytes. It deletes none when the reports waiting
// to be written leave no room for n even with every file gone, since
@@ -315,28 +263,21 @@ func (b *Buffer) flushLoop() {
}
}
// flushLocked waits for any write of a report file under way, then
// writes the reports waiting in the buffer to a new one.
// flushLocked acquires the lock, drains the buffer, and
// writes the data to a compressed file.
func (b *Buffer) flushLocked() error {
b.writeMu.Lock()
defer b.writeMu.Unlock()
b.mu.Lock()
return b.writeFile()
}
if b.buf.Len() == 0 {
b.mu.Unlock()
// flushAtThreshold is the write Append starts when the buffer reaches
// flushSizeThreshold. Once any write under way is done, it lets Append
// start another and writes the reports waiting in the buffer.
func (b *Buffer) flushAtThreshold() {
b.writeMu.Lock()
defer b.writeMu.Unlock()
b.thresholdWriteWaiting.Store(false)
err := b.writeFile()
if err != nil {
b.log.Error("flush reports failed", "error", err)
return nil
}
data := b.drainBuf()
b.mu.Unlock()
return b.writeFile(data)
}
// drainBuf copies the buffer contents and resets it.
@@ -349,22 +290,9 @@ func (b *Buffer) drainBuf() []byte {
return data
}
// writeFile takes the reports waiting in the buffer, if any, and writes
// them to a new timestamped zstd-compressed JSONL file in the data
// directory. If the write fails, it puts the reports back in the
// buffer. The caller must hold b.writeMu.
func (b *Buffer) writeFile() error {
b.mu.Lock()
if b.buf.Len() == 0 {
b.mu.Unlock()
return nil
}
data := b.drainBuf()
b.mu.Unlock()
// writeFile writes data, reports drained from the buffer, to a new
// timestamped zstd-compressed JSONL file in the data directory.
func (b *Buffer) writeFile(data []byte) error {
// The timestamp comes first, so the names sort by time; the number
// after it tells apart files named in the same millisecond.
ts := b.now().UTC().Format("2006-01-02T15-04-05.000Z")
@@ -372,30 +300,29 @@ func (b *Buffer) writeFile() error {
size, err := b.createFile(filepath.Join(b.dataDir, name), data)
// The reports no longer wait to be written, so they stop counting
// at their uncompressed size. If the write failed they are lost;
// otherwise they count as the file, which from here on may be
// deleted to make room.
b.mu.Lock()
defer b.mu.Unlock()
b.writeErr = err
b.usedBytes -= int64(len(data))
if err != nil {
// The reports go back in front of any appended since, for the
// next flush to write, and still count at their uncompressed
// size.
appended := bytes.Clone(b.buf.Bytes())
b.buf.Reset()
b.buf.Write(data)
b.buf.Write(appended)
return err
}
// The reports no longer wait to be written, so they stop counting
// at their uncompressed size and count as the file, which from here
// on may be deleted to make room.
b.usedBytes -= int64(len(data))
b.usedBytes += size
b.filesBytes += size
b.files = append(b.files, reportFile{name: name, size: size})
// At its place by name, not at the end: another write, of a newer
// file, may have completed while this one was being written.
i, _ := slices.BinarySearchFunc(b.files, name,
func(f reportFile, target string) int {
return strings.Compare(f.name, target)
})
b.files = slices.Insert(b.files, i, reportFile{name: name, size: size})
return nil
}
backend/internal/reportbuf/reportbuf_test.go
+919
View File
@@ -0,0 +1,919 @@
package reportbuf_test
import (
"encoding/json"
"errors"
"fmt"
"io/fs"
"os"
"path/filepath"
"slices"
"strconv"
"strings"
"sync"
"sync/atomic"
"testing"
"time"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/reportbuf"
"github.com/klauspost/compress/zstd"
"go.uber.org/fx"
"go.uber.org/fx/fxtest"
)
// TestFlushOnShutdown proves the flush-on-shutdown path: a
// report appended after start but before the periodic flush
// window must reach disk when the fx lifecycle stops. This is
// the exact case that silent data loss on restart used to
// destroy.
func TestFlushOnShutdown(t *testing.T) {
dir := t.TempDir()
t.Setenv("DATA_DIR", dir)
var buf *reportbuf.Buffer
app := fxtest.New(t,
fx.Provide(
globals.New,
logger.New,
config.New,
reportbuf.New,
),
fx.Populate(&buf),
)
app.RequireStart()
err := buf.Append(map[string]string{"probe": "shutdown"})
if err != nil {
t.Fatalf("append report: %v", err)
}
// RequireStop runs the reportbuf OnStop hook, which is the
// only code path that flushes buffered reports on shutdown.
app.RequireStop()
if !hasReportFile(t, dir) {
t.Fatal("no report file on disk after shutdown; " +
"the buffered report was lost")
}
}
// TestFailedFinalFlushFailsStop proves a final flush that cannot
// write its file makes the stop fail, which makes the process
// exit non-zero instead of dropping the buffered reports silently.
func TestFailedFinalFlushFailsStop(t *testing.T) {
dir := t.TempDir()
t.Setenv("DATA_DIR", dir)
var buf *reportbuf.Buffer
app := fxtest.New(t,
fx.Provide(
globals.New,
logger.New,
config.New,
reportbuf.New,
),
fx.Populate(&buf),
)
app.RequireStart()
err := buf.Append(map[string]string{"probe": "shutdown"})
if err != nil {
t.Fatalf("append report: %v", err)
}
// Removing the data directory leaves the final flush nowhere to
// write. A read-only directory would not do: tests run as root
// in the backend image, and root ignores the read-only bit.
err = os.RemoveAll(dir)
if err != nil {
t.Fatalf("remove data dir: %v", err)
}
err = app.Stop(t.Context())
if !errors.Is(err, fs.ErrNotExist) {
t.Fatalf("stop error = %v, want the final flush's error", err)
}
}
// startBuffer starts a Buffer through fx, as main does, with the
// DATA_DIR and DATA_DIR_MAX_BYTES the calling test has set.
func startBuffer(t *testing.T) *reportbuf.Buffer {
t.Helper()
var buf *reportbuf.Buffer
app := fxtest.New(t,
fx.Provide(
globals.New,
logger.New,
config.New,
reportbuf.New,
),
fx.Populate(&buf),
)
app.RequireStart()
t.Cleanup(app.RequireStop)
return buf
}
// lineBytes is what one report takes in the buffer: its JSON and a
// newline.
func lineBytes(t *testing.T, report any) int {
t.Helper()
line, err := json.Marshal(report)
if err != nil {
t.Fatalf("marshal report: %v", err)
}
return len(line) + 1
}
// TestAppendPastCapIsRefused fills the cap with a report not yet
// written. The next report is refused, and the report file already in
// DATA_DIR is kept: it is smaller than a report, so deleting it could
// not make room.
func TestAppendPastCapIsRefused(t *testing.T) {
report := map[string]string{"id": "cap"}
dir := t.TempDir()
earlier := reportFilePath(dir, 1)
writeBytes(t, earlier, 1)
t.Setenv("DATA_DIR", dir)
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(1+lineBytes(t, report)))
buf := startBuffer(t)
err := buf.Append(report)
if err != nil {
t.Fatalf("report that fills the cap exactly: %v", err)
}
err = buf.Append(report)
if !errors.Is(err, reportbuf.ErrFull) {
t.Fatalf("report past the cap: error = %v, want ErrFull", err)
}
if !exists(t, earlier) {
t.Fatal("report file deleted, though that could not make room")
}
}
// TestOldestReportFileDeletedFirst starts on a data directory holding
// report files from an earlier run, and a file that is not a report,
// which neither counts nor is ever deleted. Nothing is deleted while
// there is room; then only the oldest report file is.
func TestOldestReportFileDeletedFirst(t *testing.T) {
const fileBytes = 100
report := map[string]string{"id": "oldest"}
dir := t.TempDir()
oldest := reportFilePath(dir, 1)
kept := []string{
reportFilePath(dir, 2),
reportFilePath(dir, 3),
filepath.Join(dir, "notes.txt"),
}
writeBytes(t, oldest, fileBytes)
for _, path := range kept {
writeBytes(t, path, fileBytes)
}
t.Setenv("DATA_DIR", dir)
// Room for the three report files and one report.
t.Setenv("DATA_DIR_MAX_BYTES",
strconv.Itoa(3*fileBytes+lineBytes(t, report)))
buf := startBuffer(t)
err := buf.Append(report)
if err != nil {
t.Fatalf("report that fills the cap exactly: %v", err)
}
if !exists(t, oldest) {
t.Fatal("oldest report file deleted while there was room")
}
err = buf.Append(report)
if err != nil {
t.Fatalf("report past the cap: %v", err)
}
if exists(t, oldest) {
t.Fatal("oldest report file kept when room was needed")
}
for _, path := range kept {
if !exists(t, path) {
t.Fatalf("%s deleted; only the oldest report file should be", path)
}
}
}
// TestStartDeletesFilesPastCap starts on report files past the cap,
// as after the cap is lowered: the oldest are deleted until the rest
// fit.
func TestStartDeletesFilesPastCap(t *testing.T) {
const fileBytes = 100
dir := t.TempDir()
oldest := reportFilePath(dir, 1)
kept := []string{reportFilePath(dir, 2), reportFilePath(dir, 3)}
writeBytes(t, oldest, fileBytes)
for _, path := range kept {
writeBytes(t, path, fileBytes)
}
t.Setenv("DATA_DIR", dir)
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(len(kept)*fileBytes))
startBuffer(t)
if exists(t, oldest) {
t.Fatal("oldest report file kept, though the files were past the cap")
}
for _, path := range kept {
if !exists(t, path) {
t.Fatalf("%s deleted, though the rest fit without it", path)
}
}
}
// TestWrittenReportsCountAtFileSize checks that once reports are
// written, they count as their compressed file, not their
// uncompressed size, which frees room under the cap.
func TestWrittenReportsCountAtFileSize(t *testing.T) {
// Repetitive, so its file is far smaller than its JSON.
report := map[string]string{"id": strings.Repeat("a", 1000)}
size := lineBytes(t, report)
dir := t.TempDir()
t.Setenv("DATA_DIR", dir)
// Room for the report twice over only if the first one counts
// at its file's size by the time the second arrives.
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(2*size-1))
buf := startBuffer(t)
err := buf.Append(report)
if err != nil {
t.Fatalf("first report: %v", err)
}
err = buf.Flush()
if err != nil {
t.Fatalf("flush: %v", err)
}
err = buf.Append(report)
if err != nil {
t.Fatalf("second report, after the first was written: %v", err)
}
if !hasReportFile(t, dir) {
t.Fatal("first report's file deleted, though the second fit beside it")
}
}
// TestWrittenFilesDeletedToMakeRoom writes one report file after
// another under a small cap. Every report must be taken; files are
// deleted only when the report would not fit beside them, and the
// files kept leave room for it.
func TestWrittenFilesDeletedToMakeRoom(t *testing.T) {
const (
maxBytes = 200
// One file each, which take far more than maxBytes together.
reports = 50
)
report := map[string]string{"id": "written"}
size := int64(lineBytes(t, report))
dir := t.TempDir()
t.Setenv("DATA_DIR", dir)
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(maxBytes))
buf := startBuffer(t)
for range reports {
before := reportFilesBytes(t, dir)
err := buf.Append(report)
if err != nil {
t.Fatalf("with %d bytes of report files: %v", before, err)
}
after := reportFilesBytes(t, dir)
if before+size <= maxBytes && after != before {
t.Fatalf("files deleted, though the report fit beside "+
"their %d bytes", before)
}
if after+size > maxBytes {
t.Fatalf("%d bytes of report files kept, leaving no room "+
"for the report", after)
}
err = buf.Flush()
if err != nil {
t.Fatalf("flush: %v", err)
}
}
}
// TestFailedDeletionStillCounts makes deleting the oldest report file
// fail. It is still there, so it still takes room, and the next oldest
// is deleted in its place.
func TestFailedDeletionStillCounts(t *testing.T) {
const fileBytes = 100
report := map[string]string{"id": "stuck"}
dir := t.TempDir()
stuck := reportFilePath(dir, 1)
next := reportFilePath(dir, 2)
newest := reportFilePath(dir, 3)
for _, path := range []string{stuck, next, newest} {
writeBytes(t, path, fileBytes)
}
t.Setenv("DATA_DIR", dir)
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(3*fileBytes))
buf := startBuffer(t)
// A directory that is not empty cannot be deleted, even by root,
// which the tests run as in the backend image.
err := os.Remove(stuck)
if err != nil {
t.Fatalf("remove %s: %v", stuck, err)
}
err = os.Mkdir(stuck, 0o750)
if err != nil {
t.Fatalf("make directory %s: %v", stuck, err)
}
writeBytes(t, filepath.Join(stuck, "file"), 1)
err = buf.Append(report)
if err != nil {
t.Fatalf("report past the cap: %v", err)
}
if exists(t, next) {
t.Fatal("next oldest report file kept: the failed deletion " +
"counted as making room")
}
if !exists(t, newest) {
t.Fatal("newest report file deleted, though deleting one made room")
}
}
// TestFileDeletedByHandFreesRoom deletes the oldest report file by
// hand after start. When room is needed, its room counts as freed, so
// no other file is deleted.
func TestFileDeletedByHandFreesRoom(t *testing.T) {
const fileBytes = 100
report := map[string]string{"id": "by-hand"}
dir := t.TempDir()
gone := reportFilePath(dir, 1)
kept := reportFilePath(dir, 2)
writeBytes(t, gone, fileBytes)
writeBytes(t, kept, fileBytes)
t.Setenv("DATA_DIR", dir)
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(2*fileBytes))
buf := startBuffer(t)
err := os.Remove(gone)
if err != nil {
t.Fatalf("remove %s: %v", gone, err)
}
err = buf.Append(report)
if err != nil {
t.Fatalf("report past the cap: %v", err)
}
if !exists(t, kept) {
t.Fatal("report file deleted, though the one deleted by hand " +
"had made room")
}
}
// TestFileBeingWrittenIsNeverDeleted holds the write of one report file
// open while a second write completes, then sends a report that needs
// room. Deleting either file would make it, and the one being written is
// the older, but only the complete one may be deleted. Once the first
// write is complete, its file is deleted when room is needed.
func TestFileBeingWrittenIsNeverDeleted(t *testing.T) {
report := map[string]string{"id": "writing"}
t.Setenv("DATA_DIR", t.TempDir())
// Room for two reports waiting to be written, but not for two
// beside a report file.
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(2*lineBytes(t, report)))
buf := startBuffer(t)
created := make(chan string)
release := make(chan struct{})
buf.OnFileCreated(func(f *os.File) {
created <- f.Name()
<-release
})
err := buf.Append(report)
if err != nil {
t.Fatalf("first report: %v", err)
}
flushed := make(chan error)
go func() { flushed <- buf.Flush() }()
writing := <-created
// Only the first write is held; the second goes through, and
// so do the writes after it, the final one at stop included.
var complete string
buf.OnFileCreated(func(f *os.File) { complete = f.Name() })
// Errorf, not Fatalf, until the first write is released, so that a
// failure here does not leave it held.
err = buf.Append(report)
if err != nil {
t.Errorf("second report: %v", err)
}
err = buf.Flush()
if err != nil {
t.Errorf("flush of the second report: %v", err)
}
err = buf.Append(report)
if err != nil {
t.Errorf("report that needs room: %v", err)
}
if !exists(t, writing) {
t.Error("report file deleted while it was being written")
}
if exists(t, complete) {
t.Error("complete report file kept, though room was needed")
}
close(release)
err = <-flushed
if err != nil {
t.Fatalf("flush of the first report: %v", err)
}
err = buf.Append(report)
if err != nil {
t.Fatalf("report after the first write was complete: %v", err)
}
if exists(t, writing) {
t.Fatal("complete report file kept when room was needed")
}
}
// TestFailedWriteStopsCounting makes a write fail once its file is
// created. Its reports are lost, so they stop counting, and the part of
// the file written is removed, so it takes no room.
func TestFailedWriteStopsCounting(t *testing.T) {
report := map[string]string{"id": "failed"}
t.Setenv("DATA_DIR", t.TempDir())
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(lineBytes(t, report)))
buf := startBuffer(t)
var failed string
// Closing the file under the write makes the write fail.
buf.OnFileCreated(func(f *os.File) {
failed = f.Name()
_ = f.Close()
})
err := buf.Append(report)
if err != nil {
t.Fatalf("report that fills the cap exactly: %v", err)
}
err = buf.Flush()
if err == nil {
t.Fatal("flush succeeded, though its file was closed under it")
}
if exists(t, failed) {
t.Fatal("file of the failed write kept")
}
// Writes from here on, the final one at stop included, succeed.
buf.OnFileCreated(func(*os.File) {})
err = buf.Append(report)
if err != nil {
t.Fatalf("report after the failed write: %v", err)
}
}
// TestConcurrentAppendsStopAtCap appends from many goroutines at once
// with room for exactly roomFor reports: exactly that many must be
// taken, which holds only if Append checks and counts each report
// under one lock.
func TestConcurrentAppendsStopAtCap(t *testing.T) {
const (
roomFor = 5
senders = 50
)
// Large, so each Append takes long enough for the senders to
// overlap while the cap is reached.
report := map[string]string{"id": strings.Repeat("a", 1_000_000)}
t.Setenv("DATA_DIR", t.TempDir())
t.Setenv("DATA_DIR_MAX_BYTES",
strconv.Itoa(roomFor*lineBytes(t, report)))
buf := startBuffer(t)
var (
taken atomic.Int64
wg sync.WaitGroup
)
start := make(chan struct{})
for range senders {
wg.Go(func() {
<-start
err := buf.Append(report)
if err == nil {
taken.Add(1)
} else if !errors.Is(err, reportbuf.ErrFull) {
t.Errorf("append: %v", err)
}
})
}
close(start)
wg.Wait()
if got := taken.Load(); got != roomFor {
t.Fatalf("%d reports taken, want %d", got, roomFor)
}
}
// TestTwoFlushesInOneMillisecond flushes twice within one millisecond,
// as a flush for size and the final flush at shutdown can: each flush
// must write a file of its own, and the files must hold every report.
func TestTwoFlushesInOneMillisecond(t *testing.T) {
const flushes = 2
dir := t.TempDir()
t.Setenv("DATA_DIR", dir)
buf := startBuffer(t)
buf.StopClock(time.Date(2026, 1, 1, 0, 0, 0, 0, time.UTC))
for id := 1; id <= flushes; id++ {
err := buf.Append(map[string]int{"id": id})
if err != nil {
t.Fatalf("append report %d: %v", id, err)
}
err = buf.Flush()
if err != nil {
t.Fatalf("flush %d: %v", id, err)
}
}
files, err := readReportFiles(dir)
if err != nil {
t.Fatalf("read report files: %v", err)
}
if len(files) != flushes {
t.Fatalf("%d report files after %d flushes", len(files), flushes)
}
for id := 1; id <= flushes; id++ {
want := fmt.Sprintf(`{"id":%d}`+"\n", id)
if !slices.Contains(files, want) {
t.Fatalf("no report file holds report %d alone", id)
}
}
}
// TestReportFileHoldsTheLinesAppended flushes three reports and reads
// their file back: it must decompress to exactly their JSON lines, in
// the order they were appended.
func TestReportFileHoldsTheLinesAppended(t *testing.T) {
dir := t.TempDir()
t.Setenv("DATA_DIR", dir)
buf := startBuffer(t)
for _, id := range []int{1, 2, 3} {
err := buf.Append(map[string]int{"id": id})
if err != nil {
t.Fatalf("append report %d: %v", id, err)
}
}
err := buf.Flush()
if err != nil {
t.Fatalf("flush: %v", err)
}
files, err := readReportFiles(dir)
if err != nil {
t.Fatalf("read report files: %v", err)
}
want := `{"id":1}` + "\n" + `{"id":2}` + "\n" + `{"id":3}` + "\n"
if len(files) != 1 || files[0] != want {
t.Fatalf("report files = %q, want one holding %q", files, want)
}
}
// TestFlushAtSizeThreshold appends reports until the buffer holds
// FlushSizeThreshold bytes. The append that gets it there must write
// them all to one report file, with no call to Flush and the periodic
// flush a minute away, and no earlier append may write one.
func TestFlushAtSizeThreshold(t *testing.T) {
dir := t.TempDir()
t.Setenv("DATA_DIR", dir)
buf := startBuffer(t)
// Large reports, so the threshold takes a few hundred appends.
pad := strings.Repeat("a", 64<<10)
var appended strings.Builder
for id := 0; appended.Len() < reportbuf.FlushSizeThreshold; id++ {
report := map[string]any{"id": id, "pad": pad}
err := buf.Append(report)
if err != nil {
t.Fatalf("append report %d: %v", id, err)
}
line, err := json.Marshal(report)
if err != nil {
t.Fatalf("marshal report %d: %v", id, err)
}
appended.Write(line)
appended.WriteByte('\n')
}
// Append writes the file in the background, so wait for it.
deadline := time.Now().Add(10 * time.Second)
for {
files, err := readReportFiles(dir)
if err == nil && len(files) == 1 && files[0] == appended.String() {
return
}
if time.Now().After(deadline) {
t.Fatalf("%d report files (error: %v), want one holding the "+
"%d bytes appended", len(files), err, appended.Len())
}
time.Sleep(10 * time.Millisecond)
}
}
// reportFilesBytes returns the total size of the report files in dir.
func reportFilesBytes(t *testing.T, dir string) int64 {
t.Helper()
paths, err := filepath.Glob(filepath.Join(dir, "reports-*.jsonl.zst"))
if err != nil {
t.Fatalf("list report files: %v", err)
}
var total int64
for _, path := range paths {
info, statErr := os.Stat(path)
if statErr != nil {
t.Fatalf("stat %s: %v", path, statErr)
}
total += info.Size()
}
return total
}
// readReportFiles returns the decompressed contents of each report
// file in dir. A file still being written does not decompress, so it
// gives an error.
func readReportFiles(dir string) ([]string, error) {
files := os.DirFS(dir)
names, err := fs.Glob(files, "reports-*.jsonl.zst")
if err != nil {
return nil, fmt.Errorf("list report files: %w", err)
}
dec, err := zstd.NewReader(nil)
if err != nil {
return nil, fmt.Errorf("create zstd decoder: %w", err)
}
defer dec.Close()
contents := make([]string, 0, len(names))
for _, name := range names {
compressed, readErr := fs.ReadFile(files, name)
if readErr != nil {
return nil, fmt.Errorf("read %s: %w", name, readErr)
}
data, decErr := dec.DecodeAll(compressed, nil)
if decErr != nil {
return nil, fmt.Errorf("decompress %s: %w", name, decErr)
}
contents = append(contents, string(data))
}
return contents, nil
}
// reportFilePath returns the path in dir of a report file named as
// written on the given day of January 2026, so that a lower day sorts
// as older.
func reportFilePath(dir string, day int) string {
return filepath.Join(dir,
fmt.Sprintf("reports-2026-01-%02dT00-00-00.000Z-1.jsonl.zst", day))
}
func writeBytes(t *testing.T, path string, n int) {
t.Helper()
err := os.WriteFile(path, make([]byte, n), 0o600)
if err != nil {
t.Fatalf("write %s: %v", path, err)
}
}
func exists(t *testing.T, path string) bool {
t.Helper()
_, err := os.Stat(path)
if errors.Is(err, fs.ErrNotExist) {
return false
}
if err != nil {
t.Fatalf("stat %s: %v", path, err)
}
return true
}
func hasReportFile(t *testing.T, dir string) bool {
t.Helper()
entries, err := os.ReadDir(dir)
if err != nil {
t.Fatalf("read data dir: %v", err)
}
for _, e := range entries {
if strings.HasSuffix(e.Name(), ".jsonl.zst") {
info, statErr := e.Info()
if statErr != nil {
t.Fatalf("stat %s: %v", e.Name(), statErr)
}
if info.Size() > 0 {
return true
}
}
}
return false
}
// TestFilesDeletedOldestFirstWhenWritesOverlap holds the write of an
// older report file open until a newer one's write completes, then
// releases it. When room is needed, the older file is deleted first,
// though its write was the last to complete.
func TestFilesDeletedOldestFirstWhenWritesOverlap(t *testing.T) {
const maxBytes = 1000
report := map[string]string{"id": "overlap"}
t.Setenv("DATA_DIR", t.TempDir())
t.Setenv("DATA_DIR_MAX_BYTES", strconv.Itoa(maxBytes))
buf := startBuffer(t)
created := make(chan string)
release := make(chan struct{})
buf.OnFileCreated(func(f *os.File) {
created <- f.Name()
<-release
})
err := buf.Append(report)
if err != nil {
t.Fatalf("older report: %v", err)
}
flushed := make(chan error)
go func() { flushed <- buf.Flush() }()
older := <-created
// Only the older write is held; the newer one goes through, and
// so do the writes after it, the final one at stop included.
var newer string
buf.OnFileCreated(func(f *os.File) { newer = f.Name() })
// Errorf, not Fatalf, until the older write is released, so that a
// failure here does not leave it held.
err = buf.Append(report)
if err != nil {
t.Errorf("newer report: %v", err)
}
err = buf.Flush()
if err != nil {
t.Errorf("flush of the newer report: %v", err)
}
close(release)
err = <-flushed
if err != nil {
t.Fatalf("flush of the older report: %v", err)
}
info, err := os.Stat(newer)
if err != nil {
t.Fatalf("stat %s: %v", newer, err)
}
// A report that fits beside the newer file alone, so deleting the
// older one makes exactly the room it needs.
pad := maxBytes - int(info.Size()) - lineBytes(t, map[string]string{"id": ""})
err = buf.Append(map[string]string{"id": strings.Repeat("a", pad)})
if err != nil {
t.Fatalf("report that needs room: %v", err)
}
if exists(t, older) {
t.Fatal("older report file kept when room was needed")
}
if !exists(t, newer) {
t.Fatal("newer report file deleted before the older one")
}
}
backend/internal/server/export_test.go
+11
View File
@@ -0,0 +1,11 @@
package server
// MaxRequestBodyBytes exposes the router-wide body limit to the
// external tests.
const MaxRequestBodyBytes = maxRequestBodyBytes
// ListenAddr exposes the address the server listens on to the
// external tests.
func (s *Server) ListenAddr() string {
return s.newHTTPServer().Addr
}
internal/server/http.go → backend/internal/server/http.go
View File
internal/server/http_test.go → backend/internal/server/http_test.go
View File
backend/internal/server/routes.go
+41
View File
@@ -0,0 +1,41 @@
package server
import (
"time"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
)
const (
requestTimeout = 60 * time.Second
// maxRequestBodyBytes caps every request body. A route group
// can mount s.mw.MaxBodyBytes with a smaller value to lower
// its bound, but cannot raise it: this cap runs first.
maxRequestBodyBytes int64 = 1 << 20 // 1 MiB
)
// SetupRoutes configures the chi router with middleware and
// all application routes.
func (s *Server) SetupRoutes() {
s.router = chi.NewRouter()
s.router.Use(s.mw.Recoverer())
s.router.Use(middleware.RequestID)
s.router.Use(s.mw.Logging())
s.router.Use(s.mw.SecurityHeaders())
s.router.Use(s.mw.CORS(s.params.Config.CORSAllowedOrigins))
s.router.Use(s.mw.MaxBodyBytes(maxRequestBodyBytes))
s.router.Use(middleware.Timeout(requestTimeout))
s.router.Get(
"/.well-known/healthcheck",
s.h.HandleHealthCheck(),
)
s.router.Route("/api/v1", func(r chi.Router) {
r.With(s.mw.RateLimit(s.params.Config.ReportsPerMinute)).
Post("/reports", s.h.HandleReport())
})
}
backend/internal/server/routes_test.go
+142
View File
@@ -0,0 +1,142 @@
package server_test
import (
"net/http"
"net/http/httptest"
"strings"
"testing"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/handlers"
"sneak.berlin/go/netwatch/internal/healthcheck"
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/middleware"
"sneak.berlin/go/netwatch/internal/reportbuf"
"sneak.berlin/go/netwatch/internal/server"
"go.uber.org/fx"
"go.uber.org/fx/fxtest"
)
// newServer builds a Server from the same constructors as main,
// configured from the environment. It is never started, so nothing
// listens.
func newServer(t *testing.T) *server.Server {
t.Helper()
var srv *server.Server
app := fxtest.New(t,
fx.Provide(
config.New,
globals.New,
handlers.New,
healthcheck.New,
logger.New,
middleware.New,
reportbuf.New,
server.New,
),
fx.Populate(&srv),
)
err := app.Err()
if err != nil {
t.Fatalf("build server: %v", err)
}
return srv
}
// TestReportsAreRateLimited checks that POST /api/v1/reports is
// behind the per-address rate limit, set here to two a minute.
func TestReportsAreRateLimited(t *testing.T) {
t.Setenv("REPORTS_PER_MINUTE", "2")
srv := newServer(t)
srv.SetupRoutes()
post := func() int {
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodPost, "/api/v1/reports",
strings.NewReader(`{"clientId":"c1","hosts":[]}`),
)
srv.ServeHTTP(rec, req)
return rec.Code
}
for i := range 2 {
if code := post(); code != http.StatusOK {
t.Fatalf("report %d: status = %d, want %d",
i+1, code, http.StatusOK)
}
}
if code := post(); code != http.StatusTooManyRequests {
t.Fatalf("third report in a minute: status = %d, want %d",
code, http.StatusTooManyRequests)
}
}
// TestCORSAllowedOriginsReachTheRouter checks that an origin listed in
// CORS_ALLOWED_ORIGINS is allowed by the router, not only when handed
// to the CORS middleware directly.
func TestCORSAllowedOriginsReachTheRouter(t *testing.T) {
const origin = "https://netwatch.example:8443"
t.Setenv("CORS_ALLOWED_ORIGINS", origin)
srv := newServer(t)
srv.SetupRoutes()
// The preflight a browser sends before it POSTs JSON from origin.
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodOptions, "/api/v1/reports", http.NoBody)
req.Header.Set("Origin", origin)
req.Header.Set("Access-Control-Request-Method", http.MethodPost)
req.Header.Set("Access-Control-Request-Headers", "content-type")
srv.ServeHTTP(rec, req)
got := rec.Header().Get("Access-Control-Allow-Origin")
if got != origin {
t.Fatalf("Access-Control-Allow-Origin = %q, want %q", got, origin)
}
}
// TestHealthCheckRejectsOversizeBody sends the health check, which
// never reads its body, a body one byte over the limit. Only the
// router-wide body limit can reject it.
func TestHealthCheckRejectsOversizeBody(t *testing.T) {
t.Parallel()
srv := newServer(t)
srv.SetupRoutes()
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodGet, "/.well-known/healthcheck",
strings.NewReader(
strings.Repeat("x", int(server.MaxRequestBodyBytes)+1),
),
)
srv.ServeHTTP(rec, req)
if rec.Code != http.StatusRequestEntityTooLarge {
t.Fatalf("status = %d, want %d",
rec.Code, http.StatusRequestEntityTooLarge)
}
if got := rec.Body.String(); got != "{\"status\":\"error\"}\n" {
t.Errorf("body = %q, want %q", got, "{\"status\":\"error\"}\n")
}
got := rec.Header().Get("Content-Type")
if got != "application/json; charset=utf-8" {
t.Errorf("Content-Type = %q, want a JSON content type", got)
}
}
internal/server/server.go → backend/internal/server/server.go
+2 -41
View File
@@ -7,10 +7,8 @@ package server
import (
"context"
"fmt"
"log/slog"
"net/http"
"time"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
@@ -18,15 +16,10 @@ import (
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/middleware"
"github.com/getsentry/sentry-go"
"github.com/go-chi/chi/v5"
"go.uber.org/fx"
)
// sentryFlushTimeout is how long shutdown waits for Sentry to send
// what it still holds.
const sentryFlushTimeout = 2 * time.Second
// Params defines the dependencies for Server.
type Params struct {
fx.In
@@ -63,11 +56,6 @@ func New(
s.log = params.Logger.Get()
s.shutdowner = params.Shutdowner
err := s.enableSentry()
if err != nil {
return nil, err
}
lc.Append(fx.Hook{
OnStart: func(_ context.Context) error {
// Build the router and http.Server synchronously
@@ -79,7 +67,7 @@ func New(
s.SetupRoutes()
s.httpServer = s.newHTTPServer()
go func() { s.listenAndServe() }()
go s.listenAndServe()
return nil
},
@@ -99,37 +87,10 @@ func (s *Server) ServeHTTP(
s.router.ServeHTTP(w, r)
}
// enableSentry sets Sentry up when SENTRY_DSN is set, so that
// SetupRoutes can report panics to it. With SENTRY_DSN empty it does
// nothing. A DSN Sentry refuses stops the start.
func (s *Server) enableSentry() error {
if s.params.Config.SentryDSN == "" {
return nil
}
err := sentry.Init(sentry.ClientOptions{
Dsn: s.params.Config.SentryDSN,
Release: s.params.Globals.Appname + "-" + s.params.Globals.Version,
})
if err != nil {
return fmt.Errorf("SENTRY_DSN: %w", err)
}
s.log.Info("sentry error reporting activated")
return nil
}
// shutdown gracefully stops the HTTP server within the
// deadline of the context fx provides for OnStop, then gives
// Sentry, if set up, time to send what it still holds.
// deadline of the context fx provides for OnStop.
func (s *Server) shutdown(ctx context.Context) error {
err := s.httpServer.Shutdown(ctx)
if s.params.Config.SentryDSN != "" {
sentry.Flush(sentryFlushTimeout)
}
if err != nil {
s.log.Error("server clean shutdown failed", "error", err)
backend/script/build
Executable
+21
View File
@@ -0,0 +1,21 @@
#!/bin/sh
# script/build: compile the static netwatch-server binary into the
# backend project root, with its version stamped in.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
# VERSION comes from the environment (the root Dockerfile passes its
# ARG VERSION in). Unset or empty, it is git describe, or "dev" where
# there is no git or no repository history.
version="${VERSION:-$(git describe --always --dirty 2>/dev/null || echo dev)}"
CGO_ENABLED=0 go build -trimpath \
-ldflags "-s -w -X main.Version=$version" \
-o netwatch-server ./cmd/netwatch-server/
}
main "$@"
backend/script/clean
Executable
+12
View File
@@ -0,0 +1,12 @@
#!/bin/sh
# script/clean: remove build artifacts.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
rm -f netwatch-server
}
main "$@"
backend/script/fmt
Executable
+12
View File
@@ -0,0 +1,12 @@
#!/bin/sh
# script/fmt: format the Go sources (writes).
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
go fmt ./...
}
main "$@"
backend/script/fmt-check
Executable
+18
View File
@@ -0,0 +1,18 @@
#!/bin/sh
# script/fmt-check: check Go formatting (read-only). Same scope as
# script/fmt, but fails instead of writing.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
unformatted="$(gofmt -l .)"
if [ -n "$unformatted" ]; then
echo "Files not formatted:" >&2
echo "$unformatted" >&2
exit 1
fi
}
main "$@"
backend/script/lint
Executable
+50
View File
@@ -0,0 +1,50 @@
#!/bin/sh
# script/lint: run golangci-lint over the backend. This runs inside the
# lint stage of the root Dockerfile, whose digest-pinned golangci-lint
# image provides the linter; nothing installs golangci-lint on the host.
# From a checkout, run `make lint` at the repo root, which builds that
# stage.
#
# .golangci.yml is standardized org-wide and must never be edited here
# (REPO_POLICIES.md). Its last silent drift replaced the v2 schema with
# v1 keys, which left every threshold in the file inert while the build
# stayed green. So the file is first checked against the canonical
# copy's sha256: a local comparison, no network, nothing unpinned.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
# The sha256 of the org standard .golangci.yml. When that file changes in
# sneak/prompts and is copied here again, this changes with it.
GOLANGCI_CONFIG_SHA256="a79b63a254602a5318db5d0e9a06bc71b84bf0c1d896305229d8bfed1d1b1776"
main() {
cd "$ROOT"
if [ ! -f .golangci.yml ]; then
echo "backend/.golangci.yml is missing. Copy the org standard verbatim" >&2
echo "from https://git.eeqj.de/sneak/prompts/raw/branch/main/.golangci.yml" >&2
exit 1
fi
actual="$(sha256sum .golangci.yml | cut -d' ' -f1)"
if [ -z "$actual" ]; then
echo "sha256sum is missing or printed no hash, so" >&2
echo "backend/.golangci.yml could not be checked." >&2
exit 1
fi
if [ "$actual" != "$GOLANGCI_CONFIG_SHA256" ]; then
echo "backend/.golangci.yml does not match GOLANGCI_CONFIG_SHA256" >&2
echo "in backend/script/lint." >&2
echo " expected $GOLANGCI_CONFIG_SHA256" >&2
echo " actual $actual" >&2
echo "Compare it with the org standard," >&2
echo "https://git.eeqj.de/sneak/prompts/raw/branch/main/.golangci.yml" >&2
echo "- If they differ, it was edited here: restore the org standard" >&2
echo " verbatim. Do not edit it." >&2
echo "- If they are the same, the org standard changed: set" >&2
echo " GOLANGCI_CONFIG_SHA256 in backend/script/lint to the actual hash." >&2
exit 1
fi
golangci-lint run ./...
}
main "$@"
script/run → backend/script/run
+1 -2
View File
@@ -1,6 +1,5 @@
#!/bin/sh
# script/run: build with script/build, then run netwatch-server locally
# with its defaults: port 8080, reports stored in data/reports.
# script/run: build and run netwatch-server locally.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
backend/script/test
Executable
+20
View File
@@ -0,0 +1,20 @@
#!/bin/sh
# script/test: run the backend test suite with the race detector and
# coverage. Go's own -timeout bounds the tests and not their compile,
# so a cold build cache cannot fail it. The race detector needs cgo,
# and so a C compiler. If the tests fail, they run again with -v for
# the details, and the script fails even if that run passes.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
go test -timeout 30s -race -cover ./... || {
echo "--- Rerunning with -v for details ---"
go test -timeout 30s -race -v ./...
exit 1
}
}
main "$@"
bin/entrypoint.sh
+76 -109
View File
@@ -13,35 +13,30 @@ set -u
# address and start anyway, and reports a bad port without naming
# PORT, so a value that is not a usable port stops the container here,
# before either process starts.
check_port() {
export PORT="${PORT:-8080}"
case "$PORT" in
*[!0-9]*)
echo "entrypoint: PORT must be a port number, not '$PORT'" >&2
exit 1
;;
esac
# The length is checked first because, for a number too big for it,
# the shell's test prints an error and is false, so the range checks
# alone would let it through.
if [ "${#PORT}" -gt 5 ] || [ "$PORT" -lt 1 ] || [ "$PORT" -gt 65535 ]; then
echo "entrypoint: PORT must be from 1 to 65535, not '$PORT'" >&2
export PORT="${PORT:-8080}"
case "$PORT" in
*[!0-9]*)
echo "entrypoint: PORT must be a port number, not '$PORT'" >&2
exit 1
fi
if [ "$PORT" -eq 8081 ]; then
echo "entrypoint: PORT cannot be 8081, netwatch-server" \
"listens there" >&2
exit 1
fi
}
;;
esac
# The length is checked first because, for a number too big for it,
# the shell's test prints an error and is false, so the range checks
# alone would let it through.
if [ "${#PORT}" -gt 5 ] || [ "$PORT" -lt 1 ] || [ "$PORT" -gt 65535 ]; then
echo "entrypoint: PORT must be from 1 to 65535, not '$PORT'" >&2
exit 1
fi
if [ "$PORT" -eq 8081 ]; then
echo "entrypoint: PORT cannot be 8081, netwatch-server listens there" >&2
exit 1
fi
# TRUSTED_PROXIES names the reverse proxies in front of the container,
# as IP addresses or CIDRs separated by commas. nginx takes the client
# address from X-Forwarded-For only on a request from one of them.
# Unset, they are the three private ranges of RFC 1918; set and empty,
# nginx trusts no one, which is why the default below follows - and not
# :-. configs/nginx.conf includes the file written here, one
# set_real_ip_from line per entry.
# address from X-Forwarded-For only on a request from one of them, so
# unset or empty, it trusts no one. nginx.conf includes the file written
# here, one set_real_ip_from line per entry.
#
# nginx looks up an entry it cannot read as an address as a hostname,
# and trusts what it finds (1.2.3 is found as 1.2.0.3). So each entry
@@ -50,64 +45,57 @@ check_port() {
# TRUSTED_PROXIES. Its error, naming the CIDR, is dropped for the one
# below, naming the entry as written. set -f keeps a * in an entry from
# becoming a list of file names.
write_trusted_proxies() {
TRUSTED_PROXIES="${TRUSTED_PROXIES-10.0.0.0/8,172.16.0.0/12,192.168.0.0/16}"
set -f
for proxy in $(printf '%s' "$TRUSTED_PROXIES" | tr ',' ' '); do
case "$proxy" in
*/*) cidr="$proxy" ;;
*:*) cidr="$proxy/128" ;;
*) cidr="$proxy/32" ;;
esac
if ! netwatch-server check-cidr "$cidr" 2> /dev/null; then
echo "entrypoint: TRUSTED_PROXIES must be IP addresses or CIDRs" \
"separated by commas; '$proxy' is neither" >&2
exit 1
fi
echo "set_real_ip_from $cidr;"
done > /etc/nginx/trusted-proxies.conf
}
TRUSTED_PROXIES="${TRUSTED_PROXIES:-}"
set -f
for proxy in $(printf '%s' "$TRUSTED_PROXIES" | tr ',' ' '); do
case "$proxy" in
*/*) cidr="$proxy" ;;
*:*) cidr="$proxy/128" ;;
*) cidr="$proxy/32" ;;
esac
if ! netwatch-server check-cidr "$cidr" 2> /dev/null; then
echo "entrypoint: TRUSTED_PROXIES must be IP addresses or CIDRs" \
"separated by commas; '$proxy' is neither" >&2
exit 1
fi
echo "set_real_ip_from $cidr;"
done > /etc/nginx/trusted-proxies.conf
# netwatch-server keeps its report files in DATA_DIR, on the /data
# volume, which may be a host directory owned by root or by another
# uid. Here, as root, netwatch-server prepare-data-dir creates DATA_DIR
# and gives /data and the directories, regular files and symbolic links
# in it to the netwatch user, so the host directory needs no preparing.
# A file with a second name (hard link) keeps its owner, as that name
# could be outside /data, and its path is logged. It stops the start,
# naming DATA_DIR, unless DATA_DIR is /data or a path below it, and it
# acts on nothing outside /data, whatever symbolic or hard links it
# meets there.
prepare_data_dir() {
export DATA_DIR="${DATA_DIR:-/data/reports}"
netwatch-server prepare-data-dir "$DATA_DIR" || exit 1
}
# and gives /data and everything in it to the netwatch user, so the
# host directory needs no preparing. It stops the start, naming
# DATA_DIR, unless DATA_DIR is /data or a path below it, and it acts on
# nothing outside /data, whatever symbolic links it meets there.
export DATA_DIR="${DATA_DIR:-/data/reports}"
netwatch-server prepare-data-dir "$DATA_DIR" || exit 1
# A stop signal is only noted here; the loop below acts on it.
stop_requested=""
trap 'stop_requested=yes' TERM INT
# netwatch-server runs as the netwatch user and listens on loopback
# only, on a port other than the public one; configs/nginx.conf proxies
# to this address. Its only client is nginx, so it takes the client
# address nginx passes on from 127.0.0.1 alone, whatever TRUSTED_PROXIES
# the container has. The netwatch user has no login shell, hence -s
# only, on a port other than the public one; nginx.conf proxies to this
# address. Its only client is nginx, so it takes the client address
# nginx passes on from 127.0.0.1 alone, whatever TRUSTED_PROXIES the
# container has. The netwatch user has no login shell, hence -s
# /bin/sh. busybox su replaces itself with the command instead of
# staying on as its parent, so $! is the server's own PID.
start_backend() {
BIND_ADDRESS=127.0.0.1 PORT=8081 TRUSTED_PROXIES=127.0.0.1/32 \
su -s /bin/sh netwatch -c 'exec netwatch-server' &
backend=$!
}
BIND_ADDRESS=127.0.0.1 PORT=8081 TRUSTED_PROXIES=127.0.0.1/32 \
su -s /bin/sh netwatch -c 'exec netwatch-server' &
backend=$!
# nginx starts through the nginx image's own entrypoint, which applies
# the image's start-up configuration and then replaces itself with
# nginx. Part of that start-up configuration renders configs/nginx.conf
# into conf.d with nginx listening on PORT. NGINX_ENVSUBST_FILTER limits
# nginx. Part of that start-up configuration renders nginx.conf into
# conf.d with nginx listening on PORT. NGINX_ENVSUBST_FILTER limits
# that rendering to PORT: a variable nginx itself uses, such as $uri,
# would otherwise be replaced by an environment variable of the same
# name.
start_nginx() {
NGINX_ENVSUBST_FILTER='^PORT$' \
/docker-entrypoint.sh nginx -g 'daemon off;' &
nginx=$!
}
NGINX_ENVSUBST_FILTER='^PORT$' \
/docker-entrypoint.sh nginx -g 'daemon off;' &
nginx=$!
running() {
kill -0 "$1" 2>/dev/null
@@ -116,47 +104,26 @@ running() {
# POSIX sh cannot wait for whichever of two children exits first, so
# look once a second. The shell collects a child that has exited while
# it runs sleep, and running() is false for that child from then on.
wait_for_stop_or_exit() {
while [ -z "$stop_requested" ] && running "$backend" && running "$nginx"; do
sleep 1
done
}
while [ -z "$stop_requested" ] && running "$backend" && running "$nginx"; do
sleep 1
done
# Stop both, then wait until neither is left.
stop_both() {
kill -TERM "$backend" "$nginx" 2>/dev/null
while running "$backend" || running "$nginx"; do
sleep 1
done
}
kill -TERM "$backend" "$nginx" 2>/dev/null
while running "$backend" || running "$nginx"; do
sleep 1
done
wait "$backend"
backend_status=$?
wait "$nginx"
nginx_status=$?
echo "entrypoint: netwatch-server exited $backend_status," \
"nginx exited $nginx_status"
# Success is a requested stop that both processes exited cleanly from.
exit_with_status() {
wait "$backend"
backend_status=$?
wait "$nginx"
nginx_status=$?
echo "entrypoint: netwatch-server exited $backend_status," \
"nginx exited $nginx_status"
if [ -n "$stop_requested" ] && [ "$backend_status" -eq 0 ] &&
[ "$nginx_status" -eq 0 ]; then
exit 0
fi
exit 1
}
main() {
check_port
write_trusted_proxies
prepare_data_dir
# A stop signal is only noted here; wait_for_stop_or_exit acts on it.
stop_requested=""
trap 'stop_requested=yes' TERM INT
start_backend
start_nginx
wait_for_stop_or_exit
stop_both
exit_with_status
}
main "$@"
if [ -n "$stop_requested" ] && [ "$backend_status" -eq 0 ] &&
[ "$nginx_status" -eq 0 ]; then
exit 0
fi
exit 1
cmd/netwatch-server/main.go
-19
View File
@@ -1,19 +0,0 @@
// Package main is the entry point for netwatch-server; package cli
// does the work.
package main
import (
"os"
"sneak.berlin/go/netwatch/internal/cli"
)
//nolint:gochecknoglobals // set via ldflags at build time
var (
Appname = "netwatch-server"
Version string
)
func main() {
os.Exit(cli.Main(os.Stderr, Appname, Version, os.Args[1:], cli.RunServer))
}
cmd/netwatch-server/main_test.go
-249
View File
@@ -1,249 +0,0 @@
package main
import (
"bytes"
"context"
"encoding/json"
"net"
"net/http"
"os"
"os/exec"
"os/signal"
"path/filepath"
"strings"
"syscall"
"testing"
"time"
)
// The tests run main() in a child process, this test binary started
// again with runMainEnv set, because main() can exit its process and
// takes its settings from the environment.
const runMainEnv = "NETWATCH_SERVER_RUN_MAIN"
// childTimeout bounds each child's whole run; it is killed after it.
const childTimeout = 10 * time.Second
func TestMain(m *testing.M) {
if os.Getenv(runMainEnv) != "" {
// A SIGTERM that comes before fx catches it is dropped, not fatal.
signal.Notify(make(chan os.Signal, 1), syscall.SIGTERM)
main()
return
}
os.Exit(m.Run())
}
// TestOutputIsJSON: off a terminal, every line the server writes from
// start to stop is JSON, fx's own lines included.
func TestOutputIsJSON(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(t.Context(), childTimeout)
defer cancel()
port := freePort(ctx, t)
child, stdout, stderr := startServer(ctx, t, t.TempDir(), port)
waitForHealthcheck(ctx, t, port)
// The child drops a SIGTERM that comes before fx catches it (see
// TestMain), so send one every 100ms until the test ends. ctx
// bounds the wait: when it ends, the child is killed.
stop := make(chan struct{})
defer close(stop)
go func() {
for {
_ = child.Process.Signal(syscall.SIGTERM)
select {
case <-stop:
return
case <-time.After(100 * time.Millisecond):
}
}
}()
err := child.Wait()
if err != nil {
t.Fatalf("server exit = %v, want success", err)
}
requireJSONLines(t, stdout, stderr)
if !strings.Contains(stdout.String(), `"msg":"starting"`) {
t.Fatalf("no startup line in stdout:\n%s", stdout)
}
}
// TestMalformedConfigFileStopsTheStart: a config file the server finds
// but cannot read stops the start, and the error is logged as JSON.
func TestMalformedConfigFileStopsTheStart(t *testing.T) {
t.Parallel()
ctx, cancel := context.WithTimeout(t.Context(), childTimeout)
defer cancel()
home := t.TempDir()
dir := filepath.Join(home, ".config", "netwatch-server")
err := os.MkdirAll(dir, 0o750)
if err != nil {
t.Fatal(err)
}
err = os.WriteFile(filepath.Join(dir, "netwatch-server.yaml"),
[]byte("PORT: [8080\n"), 0o600)
if err != nil {
t.Fatal(err)
}
child, stdout, stderr := startServer(ctx, t, home, freePort(ctx, t))
err = child.Wait()
if child.ProcessState.ExitCode() != 1 {
t.Fatalf("server exit = %v, want exit status 1", err)
}
requireJSONLines(t, stdout, stderr)
if !strings.Contains(stdout.String(), "netwatch-server.yaml") {
t.Fatalf("no error naming the config file in stdout:\n%s", stdout)
}
}
// TestRefusedSentryDSNStopsTheStart: a SENTRY_DSN that Sentry refuses
// stops the start, and the error, naming SENTRY_DSN, is logged as JSON.
func TestRefusedSentryDSNStopsTheStart(t *testing.T) {
t.Setenv("SENTRY_DSN", "not-a-dsn")
ctx, cancel := context.WithTimeout(t.Context(), childTimeout)
defer cancel()
child, stdout, stderr := startServer(ctx, t, t.TempDir(), freePort(ctx, t))
err := child.Wait()
if child.ProcessState.ExitCode() != 1 {
t.Fatalf("server exit = %v, want exit status 1", err)
}
requireJSONLines(t, stdout, stderr)
if !strings.Contains(stdout.String(), "SENTRY_DSN") {
t.Fatalf("no error naming SENTRY_DSN in stdout:\n%s", stdout)
}
}
// startServer runs main() in a child process listening on
// 127.0.0.1:port, with home as its HOME and working directory and its
// data directory in home, so it touches nothing outside home. Its
// stdout and stderr go to the two buffers returned, which hold all of
// it once child.Wait returns. The child is killed when ctx ends, and
// killed and reaped when the test ends if nothing waited for it.
func startServer(
ctx context.Context,
t *testing.T,
home, port string,
) (*exec.Cmd, *bytes.Buffer, *bytes.Buffer) {
t.Helper()
self, err := os.Executable()
if err != nil {
t.Fatal(err)
}
var stdout, stderr bytes.Buffer
child := exec.CommandContext(ctx, self) //nolint:gosec // this test binary
child.Dir = home
child.Env = append(os.Environ(),
runMainEnv+"=1",
"HOME="+home,
"DATA_DIR="+filepath.Join(home, "data"),
"BIND_ADDRESS=127.0.0.1",
"PORT="+port,
)
child.Stdout = &stdout
child.Stderr = &stderr
err = child.Start()
if err != nil {
t.Fatal(err)
}
t.Cleanup(func() {
if child.ProcessState == nil {
_ = child.Process.Kill()
_ = child.Wait()
}
})
return child, &stdout, &stderr
}
// freePort returns a TCP port on 127.0.0.1 that was free a moment ago.
func freePort(ctx context.Context, t *testing.T) string {
t.Helper()
var lc net.ListenConfig
l, err := lc.Listen(ctx, "tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
_ = l.Close()
_, port, err := net.SplitHostPort(l.Addr().String())
if err != nil {
t.Fatal(err)
}
return port
}
// waitForHealthcheck returns once the health check on port answers 200.
func waitForHealthcheck(ctx context.Context, t *testing.T, port string) {
t.Helper()
url := "http://127.0.0.1:" + port + "/.well-known/healthcheck"
for {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
if err != nil {
t.Fatal(err)
}
resp, err := http.DefaultClient.Do(req)
if err == nil {
_ = resp.Body.Close()
if resp.StatusCode == http.StatusOK {
return
}
}
select {
case <-ctx.Done():
t.Fatalf("health check never answered: %v", err)
case <-time.After(50 * time.Millisecond):
}
}
}
// requireJSONLines fails the test on each line of outs that is not
// JSON.
func requireJSONLines(t *testing.T, outs ...*bytes.Buffer) {
t.Helper()
for _, out := range outs {
for line := range strings.Lines(out.String()) {
if !json.Valid([]byte(line)) {
t.Errorf("line is not JSON: %s", line)
}
}
}
}
eslint.config.js
+2 -2
View File
@@ -1,5 +1,5 @@
// eslint's recommended rules over every JavaScript file in the repo.
// make lint runs it, in the frontend-lint stage of Dockerfile.
// script/frontend-lint runs it, in the frontend-lint stage of Dockerfile.
import js from "@eslint/js";
import globals from "globals";
import { defineConfig } from "eslint/config";
@@ -8,7 +8,7 @@ export default defineConfig([
js.configs.recommended,
{
// The page, and facts.js, which the viewport test runs inside it.
files: ["web/src/**/*.js", "test/viewport/facts.js"],
files: ["src/**/*.js", "test/viewport/facts.js"],
languageOptions: {
globals: {
...globals.browser,
go.sum
-107
View File
@@ -1,107 +0,0 @@
github.com/99designs/basicauth-go v0.0.0-20230316000542-bf6f9cbbf0f8 h1:nMpu1t4amK3vJWBibQ5X/Nv0aXL+b69TQf2uK5PH7Go=
github.com/99designs/basicauth-go v0.0.0-20230316000542-bf6f9cbbf0f8/go.mod h1:3cARGAK9CfW3HoxCy1a0G4TKrdiKke8ftOMEOHyySYs=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
github.com/frankban/quicktest v1.14.6 h1:7Xjx+VpznH+oBnejlPUj8oUpdxnVs4f8XU8WnHkI4W8=
github.com/frankban/quicktest v1.14.6/go.mod h1:4ptaffx2x8+WTWXmUCuVU6aPUX1/Mz7zb5vbUoiM6w0=
github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
github.com/getsentry/sentry-go v0.49.0 h1:Ehejknu1l023Ub7QoRBVLAI7g3Jnhqku4oWx4B4Sh5s=
github.com/getsentry/sentry-go v0.49.0/go.mod h1:nuMJAoCfe1u0Bts2ocyNI+TW8HT84vRMqwA5Qq/SKUI=
github.com/go-chi/chi/v5 v5.2.5 h1:Eg4myHZBjyvJmAFjFvWgrqDTXFyOzjj7YIm3L3mu6Ug=
github.com/go-chi/chi/v5 v5.2.5/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
github.com/go-chi/cors v1.2.2 h1:Jmey33TE+b+rB7fT8MUy1u0I4L+NARQlK6LhzKPSyQE=
github.com/go-chi/cors v1.2.2/go.mod h1:sSbTewc+6wYHBBCW7ytsFSn836hqM7JxpglAy2Vzc58=
github.com/go-chi/httprate v0.16.0 h1:8V5DH9j6pSK6UQoBsTpvMyFxycqaKEIToyPKzHJjUa8=
github.com/go-chi/httprate v0.16.0/go.mod h1:A8lo+qRhk+s9LiuP5saS7XCGDXRXMcrueq0NfIuCa/I=
github.com/go-errors/errors v1.4.2 h1:J6MZopCL4uSllY1OfXM374weqZFFItUbrImctkmUxIA=
github.com/go-errors/errors v1.4.2/go.mod h1:sIVyrIiJhuEF+Pj9Ebtd6P/rEYROXFi3BopGUQ5a5Og=
github.com/go-viper/mapstructure/v2 v2.4.0 h1:EBsztssimR/CONLSZZ04E8qAkxNYq4Qp9LvH92wZUgs=
github.com/go-viper/mapstructure/v2 v2.4.0/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
github.com/klauspost/compress v1.19.1 h1:VsB4HPswih7mmZ8WleSFQ75c/Ui1M4trX5oAsJnhSlk=
github.com/klauspost/compress v1.19.1/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ=
github.com/klauspost/cpuid/v2 v2.2.10 h1:tBs3QSyvjDyFTq3uoc/9xFpCuOsJQFNPiAhYdw2skhE=
github.com/klauspost/cpuid/v2 v2.2.10/go.mod h1:hqwkgyIinND0mEev00jJYCxPNVRVXFQeu1XKlok6oO0=
github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0t5Ec4=
github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
github.com/pingcap/errors v0.11.4 h1:lFuQV/oaUMGcD2tqt+01ROSmJs75VG1ToEOkZIZ4nE4=
github.com/pingcap/errors v0.11.4/go.mod h1:Oi8TUi2kEtXXLMJk9l1cGmz20kV3TaQ0usTwv5KuLY8=
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/prometheus/client_golang v1.24.1 h1:JnJkREXzWxUdCuPFpIWZiPispT9xVV59uiuyR2bPlnU=
github.com/prometheus/client_golang v1.24.1/go.mod h1:F+oSRECHg4sse5ucfYpYDeIv/hu68Zo0uoHKetWnzcE=
github.com/prometheus/client_model v0.6.2 h1:oBsgwpGs7iVziMvrGhE53c/GrLUsZdHnqNwqPLxwZyk=
github.com/prometheus/client_model v0.6.2/go.mod h1:y3m2F6Gdpfy6Ut/GBsUqTWZqCUvMVzSfMLjcu6wAwpE=
github.com/prometheus/common v0.70.1 h1:1HvjP4D5oL3t8RsPlwxA9onvvStjtIHYE5XuuwOi/PY=
github.com/prometheus/common v0.70.1/go.mod h1:VdFUQDMZK3VLkurFUVhia6uys/0suUp86TJz5qbJRhc=
github.com/prometheus/procfs v0.21.1 h1:GljZCt+zSTS+NZq88cyQ1LjZ+RCHp3uVuabBWA5+OJI=
github.com/prometheus/procfs v0.21.1/go.mod h1:aB55Cww9pdSJVHk0hUf0inxWyyjPogFIjmHKYgMKmtY=
github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
github.com/sagikazarmark/locafero v0.11.0 h1:1iurJgmM9G3PA/I+wWYIOw/5SyBtxapeHDcg+AAIFXc=
github.com/sagikazarmark/locafero v0.11.0/go.mod h1:nVIGvgyzw595SUSUE6tvCp3YYTeHs15MvlmU87WwIik=
github.com/slok/go-http-metrics v0.13.0 h1:lQDyJJx9wKhmbliyUsZ2l6peGnXRHjsjoqPt5VYzcP8=
github.com/slok/go-http-metrics v0.13.0/go.mod h1:HIr7t/HbN2sJaunvnt9wKP9xoBBVZFo1/KiHU3b0w+4=
github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 h1:+jumHNA0Wrelhe64i8F6HNlS8pkoyMv5sreGx2Ry5Rw=
github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8/go.mod h1:3n1Cwaq1E1/1lhQhtRK2ts/ZwZEhjcQeJQ1RuC6Q/8U=
github.com/spf13/afero v1.15.0 h1:b/YBCLWAJdFWJTN9cLhiXXcD7mzKn9Dm86dNnfyQw1I=
github.com/spf13/afero v1.15.0/go.mod h1:NC2ByUVxtQs4b3sIUphxK0NioZnmxgyCrfzeuq8lxMg=
github.com/spf13/cast v1.10.0 h1:h2x0u2shc1QuLHfxi+cTJvs30+ZAHOGRic8uyGTDWxY=
github.com/spf13/cast v1.10.0/go.mod h1:jNfB8QC9IA6ZuY2ZjDp0KtFO2LZZlg4S/7bzP6qqeHo=
github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
github.com/spf13/viper v1.21.0 h1:x5S+0EU27Lbphp4UKm1C+1oQO+rKx36vfCoaVebLFSU=
github.com/spf13/viper v1.21.0/go.mod h1:P0lhsswPGWD/1lZJ9ny3fYnVqxiegrlNrEmgLjbTCAY=
github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
github.com/zeebo/assert v1.3.0 h1:g7C04CbJuIDKNPFHmsk4hwZDO5O+kntRxzaUoNXj+IQ=
github.com/zeebo/assert v1.3.0/go.mod h1:Pq9JiuJQpG8JLJdtkwrJESF0Foym2/D9XMU5ciN/wJ0=
github.com/zeebo/xxh3 v1.0.2 h1:xZmwmqxHZA8AI603jOQ0tMqmBr9lPeFwGg6d+xy9DC0=
github.com/zeebo/xxh3 v1.0.2/go.mod h1:5NWz9Sef7zIDm2JHfFlcQvNekmcEl9ekUZQQKCYaDcA=
go.uber.org/dig v1.19.0 h1:BACLhebsYdpQ7IROQ1AGPjrXcP5dF80U3gKoFzbaq/4=
go.uber.org/dig v1.19.0/go.mod h1:Us0rSJiThwCv2GteUN0Q7OKvU7n5J4dxZ9JKUXozFdE=
go.uber.org/fx v1.24.0 h1:wE8mruvpg2kiiL1Vqd0CC+tr0/24XIB10Iwp2lLWzkg=
go.uber.org/fx v1.24.0/go.mod h1:AmDeGyS+ZARGKM4tlH4FY2Jr63VjbEDJHtqXTGP5hbo=
go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
go.uber.org/multierr v1.10.0 h1:S0h4aNzvfcFsC3dRF1jLoaov7oRaKqRGC/pUEJ2yvPQ=
go.uber.org/multierr v1.10.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y=
go.uber.org/zap v1.26.0 h1:sI7k6L95XOKS281NhVKOFCUNIvv9e0w4BF8N3u+tCRo=
go.uber.org/zap v1.26.0/go.mod h1:dtElttAiwGvoJ/vj4IwHBS/gXsEu/pZ50mUIRWuG0so=
go.yaml.in/yaml/v2 v2.4.4 h1:tuyd0P+2Ont/d6e2rl3be67goVK4R6deVxCUX5vyPaQ=
go.yaml.in/yaml/v2 v2.4.4/go.mod h1:gMZqIpDtDqOfM0uNfy0SkpRhvUryYH0Z6wdMYcacYXQ=
go.yaml.in/yaml/v3 v3.0.4 h1:tfq32ie2Jv2UxXFdLJdh3jXuOzWiL1fo0bu/FbuKpbc=
go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
golang.org/x/sys v0.47.0 h1:o7XGOvZQCADBQQ4Y7VNq2dRWQR7JmOUW8Kxx4ZsNgWs=
golang.org/x/sys v0.47.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
golang.org/x/text v0.40.0 h1:Ub2Z6/xjgF1WrYQz2nuITOEegKFtiIy+rieRJ5lHZKs=
golang.org/x/text v0.40.0/go.mod h1:hpnzDAfGV753zIKo+wk3u1bVKCGPbrnF7+7LBF/UHVY=
google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
web/index.html → index.html
+1 -1
View File
@@ -9,7 +9,7 @@
type="image/svg+xml"
href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>📡</text></svg>"
/>
<!-- Linked here, not imported by web/src/main.js, so the unit tests can
<!-- Linked here, not imported by src/main.js, so the unit tests can
import that module in Node, which cannot import CSS. -->
<link rel="stylesheet" href="/src/styles.css" />
</head>
internal/cli/cli.go
-143
View File
@@ -1,143 +0,0 @@
// Package cli runs netwatch-server from its command line: the
// check-cidr and prepare-data-dir subcommands, which bin/entrypoint.sh
// runs before it starts the server, and, given no arguments, the
// server, with the fx wiring.
package cli
import (
"fmt"
"io"
"os/user"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/handlers"
"sneak.berlin/go/netwatch/internal/healthcheck"
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/middleware"
"sneak.berlin/go/netwatch/internal/reportbuf"
"sneak.berlin/go/netwatch/internal/server"
"go.uber.org/fx"
"go.uber.org/fx/fxevent"
)
// usageExitCode is what Main returns for a command line it does not
// understand, the usual exit code for a usage error.
const usageExitCode = 2
// Main runs netwatch-server with args, its command line after the
// program's name, and returns the exit code. With no args, Main runs
// the server by calling serve with appname and version, the name and
// version the server logs and reports. With "check-cidr CIDR" or
// "prepare-data-dir DATA_DIR" it runs that subcommand, which writes its
// errors to stderr. Any other args get a one-line usage message on
// stderr and exit code 2. main passes os.Stderr and RunServer; the
// tests pass a buffer and a function of their own, so that no test
// starts the server. When serve is RunServer and the server fails to
// start, to listen or to stop, fx's Run exits the process with status 1
// and Main never returns.
func Main(
stderr io.Writer,
appname, version string,
args []string,
serve func(appname, version string),
) int {
// "netwatch-server check-cidr CIDR" exits 1, with the error, if
// this server would refuse CIDR in its TRUSTED_PROXIES.
// bin/entrypoint.sh runs it on each entry it gives nginx.
if len(args) == 2 && args[0] == "check-cidr" {
return checkCIDR(stderr, args[1])
}
// "netwatch-server prepare-data-dir DATA_DIR" gets DATA_DIR ready
// for the netwatch user, or exits 1 with the error; see
// reportbuf.PrepareDataDir. bin/entrypoint.sh runs it as root
// before it starts this server as that user.
if len(args) == 2 && args[0] == "prepare-data-dir" {
return prepareDataDir(stderr, "/data", args[1], "netwatch")
}
// Any other command line is refused, so that a mistyped one does
// not start the server.
if len(args) > 0 {
_, _ = fmt.Fprintln(stderr,
"usage: netwatch-server [check-cidr CIDR | prepare-data-dir DATA_DIR]")
return usageExitCode
}
serve(appname, version)
return 0
}
// checkCIDR returns 0 if the server would take cidr in its
// TRUSTED_PROXIES, and otherwise writes the error to stderr and
// returns 1.
func checkCIDR(stderr io.Writer, cidr string) int {
_, err := middleware.ParseTrustedProxies([]string{cidr})
if err != nil {
_, _ = fmt.Fprintln(stderr, err)
return 1
}
return 0
}
// prepareDataDir gets dataDir ready for the user named username with
// reportbuf.PrepareDataDir, volume being where the data volume is
// mounted, and returns 0. Otherwise it writes the error to stderr and
// returns 1.
func prepareDataDir(stderr io.Writer, volume, dataDir, username string) int {
owner, err := user.Lookup(username)
if err != nil {
_, _ = fmt.Fprintln(stderr, err)
return 1
}
err = reportbuf.PrepareDataDir(volume, dataDir, owner)
if err != nil {
_, _ = fmt.Fprintf(stderr, "DATA_DIR '%s': %v\n", dataDir, err)
return 1
}
return 0
}
// RunServer runs the server until it is told to stop, with appname and
// version as the name and version it logs and reports. If the server
// fails to start, to listen or to stop, fx's Run exits the process
// with status 1 itself.
func RunServer(appname, version string) {
globals.Appname = appname
globals.Version = version
fx.New(
// fx logs each step of starting and stopping through the
// server's own logger, so off a terminal those lines are
// JSON like every other line.
fx.WithLogger(func(log *logger.Logger) fxevent.Logger {
return &fxevent.SlogLogger{Logger: log.Get()}
}),
fx.Provide(
config.New,
globals.New,
handlers.New,
healthcheck.New,
logger.New,
middleware.New,
reportbuf.New,
server.New,
),
fx.Invoke(
// First, so the name and version are logged even when
// a setting stops the start.
func(log *logger.Logger) { log.Identify() },
func(*server.Server) {},
),
).Run()
}
internal/cli/cli_test.go
-219
View File
@@ -1,219 +0,0 @@
package cli_test
import (
"bytes"
"os"
"os/user"
"path/filepath"
"strconv"
"strings"
"testing"
"sneak.berlin/go/netwatch/internal/cli"
"sneak.berlin/go/netwatch/internal/reportbuf"
)
// TestMainRunsCheckCIDR: Main given check-cidr returns 0, writing
// nothing, for a CIDR the server takes in its TRUSTED_PROXIES, and 1,
// with an error naming TRUSTED_PROXIES and the CIDR, for one it
// refuses, and does not start the server.
func TestMainRunsCheckCIDR(t *testing.T) {
t.Parallel()
var stderr bytes.Buffer
code := cli.Main(&stderr, "netwatch", "test",
[]string{"check-cidr", "10.0.0.0/8"}, failIfServerStarts(t))
if code != 0 || stderr.Len() != 0 {
t.Errorf("check-cidr 10.0.0.0/8: exit %d, stderr %q; want exit 0 and no output",
code, stderr.String())
}
stderr.Reset()
code = cli.Main(&stderr, "netwatch", "test",
[]string{"check-cidr", "1.2.3/32"}, failIfServerStarts(t))
want := `TRUSTED_PROXIES "1.2.3/32": `
if code != 1 || !strings.HasPrefix(stderr.String(), want) {
t.Errorf("check-cidr 1.2.3/32: exit %d, stderr %q; want exit 1 and %q...",
code, stderr.String(), want)
}
}
// TestMainRunsPrepareDataDir: Main given prepare-data-dir runs the
// prepare-data-dir subcommand for the netwatch user, and does not start
// the server. The test image has no netwatch user, so that subcommand
// exits 1 with the error from looking the user up;
// TestPrepareDataDirRefusesPathOutsideVolume checks the path.
func TestMainRunsPrepareDataDir(t *testing.T) {
t.Parallel()
var stderr bytes.Buffer
code := cli.Main(&stderr, "netwatch", "test",
[]string{"prepare-data-dir", "/etc"}, failIfServerStarts(t))
want := user.UnknownUserError("netwatch").Error() + "\n"
if code != 1 || stderr.String() != want {
t.Errorf("prepare-data-dir /etc: exit %d, stderr %q; want exit 1 and %q",
code, stderr.String(), want)
}
}
// TestMainRunsServerWithNoArguments: Main given no arguments starts the
// server with the name and version it was given, writes nothing and
// returns 0.
func TestMainRunsServerWithNoArguments(t *testing.T) {
t.Parallel()
var (
stderr bytes.Buffer
gotAppname, gotVersion string
)
code := cli.Main(&stderr, "netwatch", "test", []string{},
func(appname, version string) {
gotAppname, gotVersion = appname, version
})
if code != 0 || stderr.Len() != 0 {
t.Errorf("exit %d, stderr %q; want exit 0 and no output",
code, stderr.String())
}
if gotAppname != "netwatch" || gotVersion != "test" {
t.Errorf("server started with %q %q; want %q %q",
gotAppname, gotVersion, "netwatch", "test")
}
}
// TestMainRefusesOtherCommandLines: Main given a subcommand with too
// few or too many values, or a misspelt subcommand, writes the usage
// message to stderr, returns 2 and does not start the server.
func TestMainRefusesOtherCommandLines(t *testing.T) {
t.Parallel()
want := "usage: netwatch-server " +
"[check-cidr CIDR | prepare-data-dir DATA_DIR]\n"
for _, commandLine := range []string{
"netwatch-server check-cidr",
"netwatch-server check-cidr 192.0.2.0/24 198.51.100.0/24",
"netwatch-server prepare-data-dir",
"netwatch-server prepare-data-dir /data/reports /data/other",
"netwatch-server check-cdir 192.0.2.0/24",
} {
var stderr bytes.Buffer
// Main takes the command line after the program's name.
args := strings.Fields(commandLine)[1:]
code := cli.Main(&stderr, "netwatch", "test", args, failIfServerStarts(t))
if code != 2 || stderr.String() != want {
t.Errorf("%q: exit %d, stderr %q; want exit 2 and %q",
commandLine, code, stderr.String(), want)
}
}
}
// TestCheckCIDRTakesCIDR: check-cidr exits 0, writing nothing, for a
// CIDR the server takes in its TRUSTED_PROXIES.
func TestCheckCIDRTakesCIDR(t *testing.T) {
t.Parallel()
for _, cidr := range []string{"10.0.0.0/8", "192.0.2.1/32", "2001:db8::/32"} {
var stderr bytes.Buffer
code := cli.CheckCIDR(&stderr, cidr)
if code != 0 || stderr.Len() != 0 {
t.Errorf("%q: exit %d, stderr %q; want exit 0 and no output",
cidr, code, stderr.String())
}
}
}
// TestCheckCIDRRefusesOtherInput: check-cidr exits 1, with an error
// naming TRUSTED_PROXIES and the input, for anything the server would
// refuse in its TRUSTED_PROXIES, such as 1.2.3/32, which nginx would
// look up as a hostname.
func TestCheckCIDRRefusesOtherInput(t *testing.T) {
t.Parallel()
for _, cidr := range []string{
"1.2.3/32", "example.com/32", "10.0.0.0/33", "10.0.0.1", "",
} {
var stderr bytes.Buffer
code := cli.CheckCIDR(&stderr, cidr)
want := "TRUSTED_PROXIES " + strconv.Quote(cidr) + ": "
if code != 1 || !strings.HasPrefix(stderr.String(), want) {
t.Errorf("%q: exit %d, stderr %q; want exit 1 and %q...",
cidr, code, stderr.String(), want)
}
}
}
// TestPrepareDataDirTakesPathInVolume: prepare-data-dir exits 0,
// writing nothing, for a DATA_DIR below the volume, and creates it.
func TestPrepareDataDirTakesPathInVolume(t *testing.T) {
t.Parallel()
volume := t.TempDir()
dataDir := filepath.Join(volume, "reports")
var stderr bytes.Buffer
code := cli.PrepareDataDir(&stderr, volume, dataDir, currentUsername(t))
if code != 0 || stderr.Len() != 0 {
t.Errorf("exit %d, stderr %q; want exit 0 and no output",
code, stderr.String())
}
info, err := os.Stat(dataDir)
if err != nil || !info.IsDir() {
t.Errorf("DATA_DIR not created: %v", err)
}
}
// TestPrepareDataDirRefusesPathOutsideVolume: prepare-data-dir exits
// 1, with an error naming DATA_DIR and its value, for a DATA_DIR
// outside the volume.
func TestPrepareDataDirRefusesPathOutsideVolume(t *testing.T) {
t.Parallel()
volume := t.TempDir()
var stderr bytes.Buffer
code := cli.PrepareDataDir(&stderr, volume, "/etc", currentUsername(t))
want := "DATA_DIR '/etc': " + reportbuf.ErrDataDirOutsideVolume.Error() + "\n"
if code != 1 || stderr.String() != want {
t.Errorf("exit %d, stderr %q; want exit 1 and %q",
code, stderr.String(), want)
}
}
// currentUsername is the name of the user the test runs as, the only
// owner a test not run as root can give files to.
func currentUsername(t *testing.T) string {
t.Helper()
current, err := user.Current()
if err != nil {
t.Fatal(err)
}
return current.Username
}
// failIfServerStarts is what the tests give Main in place of
// cli.RunServer: it fails the test instead of starting the server.
func failIfServerStarts(t *testing.T) func(appname, version string) {
t.Helper()
return func(string, string) {
t.Error("Main started the server")
}
}
internal/cli/export_test.go
-16
View File
@@ -1,16 +0,0 @@
package cli
import "io"
// CheckCIDR exposes the check-cidr subcommand to the external tests,
// which read what it writes to stderr.
func CheckCIDR(stderr io.Writer, cidr string) int {
return checkCIDR(stderr, cidr)
}
// PrepareDataDir exposes the prepare-data-dir subcommand to the
// external tests, which give it a volume and a user of their own in
// place of /data and netwatch.
func PrepareDataDir(stderr io.Writer, volume, dataDir, username string) int {
return prepareDataDir(stderr, volume, dataDir, username)
}
internal/config/config_test.go
-245
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@@ -1,245 +0,0 @@
package config_test
import (
"os"
"slices"
"strings"
"testing"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/logger"
"go.uber.org/fx"
)
// requireConfigError builds the config as cli.RunServer does and fails
// the test unless that fails with an error naming setting. It uses
// fx.New, because fxtest.New fails the test itself on an error.
func requireConfigError(t *testing.T, setting string) {
t.Helper()
app := fx.New(
fx.NopLogger,
fx.Provide(globals.New, logger.New, config.New),
fx.Invoke(func(*config.Config) {}),
)
err := app.Err()
if err == nil || !strings.Contains(err.Error(), setting) {
t.Fatalf("config error = %v, want one naming %s", err, setting)
}
}
// requireTrustedProxies builds the config as cli.RunServer does and
// fails the test unless its TrustedProxies are want.
func requireTrustedProxies(t *testing.T, want []string) {
t.Helper()
var cfg *config.Config
app := fx.New(
fx.NopLogger,
fx.Provide(globals.New, logger.New, config.New),
fx.Populate(&cfg),
)
err := app.Err()
if err != nil {
t.Fatalf("config error = %v", err)
}
if !slices.Equal(cfg.TrustedProxies, want) {
t.Fatalf("TrustedProxies = %q, want %q", cfg.TrustedProxies, want)
}
}
// TestTrustedProxiesUnsetTrustsRFC1918: unset, the server trusts the
// RFC 1918 ranges and nothing else, loopback included.
func TestTrustedProxiesUnsetTrustsRFC1918(t *testing.T) {
// t.Setenv first, so the variable is put back as it was after the
// test.
t.Setenv("TRUSTED_PROXIES", "")
err := os.Unsetenv("TRUSTED_PROXIES")
if err != nil {
t.Fatal(err)
}
requireTrustedProxies(t,
[]string{"10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16"})
}
// TestTrustedProxiesEmptyTrustsNothing: set and empty, the server
// trusts no proxy. viper alone would read the empty variable as unset
// and give the default.
func TestTrustedProxiesEmptyTrustsNothing(t *testing.T) {
t.Setenv("TRUSTED_PROXIES", "")
requireTrustedProxies(t, []string{})
}
// TestTrustedProxiesListReplacesDefault: a list is used as given, with
// none of the default ranges added.
func TestTrustedProxiesListReplacesDefault(t *testing.T) {
t.Setenv("TRUSTED_PROXIES", "172.17.0.1/32, 2001:db8::/32")
requireTrustedProxies(t, []string{"172.17.0.1/32", "2001:db8::/32"})
}
// TestSettingsLoadAsGiven: valid values pass the checks and are used
// as given. bin/entrypoint.sh starts the server with these
// BIND_ADDRESS and PORT values.
func TestSettingsLoadAsGiven(t *testing.T) {
t.Setenv("BIND_ADDRESS", "127.0.0.1")
t.Setenv("PORT", "8081")
t.Setenv("DEBUG", "true")
var cfg *config.Config
app := fx.New(
fx.NopLogger,
fx.Provide(globals.New, logger.New, config.New),
fx.Populate(&cfg),
)
err := app.Err()
if err != nil {
t.Fatalf("config error = %v", err)
}
if cfg.BindAddress != "127.0.0.1" || cfg.Port != 8081 || !cfg.Debug {
t.Fatalf("BindAddress, Port, Debug = %q, %d, %t; "+
"want \"127.0.0.1\", 8081, true",
cfg.BindAddress, cfg.Port, cfg.Debug)
}
}
// TestPortMustBeAPortNumber: viper reads a value that is not a number
// as 0, on which the server would listen on a random port.
func TestPortMustBeAPortNumber(t *testing.T) {
for _, value := range []string{"abc", "0", "65536", "8080.5"} {
t.Run(value, func(t *testing.T) {
t.Setenv("PORT", value)
requireConfigError(t, "PORT")
})
}
}
// TestDebugIsOnForAnyNonEmptyValue: unset or empty, debug logging is
// off; any other value turns it on, "false" and "0" included, and none
// stops the start.
func TestDebugIsOnForAnyNonEmptyValue(t *testing.T) {
for _, tc := range []struct {
name string
value string
unset bool
want bool
}{
{name: "unset", unset: true, want: false},
{name: "empty", value: "", want: false},
{name: "false", value: "false", want: true},
{name: "0", value: "0", want: true},
{name: "yes", value: "yes", want: true},
} {
t.Run(tc.name, func(t *testing.T) {
// t.Setenv first, so the variable is put back as it was
// after the test.
t.Setenv("DEBUG", tc.value)
if tc.unset {
err := os.Unsetenv("DEBUG")
if err != nil {
t.Fatal(err)
}
}
var cfg *config.Config
app := fx.New(
fx.NopLogger,
fx.Provide(globals.New, logger.New, config.New),
fx.Populate(&cfg),
)
err := app.Err()
if err != nil {
t.Fatalf("config error = %v", err)
}
if cfg.Debug != tc.want {
t.Fatalf("Debug = %t, want %t", cfg.Debug, tc.want)
}
})
}
}
// TestBindAddressMustBeAnIPAddress: a host name would be looked up
// only once the server starts listening, and a mistyped one would stop
// it then with an error that does not name the setting.
func TestBindAddressMustBeAnIPAddress(t *testing.T) {
t.Setenv("BIND_ADDRESS", "localhost")
requireConfigError(t, "BIND_ADDRESS")
}
// TestReportsPerMinuteMustBePositive: unchecked, zero would panic
// when the routes are built, and a negative rate would lift the
// limit.
func TestReportsPerMinuteMustBePositive(t *testing.T) {
t.Setenv("REPORTS_PER_MINUTE", "0")
requireConfigError(t, "REPORTS_PER_MINUTE")
}
// TestDataDirMaxBytesMustBeANumber: viper reads a value that is not
// a number, such as "1GB", as 0, which would refuse every report.
func TestDataDirMaxBytesMustBeANumber(t *testing.T) {
t.Setenv("DATA_DIR_MAX_BYTES", "1GB")
requireConfigError(t, "DATA_DIR_MAX_BYTES")
}
// TestMetricsCredentialsGoTogether: with only one of the two set, the
// server would quietly serve no metrics, so the start fails, naming
// both.
func TestMetricsCredentialsGoTogether(t *testing.T) {
for _, set := range []string{"METRICS_USERNAME", "METRICS_PASSWORD"} {
t.Run(set, func(t *testing.T) {
t.Setenv("METRICS_USERNAME", "")
t.Setenv("METRICS_PASSWORD", "")
t.Setenv(set, "prometheus")
requireConfigError(t, "METRICS_USERNAME")
requireConfigError(t, "METRICS_PASSWORD")
})
}
}
// TestMetricsUsernameMustNotContainColon: basic auth splits the
// credentials at the first ":", so such a user name would get 401 on
// every request to /metrics.
func TestMetricsUsernameMustNotContainColon(t *testing.T) {
t.Setenv("METRICS_USERNAME", "prom:etheus")
t.Setenv("METRICS_PASSWORD", "secret")
requireConfigError(t, "METRICS_USERNAME")
}
// TestCORSAllowedOriginsMustBeOrigins: "*" would let every origin in,
// and an entry that is not a plain origin would match no page.
func TestCORSAllowedOriginsMustBeOrigins(t *testing.T) {
for _, entry := range []string{
"*",
"https://*.netwatch.example",
"netwatch.example",
"https://netwatch.example/",
} {
t.Run(entry, func(t *testing.T) {
t.Setenv("CORS_ALLOWED_ORIGINS", entry)
requireConfigError(t, "CORS_ALLOWED_ORIGINS")
})
}
}
internal/handlers/healthcheck.go
-19
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@@ -1,19 +0,0 @@
package handlers
import "net/http"
// HandleHealthCheck returns a handler for the health check
// endpoint. It answers 200 while the status is "ok" and 503 otherwise,
// so that the image's HEALTHCHECK fails.
func (s *Handlers) HandleHealthCheck() http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
resp := s.hc.Healthcheck()
code := http.StatusOK
if resp.Status != "ok" {
code = http.StatusServiceUnavailable
}
s.respondJSON(w, r, resp, code)
}
}
internal/reportbuf/datadir_linux.go
-65
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@@ -1,65 +0,0 @@
//go:build linux
package reportbuf
import (
"io/fs"
"log/slog"
"os"
"syscall"
"golang.org/x/sys/unix"
)
// chownFile gives name, a file inside root that is not a directory, to
// uid and gid if it is a regular file or symbolic link with one name.
// It leaves, and logs, a file of any kind with a second name (hard
// link): all the names of a file share its owner, and the other could
// be outside root. It leaves any other file with one name, such as a
// device, named pipe or socket: the server needs to own none of them.
// It opens name through root with O_PATH, which reads nothing from the
// file, so opening a device or named pipe neither waits nor acts on
// it; os.Root adds O_NOFOLLOW, and the two together open a symbolic
// link itself, never what it points to. It reads the kind of file and
// its number of names from the open file and gives that file to them,
// so a hard link swapped in at name is caught too.
//
// This file is built only on Linux: prepare-data-dir runs only in the
// Linux image, and macOS, where the backend is also built for
// development, has neither O_PATH nor AT_EMPTY_PATH. On any other
// system chownFile returns an error (see datadir_other.go).
func chownFile(root *os.Root, name string, uid, gid int) error {
file, err := root.OpenFile(name, unix.O_PATH, 0)
if err != nil {
return err
}
defer func() { _ = file.Close() }()
info, err := file.Stat()
if err != nil {
return err
}
stat, ok := info.Sys().(*syscall.Stat_t)
if !ok || stat.Nlink > 1 {
slog.Warn("owner not changed: file has a second name (hard link)",
"path", file.Name())
return nil
}
if !info.Mode().IsRegular() && info.Mode().Type() != fs.ModeSymlink {
return nil
}
// File.Chown would fail: fchown refuses a file opened with O_PATH.
// Fchownat with an empty name and AT_EMPTY_PATH acts on the open
// file instead.
err = unix.Fchownat(int(file.Fd()), "", uid, gid, unix.AT_EMPTY_PATH)
if err != nil {
return &fs.PathError{Op: "chown", Path: file.Name(), Err: err}
}
return nil
}
internal/reportbuf/datadir_other.go
-21
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@@ -1,21 +0,0 @@
//go:build !linux
package reportbuf
import (
"errors"
"io/fs"
"os"
)
// chownFile returns an error on every system but Linux. Opening a file
// that is not a directory without reading it or following it, and
// giving it to a user on the open file, never by name, is built only
// for Linux (see datadir_linux.go): prepare-data-dir runs only in the
// Linux image, and macOS, where the backend is also built for
// development, has neither O_PATH nor AT_EMPTY_PATH. This file lets
// the package build elsewhere, such as on macOS, where a developer
// runs make build and make run.
func chownFile(_ *os.Root, name string, _, _ int) error {
return &fs.PathError{Op: "chown", Path: name, Err: errors.ErrUnsupported}
}
internal/reportbuf/reportbuf_test.go
-1597
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File diff suppressed because it is too large Load Diff
internal/server/export_test.go
-23
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@@ -1,23 +0,0 @@
package server
import "github.com/go-chi/chi/v5"
// Router exposes the router to the external tests, which add routes
// of their own to it after SetupRoutes.
func (s *Server) Router() *chi.Mux {
return s.router
}
// MaxRequestBodyBytes exposes the router-wide body limit to the
// external tests.
const MaxRequestBodyBytes = maxRequestBodyBytes
// MetricsRequestsPerMinute exposes the /metrics rate limit to the
// external tests.
const MetricsRequestsPerMinute = metricsRequestsPerMinute
// ListenAddr exposes the address the server listens on to the
// external tests.
func (s *Server) ListenAddr() string {
return s.newHTTPServer().Addr
}
internal/server/routes.go
-90
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@@ -1,90 +0,0 @@
package server
import (
"time"
sentryhttp "github.com/getsentry/sentry-go/http"
"github.com/go-chi/chi/v5"
"github.com/go-chi/chi/v5/middleware"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/collectors"
"github.com/prometheus/client_golang/prometheus/promhttp"
)
const (
requestTimeout = 60 * time.Second
// maxRequestBodyBytes caps every request body. A route group
// can mount s.mw.MaxBodyBytes with a smaller value to lower
// its bound, but cannot raise it: this cap runs first.
maxRequestBodyBytes int64 = 1 << 20 // 1 MiB
// metricsRequestsPerMinute is how many requests to /metrics each
// client address may make a minute, whatever their credentials. A
// scraper polling every 2 seconds sends half of it, which httprate
// never refuses.
metricsRequestsPerMinute = 60
)
// SetupRoutes configures the chi router with middleware and
// all application routes.
func (s *Server) SetupRoutes() {
s.router = chi.NewRouter()
s.router.Use(s.mw.Recoverer())
s.router.Use(middleware.RequestID)
s.router.Use(s.mw.Logging())
// s.mw.Recoverer would write a panic's 500 only after the panic has
// passed the request log, so it is written here, where the log sees it.
s.router.Use(s.mw.Write500OnPanic())
s.router.Use(s.mw.SecurityHeaders())
s.router.Use(s.mw.CORS(s.params.Config.CORSAllowedOrigins))
s.router.Use(s.mw.MaxBodyBytes(maxRequestBodyBytes))
s.router.Use(middleware.Timeout(requestTimeout))
// Sentry reports a panic, then panics again, so that it still
// reaches s.mw.Recoverer.
if s.params.Config.SentryDSN != "" {
s.router.Use(sentryhttp.New(sentryhttp.Options{Repanic: true}).Handle)
}
// The metrics go in a registry of this server's own, not in
// Prometheus' default one, which takes them only once per process.
registry := prometheus.NewRegistry()
registry.MustRegister(
collectors.NewGoCollector(),
collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}),
)
// Requests are measured only once chi has matched them to one of
// these routes, by path and method. The metrics are labelled with
// both, which any client can make up, so measuring every request
// would let clients add labels without bound. A Route here would
// be matched by its path prefix alone, so each path is given in
// full.
s.router.Group(func(r chi.Router) {
// config.New refuses one of the two credentials without the
// other.
if s.params.Config.MetricsUsername != "" {
r.Use(s.mw.Metrics(registry))
// Likewise inside the metrics.
r.Use(s.mw.Write500OnPanic())
}
r.Get("/.well-known/healthcheck", s.h.HandleHealthCheck())
r.With(s.mw.RateLimit(s.params.Config.ReportsPerMinute)).
Post("/api/v1/reports", s.h.HandleReport())
})
// The rate limit comes before the basic auth, so a client past it
// gets 429 and its password is not checked.
if s.params.Config.MetricsUsername != "" {
s.router.With(
s.mw.RateLimit(metricsRequestsPerMinute),
s.mw.MetricsAuth(),
).Get("/metrics", promhttp.HandlerFor(
registry, promhttp.HandlerOpts{},
).ServeHTTP)
}
}
internal/server/routes_test.go
-343
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@@ -1,343 +0,0 @@
package server_test
import (
"io"
"net/http"
"net/http/httptest"
"strings"
"testing"
"time"
"sneak.berlin/go/netwatch/internal/config"
"sneak.berlin/go/netwatch/internal/globals"
"sneak.berlin/go/netwatch/internal/handlers"
"sneak.berlin/go/netwatch/internal/healthcheck"
"sneak.berlin/go/netwatch/internal/logger"
"sneak.berlin/go/netwatch/internal/middleware"
"sneak.berlin/go/netwatch/internal/reportbuf"
"sneak.berlin/go/netwatch/internal/server"
"github.com/getsentry/sentry-go"
"go.uber.org/fx"
"go.uber.org/fx/fxtest"
)
// newServer builds a Server from the same constructors as
// cli.RunServer, configured from the environment. It is never started,
// so nothing listens.
func newServer(t *testing.T) *server.Server {
t.Helper()
var srv *server.Server
app := fxtest.New(t,
fx.Provide(
config.New,
globals.New,
handlers.New,
healthcheck.New,
logger.New,
middleware.New,
reportbuf.New,
server.New,
),
fx.Populate(&srv),
)
err := app.Err()
if err != nil {
t.Fatalf("build server: %v", err)
}
return srv
}
// TestReportsAreRateLimited checks that POST /api/v1/reports is
// behind the per-address rate limit, set here to two a minute.
func TestReportsAreRateLimited(t *testing.T) {
t.Setenv("REPORTS_PER_MINUTE", "2")
srv := newServer(t)
srv.SetupRoutes()
post := func() int {
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodPost, "/api/v1/reports",
strings.NewReader(`{"clientId":"c1","hosts":[]}`),
)
req.Header.Set("Content-Type", "application/json")
srv.ServeHTTP(rec, req)
return rec.Code
}
for i := range 2 {
if code := post(); code != http.StatusOK {
t.Fatalf("report %d: status = %d, want %d",
i+1, code, http.StatusOK)
}
}
if code := post(); code != http.StatusTooManyRequests {
t.Fatalf("third report in a minute: status = %d, want %d",
code, http.StatusTooManyRequests)
}
}
// TestCORSAllowedOriginsReachTheRouter checks that an origin listed in
// CORS_ALLOWED_ORIGINS is allowed by the router, not only when handed
// to the CORS middleware directly.
func TestCORSAllowedOriginsReachTheRouter(t *testing.T) {
const origin = "https://netwatch.example:8443"
t.Setenv("CORS_ALLOWED_ORIGINS", origin)
srv := newServer(t)
srv.SetupRoutes()
// The preflight a browser sends before it POSTs JSON from origin.
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodOptions, "/api/v1/reports", http.NoBody)
req.Header.Set("Origin", origin)
req.Header.Set("Access-Control-Request-Method", http.MethodPost)
req.Header.Set("Access-Control-Request-Headers", "content-type")
srv.ServeHTTP(rec, req)
got := rec.Header().Get("Access-Control-Allow-Origin")
if got != origin {
t.Fatalf("Access-Control-Allow-Origin = %q, want %q", got, origin)
}
}
// TestNoMetricsWithoutCredentials: with neither metrics setting set,
// there is no /metrics.
func TestNoMetricsWithoutCredentials(t *testing.T) {
t.Setenv("METRICS_USERNAME", "")
t.Setenv("METRICS_PASSWORD", "")
srv := newServer(t)
srv.SetupRoutes()
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodGet, "/metrics", http.NoBody)
srv.ServeHTTP(rec, req)
if rec.Code != http.StatusNotFound {
t.Fatalf("status = %d, want %d", rec.Code, http.StatusNotFound)
}
}
// TestMetricsBehindBasicAuth: with both metrics settings set, /metrics
// answers only with them as basic auth credentials, and shows a
// request to a route but not one to a path no route has.
func TestMetricsBehindBasicAuth(t *testing.T) {
t.Setenv("METRICS_USERNAME", "prometheus")
t.Setenv("METRICS_PASSWORD", "right")
srv := newServer(t)
srv.SetupRoutes()
get := func(path, username, password string) *httptest.ResponseRecorder {
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodGet, path, http.NoBody)
if username != "" {
req.SetBasicAuth(username, password)
}
srv.ServeHTTP(rec, req)
return rec
}
get("/.well-known/healthcheck", "", "")
get("/api/v1/no-such-route", "", "")
for _, creds := range [][2]string{
{"", ""},
{"prometheus", "wrong"},
{"someone", "right"},
} {
rec := get("/metrics", creds[0], creds[1])
if rec.Code != http.StatusUnauthorized {
t.Errorf("credentials %q: status = %d, want %d",
creds, rec.Code, http.StatusUnauthorized)
}
}
rec := get("/metrics", "prometheus", "right")
if rec.Code != http.StatusOK {
t.Fatalf("right credentials: status = %d, want %d",
rec.Code, http.StatusOK)
}
body := rec.Body.String()
if !strings.Contains(body, `handler="/.well-known/healthcheck"`) {
t.Errorf("metrics show no health check request:\n%s", body)
}
if strings.Contains(body, "no-such-route") {
t.Errorf("metrics show a request to a path no route has:\n%s", body)
}
if !strings.Contains(body, "go_goroutines") {
t.Errorf("metrics show no Go runtime metrics:\n%s", body)
}
}
// TestMetricsAreRateLimited: a client that has used up its /metrics
// allowance on wrong passwords gets 429 even with the right one, which
// is then not checked, while another client behind the same nginx
// still gets in.
func TestMetricsAreRateLimited(t *testing.T) {
t.Setenv("METRICS_USERNAME", "prometheus")
t.Setenv("METRICS_PASSWORD", "right")
// As in the container: nginx connects from loopback and names the
// client in X-Forwarded-For.
t.Setenv("TRUSTED_PROXIES", "127.0.0.1/32")
srv := newServer(t)
srv.SetupRoutes()
get := func(client, password string) int {
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodGet, "/metrics", http.NoBody)
req.RemoteAddr = "127.0.0.1:40000"
req.Header.Set("X-Forwarded-For", client)
req.SetBasicAuth("prometheus", password)
srv.ServeHTTP(rec, req)
return rec.Code
}
for i := range server.MetricsRequestsPerMinute {
if code := get("203.0.113.7", "wrong"); code != http.StatusUnauthorized {
t.Fatalf("guess %d: status = %d, want %d",
i+1, code, http.StatusUnauthorized)
}
}
if code := get("203.0.113.7", "right"); code != http.StatusTooManyRequests {
t.Fatalf("right password past the limit: status = %d, want %d",
code, http.StatusTooManyRequests)
}
if code := get("203.0.113.8", "right"); code != http.StatusOK {
t.Fatalf("another client: status = %d, want %d",
code, http.StatusOK)
}
}
// TestMetricsInTwoServers: two servers in one process can both have
// metrics on.
func TestMetricsInTwoServers(t *testing.T) {
t.Setenv("METRICS_USERNAME", "prometheus")
t.Setenv("METRICS_PASSWORD", "right")
for range 2 {
newServer(t).SetupRoutes()
}
}
// TestSentry: with SENTRY_DSN empty there is no Sentry client. With it
// pointing at a local server standing in for Sentry, a panic in a
// handler reaches that server, and the request still gets the 500 from
// the panic recovery.
func TestSentry(t *testing.T) {
const panicMessage = "handler panic for TestSentry"
// sentry.Init sets the client for the whole process; take it away
// again so that no other test reports to Sentry.
t.Cleanup(func() { sentry.CurrentHub().BindClient(nil) })
t.Setenv("SENTRY_DSN", "")
newServer(t)
if sentry.CurrentHub().Client() != nil {
t.Fatal("a Sentry client exists with SENTRY_DSN empty")
}
// The body of the first request the stand-in for Sentry receives.
received := make(chan string, 1)
sentryServer := httptest.NewServer(http.HandlerFunc(
func(_ http.ResponseWriter, r *http.Request) {
body, _ := io.ReadAll(r.Body)
select {
case received <- string(body):
default:
}
},
))
defer sentryServer.Close()
t.Setenv("SENTRY_DSN",
"http://key@"+sentryServer.Listener.Addr().String()+"/1")
srv := newServer(t)
srv.SetupRoutes()
srv.Router().Get("/panic", func(http.ResponseWriter, *http.Request) {
panic(panicMessage)
})
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodGet, "/panic", http.NoBody)
srv.ServeHTTP(rec, req)
if rec.Code != http.StatusInternalServerError {
t.Fatalf("status = %d, want %d",
rec.Code, http.StatusInternalServerError)
}
// Sentry sends from a goroutine of its own.
select {
case body := <-received:
if !strings.Contains(body, panicMessage) {
t.Fatalf("the Sentry server received no report of the panic:\n%s",
body)
}
case <-time.After(5 * time.Second):
t.Fatal("nothing reached the Sentry server")
}
}
// TestHealthCheckRejectsOversizeBody sends the health check, which
// never reads its body, a body one byte over the limit. Only the
// router-wide body limit can reject it.
func TestHealthCheckRejectsOversizeBody(t *testing.T) {
t.Parallel()
srv := newServer(t)
srv.SetupRoutes()
rec := httptest.NewRecorder()
req := httptest.NewRequestWithContext(t.Context(),
http.MethodGet, "/.well-known/healthcheck",
strings.NewReader(
strings.Repeat("x", int(server.MaxRequestBodyBytes)+1),
),
)
srv.ServeHTTP(rec, req)
if rec.Code != http.StatusRequestEntityTooLarge {
t.Fatalf("status = %d, want %d",
rec.Code, http.StatusRequestEntityTooLarge)
}
if got := rec.Body.String(); got != "{\"status\":\"error\"}\n" {
t.Errorf("body = %q, want %q", got, "{\"status\":\"error\"}\n")
}
got := rec.Header().Get("Content-Type")
if got != "application/json; charset=utf-8" {
t.Errorf("Content-Type = %q, want a JSON content type", got)
}
}
configs/nginx.conf → nginx.conf
+5 -19
View File
@@ -18,10 +18,9 @@ server {
# The client address comes from X-Forwarded-For only on a request
# from the reverse proxies in TRUSTED_PROXIES: bin/entrypoint.sh
# writes one set_real_ip_from line for each into this file. Unset,
# TRUSTED_PROXIES is the three private ranges of RFC 1918; set and
# empty, the file is empty and the client address is the one each
# request comes from.
# writes one set_real_ip_from line for each into this file, and
# leaves it empty when TRUSTED_PROXIES is unset, so that by default
# the client address is the one each request comes from.
include /etc/nginx/trusted-proxies.conf;
real_ip_header X-Forwarded-For;
real_ip_recursive on;
@@ -30,13 +29,8 @@ server {
access_log /dev/stdout combined;
error_log /dev/stderr warn;
# With no-cache, a browser never uses a copy of the page that names
# assets a newer build no longer has without first checking with the
# server that it is current.
location / {
try_files $uri $uri/ /index.html;
add_header Cache-Control no-cache;
include /etc/nginx/security-headers.conf;
}
# Cache static assets aggressively
@@ -51,9 +45,7 @@ server {
# 127.0.0.1:8081. These headers go with every request passed to it.
# X-Forwarded-For carries only the client address, as resolved by
# the real IP settings above, and not the chain the request came
# with. bin/entrypoint.sh starts the backend with
# TRUSTED_PROXIES=127.0.0.1/32, the address nginx connects from, so
# the backend takes that one entry as the client address.
# with: the backend takes the first entry, which a client can write.
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
@@ -61,7 +53,7 @@ server {
# netwatch-server sets the same security headers on its own
# responses. Its copies are dropped so that each header goes out
# once, as configs/security-headers.conf sets it.
# once, as security-headers.conf sets it.
proxy_hide_header Strict-Transport-Security;
proxy_hide_header Content-Security-Policy;
proxy_hide_header X-Frame-Options;
@@ -76,10 +68,4 @@ server {
location = /.well-known/healthcheck {
proxy_pass http://127.0.0.1:8081;
}
# The backend's Prometheus metrics, behind its own basic auth. Unless
# METRICS_USERNAME and METRICS_PASSWORD are set, it answers 404.
location = /metrics {
proxy_pass http://127.0.0.1:8081;
}
}
package.json
+1 -1
View File
@@ -1,6 +1,6 @@
{
"name": "netwatch",
"private": true,
"version": "1.0.0",
"description": "Real-time network latency monitor SPA",
"type": "module",
"scripts": {
script/add-dependency
-30
View File
@@ -1,30 +0,0 @@
#!/bin/sh
# script/add-dependency: add a frontend package, or move one to another
# version, with yarn add, which changes package.json and yarn.lock
# together; then install from yarn.lock with --frozen-lockfile, as
# script/bootstrap does, to show it installs as written. --dev because
# no frontend package is needed when the page runs: it ships as the
# built dist/.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
usage() {
echo "usage: make add-dependency PACKAGE=<name>@<version>" >&2
exit 2
}
main() {
# Exactly one package. A value beginning with - would reach yarn as
# an option; yarn would quietly drop all but the first of several
# packages given in one value.
[ "$#" -eq 1 ] || usage
case "$1" in
"" | -* | *[[:space:]]*) usage ;;
esac
cd "$ROOT"
"$ROOT/script/yarn" add --dev "$1"
"$ROOT/script/yarn" install --frozen-lockfile
}
main "$@"
script/bootstrap
+32 -85
View File
@@ -3,29 +3,25 @@
# this repo. Idempotent: every install is guarded by a check so already
# installed tools are skipped. Base tooling comes from nix, apt, brew,
# or apk (detected in that order); assumes nothing is present. Node is
# used directly only if it has the major version of NODE_VERSION and is
# at least NODE_MIN_VERSION; otherwise NODE_VERSION is installed via nvm
# (installing nvm itself first, from a hash-verified release archive,
# never curl | sh). Yarn is used directly only if it is exactly
# YARN_VERSION; otherwise that version is prepared through corepack,
# or installed with npm where there is no corepack.
# Go, with its gofmt, is used directly only if it is exactly GO_VERSION;
# otherwise that release is installed from its hash-verified archive.
# used directly if it is at least NODE_MIN_VERSION; otherwise it is
# installed at a pinned version via nvm (installing nvm itself first,
# from a hash-verified release archive, never curl | sh). Go, with its
# gofmt, is used directly if it is at least the version backend/go.mod
# asks for; otherwise the pinned Go release is installed from its
# hash-verified archive.
#
# What this script installs outside the system package manager lives
# under $HOME and is linked into ~/.local/bin, where make and the git
# hook find it once that directory is on PATH. Nothing in ~/.local/bin
# that this script did not create is ever replaced.
#
# golangci-lint is not installed: make lint runs it in Docker, as make
# test runs the tests, and this script does not install Docker either.
#
# Unlike the org model: Go for the backend, a newer node for eslint.
# golangci-lint is not installed: make lint runs it in Docker, which
# this script does not install either.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
# Pinned versions, 2026-07-06
# Pinned versions, 2026-07-07
NODE_VERSION="22.17.0"
# The oldest node the frontend's dependencies accept: the "engines"
# field of eslint 10.12.0, the most demanding of them, asks for 22.13.0
@@ -145,63 +141,32 @@ ensure_nvm() {
rm -rf "$tmp"
}
# node_ok: the node on PATH has the major version of NODE_VERSION and is
# at least NODE_MIN_VERSION. Only the major is compared with the pin,
# as REPO_POLICIES.md asks. node itself compares the versions: major,
# then minor, then patch. A node that fails does not pass.
# script/bootstrap and script/yarn carry this function unchanged.
# node_ok: the node on PATH is at least NODE_MIN_VERSION. node itself
# compares the two: major, then minor, then patch.
node_ok() {
if ! command -v node >/dev/null 2>&1; then return 1; fi
if missing node; then return 1; fi
node -e '
const have = process.versions.node.split(".").map(Number);
const want = process.argv[1].split(".").map(Number);
const pinned = process.argv[2].split(".").map(Number);
if (have[0] !== pinned[0]) process.exit(1);
for (let i = 0; i < 3; i++) {
if (have[i] !== want[i]) process.exit(have[i] > want[i] ? 0 : 1);
}
' "$NODE_MIN_VERSION" "$NODE_VERSION"
' "$NODE_MIN_VERSION"
}
# ensure_node: unless node_ok, install NODE_VERSION and link its node.
# Afterwards node is looked up through PATH again and must pass node_ok.
ensure_node() {
if node_ok; then
echo "bootstrap: using node $(node --version)"
return 0
fi
if node_ok; then return 0; fi
ensure_nvm
nvm_sh "nvm install $NODE_VERSION"
link_bin "$HOME/.nvm/versions/node/v$NODE_VERSION/bin/node" node
hash -r
if ! node_ok; then
echo "bootstrap: after installing node $NODE_VERSION through nvm," >&2
echo " the node on PATH, $(command -v node), is not it" >&2
exit 1
fi
echo "bootstrap: installed node $(node --version)"
}
# yarn_ok: yarn --version on PATH prints exactly YARN_VERSION, compared
# over the whole version. A yarn that fails or prints anything else does
# not pass.
yarn_ok() {
if missing yarn; then return 1; fi
version="$(yarn --version 2>/dev/null)" || return 1
[ "$version" = "$YARN_VERSION" ]
}
# ensure_yarn: unless yarn_ok, prepare YARN_VERSION and link its yarn.
# corepack writes its shims (pnpm and yarnpkg as well as yarn) into
# $TOOLCHAIN rather than next to itself, and the npm fallback installs
# there too; only yarn is linked. Afterwards yarn is looked up through
# PATH again and must pass yarn_ok, so another yarn that hides the link
# stops bootstrap.
# ensure_yarn: corepack writes its shims (pnpm and yarnpkg as well as
# yarn) into $TOOLCHAIN rather than next to itself, and the npm fallback
# installs there too; only yarn is linked.
ensure_yarn() {
if yarn_ok; then
echo "bootstrap: using yarn $(yarn --version)"
return 0
fi
if ! missing yarn; then return 0; fi
shims="$TOOLCHAIN/corepack-shims"
mkdir -p "$shims"
if ! missing corepack; then
@@ -216,40 +181,23 @@ ensure_yarn() {
shims="$TOOLCHAIN/npm-global/bin"
fi
link_bin "$shims/yarn" yarn
hash -r
if ! yarn_ok; then
echo "bootstrap: after installing yarn $YARN_VERSION in $shims," >&2
echo " the yarn on PATH, $(command -v yarn), does not report it" >&2
exit 1
fi
echo "bootstrap: installed yarn $(yarn --version)"
}
# go_ok: the go on PATH has its gofmt beside it (a Go release ships the
# two together) and go version reports exactly GO_VERSION, compared over
# the whole version, not a prefix of it. A go that fails or prints
# anything else does not pass. GOTOOLCHAIN=local makes go report itself
# rather than a toolchain it would fetch.
# two together) and is at least the version backend/go.mod asks for.
# GOTOOLCHAIN=local makes an older go fail here instead of fetching a
# newer toolchain for itself.
go_ok() {
if missing go; then return 1; fi
[ -x "$(dirname "$(command -v go)")/gofmt" ] || return 1
version="$(GOTOOLCHAIN=local go version 2>/dev/null)" || return 1
case "$version" in
"go version go$GO_VERSION "*) return 0 ;;
*) return 1 ;;
esac
(cd "$ROOT/backend" && GOTOOLCHAIN=local go list -m >/dev/null 2>&1)
}
# ensure_go: unless go_ok, install GO_VERSION and link its go and gofmt.
# They are linked on every run that needs them, so a deleted link is put
# back, and the archive is unpacked again if either binary is missing.
# Afterwards go is looked up through PATH again and must pass go_ok, so
# another go that hides the link stops bootstrap.
ensure_go() {
if go_ok; then
echo "bootstrap: using $(GOTOOLCHAIN=local go version)"
return 0
fi
if go_ok; then return 0; fi
go_dir="$TOOLCHAIN/go-$GO_VERSION"
if [ ! -x "$go_dir/bin/go" ] || [ ! -x "$go_dir/bin/gofmt" ]; then
# sha256 of each archive, from https://go.dev/dl/?mode=json
@@ -290,13 +238,6 @@ ensure_go() {
fi
link_bin "$go_dir/bin/go" go
link_bin "$go_dir/bin/gofmt" gofmt
hash -r
if ! go_ok; then
echo "bootstrap: after installing go $GO_VERSION in $go_dir," >&2
echo " the go on PATH, $(command -v go), is not it or has no gofmt" >&2
exit 1
fi
echo "bootstrap: installed $(GOTOOLCHAIN=local go version)"
}
main() {
@@ -313,17 +254,23 @@ main() {
if missing make; then pkg_install gnumake make make make; fi
if missing git; then pkg_install git git git git; fi
# The race detector in make test needs cgo, which Go turns on only
# when it finds its C compiler, gcc on Linux. apt and apk ship the C
# library headers apart from gcc.
if missing gcc; then
pkg_install gcc "gcc libc6-dev" gcc "gcc musl-dev"
fi
ensure_node
ensure_yarn
yarn install --frozen-lockfile
ensure_go
go mod download
(cd "$ROOT/backend" && go mod download)
if missing docker; then
echo "bootstrap: docker not found; make test and make lint, and so" >&2
echo " make check and the pre-commit hook, need it" >&2
echo "bootstrap: docker not found; make lint, and so make check" >&2
echo " and the pre-commit hook, need it to run the linters" >&2
fi
if [ -n "$path_hint" ] && [ -d "$BIN_DIR" ]; then
echo "bootstrap: add $BIN_DIR to the front of your PATH, e.g." >&2
script/build
-23
View File
@@ -1,23 +0,0 @@
#!/bin/sh
# script/build: build the frontend for production into dist/, then the
# static netwatch-server binary into the repo root, with its version
# stamped in.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
"$ROOT/script/yarn" build
# VERSION comes from the environment. Unset or empty, it is
# `git describe --tags --always --dirty`, as in script/docker, or
# "dev" where there is no git or no repository history.
version="${VERSION:-$(git describe --tags --always --dirty 2>/dev/null || echo dev)}"
CGO_ENABLED=0 go build -trimpath \
-ldflags "-s -w -X main.Version=$version" \
-o netwatch-server ./cmd/netwatch-server/
}
main "$@"
script/check
+1 -3
View File
@@ -1,8 +1,6 @@
#!/bin/sh
# script/check: run all checks (test, lint, fmt-check). Our own
# extension to scripts-to-rule-them-all. test and lint are Docker
# phases; fmt-check is native, because a formatter writes the working
# tree. Must not modify any files.
# extension to scripts-to-rule-them-all. Must not modify any files.
set -eu
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
script/cibuild
+9 -14
View File
@@ -2,12 +2,9 @@
# script/cibuild: run the CI build. It bootstraps first: a CI runner
# checks out and runs this and nothing else, and script/fmt-check runs
# the formatter on the host, which a pristine checkout cannot do.
# A new CACHEBUST value reruns every RUN step after the ARG CACHEBUST
# line, since a cached gate phase is a check that did not run; unlike
# --no-cache, it keeps the layers above that line and the cache mounts.
# This relies on every stage of the Dockerfile declaring ARG CACHEBUST
# before every step that lints, tests or compiles; a stage without that
# line is served from cache on an unchanged tree, with no warning.
# --no-cache for the same reason as script/docker: the gate phases the
# final stage depends on are RUN steps, and a cached one is a check that
# did not run.
set -eu
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
@@ -17,17 +14,15 @@ main() {
cd "$ROOT"
"$SCRIPT_DIR/bootstrap"
"$SCRIPT_DIR/check"
# The version and the tag each get their own line: a failing
# command substitution inside an argument does not trip `set -e`,
# so the inline form degrades silently to an empty constant. The
# VERSION build argument takes precedence over the version a build
# stage derives from the .git in the context.
# Own line: a failing command substitution inside an argument does
# not trip `set -e`, so the inline form degrades silently to an
# empty constant. The VERSION build argument takes precedence over
# the version a build stage derives from the .git in the context.
version="$(git describe --tags --always --dirty 2>/dev/null || true)"
[ -n "$version" ] || version="unknown"
tag="$("$SCRIPT_DIR/projectname")"
docker build --build-arg CACHEBUST="$(date +%s)-$$" \
docker build --no-cache \
--build-arg VERSION="$version" \
-t "$tag" .
-t "$("$SCRIPT_DIR/projectname")" .
}
main "$@"
script/clean
-13
View File
@@ -1,13 +0,0 @@
#!/bin/sh
# script/clean: remove what script/build writes: dist/ and the
# netwatch-server binary.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
rm -rf dist netwatch-server
}
main "$@"
script/dev
-13
View File
@@ -1,13 +0,0 @@
#!/bin/sh
# script/dev: run the frontend's Vite dev server. It proxies /api to a
# netwatch-server running locally (see vite.config.js).
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
"$ROOT/script/yarn" dev
}
main "$@"
script/docker
+8 -14
View File
@@ -1,12 +1,8 @@
#!/bin/sh
# script/docker: build the Docker image tagged with the project name.
# Identical in all repos; the tag comes from script/projectname.
# A new CACHEBUST value reruns every RUN step after the ARG CACHEBUST
# line, since a cached gate phase is a check that did not run; unlike
# --no-cache, it keeps the layers above that line and the cache mounts.
# This relies on every stage of the Dockerfile declaring ARG CACHEBUST
# before every step that lints, tests or compiles; a stage without that
# line is served from cache on an unchanged tree, with no warning.
# --no-cache because the gate phases the final stage depends on are RUN
# steps, and a cached one is a check that did not run.
set -eu
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
@@ -14,17 +10,15 @@ ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
main() {
cd "$ROOT"
# The version and the tag each get their own line: a failing
# command substitution inside an argument does not trip `set -e`,
# so the inline form degrades silently to an empty constant. The
# VERSION build argument takes precedence over the version a build
# stage derives from the .git in the context.
# Own line: a failing command substitution inside an argument does
# not trip `set -e`, so the inline form degrades silently to an
# empty constant. The VERSION build argument takes precedence over
# the version a build stage derives from the .git in the context.
version="$(git describe --tags --always --dirty 2>/dev/null || true)"
[ -n "$version" ] || version="unknown"
tag="$("$SCRIPT_DIR/projectname")"
docker build --build-arg CACHEBUST="$(date +%s)-$$" \
docker build --no-cache \
--build-arg VERSION="$version" \
-t "$tag" .
-t "$("$SCRIPT_DIR/projectname")" .
}
main "$@"
script/fmt
+3 -9
View File
@@ -1,20 +1,14 @@
#!/bin/sh
# script/fmt: format the whole repo (writes): prettier over the
# JavaScript, CSS, HTML and Markdown, then gofmt over the Go sources in
# cmd/ and internal/; not over the whole root, as node_modules/ holds
# .go files of its own. The org model formats only markdown; this repo
# also has JS and Go.
# script/fmt: format the whole repo (writes): prettier over everything
# it understands, then gofmt over the Go backend.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
# script/bootstrap links the node, yarn and gofmt it installs into
# ~/.local/bin, which the shell that called it may not have on PATH.
PATH="$HOME/.local/bin:$PATH"
"$ROOT/script/frontend-fmt"
gofmt -l -w cmd internal
"$ROOT/backend/script/fmt"
}
main "$@"
script/fmt-check
+1 -10
View File
@@ -1,23 +1,14 @@
#!/bin/sh
# script/fmt-check: check formatting across the whole repo (read-only).
# Same scope as script/fmt, but fails instead of writing.
# The org model checks only markdown; this repo also has JS and Go.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
# script/bootstrap links the node, yarn and gofmt it installs into
# ~/.local/bin, which the shell that called it may not have on PATH.
PATH="$HOME/.local/bin:$PATH"
"$ROOT/script/frontend-fmt-check"
unformatted="$(gofmt -l cmd internal)"
if [ -n "$unformatted" ]; then
echo "Go files not formatted:" >&2
echo "$unformatted" >&2
exit 1
fi
"$ROOT/backend/script/fmt-check"
}
main "$@"
script/frontend-check
Executable
+18
View File
@@ -0,0 +1,18 @@
#!/bin/sh
# script/frontend-check: run the frontend tests and format check only.
# This exists for the frontend stage of Dockerfile, a node image with
# neither Go nor Docker; the Dockerfile's frontend-lint stage runs the
# frontend linter, and its lint and builder stages gate the backend.
# Everywhere else, use script/check, which covers the whole repo. Must
# not modify any files.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
"$ROOT/script/frontend-test"
"$ROOT/script/frontend-fmt-check"
}
main "$@"
script/frontend-fmt
+4 -6
View File
@@ -1,16 +1,14 @@
#!/bin/sh
# script/frontend-fmt: format the JavaScript, CSS, HTML and Markdown,
# repo-wide (writes). Those are the languages REPO_POLICIES.md gives
# prettier; the YAML is left alone, as .golangci.yml must stay the org
# standard byte for byte. Prettier does not read Go; script/fmt runs
# gofmt over the Go sources.
# script/frontend-fmt: format the frontend and every other file prettier
# understands, repo-wide (writes). backend/ is in .prettierignore; Go
# sources are formatted by backend/script/fmt.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
"$ROOT/script/yarn" prettier --write '**/*.{js,css,html,md}'
yarn prettier --write .
}
main "$@"
script/frontend-fmt-check
+1 -1
View File
@@ -7,7 +7,7 @@ ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
"$ROOT/script/yarn" prettier --check '**/*.{js,css,html,md}'
yarn prettier --check .
}
main "$@"
script/frontend-lint
Executable
+15
View File
@@ -0,0 +1,15 @@
#!/bin/sh
# script/frontend-lint: run eslint over the frontend. This runs inside
# the frontend-lint stage of Dockerfile, the digest-pinned node image
# with the packages from yarn.lock. From a checkout, run `make lint`,
# which builds that stage.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
yarn eslint .
}
main "$@"
script/frontend-test
+8 -12
View File
@@ -1,11 +1,9 @@
#!/bin/sh
# script/frontend-test: run the frontend test suite on the host: the
# unit tests in test/unit/, through the test script in package.json,
# then the production build, which fails on broken code. make test runs
# the same tests in the frontend-test stage of Dockerfile, and the image
# build runs the production build in its frontend-build stage. The tests
# print a dot each; if any fails, they run again with every test listed,
# and the script fails even if that run passes. NODE_OPTIONS chooses the
# script/frontend-test: run the frontend test suite: the unit tests in
# test/unit/, through the test script in package.json, then the
# production build, which fails on broken code. The tests print a dot
# each; if any fails, they run again with every test listed, and the
# script fails even if that run passes. NODE_OPTIONS chooses the
# reporter because yarn adds its arguments after the test files, where
# node would take a reporter option for one more file.
set -eu
@@ -14,14 +12,12 @@ ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
NODE_OPTIONS=--test-reporter=dot \
timeout 90 "$ROOT/script/yarn" --silent run test || {
NODE_OPTIONS=--test-reporter=dot timeout 30 yarn --silent run test || {
echo "--- Rerunning with every test listed for details ---"
NODE_OPTIONS=--test-reporter=spec \
timeout 90 "$ROOT/script/yarn" --silent run test
NODE_OPTIONS=--test-reporter=spec timeout 30 yarn --silent run test
exit 1
}
timeout 30 "$ROOT/script/yarn" build
timeout 30 yarn build
}
main "$@"
script/frontend-viewport-test
+9 -37
View File
@@ -2,13 +2,11 @@
# script/frontend-viewport-test: verify the responsive layout of the built
# frontend in a real browser engine.
#
# Builds dist/, serves it with the same nginx image and the same
# configs/nginx.conf the shipping container uses, points a containerised
# headless Chrome at it over CDP, and asserts on computed layout at every
# viewport width derived from the app's own CSS. See
# test/viewport/README.md for what this covers and what it cannot.
# Before the browser starts, it checks that the page is served with
# Cache-Control: no-cache and Content-Security-Policy.
# Builds dist/, serves it with the same nginx image and the same nginx.conf
# the shipping container uses, points a containerised headless Chrome at it
# over CDP, and asserts on computed layout at every viewport width derived
# from the app's own CSS. See test/viewport/README.md for what this covers
# and what it cannot.
#
# Deliberately not part of script/check: it needs Docker and takes far
# longer than the 20s budget make test has to stay inside.
@@ -63,46 +61,20 @@ main() {
# host.
docker network create --internal "$NETWORK" > /dev/null
# configs/nginx.conf is a template: the image renders it over its own
# nginx.conf is a template: the image renders it over its own
# default.conf, with the same port and limit bin/entrypoint.sh uses.
# The empty file it includes trusts no proxy, as bin/entrypoint.sh
# writes it when TRUSTED_PROXIES is set and empty. It also includes
# writes it when TRUSTED_PROXIES is unset. nginx.conf also includes
# the security headers, so the page runs under the shipped policy.
docker run -d --rm --name "$SERVER" \
--network "$NETWORK" --network-alias netwatch \
-e PORT=8080 -e NGINX_ENVSUBST_FILTER='^PORT$' \
-v "$ROOT/dist:/usr/share/nginx/html:ro" \
-v "$ROOT/configs/nginx.conf:/etc/nginx/templates/default.conf.template:ro" \
-v "$ROOT/nginx.conf:/etc/nginx/templates/default.conf.template:ro" \
-v /dev/null:/etc/nginx/trusted-proxies.conf:ro \
-v "$ROOT/configs/security-headers.conf:/etc/nginx/security-headers.conf:ro" \
-v "$ROOT/security-headers.conf:/etc/nginx/security-headers.conf:ro" \
"$SERVER_IMAGE" > /dev/null
# The page, and /no-such-page, which location / answers with the
# page through its try_files fallback, must go out with
# Cache-Control: no-cache. That add_header in its location drops the
# server's own unless the location includes the security headers
# again; only Content-Security-Policy is checked, as it comes from
# the same file as the rest. curl tries up to ten more times, a
# second apart, while nginx starts. It runs without -S, which would
# print an error for every failed attempt, even when a later one
# succeeds.
for path in / /no-such-page; do
if ! headers="$(docker exec "$SERVER" curl -s -o /dev/null -D - \
--retry 10 --retry-connrefused --retry-delay 1 \
"http://127.0.0.1:8080$path")"; then
echo "frontend-viewport-test: nginx did not answer $path" >&2
exit 1
fi
headers="$(printf '%s\n' "$headers" | tr -d '\r')"
if ! printf '%s\n' "$headers" | grep -qix 'Cache-Control: no-cache' ||
! printf '%s\n' "$headers" | grep -qi '^Content-Security-Policy:'; then
echo "frontend-viewport-test: $path needs" \
"Cache-Control: no-cache and Content-Security-Policy; got:" >&2
printf '%s\n' "$headers" >&2
exit 1
fi
done
# The image's own entrypoint already exposes CDP on 9222 and passes
# --no-sandbox, so only extra flags belong here; re-specifying the
# debugging port collides with it and leaves the endpoint bound to
script/install-precommit
+2 -2
View File
@@ -8,8 +8,8 @@ ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
hook=".git/hooks/pre-commit"
printf '#!/bin/sh\nset -e\nscript/precommit\n' > .git/hooks/pre-commit
chmod +x .git/hooks/pre-commit
printf '#!/bin/sh\nset -e\nscript/precommit\n' > "$hook"
chmod +x "$hook"
echo "pre-commit hook installed: runs script/precommit"
}
script/lint
+12 -17
View File
@@ -1,27 +1,22 @@
#!/bin/sh
# script/lint: run the linter. Linting is a phase of the Dockerfile and
# this builds that phase alone; the linter is never installed or run on
# a developer host, where a shared result cache and a host-global lock
# make its answer untrustworthy.
# script/lint: lint the whole repo: eslint over the frontend, then the Go
# linter over backend/.
#
# The phase is not the last stage in the file, so it is built only when
# --target names it. A new CACHEBUST value reruns every RUN step after
# the ARG CACHEBUST line, since a cached lint layer is a lint that did
# not run; unlike --no-cache, it keeps the layers above that line and
# the cache mounts. This relies on every stage of the Dockerfile
# declaring ARG CACHEBUST before every step that lints, tests or
# compiles; a stage without that line is served from cache on an
# unchanged tree, with no warning.
# --output type=cacheonly writes no image, since nothing uses one.
# No linter runs on the host: this builds the frontend-lint and lint
# stages of Dockerfile, the digest-pinned node and golangci-lint images.
# The first runs eslint; the second runs the backend's fmt-check and
# lint targets. --no-cache makes each linter really run every time
# rather than reuse an earlier result, and each stage is built for its
# checks alone, so no image is kept.
set -eu
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
docker build --build-arg CACHEBUST="$(date +%s)-$$" \
--target lint \
timeout 300 docker build --no-cache --target frontend-lint \
--output type=cacheonly .
timeout 300 docker build --no-cache --target lint \
--output type=cacheonly .
}
script/test
+8 -15
View File
@@ -1,24 +1,17 @@
#!/bin/sh
# script/test: run the test suite. Testing is a phase of the Dockerfile
# and this builds that phase alone, on the same terms as script/lint:
# --target because a phase that is not the last stage is built only when
# named, and a new CACHEBUST value because a cached test layer is a test
# that did not run; unlike --no-cache, it keeps the layers above the ARG
# CACHEBUST line and the cache mounts. This relies on every stage of the
# Dockerfile declaring ARG CACHEBUST before every step that lints, tests
# or compiles; a stage without that line is served from cache on an
# unchanged tree, with no warning. --output type=cacheonly writes no
# image, since nothing uses one.
# script/test: run the test suite for the whole repo: the frontend at
# the repo root, then the Go backend in backend/. Each half has its own
# 30-second limit, and there is none around both: from a cold Go build
# cache, compiling the backend's tests with the race detector can take
# 30 seconds on its own, and Go's -timeout leaves the compile out.
set -eu
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd -P)"
ROOT="$(cd "$SCRIPT_DIR/.." && pwd -P)"
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
docker build --build-arg CACHEBUST="$(date +%s)-$$" \
--target test \
--output type=cacheonly .
script/frontend-test
backend/script/test
}
main "$@"
script/tidy
-13
View File
@@ -1,13 +0,0 @@
#!/bin/sh
# script/tidy: run go mod tidy, which adds the modules the Go sources
# import, drops those they no longer do, and updates go.sum.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
main() {
cd "$ROOT"
go mod tidy
}
main "$@"
script/yarn
-55
View File
@@ -1,55 +0,0 @@
#!/bin/sh
# script/yarn: run yarn with the given arguments under the node
# script/bootstrap would use. Every script that runs yarn on the host
# runs it through this one, except script/bootstrap, which picks its
# own node and yarn.
set -eu
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
# Must match the pins in script/bootstrap.
NODE_VERSION="22.17.0"
NODE_MIN_VERSION="22.13.0"
# node_ok: the node on PATH has the major version of NODE_VERSION and is
# at least NODE_MIN_VERSION. Only the major is compared with the pin,
# as REPO_POLICIES.md asks. node itself compares the versions: major,
# then minor, then patch. A node that fails does not pass.
# script/bootstrap and script/yarn carry this function unchanged.
node_ok() {
if ! command -v node >/dev/null 2>&1; then return 1; fi
node -e '
const have = process.versions.node.split(".").map(Number);
const want = process.argv[1].split(".").map(Number);
const pinned = process.argv[2].split(".").map(Number);
if (have[0] !== pinned[0]) process.exit(1);
for (let i = 0; i < 3; i++) {
if (have[i] !== want[i]) process.exit(have[i] > want[i] ? 0 : 1);
}
' "$NODE_MIN_VERSION" "$NODE_VERSION"
}
# Run the yarn script/bootstrap installed: the yarn on PATH when the
# node on PATH passes node_ok, and otherwise yarn under the pinned node
# in nvm. nvm is a bash script, hence the subshell.
run_yarn() {
if node_ok && command -v yarn >/dev/null 2>&1; then
exec yarn "$@"
fi
if node_ok || [ ! -s "$HOME/.nvm/nvm.sh" ]; then
echo "script/yarn: no yarn; run script/bootstrap first" >&2
exit 1
fi
exec bash -c '. "$HOME/.nvm/nvm.sh" && nvm use "$1" >/dev/null &&
shift && exec yarn "$@"' bash "$NODE_VERSION" "$@"
}
main() {
cd "$ROOT"
# script/bootstrap links the node and yarn it installs into
# ~/.local/bin, which the shell that called it may not have on PATH.
PATH="$HOME/.local/bin:$PATH"
run_yarn "$@"
}
main "$@"
configs/security-headers.conf → security-headers.conf
+6 -6
View File
@@ -1,5 +1,5 @@
# The security headers REPO_POLICIES.md requires on every response.
# configs/nginx.conf includes this file, which Dockerfile copies to
# nginx.conf includes this file, which Dockerfile copies to
# /etc/nginx/security-headers.conf. always sends each header on error
# responses too.
@@ -8,11 +8,11 @@ add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" alway
# Scripts and styles load only from the page's own origin. Inline ones
# are blocked, style attributes in markup included, so style elements
# through classes or element.style. data: images are for the favicon
# in web/index.html. connect-src is * because the browser checks each
# probe in web/src/main.js against it, and also every redirect the probe
# follows, and several of those hosts redirect to others; a list of
# hosts here would block those probes. It also covers the reports the
# page sends to its own origin.
# in index.html. connect-src is * because the browser checks each probe in
# src/main.js against it, and also every redirect the probe follows,
# and several of those hosts redirect to others; a list of hosts here
# would block those probes. It also covers the reports the page sends
# to its own origin.
add_header Content-Security-Policy "default-src 'self'; connect-src *; img-src 'self' data:; object-src 'none'; base-uri 'none'; form-action 'none'; frame-ancestors 'none'" always;
add_header X-Frame-Options DENY always;
web/src/main.js → src/main.js
+155 -299
View File
@@ -8,8 +8,6 @@
// display their real value in the latency figure. The history buffer holds
// maxHistoryPoints samples (historyDuration / updateInterval).
// reportInterval is how often collected samples are POSTed to the backend.
// The interval menu changes updateInterval while the page runs; the
// getters compute their values from it each time they are read.
export const CONFIG = {
updateInterval: 3000,
maxHistoryPoints: 100,
@@ -30,39 +28,6 @@ export const CONFIG = {
return [0, 1, 2, 3, 4, 5].map((i) => Math.round((d * i) / 5));
},
canvasHeight: 96,
// A latency figure and its sparkline take the color of the first entry
// whose limit, in ms, the latency is below.
latencyColors: [
{ below: 50, hex: "#22c55e", className: "text-green-500" },
{ below: 100, hex: "#84cc16", className: "text-lime-500" },
{ below: 200, hex: "#eab308", className: "text-yellow-500" },
{ below: 500, hex: "#f97316", className: "text-orange-500" },
{ below: Infinity, hex: "#ef4444", className: "text-red-500" },
],
// The health is offline when more than offlineTimeouts WAN hosts timed
// out or were unreachable and at most offlineReachable answered;
// otherwise degraded when more than degradedTimeouts timed out or were
// unreachable; otherwise slow when more than slowHosts answered after
// more than slowLatency ms.
offlineTimeouts: 10,
offlineReachable: 4,
degradedTimeouts: 4,
slowHosts: 3,
slowLatency: 1000,
// The debug log keeps its last maxLogEntries lines.
maxLogEntries: 1000,
// A gateway candidate that has not answered after gatewayTimeout ms is
// passed over.
gatewayTimeout: 1500,
// When no WAN host answers, the recovery probe checks recoveryProbeHosts
// random ones every recoveryProbeInterval ms.
recoveryProbeHosts: 4,
recoveryProbeInterval: 500,
// The rows are sorted after the first round that is not discarded, then
// every roundsPerSort rounds.
roundsPerSort: 10,
// The sparklines are sized and drawn again resizeDelay ms after start.
resizeDelay: 100,
};
// WAN endpoints to monitor. These are used for the aggregate health/stats
@@ -144,15 +109,12 @@ const WAN_HOSTS = [
const debugLog = [];
export const log = (() => {
const log = (() => {
function append(level, message) {
const entry = { timestamp: new Date(), level, message };
debugLog.push(entry);
if (debugLog.length > CONFIG.maxLogEntries)
debugLog.splice(0, debugLog.length - CONFIG.maxLogEntries);
debugLog.push({ timestamp: new Date(), level, message });
if (debugLog.length > 1000) debugLog.splice(0, debugLog.length - 1000);
const panel = document.getElementById("debug-panel");
if (panel && !panel.classList.contains("hidden"))
appendDebugLogLine(entry);
if (panel && !panel.classList.contains("hidden")) renderDebugLog();
}
return {
error: (msg) => append("error", msg),
@@ -210,10 +172,7 @@ async function detectGateway() {
const result = await Promise.any(
GATEWAY_CANDIDATES.map(async (url) => {
const controller = new AbortController();
const timeoutId = setTimeout(
() => controller.abort(),
CONFIG.gatewayTimeout,
);
const timeoutId = setTimeout(() => controller.abort(), 1500);
try {
await fetch(url, {
method: "GET",
@@ -238,52 +197,14 @@ async function detectGateway() {
// --- App State ---------------------------------------------------------------
// The min, max, median and average of latencies, a list of numbers, or all
// null when it is empty. The median of an even count is the mean of the
// middle two; it and the average are rounded.
function latencyStats(latencies) {
if (latencies.length === 0)
return { min: null, max: null, med: null, avg: null };
const sorted = [...latencies].sort((a, b) => a - b);
const mid = Math.floor(sorted.length / 2);
return {
min: sorted[0],
max: sorted[sorted.length - 1],
med:
sorted.length % 2
? sorted[mid]
: Math.round((sorted[mid - 1] + sorted[mid]) / 2),
avg: Math.round(
latencies.reduce((a, b) => a + b, 0) / latencies.length,
),
};
}
// The status a check's error gives its host: "error" for a timeout,
// "offline" for any other error, and "online" for none.
function statusFromError(error) {
if (error === "timeout") return "error";
if (error) return "offline";
return "online";
}
export class HostState {
constructor(host, pinned = false) {
this.name = host.name;
this.url = host.url;
// Each entry is either a check's result, { timestamp, latency,
// error }, or a round skipped while paused, { timestamp,
// latency: null, paused: true }.
this.history = [];
// The last 100 (CONFIG.maxHistoryPoints) entries the interval menu
// has cleared from the history, which the reporter may not have
// sent yet.
this.clearedHistory = [];
this.history = []; // { timestamp, latency, paused }
this.lastLatency = null;
this.status = "pending"; // 'online' | 'offline' | 'error' | 'pending'
this.pinned = pinned;
// How many recorded checks in a row have failed, up to the last one.
this.consecutiveFailures = 0;
}
pushSample(timestamp, result) {
@@ -294,10 +215,9 @@ export class HostState {
});
this._trim();
this.lastLatency = result.latency;
this.status = statusFromError(result.error);
this.consecutiveFailures = result.error
? this.consecutiveFailures + 1
: 0;
if (result.error === "timeout") this.status = "error";
else if (result.error) this.status = "offline";
else this.status = "online";
}
pushPaused(timestamp) {
@@ -305,26 +225,36 @@ export class HostState {
this._trim();
}
// What the interval menu does to each host: the history starts over and
// the host waits for its next check. The history's entries move to
// clearedHistory, so the reporter still sends those it has not.
reset() {
this.clearedHistory = [...this.clearedHistory, ...this.history].slice(
-CONFIG.maxHistoryPoints,
averageLatency() {
const valid = this.history.filter((p) => p.latency !== null);
if (valid.length === 0) return null;
return Math.round(
valid.reduce((s, p) => s + p.latency, 0) / valid.length,
);
this.history = [];
this.lastLatency = null;
this.status = "pending";
}
// The min, max, median and average latency of the checks in the history
// that got an answer.
historyStats() {
return latencyStats(
this.history
.filter((p) => p.latency !== null)
.map((p) => p.latency),
);
minLatency() {
const valid = this.history.filter((p) => p.latency !== null);
if (valid.length === 0) return null;
return Math.min(...valid.map((p) => p.latency));
}
maxLatency() {
const valid = this.history.filter((p) => p.latency !== null);
if (valid.length === 0) return null;
return Math.max(...valid.map((p) => p.latency));
}
medianLatency() {
const sorted = this.history
.filter((p) => p.latency !== null)
.map((p) => p.latency)
.sort((a, b) => a - b);
if (sorted.length === 0) return null;
const mid = Math.floor(sorted.length / 2);
return sorted.length % 2
? sorted[mid]
: Math.round((sorted[mid - 1] + sorted[mid]) / 2);
}
_trim() {
@@ -341,10 +271,6 @@ export class AppState {
this.local = localHosts.map((h) => new HostState(h));
this.paused = false;
this.tickCount = 0;
// The recovery probe's timer, null while it is not running, and the
// checks it started last.
this._recoveryProbeId = null;
this._recoveryProbeChecks = null;
}
get allHosts() {
@@ -353,13 +279,33 @@ export class AppState {
/** WAN-only stats from latest sample (excludes local) */
wanStats() {
const latencies = this.wan
.filter((h) => h.lastLatency !== null)
.map((h) => h.lastLatency);
const reachable = this.wan.filter((h) => h.lastLatency !== null);
const latencies = reachable.map((h) => h.lastLatency);
const total = this.wan.length;
if (latencies.length === 0)
return {
reachable: 0,
total,
min: null,
max: null,
med: null,
avg: null,
};
const sorted = [...latencies].sort((a, b) => a - b);
const mid = Math.floor(sorted.length / 2);
const med =
sorted.length % 2
? sorted[mid]
: Math.round((sorted[mid - 1] + sorted[mid]) / 2);
return {
reachable: latencies.length,
total: this.wan.length,
...latencyStats(latencies),
total,
min: Math.min(...latencies),
max: Math.max(...latencies),
med,
avg: Math.round(
latencies.reduce((a, b) => a + b, 0) / latencies.length,
),
};
}
@@ -385,16 +331,12 @@ export class AppState {
const timeouts = this.wan.filter(
(h) => h.status === "error" || h.status === "offline",
).length;
if (
timeouts > CONFIG.offlineTimeouts &&
reachable <= CONFIG.offlineReachable
)
return "offline";
if (timeouts > CONFIG.degradedTimeouts) return "degraded";
if (timeouts > 10 && reachable <= 4) return "offline";
if (timeouts > 4) return "degraded";
const slow = this.wan.filter(
(h) => h.lastLatency !== null && h.lastLatency > CONFIG.slowLatency,
(h) => h.lastLatency !== null && h.lastLatency > 1000,
).length;
if (slow > CONFIG.slowHosts) return "slow";
if (slow > 3) return "slow";
return "healthy";
}
@@ -453,12 +395,9 @@ function getClientId() {
// Build the delta report body the backend decodes, plus the new per-host
// high-water marks. Pure function of the passed state: `hosts` is an array
// of { name, url, status, clearedHistory, history }, `since` maps a host url
// to the Unix-ms timestamp of the last sample already reported for it, and
// `now` is a Date. Only non-paused samples newer than the mark are included,
// from clearedHistory as well as history. A host whose status is pending,
// as the interval menu leaves it until its next check, is sent with the
// status of its last check, which is the last sample sent. Returns null
// of { name, url, status, history }, `since` maps a host url to the Unix-ms
// timestamp of the last sample already reported for it, and `now` is a Date.
// Only non-paused samples newer than the mark are included. Returns null
// when no host has an unreported sample.
export function buildReport(hosts, clientId, now, since) {
const reportHosts = [];
@@ -467,7 +406,7 @@ export function buildReport(hosts, clientId, now, since) {
const mark = since.get(host.url) ?? 0;
const samples = [];
let high = mark;
for (const p of [...host.clearedHistory, ...host.history]) {
for (const p of host.history) {
if (p.paused) continue;
if (p.timestamp <= mark) continue;
samples.push({
@@ -481,10 +420,7 @@ export function buildReport(hosts, clientId, now, since) {
reportHosts.push({
name: host.name,
url: host.url,
status:
host.status === "pending"
? statusFromError(samples.at(-1).error)
: host.status,
status: host.status,
history: samples,
});
marks.set(host.url, high);
@@ -511,7 +447,7 @@ export function buildReport(hosts, clientId, now, since) {
// Only one report is ever in flight, and it is abandoned after half the
// interval, so a slow POST can neither overlap the next report (which would
// carry the same samples) nor stall reporting for good.
export class Reporter {
class Reporter {
constructor(state, clientId, intervalMs) {
this.state = state;
this.clientId = clientId;
@@ -569,13 +505,7 @@ export class Reporter {
// Checks one target. The check times out after CONFIG.requestTimeout; the
// caller can give it up sooner through the optional signal, which also ends
// it as a timeout. A failed check's reason says what went wrong and after
// how long; a check that answered has none.
//
// The URL is fetched as written, with nothing added to it: the Hetzner
// speed-test servers close the connection without an answer when the URL
// has a query string, and cache: "no-store" keeps the browser's cache out
// of the measurement.
// it as a timeout.
export async function measureLatency(url, signal) {
const controller = new AbortController();
const timeoutId = setTimeout(
@@ -584,10 +514,13 @@ export async function measureLatency(url, signal) {
);
signal?.addEventListener("abort", () => controller.abort());
const targetUrl = new URL(url);
targetUrl.searchParams.set("_cb", Date.now().toString());
const start = performance.now();
try {
await fetch(url, {
await fetch(targetUrl.toString(), {
method: "GET",
mode: "no-cors",
cache: "no-store",
@@ -596,28 +529,18 @@ export async function measureLatency(url, signal) {
const latency = Math.round(performance.now() - start);
clearTimeout(timeoutId);
if (latency > CONFIG.maxLatency) {
return {
latency: null,
error: "timeout",
reason: `answered after ${latency} ms, over the ${CONFIG.maxLatency} ms limit`,
};
log.error(`${url} timeout (${latency}ms > ${CONFIG.maxLatency}ms)`);
return { latency: null, error: "timeout" };
}
return { latency, error: null, reason: null };
return { latency, error: null };
} catch (err) {
const took = Math.round(performance.now() - start);
clearTimeout(timeoutId);
if (err.name === "AbortError") {
return {
latency: null,
error: "timeout",
reason: `timed out after ${took} ms (limit ${CONFIG.requestTimeout} ms)`,
};
log.error(`${url} timeout (aborted)`);
return { latency: null, error: "timeout" };
}
return {
latency: null,
error: "unreachable",
reason: `network error (${err.name}: ${err.message}) after ${took} ms`,
};
log.error(`${url} unreachable`);
return { latency: null, error: "unreachable" };
}
}
@@ -625,13 +548,21 @@ export async function measureLatency(url, signal) {
export function latencyHex(latency) {
if (latency === null) return "#6b7280";
return CONFIG.latencyColors.find((c) => latency < c.below).hex;
if (latency < 50) return "#22c55e";
if (latency < 100) return "#84cc16";
if (latency < 200) return "#eab308";
if (latency < 500) return "#f97316";
return "#ef4444";
}
export function latencyClass(latency, status) {
if (status === "offline" || status === "error" || latency === null)
return "text-gray-500";
return CONFIG.latencyColors.find((c) => latency < c.below).className;
if (latency < 50) return "text-green-500";
if (latency < 100) return "text-lime-500";
if (latency < 200) return "text-yellow-500";
if (latency < 500) return "text-orange-500";
return "text-red-500";
}
// --- Sparkline Renderer ------------------------------------------------------
@@ -649,8 +580,8 @@ class SparklineRenderer {
const ch = h - m.top - m.bottom;
ctx.clearRect(0, 0, w, h);
SparklineRenderer._drawYAxis(ctx, w, m, ch);
SparklineRenderer._drawXAxis(ctx, h, m, cw);
SparklineRenderer._drawYAxis(ctx, w, h, m, ch);
SparklineRenderer._drawXAxis(ctx, w, h, m, cw);
const len = history.length;
const pw = cw / (CONFIG.maxHistoryPoints - 1);
@@ -666,7 +597,7 @@ class SparklineRenderer {
SparklineRenderer._drawTip(ctx, history, getX, getY);
}
static _drawYAxis(ctx, w, m, ch) {
static _drawYAxis(ctx, w, h, m, ch) {
ctx.font = "300 12px monospace";
ctx.textAlign = "right";
ctx.textBaseline = "middle";
@@ -683,7 +614,7 @@ class SparklineRenderer {
}
}
static _drawXAxis(ctx, h, m, cw) {
static _drawXAxis(ctx, w, h, m, cw) {
ctx.textAlign = "center";
ctx.textBaseline = "top";
for (const tick of CONFIG.xAxisTicks) {
@@ -771,18 +702,7 @@ class SparklineRenderer {
// horizontally.
const STATUS_TEXT_CLASS = "status-text text-xs text-right col-span-2 mt-5";
// Escapes text for HTML, so it shows as written inside an element or a
// quoted attribute and is never read as markup.
function escapeHTML(text) {
return text
.replaceAll("&", "&amp;")
.replaceAll("<", "&lt;")
.replaceAll(">", "&gt;")
.replaceAll('"', "&quot;")
.replaceAll("'", "&#39;");
}
export function hostRowHTML(host, index, showPin = true) {
function hostRowHTML(host, index, showPin = true) {
const pinColor = host.pinned
? "text-blue-500"
: "text-gray-600 hover:text-gray-400";
@@ -801,12 +721,12 @@ export function hostRowHTML(host, index, showPin = true) {
<div class="w-[420px] flex-shrink-0 grid grid-cols-[minmax(0,1fr)_auto] items-center">
<div class="flex items-center gap-2 min-w-[200px]">
<div class="w-3 h-3 rounded-full flex-shrink-0 bg-[#6b7280]"></div>
<span class="font-medium text-white truncate">${escapeHTML(host.name)}</span>
<span class="font-medium text-white truncate">${host.name}</span>
</div>
<div class="latency-value text-4xl font-bold tabular-nums text-right mt-3" data-host="${index}">
<span class="text-gray-500">---</span>
</div>
<a href="${escapeHTML(host.url)}" target="_blank" rel="noopener" class="text-xs text-gray-500 truncate block col-span-2 -mt-2">${escapeHTML(host.url)}</a>
<a href="${host.url}" target="_blank" rel="noopener" class="text-xs text-gray-500 truncate block col-span-2 -mt-2">${host.url}</a>
<div class="${STATUS_TEXT_CLASS} text-gray-500" data-host="${index}">waiting...</div>
</div>
<div class="flex-grow sparkline-container rounded overflow-hidden border border-gray-700/30">
@@ -829,7 +749,7 @@ function wanRowsHTML(wanHosts) {
return rows.join("");
}
export function buildUI(state) {
function buildUI(state) {
const app = document.getElementById("app");
app.innerHTML = `
<div class="mx-auto px-[5%] py-8">
@@ -905,13 +825,13 @@ export function buildUI(state) {
</div>
<footer class="mt-8 text-center text-gray-600 text-xs">
<p>Latency measured via GET requests | CORS restrictions may affect some measurements</p>
<p>Latency measured via GET requests | IPv4 only | CORS restrictions may affect some measurements</p>
<p class="mt-2">
<span class="inline-block w-3 h-3 rounded-full bg-green-500 mr-1 align-middle"></span>&lt;50ms
<span class="inline-block w-3 h-3 rounded-full bg-lime-500 mr-1 ml-3 align-middle"></span>&lt;100ms
<span class="inline-block w-3 h-3 rounded-full bg-yellow-500 mr-1 ml-3 align-middle"></span>&lt;200ms
<span class="inline-block w-3 h-3 rounded-full bg-orange-500 mr-1 ml-3 align-middle"></span>&lt;500ms
<span class="inline-block w-3 h-3 rounded-full bg-red-500 mr-1 ml-3 align-middle"></span>&gt;=500ms
<span class="inline-block w-3 h-3 rounded-full bg-red-500 mr-1 ml-3 align-middle"></span>&gt;500ms
<span class="inline-block w-3 h-3 rounded-full bg-gray-500 mr-1 ml-3 align-middle"></span>offline
</p>
<p class="mt-2"><a href="https://git.eeqj.de/sneak/netwatch/commit/${__COMMIT_FULL__}" target="_blank" rel="noopener" class="text-gray-600 hover:text-gray-400">${__COMMIT_HASH__}</a></p>
@@ -972,7 +892,10 @@ function updateHostRow(host, index) {
latencyEl.innerHTML = `<span class="text-gray-500">---</span>`;
}
const { min, med, avg, max } = host.historyStats();
const avg = host.averageLatency();
const med = host.medianLatency();
const min = host.minLatency();
const max = host.maxLatency();
if (host.status === "online" && avg !== null) {
statusEl.innerHTML = statusStatsHTML([
["min", min],
@@ -995,7 +918,7 @@ function updateHostRow(host, index) {
SparklineRenderer.draw(canvas, host.history);
}
export function updateSummary(state) {
function updateSummary(state) {
const stats = state.wanStats();
const hstats = state.wanHistoryStats();
@@ -1014,20 +937,13 @@ export function updateSummary(state) {
const hmaxUnitEl = document.getElementById("summary-hmax-unit");
if (!reachableEl) return;
// Before any WAN host's check is recorded, as after an interval change,
// no host has answered or failed, so the slot reads as at page load.
if (state.wan.every((h) => h.status === "pending")) {
reachableEl.textContent = "--/--";
reachableEl.className = "text-white";
} else {
reachableEl.textContent = `${stats.reachable}/${stats.total}`;
reachableEl.className =
stats.reachable === stats.total
? "text-green-400"
: stats.reachable === 0
? "text-red-400"
: "text-yellow-400";
}
reachableEl.textContent = `${stats.reachable}/${stats.total}`;
reachableEl.className =
stats.reachable === stats.total
? "text-green-400"
: stats.reachable === 0
? "text-red-400"
: "text-yellow-400";
if (stats.min !== null) {
minEl.textContent = `${stats.min}`;
@@ -1114,37 +1030,11 @@ function updateHealthBox(state) {
else if (health === "healthy") log.notice(`Health: ${labels[health]}`);
}
// Writes the local time, with its time zone's name, and the UTC time into
// the header's clocks. The clocks only decorate the page: in a browser
// whose Intl.DateTimeFormat rejects the "shortGeneric" time zone name
// (Chrome before 95, Firefox before 91, Safari before 15.4) they are left
// blank.
export function updateClocks() {
let local = "";
let utc = "";
try {
const now = new Date();
const zone = new Intl.DateTimeFormat("en-US", {
timeZoneName: "shortGeneric",
})
.formatToParts(now)
.find((p) => p.type === "timeZoneName").value;
const pad = (n) => String(n).padStart(2, "0");
local = `Local: ${now.toLocaleString("sv-SE", { hour12: false })} ${zone}`;
utc =
`UTC: ${now.getUTCFullYear()}-${pad(now.getUTCMonth() + 1)}-${pad(now.getUTCDate())} ` +
`${pad(now.getUTCHours())}:${pad(now.getUTCMinutes())}:${pad(now.getUTCSeconds())} UTC`;
} catch {
// Both clocks are left blank.
}
document.getElementById("clock-local").textContent = local;
document.getElementById("clock-utc").textContent = utc;
}
// --- Debug Log Renderer ------------------------------------------------------
// One line of the debug log panel, its message set as text.
function debugLogLine(entry) {
function renderDebugLog() {
const el = document.getElementById("debug-log");
if (!el) return;
const levelColors = {
error: "text-red-400",
warning: "text-orange-400",
@@ -1152,43 +1042,17 @@ function debugLogLine(entry) {
info: "text-gray-300",
debug: "text-gray-500",
};
const ts = formatUTCTimestamp(entry.timestamp);
const lvl = entry.level.toUpperCase().padEnd(7);
const line = document.createElement("div");
line.className = levelColors[entry.level] || "text-gray-400";
line.textContent = `${ts} ${lvl} ${entry.message}`;
return line;
}
// Draws every line of the debug log into the panel, when it is opened.
function renderDebugLog() {
const el = document.getElementById("debug-log");
if (!el) return;
el.replaceChildren(...debugLog.map((entry) => debugLogLine(entry)));
el.innerHTML = debugLog
.map((entry) => {
const ts = formatUTCTimestamp(entry.timestamp);
const cls = levelColors[entry.level] || "text-gray-400";
const lvl = entry.level.toUpperCase().padEnd(7);
return `<div class="${cls}">${ts} ${lvl} ${entry.message}</div>`;
})
.join("");
el.scrollTop = el.scrollHeight;
}
// The request that scrolls the open panel to its newest line in the next
// frame. One waits at most, also in a hidden tab, where frames do not run.
let debugLogScrollFrame = 0;
// Adds entry to the open panel as its last line, and drops the first line
// once the panel holds more than maxLogEntries. A check that ends while the
// page is busy is timed only when the page is done, so the lines already
// shown are left as they are, and the panel is scrolled once a frame
// rather than once a line: scrolling it lays out all of its lines again.
function appendDebugLogLine(entry) {
const el = document.getElementById("debug-log");
if (!el) return;
el.append(debugLogLine(entry));
if (el.children.length > CONFIG.maxLogEntries)
el.removeChild(el.firstElementChild);
cancelAnimationFrame(debugLogScrollFrame);
debugLogScrollFrame = requestAnimationFrame(() => {
el.scrollTop = el.scrollHeight;
});
}
// --- Sorting -----------------------------------------------------------------
// Sort WAN hosts: pinned hosts first (alphabetically), then unpinned hosts
@@ -1241,26 +1105,6 @@ function sortAndRebuildWAN(state) {
// --- Main Loop ---------------------------------------------------------------
// Writes one line to the browser console, and the same line to the debug
// log, for a check the page is about to record: for every check that
// failed, and for a check that answered after checks that failed. Called
// before host.pushSample, while host.consecutiveFailures still counts the
// checks before this one.
function logCheck(host, result) {
const target = `${host.name} ${host.url} at ${new Date().toISOString()}`;
const failed = host.consecutiveFailures;
if (result.error) {
const line = `netwatch: check failed: ${target}: ${result.reason}`;
console.error(line);
log.error(line);
} else if (failed > 0) {
const checks = failed === 1 ? "check" : "checks";
const line = `netwatch: target recovered: ${target}: answered after ${result.latency} ms, following ${failed} failed ${checks} in a row`;
console.info(line);
log.info(line);
}
}
export async function tick(state, signal, onOffline) {
const ts = Date.now();
@@ -1294,7 +1138,6 @@ export async function tick(state, signal, onOffline) {
if (state.paused || signal.aborted || state.tickCount === 0) {
return;
}
logCheck(host, r);
host.pushSample(ts, r);
updateHostRow(host, state.allHosts.indexOf(host));
log.debug(`${host.name}: ${r.error ? r.error : r.latency + "ms"}`);
@@ -1317,9 +1160,8 @@ export async function tick(state, signal, onOffline) {
// rows whose check ended before the resume still read "paused"
state.allHosts.forEach((host, i) => updateHostRow(host, i));
// Sort after the first real check, then every CONFIG.roundsPerSort
// ticks thereafter
if (state.tickCount === 2 || state.tickCount % CONFIG.roundsPerSort === 1) {
// Sort after the first real check, then every 10 ticks thereafter
if (state.tickCount === 2 || state.tickCount % 10 === 1) {
sortAndRebuildWAN(state);
}
@@ -1342,10 +1184,9 @@ export async function tick(state, signal, onOffline) {
// --- Recovery Probe ----------------------------------------------------------
// When offline, check CONFIG.recoveryProbeHosts random WAN hosts every
// CONFIG.recoveryProbeInterval ms, giving up the checks started one interval
// before, so at most that many are ever waiting. As soon as one answers,
// stop probing and start a new round at once.
// When offline, check 4 random WAN hosts every 500ms, giving up the checks
// started 500ms before, so at most 4 are ever waiting. As soon as one
// answers, stop probing and start a new round at once.
function startRecoveryProbe(state, startRounds) {
if (state._recoveryProbeId) return; // already running
const candidates = [...state.wan];
@@ -1353,7 +1194,7 @@ function startRecoveryProbe(state, startRounds) {
const j = Math.floor(Math.random() * (i + 1));
[candidates[i], candidates[j]] = [candidates[j], candidates[i]];
}
const canaries = candidates.slice(0, CONFIG.recoveryProbeHosts);
const canaries = candidates.slice(0, 4);
log.notice(
`Recovery probe started (${canaries.map((h) => h.name).join(", ")})`,
);
@@ -1370,7 +1211,7 @@ function startRecoveryProbe(state, startRounds) {
startRounds();
});
}
}, CONFIG.recoveryProbeInterval);
}, 500);
}
function stopRecoveryProbe(state) {
@@ -1536,6 +1377,24 @@ async function init() {
sortAndRebuildWAN(state);
});
function updateClocks() {
const now = new Date();
const pad = (n) => String(n).padStart(2, "0");
const utc =
`${now.getUTCFullYear()}-${pad(now.getUTCMonth() + 1)}-${pad(now.getUTCDate())} ` +
`${pad(now.getUTCHours())}:${pad(now.getUTCMinutes())}:${pad(now.getUTCSeconds())} UTC`;
const local =
now.toLocaleString("sv-SE", { hour12: false }) +
" " +
new Intl.DateTimeFormat("en-US", { timeZoneName: "shortGeneric" })
.formatToParts(now)
.find((p) => p.type === "timeZoneName").value;
document.getElementById("clock-local").textContent = "Local: " + local;
document.getElementById("clock-utc").textContent = "UTC: " + utc;
}
updateClocks();
setInterval(updateClocks, 1000);
// Rounds never overlap: a round first gives up the last round's checks
// if they are still waiting, and the last round then records nothing
// more. At a steady interval they never are, as they time out at 80% of
@@ -1571,7 +1430,9 @@ async function init() {
// Clear all host history and reset state
for (const host of state.allHosts) {
host.reset();
host.history = [];
host.lastLatency = null;
host.status = "pending";
}
state.tickCount = 0;
@@ -1614,12 +1475,7 @@ async function init() {
});
window.addEventListener("resize", () => handleResize(state));
setTimeout(() => handleResize(state), CONFIG.resizeDelay);
// The clocks start last, after the rounds: they only decorate the page,
// so nothing in them may stop the monitor from probing.
updateClocks();
setInterval(updateClocks, 1000);
setTimeout(() => handleResize(state), 100);
}
// Bootstrap only when loaded as the page: a real DOM containing the #app
web/src/styles.css → src/styles.css
View File
test/unit/main.test.js
+45 -529
View File
@@ -1,4 +1,4 @@
// Unit tests for web/src/main.js, run with Node's built-in test runner by the
// Unit tests for src/main.js, run with Node's built-in test runner by the
// test script in package.json. Importing the module does not start the
// page.
@@ -6,41 +6,28 @@ import { beforeEach, test } from "node:test";
import assert from "node:assert/strict";
import {
AppState,
buildUI,
CONFIG,
greyOutUI,
hostRowHTML,
HostState,
humanDuration,
latencyClass,
latencyHex,
log,
measureLatency,
Reporter,
tick,
updateClocks,
updateSummary,
} from "../../web/src/main.js";
} from "../../src/main.js";
// There is no page here, so the tests stand in for it. The debug log looks
// for its panel by id and finds none, an element the page creates is a
// plain object, and no frame the page asks for ever comes. Each element of
// a host's row that tick or greyOutUI draws into is a plain object, made
// the first time a test looks it up and kept in elements under its
// selector until the next test starts. As on a page, writing its text
// replaces its markup; the status dot greyOutUI looks for in it is not
// there. Drawing a sparkline does nothing; it looks for the pixel ratio on
// window and finds none. The commit the page's footer names, which
// vite.config.js fills in when it builds the page, is blank. In each test,
// console.error and console.info print nothing and keep what they are
// given.
const doNothing = () => {};
// for its panel by id and finds none. Each element of a host's row that
// tick or greyOutUI draws into is a plain object, made the first time a
// test looks it up and kept in elements under its selector until the next
// test starts. As on a page, writing its text replaces its markup; the
// status dot greyOutUI looks for in it is not there. Drawing a sparkline
// does nothing; it looks for the pixel ratio on window and finds none.
let elements;
beforeEach((t) => {
beforeEach(() => {
elements = {};
t.mock.method(console, "error", doNothing);
t.mock.method(console, "info", doNothing);
});
const doNothing = () => {};
const canvasContext = {
clearRect: doNothing,
beginPath: doNothing,
@@ -53,13 +40,8 @@ const canvasContext = {
arc: doNothing,
};
globalThis.window = {};
globalThis.requestAnimationFrame = doNothing;
globalThis.cancelAnimationFrame = doNothing;
globalThis.__COMMIT_HASH__ = "";
globalThis.__COMMIT_FULL__ = "";
globalThis.document = {
getElementById: () => null,
createElement: () => ({}),
querySelector: (selector) =>
(elements[selector] ??= {
getContext: () => canvasContext,
@@ -83,18 +65,11 @@ function statusText(state, host) {
return elements[`.status-text[data-host="${index}"]`]?.innerHTML;
}
// What this test wrote to the browser console with console[method].
function consoleLines(method) {
return console[method].mock.calls.map((call) => call.arguments[0]);
}
// Mocks the clock for test t, so that a check lasting seconds takes no real
// time, and replaces fetch with targets that each answer after
// answerAfter(url) milliseconds of that clock, or never when that is
// Infinity. The target at unreachableUrl, if one is given, does not
// answer: after that time its fetch fails with the error a browser gives
// the page for a network error. Both are restored when the test ends.
function mockTargets(t, answerAfter, unreachableUrl) {
// Infinity. Both are restored when the test ends.
function mockTargets(t, answerAfter) {
t.mock.timers.enable({ apis: ["setTimeout", "Date"] });
t.mock.method(performance, "now", () => Date.now());
t.mock.method(
@@ -102,12 +77,8 @@ function mockTargets(t, answerAfter, unreachableUrl) {
"fetch",
(url, { signal }) =>
new Promise((resolve, reject) => {
const answer =
url === unreachableUrl
? () => reject(new TypeError("Failed to fetch"))
: resolve;
if (answerAfter(url) !== Infinity) {
setTimeout(answer, answerAfter(url));
setTimeout(resolve, answerAfter(url));
}
signal.addEventListener("abort", () => reject(signal.reason));
}),
@@ -135,7 +106,6 @@ for (const interval of [10000, 30000]) {
assert.deepEqual(await settled(check), {
latency: slowAnswer,
error: null,
reason: null,
});
});
@@ -149,37 +119,10 @@ for (const interval of [10000, 30000]) {
assert.deepEqual(await settled(check), {
latency: null,
error: "timeout",
reason: `timed out after ${timeout} ms (limit ${timeout} ms)`,
});
});
}
// A browser can run a timer late, on a busy page or in a background tab.
// Moving the mocked clock on 30000ms at once runs the 24000ms timeout with
// the clock already at 30000ms.
test("at a 30000ms interval, a check whose timeout runs late gives how long the request took and the time limit", async (t) => {
CONFIG.updateInterval = 30000;
mockTargets(t, () => Infinity);
const check = measureLatency("https://target.test");
t.mock.timers.tick(30000);
assert.deepEqual(await settled(check), {
latency: null,
error: "timeout",
reason: "timed out after 30000 ms (limit 24000 ms)",
});
});
test("a check fetches the target's URL as written, with no query string added", async (t) => {
mockTargets(t, () => 10);
const check = measureLatency("https://fsn1-speed.hetzner.com");
t.mock.timers.tick(10);
assert.notEqual(await settled(check), "still waiting");
assert.equal(
fetch.mock.calls[0].arguments[0],
"https://fsn1-speed.hetzner.com",
);
});
test("at a 30000ms interval, a target answering after 1000ms shows in its row while another target's check is still waiting", async (t) => {
CONFIG.updateInterval = 30000;
const state = new AppState([
@@ -188,7 +131,7 @@ test("at a 30000ms interval, a target answering after 1000ms shows in its row wh
const answering = state.local[0];
const waiting = state.wan[0];
// No target but the answering one ever answers.
mockTargets(t, (url) => (url === answering.url ? 1000 : Infinity));
mockTargets(t, (url) => (url.startsWith(answering.url) ? 1000 : Infinity));
// The third tick: the first is discarded as a whole, and the second ends
// by sorting the rows, which rebuilds a page that is not here.
state.tickCount = 2;
@@ -207,16 +150,15 @@ test("at a 30000ms interval, a target answering after 1000ms shows in its row wh
});
// In the next three tests, the answering target's check is still waiting
// when something happens after which its result must not be recorded or
// show in its row, and the check must write nothing to the console.
// when something happens after which its result must not show.
test("at a 30000ms interval, a check still waiting when its round is given up is not recorded and does not show in its row", async (t) => {
test("at a 30000ms interval, a check still waiting when its round is given up does not show in its row", async (t) => {
CONFIG.updateInterval = 30000;
const state = new AppState([
{ name: "Answering", url: "https://answering.test" },
]);
const answering = state.local[0];
mockTargets(t, (url) => (url === answering.url ? 1000 : Infinity));
mockTargets(t, (url) => (url.startsWith(answering.url) ? 1000 : Infinity));
state.tickCount = 2;
const roundChecks = new AbortController();
@@ -226,19 +168,15 @@ test("at a 30000ms interval, a check still waiting when its round is given up is
roundChecks.abort();
assert.notEqual(await settled(round), "still waiting");
assert.equal(latencyFigure(state, answering), undefined);
assert.deepEqual(answering.history, []);
assert.equal(answering.status, "pending");
assert.deepEqual(consoleLines("error"), []);
assert.deepEqual(consoleLines("info"), []);
});
test("at a 30000ms interval, a check still waiting when the user pauses is not recorded and does not show in its row", async (t) => {
test("at a 30000ms interval, a check still waiting when the user pauses does not show in its row", async (t) => {
CONFIG.updateInterval = 30000;
const state = new AppState([
{ name: "Answering", url: "https://answering.test" },
]);
const answering = state.local[0];
mockTargets(t, (url) => (url === answering.url ? 1000 : Infinity));
mockTargets(t, (url) => (url.startsWith(answering.url) ? 1000 : Infinity));
state.tickCount = 2;
const round = tick(state, new AbortController().signal);
@@ -247,28 +185,20 @@ test("at a 30000ms interval, a check still waiting when the user pauses is not r
t.mock.timers.tick(500);
assert.equal(await settled(round), "still waiting");
assert.equal(latencyFigure(state, answering), undefined);
assert.deepEqual(answering.history, []);
assert.equal(answering.status, "pending");
assert.deepEqual(consoleLines("error"), []);
assert.deepEqual(consoleLines("info"), []);
});
test("at a 30000ms interval, a check in the first round is not recorded and does not show in its row", async (t) => {
test("at a 30000ms interval, a check in the first round does not show in its row", async (t) => {
CONFIG.updateInterval = 30000;
const state = new AppState([
{ name: "Answering", url: "https://answering.test" },
]);
const answering = state.local[0];
mockTargets(t, (url) => (url === answering.url ? 1000 : Infinity));
mockTargets(t, (url) => (url.startsWith(answering.url) ? 1000 : Infinity));
const round = tick(state, new AbortController().signal);
t.mock.timers.tick(1000);
assert.equal(await settled(round), "still waiting");
assert.equal(latencyFigure(state, answering), undefined);
assert.deepEqual(answering.history, []);
assert.equal(answering.status, "pending");
assert.deepEqual(consoleLines("error"), []);
assert.deepEqual(consoleLines("info"), []);
});
test("at a 30000ms interval, after the user pauses and resumes during a round, no row reads paused once its last check ends", async (t) => {
@@ -277,7 +207,7 @@ test("at a 30000ms interval, after the user pauses and resumes during a round, n
{ name: "Answering", url: "https://answering.test" },
]);
const answering = state.local[0];
mockTargets(t, (url) => (url === answering.url ? 1000 : Infinity));
mockTargets(t, (url) => (url.startsWith(answering.url) ? 1000 : Infinity));
state.tickCount = 2;
const round = tick(state, new AbortController().signal);
@@ -300,261 +230,6 @@ test("at a 30000ms interval, after the user pauses and resumes during a round, n
}
});
// In the next tests a round checks one target, Target, at a 30000ms
// interval, so a check times out after 24000ms. The mocked clock starts at
// 1970-01-01T00:00:00.000Z.
// An app state with Target and no WAN targets, so its rounds check only
// Target, and whose next round is recorded: it is the third, as the first
// is discarded and the second ends by sorting the rows, which rebuilds a
// page that is not here. Returns it and Target.
function stateWithOneTarget() {
CONFIG.updateInterval = 30000;
const state = new AppState([
{ name: "Target", url: "https://target.test" },
]);
state.wan = [];
state.tickCount = 2;
return { state, target: state.local[0] };
}
test("a check that fails with a network error writes one console line with the target, the time, the error and how long the request took", async (t) => {
const { state, target } = stateWithOneTarget();
mockTargets(t, () => 23, target.url);
const round = tick(state, new AbortController().signal);
t.mock.timers.tick(23);
assert.notEqual(await settled(round), "still waiting");
assert.deepEqual(consoleLines("error"), [
"netwatch: check failed: Target https://target.test at 1970-01-01T00:00:00.023Z: network error (TypeError: Failed to fetch) after 23 ms",
]);
assert.deepEqual(consoleLines("info"), []);
});
test("a check that times out writes one console line with the target, the time, how long the request took and the time limit", async (t) => {
const { state } = stateWithOneTarget();
mockTargets(t, () => Infinity);
const round = tick(state, new AbortController().signal);
t.mock.timers.tick(24000);
assert.notEqual(await settled(round), "still waiting");
assert.deepEqual(consoleLines("error"), [
"netwatch: check failed: Target https://target.test at 1970-01-01T00:00:24.000Z: timed out after 24000 ms (limit 24000 ms)",
]);
assert.deepEqual(consoleLines("info"), []);
});
// An answer that took longer than CONFIG.maxLatency is recorded as a
// timeout. The limit is the check's own timeout, so such an answer is one
// that came in just as the check timed out; here it is lowered to 500ms.
test("a check answered over the time limit writes one console line with the target, the time, how long the answer took and the limit", async (t) => {
const { state } = stateWithOneTarget();
t.mock.getter(CONFIG, "maxLatency", () => 500);
mockTargets(t, () => 1000);
const round = tick(state, new AbortController().signal);
t.mock.timers.tick(1000);
assert.notEqual(await settled(round), "still waiting");
assert.deepEqual(consoleLines("error"), [
"netwatch: check failed: Target https://target.test at 1970-01-01T00:00:01.000Z: answered after 1000 ms, over the 500 ms limit",
]);
assert.deepEqual(consoleLines("info"), []);
});
test("a check that answers writes nothing to the console", async (t) => {
const { state } = stateWithOneTarget();
mockTargets(t, () => 30);
const round = tick(state, new AbortController().signal);
t.mock.timers.tick(30);
assert.notEqual(await settled(round), "still waiting");
assert.deepEqual(consoleLines("error"), []);
assert.deepEqual(consoleLines("info"), []);
});
for (const [failed, checks] of [
[1, "1 failed check"],
[3, "3 failed checks"],
]) {
test(`a check that answers after ${checks} writes one console line saying the target recovered, and the next writes nothing`, async (t) => {
const { state, target } = stateWithOneTarget();
for (let i = 0; i < failed; i++) {
target.pushSample(Date.now(), {
latency: null,
error: "unreachable",
});
}
mockTargets(t, () => 40);
for (let i = 0; i < 2; i++) {
const round = tick(state, new AbortController().signal);
t.mock.timers.tick(40);
assert.notEqual(await settled(round), "still waiting");
}
assert.deepEqual(consoleLines("info"), [
`netwatch: target recovered: Target https://target.test at 1970-01-01T00:00:00.040Z: answered after 40 ms, following ${checks} in a row`,
]);
assert.deepEqual(consoleLines("error"), []);
});
}
test("a check that fails in the first round, which is discarded, writes nothing to the console", async (t) => {
const { state, target } = stateWithOneTarget();
state.tickCount = 0;
mockTargets(t, () => 23, target.url);
const round = tick(state, new AbortController().signal);
t.mock.timers.tick(23);
assert.notEqual(await settled(round), "still waiting");
assert.deepEqual(consoleLines("error"), []);
assert.deepEqual(consoleLines("info"), []);
});
// The reports Reporter sent in this test, each as the hosts it sent.
function reportedHosts() {
return fetch.mock.calls.map(
(call) => JSON.parse(call.arguments[1].body).hosts,
);
}
// In the next two tests every report is delivered, and only Target has
// checks to report. target.reset() does to Target what the interval menu
// does to each target.
// The interval changes after the first report. The second report is sent
// before Target's first check since then, and the third after it. A fourth
// would hold no check the first three did not, so it is not sent.
test("checks recorded before an interval change and not yet reported go in the next report, with the status of the last check, and no check is reported twice", async (t) => {
const state = new AppState([
{ name: "Target", url: "https://target.test" },
]);
const target = state.local[0];
const reporter = new Reporter(state, "client", CONFIG.reportInterval);
t.mock.method(globalThis, "fetch", async () => ({ ok: true }));
target.pushSample(1000, { latency: 10, error: null });
await reporter.flush();
target.pushSample(2000, { latency: 20, error: null });
target.pushSample(3000, { latency: null, error: "timeout" });
target.reset();
await reporter.flush();
target.pushSample(4000, { latency: 40, error: null });
await reporter.flush();
await reporter.flush();
const name = "Target";
const url = "https://target.test";
assert.deepEqual(reportedHosts(), [
[
{
name,
url,
status: "online",
history: [{ t: 1000, latency: 10, error: null }],
},
],
[
{
name,
url,
status: "error",
history: [
{ t: 2000, latency: 20, error: null },
{ t: 3000, latency: null, error: "timeout" },
],
},
],
[
{
name,
url,
status: "online",
history: [{ t: 4000, latency: 40, error: null }],
},
],
]);
// The page's history starts over.
assert.deepEqual(target.history, [
{ timestamp: 4000, latency: 40, error: null },
]);
});
// The interval changes twice, after 60 checks each time, before the first
// report. Of the 120 checks the interval menu cleared, the report has the
// last 100 (CONFIG.maxHistoryPoints).
test("of the checks interval changes cleared before they were reported, the next report has the last 100", async (t) => {
const state = new AppState([
{ name: "Target", url: "https://target.test" },
]);
const target = state.local[0];
const reporter = new Reporter(state, "client", CONFIG.reportInterval);
t.mock.method(globalThis, "fetch", async () => ({ ok: true }));
for (let n = 1; n <= 120; n++) {
target.pushSample(n * 1000, { latency: 10, error: null });
if (n % 60 === 0) target.reset();
}
await reporter.flush();
const sent = reportedHosts()[0][0].history;
assert.equal(sent.length, 100);
assert.equal(sent[0].t, 21000);
assert.equal(sent.at(-1).t, 120000);
});
// panel stands in for the open debug log panel, and for the element in it
// that holds its lines, whichever the page looks up by id; the lines are
// kept in order in lines. Drawing the whole panel, as opening it does,
// replaces every line with a new one.
test("with the debug log open, writing more lines than it keeps adds each to the panel and leaves the lines already shown as they are", (t) => {
const lines = [];
const panel = {
classList: { contains: () => false },
children: lines,
get firstElementChild() {
return lines[0];
},
append: (line) => lines.push(line),
removeChild: (line) => lines.splice(lines.indexOf(line), 1),
replaceChildren: (...newLines) =>
lines.splice(0, lines.length, ...newLines),
};
t.mock.method(globalThis.document, "getElementById", () => panel);
const kept = CONFIG.maxLogEntries;
for (let i = 1; i <= kept; i++) log.info(`line ${i}`);
const shown = [...lines];
for (let i = kept + 1; i <= kept + 5; i++) log.info(`line ${i}`);
assert.deepEqual(
lines.map((line) => line.textContent.match(/line \d+$/)?.[0]),
Array.from({ length: kept }, (_, i) => `line ${i + 6}`),
);
// The first five lines shown were dropped, and the rest are the same
// lines, not drawn again.
shown.slice(5).forEach((line, i) => assert.equal(lines[i], line));
});
// The page shows &lt; &gt; &quot; &amp; and &#39; in a row's markup as
// < > " & and '.
test(`a target whose name and URL hold < > " & and ' shows those characters in its row`, () => {
const host = new HostState({
name: `<b>"x" & 'y'</b>`,
url: `https://x.test/<b>?a="x"&b='y'`,
});
const row = hostRowHTML(host, 0);
assert.doesNotMatch(row, /<b>/);
assert.ok(
row.includes(
">&lt;b&gt;&quot;x&quot; &amp; &#39;y&#39;&lt;/b&gt;</span>",
),
);
assert.ok(
row.includes(
'href="https://x.test/&lt;b&gt;?a=&quot;x&quot;&amp;b=&#39;y&#39;"',
),
);
assert.ok(
row.includes(
">https://x.test/&lt;b&gt;?a=&quot;x&quot;&amp;b=&#39;y&#39;</a>",
),
);
});
for (const [seconds, text] of [
[0, "0s"],
[1, "1s"],
@@ -598,32 +273,6 @@ test("a check that timed out or found its target unreachable has a grey figure a
assert.equal(latencyHex(null), "#6b7280");
});
// buildUI draws the page into #app, here a plain object. Each entry in the
// footer's color legend is a colored dot and the latencies it stands for,
// with < and > written as &lt; and &gt;. A latency takes the color of the
// first entry in CONFIG.latencyColors whose limit it is below, so the
// legend has, for each of those entries in order, a dot of its color (a
// bg- class where CONFIG.latencyColors has a text- one) and the latencies
// below its limit, or, for the last, which has no limit, the latencies
// from the limit before it up. A gray dot for offline comes after them.
test("the footer's color legend has each entry in CONFIG.latencyColors, with its color and limit, then offline", (t) => {
const app = {};
t.mock.method(globalThis.document, "getElementById", () => app);
buildUI(new AppState([]));
const legend = [
...app.innerHTML.matchAll(/(bg-\w+-500) [^"]*"><\/span>(\S+)/g),
].map(([, dot, latencies]) => [dot, latencies]);
const colors = CONFIG.latencyColors;
const expected = colors.map((color, i) => [
color.className.replace("text-", "bg-"),
color.below === Infinity
? `&gt;=${colors[i - 1].below}ms`
: `&lt;${color.below}ms`,
]);
assert.deepEqual(legend, [...expected, ["bg-gray-500", "offline"]]);
});
// A target whose checks, in turn, answered after each of latencies ms, or,
// for null, found it unreachable.
function hostAfter(latencies) {
@@ -662,157 +311,39 @@ for (const { history, latencies, statistics } of [
latencies: [10, 40, 20, 25],
statistics: { min: 10, max: 40, average: 24, median: 23 },
},
{
// Sorted as text rather than as numbers, these answers would put
// 100 in the middle. The average, 39.67, is rounded.
history: "answers with different numbers of digits",
latencies: [100, 9, 10],
statistics: { min: 9, max: 100, average: 40, median: 10 },
},
]) {
test(`a target's min, max, average and median latency over ${history}`, () => {
const { min, max, avg, med } = hostAfter(latencies).historyStats();
assert.deepEqual({ min, max, average: avg, median: med }, statistics);
const host = hostAfter(latencies);
assert.deepEqual(
{
min: host.minLatency(),
max: host.maxLatency(),
average: host.averageLatency(),
median: host.medianLatency(),
},
statistics,
);
});
}
// The summary's figures come from each WAN target's last check, by the same
// rules as a target's own: here four answered, one was found unreachable
// and the rest have not been checked yet. The median, 22.5, and the
// average, 21.25, are rounded.
test("the summary's min, max, median and average latency over the WAN targets' last checks", () => {
// An app state in which, of the WAN targets, the first timedOut timed out,
// the next answered answered after latency ms, and the rest have not been
// checked yet.
function stateAfter({ timedOut, answered, latency }) {
const state = new AppState([]);
[30, 10, null, 25, 20].forEach((latency, i) =>
state.wan[i].pushSample(
Date.now(),
latency === null
? { latency: null, error: "unreachable" }
: { latency, error: null },
),
);
assert.deepEqual(state.wanStats(), {
reachable: 4,
total: state.wan.length,
min: 10,
max: 30,
med: 23,
avg: 21,
});
});
// In the next two tests each element of the summary that updateSummary
// writes into is a plain object, made the first time it is looked up and
// kept in elements under "#" and its id.
// The interval menu resets each target and counts the rounds from 0 again,
// then updates the summary, before any check since the change is recorded.
test("after an interval change, the summary's Reachable slot reads --/-- in white, as at page load", (t) => {
t.mock.method(
globalThis.document,
"getElementById",
(id) => (elements[`#${id}`] ??= {}),
);
const state = new AppState([]);
for (const host of state.wan) {
host.pushSample(Date.now(), { latency: 30, error: null });
}
state.tickCount = 5;
for (const host of state.allHosts) host.reset();
state.tickCount = 0;
updateSummary(state);
assert.equal(elements["#summary-reachable"].textContent, "--/--");
assert.equal(elements["#summary-reachable"].className, "text-white");
});
test("once every WAN target's check has failed, the summary's Reachable slot reads 0 of them, in red", (t) => {
t.mock.method(
globalThis.document,
"getElementById",
(id) => (elements[`#${id}`] ??= {}),
);
const state = new AppState([]);
for (const host of state.wan) {
for (const host of state.wan.slice(0, timedOut)) {
host.pushSample(Date.now(), { latency: null, error: "timeout" });
}
updateSummary(state);
assert.equal(
elements["#summary-reachable"].textContent,
`0/${state.wan.length}`,
);
assert.equal(elements["#summary-reachable"].className, "text-red-400");
});
// In the next two tests each of the header's clocks is a plain object, made
// the first time updateClocks looks it up and kept in elements under "#" and
// its id.
// The mocked clock reads 1970-01-01T00:00:00.000Z.
test("the header's clocks show the local time with its time zone's name, and the UTC time", (t) => {
t.mock.method(
globalThis.document,
"getElementById",
(id) => (elements[`#${id}`] ??= {}),
);
t.mock.timers.enable({ apis: ["Date"] });
updateClocks();
assert.match(
elements["#clock-local"].textContent,
/^Local: \d{4}-\d\d-\d\d \d\d:\d\d:\d\d \S/,
);
assert.equal(
elements["#clock-utc"].textContent,
"UTC: 1970-01-01 00:00:00 UTC",
);
});
// Here Intl.DateTimeFormat is as in Chrome before 95, Firefox before 91 or
// Safari before 15.4: it throws a RangeError when asked for the time zone's
// "shortGeneric" name.
test("in a browser that cannot name the time zone, updating the clocks throws nothing and leaves them blank", (t) => {
t.mock.method(
globalThis.document,
"getElementById",
(id) => (elements[`#${id}`] ??= {}),
);
const DateTimeFormat = Intl.DateTimeFormat;
t.mock.method(Intl, "DateTimeFormat", function (locales, options) {
if (options?.timeZoneName === "shortGeneric") {
throw new RangeError(
"Value shortGeneric out of range for Intl.DateTimeFormat options property timeZoneName",
);
}
return new DateTimeFormat(locales, options);
});
updateClocks();
assert.equal(elements["#clock-local"].textContent, "");
assert.equal(elements["#clock-utc"].textContent, "");
});
// An app state in which, of the WAN targets, the first timedOut timed out,
// the next unreachable were found unreachable, the next answered answered
// after latency ms, and the rest have not been checked yet.
function stateAfter({ timedOut, unreachable, answered, latency }) {
const state = new AppState([]);
const results = [
...Array(timedOut).fill({ latency: null, error: "timeout" }),
...Array(unreachable).fill({ latency: null, error: "unreachable" }),
...Array(answered).fill({ latency, error: null }),
];
results.forEach((result, i) => state.wan[i].pushSample(Date.now(), result));
for (const host of state.wan.slice(timedOut, timedOut + answered)) {
host.pushSample(Date.now(), { latency, error: null });
}
return state;
}
// For each number the health is decided by, the rows put it one under, at
// and one over its threshold.
for (const { timedOut, unreachable = 0, answered, latency, health } of [
// and one over its threshold. A target found unreachable counts as one
// that timed out.
for (const { timedOut, answered, latency, health } of [
// Offline: more than 10 timed out and at most 4 answered.
{ timedOut: 9, answered: 4, latency: 30, health: "degraded" },
{ timedOut: 10, answered: 4, latency: 30, health: "degraded" },
@@ -829,24 +360,9 @@ for (const { timedOut, unreachable = 0, answered, latency, health } of [
{ timedOut: 0, answered: 4, latency: 1001, health: "slow" },
{ timedOut: 0, answered: 2, latency: 1001, health: "healthy" },
{ timedOut: 0, answered: 3, latency: 1001, health: "healthy" },
// A target found unreachable counts as one that timed out.
{
timedOut: 5,
unreachable: 6,
answered: 4,
latency: 30,
health: "offline",
},
{
timedOut: 0,
unreachable: 5,
answered: 10,
latency: 30,
health: "degraded",
},
]) {
test(`with ${timedOut} WAN targets timed out, ${unreachable} found unreachable and ${answered} answering after ${latency}ms, the health is ${health}`, () => {
const state = stateAfter({ timedOut, unreachable, answered, latency });
test(`with ${timedOut} WAN targets timed out and ${answered} answering after ${latency}ms, the health is ${health}`, () => {
const state = stateAfter({ timedOut, answered, latency });
assert.equal(state.healthStatus(), health);
});
}
test/viewport/README.md
+18 -19
View File
@@ -7,22 +7,22 @@ make frontend-viewport-test
```
It builds `dist/`, serves it from the same digest-pinned `nginx` image and the
same `configs/nginx.conf` the shipping container uses, drives a digest-pinned
headless Chrome against it over CDP, and asserts on computed layout at every
viewport width derived from the app's own CSS. Screenshots land in
`tmp/viewport/` alongside a `results.json`; they are artifacts for a human to
look at when something fails, not the evidence. The assertions are the evidence.
same `nginx.conf` the shipping container uses, drives a digest-pinned headless
Chrome against it over CDP, and asserts on computed layout at every viewport
width derived from the app's own CSS. Screenshots land in `tmp/viewport/`
alongside a `results.json`; they are artifacts for a human to look at when
something fails, not the evidence. The assertions are the evidence.
The target is deliberately outside `make check`: it takes minutes, and
`make test` has to stay under 60 seconds.
The target is deliberately outside `make check`: it needs Docker and takes
minutes, and `make test` has to stay under 20 seconds.
## How the widths are chosen
Not from a list of phone models. `viewports.js` parses the `@media` conditions
out of `web/src/styles.css` and scans `web/src/main.js` and `web/index.html` for
Tailwind responsive prefixes, then tests every breakpoint it finds at one pixel
below it, exactly on it, and one pixel above it. A generic 375px "phone" test
sails straight past an off-by-one at a media query boundary; `max-width: 768px`
out of `src/styles.css` and scans `src/main.js` and `index.html` for Tailwind
responsive prefixes, then tests every breakpoint it finds at one pixel below it,
exactly on it, and one pixel above it. A generic 375px "phone" test sails
straight past an off-by-one at a media query boundary; `max-width: 768px`
matches _at_ 768, and the sweep pins down which side of that line each layout is
on.
@@ -77,7 +77,7 @@ the internet, so the app's latency probes cannot reach anything real. The
harness answers them itself from a fixed delay table, with a deterministic
fraction failed outright, so the rows render a realistic spread of one-, two-
and three-digit latencies plus some unreachable rows. That spread is what the
layout has to survive; a `---` placeholder in every row would not exercise it.
layout has to survive; 24 identical `---` placeholders would not exercise it.
## What this cannot verify
@@ -104,11 +104,10 @@ Everything else this issue was actually about — does the layout reflow, does
anything overflow, is content clipped, are the controls big enough — is a
function of viewport width and CSS, and is covered above.
## Relation to the unit tests
## Relation to the unit test framework (#21)
Complementary layers, not two stacks. The unit tests in `test/unit/`, which
`make test` runs with Node's built-in test runner, exercise the functions
`web/src/main.js` exports in-process with no browser. This harness exercises
rendered layout in a real engine and is the only thing here that can see a media
query. Neither replaces the other; assertions about computed styles and element
geometry belong here, assertions about functions belong in `test/unit/`.
Complementary layers, not two stacks. `vitest` (#21) will exercise module-level
logic in-process with no browser. This harness exercises rendered layout in a
real engine and is the only thing here that can see a media query. Neither
replaces the other; assertions about computed styles and element geometry belong
here, assertions about functions belong in `vitest`.
test/viewport/harness.js
+1 -2
View File
@@ -51,8 +51,7 @@ const PROBE_DELAYS_MS = [2, 45, 123, 456, 780];
// offline row rendering is exercised too.
const UNREACHABLE_MODULUS = 7;
// The gateway candidate that "answers", so gateway detection succeeds and
// the Local Gateway row renders. Matches GATEWAY_CANDIDATES in
// web/src/main.js.
// the Local Gateway row renders. Matches GATEWAY_CANDIDATES in src/main.js.
const RESPONSIVE_GATEWAY = "http://192.168.1.1";
const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
test/viewport/viewports.js
+9 -10
View File
@@ -161,27 +161,26 @@ const ANCHOR_VIEWPORTS = [
export function deriveViewports(root) {
const conditions = [
...mediaConditionsFromCss(
readFileSync(join(root, "web/src/styles.css"), "utf8"),
"web/src/styles.css",
readFileSync(join(root, "src/styles.css"), "utf8"),
"src/styles.css",
),
...mediaConditionsFromMarkup([
{
path: "web/src/main.js",
text: readFileSync(join(root, "web/src/main.js"), "utf8"),
path: "src/main.js",
text: readFileSync(join(root, "src/main.js"), "utf8"),
},
{
path: "web/index.html",
text: readFileSync(join(root, "web/index.html"), "utf8"),
path: "index.html",
text: readFileSync(join(root, "index.html"), "utf8"),
},
]),
];
if (conditions.length === 0) {
throw new Error(
"no responsive breakpoints found in web/src/styles.css, " +
"web/src/main.js or web/index.html — either the responsive " +
"layout was deleted or this derivation has stopped matching " +
"the sources",
"no responsive breakpoints found in src/styles.css, src/main.js or " +
"index.html — either the responsive layout was deleted or this " +
"derivation has stopped matching the sources",
);
}
vite.config.js
-6
View File
@@ -6,10 +6,6 @@ const commitHash = execSync("git rev-parse --short HEAD").toString().trim();
const commitFull = execSync("git rev-parse HEAD").toString().trim();
export default defineConfig({
// The page's source is in web/; the build still goes to dist/ at the
// repo root, which Dockerfile and the viewport test serve. Vite
// empties only an outDir inside root unless told to.
root: "web",
plugins: [tailwindcss()],
server: {
// Proxy /api to a locally running netwatch-server so `yarn dev`
@@ -23,8 +19,6 @@ export default defineConfig({
__COMMIT_FULL__: JSON.stringify(commitFull),
},
build: {
outDir: "../dist",
emptyOutDir: true,
target: "esnext",
minify: "esbuild",
cssMinify: true,
yarn.lock
+193 -191
View File
@@ -20,25 +20,25 @@
hashery "^1.5.1"
keyv "^5.6.0"
"@emnapi/core@^1.11.1":
version "1.11.3"
resolved "https://registry.yarnpkg.com/@emnapi/core/-/core-1.11.3.tgz#5e95348a42cd1e06f0b9aa380cd74091daa4d520"
integrity sha512-zLpS5asjEb7lq8jYLq37N6XKaE41DIexlY1rF/z4/tIl3wo13Sqm28fRyfIsKZD+NZ8mM5RoKkpW/rBcuoSZSg==
"@emnapi/core@^1.7.1":
version "1.8.1"
resolved "https://registry.yarnpkg.com/@emnapi/core/-/core-1.8.1.tgz#fd9efe721a616288345ffee17a1f26ac5dd01349"
integrity sha512-AvT9QFpxK0Zd8J0jopedNm+w/2fIzvtPKPjqyw9jwvBaReTTqPBk9Hixaz7KbjimP+QNz605/XnjFcDAL2pqBg==
dependencies:
"@emnapi/wasi-threads" "1.2.3"
"@emnapi/wasi-threads" "1.1.0"
tslib "^2.4.0"
"@emnapi/runtime@^1.11.1":
version "1.11.3"
resolved "https://registry.yarnpkg.com/@emnapi/runtime/-/runtime-1.11.3.tgz#84257ae3b0531eb2aec1ffa23d70700da007ba95"
integrity sha512-Xz4Tpyki7XyrpbUK1jR1AhdAdaXyhhY4lZ3neLodmhpuWfy2PAQN5B46sAiU4liOXGLkHypn/qU+jvfWSCYYLA==
"@emnapi/runtime@^1.7.1":
version "1.8.1"
resolved "https://registry.yarnpkg.com/@emnapi/runtime/-/runtime-1.8.1.tgz#550fa7e3c0d49c5fb175a116e8cd70614f9a22a5"
integrity sha512-mehfKSMWjjNol8659Z8KxEMrdSJDDot5SXMq00dM8BN4o+CLNXQ0xH2V7EchNHV4RmbZLmmPdEaXZc5H2FXmDg==
dependencies:
tslib "^2.4.0"
"@emnapi/wasi-threads@1.2.3", "@emnapi/wasi-threads@^1.2.2":
version "1.2.3"
resolved "https://registry.yarnpkg.com/@emnapi/wasi-threads/-/wasi-threads-1.2.3.tgz#c9bf72fd4be5b928aee894820e8d814ed73916e9"
integrity sha512-ELEBe8PsLvvJ6QMr0zLt8ffvOHW/dc1m3CEzNMg7aJUv3bMaoDtw2TXyDAwkYBuroxxuHEwhRTLJSe5sya547g==
"@emnapi/wasi-threads@1.1.0", "@emnapi/wasi-threads@^1.1.0":
version "1.1.0"
resolved "https://registry.yarnpkg.com/@emnapi/wasi-threads/-/wasi-threads-1.1.0.tgz#60b2102fddc9ccb78607e4a3cf8403ea69be41bf"
integrity sha512-WI0DdZ8xFSbgMjR1sFsKABJ/C5OnRrjT06JXbZKexJGrDuPTzZdDYfFlsgcCXCyf+suG5QU2e/y1Wo2V/OapLQ==
dependencies:
tslib "^2.4.0"
@@ -264,7 +264,7 @@
"@jridgewell/sourcemap-codec" "^1.5.0"
"@jridgewell/trace-mapping" "^0.3.24"
"@jridgewell/remapping@^2.3.5":
"@jridgewell/remapping@^2.3.4":
version "2.3.5"
resolved "https://registry.yarnpkg.com/@jridgewell/remapping/-/remapping-2.3.5.tgz#375c476d1972947851ba1e15ae8f123047445aa1"
integrity sha512-LI9u/+laYG4Ds1TDKSJW2YPrIlcVYOwi2fUC6xB43lueCjgxV4lffOCZCtYFiH6TNOX+tQKXx97T4IKHbhyHEQ==
@@ -278,9 +278,9 @@
integrity sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw==
"@jridgewell/sourcemap-codec@^1.4.14", "@jridgewell/sourcemap-codec@^1.5.0", "@jridgewell/sourcemap-codec@^1.5.5":
version "1.6.0"
resolved "https://registry.yarnpkg.com/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.6.0.tgz#f4c663e862f06dc98ca4d453862c46902789a18d"
integrity sha512-T7jf+5zgsZHwNJ4lvQ7/aezbyk0nNX+zJVWpmHA7VYsEx7a7qr5Rg5IbtJFqkgze5Y2sruq1RUY8Q837Od7iFw==
version "1.5.5"
resolved "https://registry.yarnpkg.com/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.5.tgz#6912b00d2c631c0d15ce1a7ab57cd657f2a8f8ba"
integrity sha512-cYQ9310grqxueWbl+WuIUIaiUaDcj7WOq5fVhEljNVgRfOUhY9fy2zTvfoqWsnebh8Sl70VScFbICvJnLKB0Og==
"@jridgewell/trace-mapping@^0.3.24":
version "0.3.31"
@@ -303,12 +303,14 @@
resolved "https://registry.yarnpkg.com/@keyv/serialize/-/serialize-1.1.1.tgz#0c01dd3a3483882af7cf3878d4e71d505c81fc4a"
integrity sha512-dXn3FZhPv0US+7dtJsIi2R+c7qWYiReoEh5zUntWCf4oSpMNib8FDhSoed6m3QyZdx5hK7iLFkYk3rNxwt8vTA==
"@napi-rs/wasm-runtime@^1.1.4":
version "1.2.4"
resolved "https://registry.yarnpkg.com/@napi-rs/wasm-runtime/-/wasm-runtime-1.2.4.tgz#ae38d9ea8483942054c5d82f00c0163374cd1e5f"
integrity sha512-AJxoUD2/15ESHbvpcyjU274nsAPLuOtPHCk0vKJM5pj//Fg/B1FXNWjPnXTT9PymCYYiHo4zPj0ZomXBKhoy7g==
"@napi-rs/wasm-runtime@^1.1.0":
version "1.1.1"
resolved "https://registry.yarnpkg.com/@napi-rs/wasm-runtime/-/wasm-runtime-1.1.1.tgz#c3705ab549d176b8dc5172723d6156c3dc426af2"
integrity sha512-p64ah1M1ld8xjWv3qbvFwHiFVWrq1yFvV4f7w+mzaqiR4IlSgkqhcRdHwsGgomwzBH51sRY4NEowLxnaBjcW/A==
dependencies:
"@tybys/wasm-util" "^0.10.3"
"@emnapi/core" "^1.7.1"
"@emnapi/runtime" "^1.7.1"
"@tybys/wasm-util" "^0.10.1"
"@puppeteer/browsers@3.1.0":
version "3.1.0"
@@ -443,117 +445,117 @@
resolved "https://registry.yarnpkg.com/@rollup/rollup-win32-x64-msvc/-/rollup-win32-x64-msvc-4.57.0.tgz#6f38851da1123ac0380121108abd31ff21205c3d"
integrity sha512-Zv7v6q6aV+VslnpwzqKAmrk5JdVkLUzok2208ZXGipjb+msxBr/fJPZyeEXiFgH7k62Ak0SLIfxQRZQvTuf7rQ==
"@tailwindcss/node@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/node/-/node-4.3.3.tgz#38ff04309ff036ea3589a7bad9069c44ec9d3883"
integrity sha512-/T8IKEsf9VTU6tLjgC7+sv2mOPtQxzE2jMw7u4Tt40Tx+QSZxpzh95/H6cMKoja9XuW7iMdLJYBB0o9G1CaAgg==
"@tailwindcss/node@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/node/-/node-4.1.18.tgz#9863be0d26178638794a38d6c7c14666fb992e8a"
integrity sha512-DoR7U1P7iYhw16qJ49fgXUlry1t4CpXeErJHnQ44JgTSKMaZUdf17cfn5mHchfJ4KRBZRFA/Coo+MUF5+gOaCQ==
dependencies:
"@jridgewell/remapping" "^2.3.5"
enhanced-resolve "^5.24.1"
jiti "^2.7.0"
lightningcss "1.32.0"
"@jridgewell/remapping" "^2.3.4"
enhanced-resolve "^5.18.3"
jiti "^2.6.1"
lightningcss "1.30.2"
magic-string "^0.30.21"
source-map-js "^1.2.1"
tailwindcss "4.3.3"
tailwindcss "4.1.18"
"@tailwindcss/oxide-android-arm64@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-android-arm64/-/oxide-android-arm64-4.3.3.tgz#848f93034155daf7892185028dfb18143bfc7d07"
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"@tailwindcss/oxide-android-arm64@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-android-arm64/-/oxide-android-arm64-4.1.18.tgz#79717f87e90135e5d3d23a3d3aecde4ca5595dd5"
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"@tailwindcss/oxide-darwin-arm64@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-darwin-arm64/-/oxide-darwin-arm64-4.3.3.tgz#5c779e32c1c361beb75136fd8e2c627fcb9a5b28"
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"@tailwindcss/oxide-darwin-arm64@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-darwin-arm64/-/oxide-darwin-arm64-4.1.18.tgz#7fa47608d62d60e9eb020682249d20159667fbb0"
integrity sha512-Gc2q4Qhs660bhjyBSKgq6BYvwDz4G+BuyJ5H1xfhmDR3D8HnHCmT/BSkvSL0vQLy/nkMLY20PQ2OoYMO15Jd0A==
"@tailwindcss/oxide-darwin-x64@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-darwin-x64/-/oxide-darwin-x64-4.3.3.tgz#ba292ff52fa3264139f7fe7874719ce0a4666875"
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"@tailwindcss/oxide-darwin-x64@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-darwin-x64/-/oxide-darwin-x64-4.1.18.tgz#c05991c85aa2af47bf9d1f8172fe9e4636591e79"
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"@tailwindcss/oxide-freebsd-x64@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-freebsd-x64/-/oxide-freebsd-x64-4.3.3.tgz#07e589487b9a636235a4ade48cefc1f9eeeec57f"
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"@tailwindcss/oxide-freebsd-x64@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-freebsd-x64/-/oxide-freebsd-x64-4.1.18.tgz#3d48e8d79fd08ece0e02af8e72d5059646be34d0"
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"@tailwindcss/oxide-linux-arm-gnueabihf@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-arm-gnueabihf/-/oxide-linux-arm-gnueabihf-4.3.3.tgz#0c8abc228d9e19e0065ddb707eba52e21855b3ff"
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"@tailwindcss/oxide-linux-arm-gnueabihf@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-arm-gnueabihf/-/oxide-linux-arm-gnueabihf-4.1.18.tgz#982ecd1a65180807ccfde67dc17c6897f2e50aa8"
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"@tailwindcss/oxide-linux-arm64-gnu@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-arm64-gnu/-/oxide-linux-arm64-gnu-4.3.3.tgz#5067dc7afd15d2b97adc77a91177dc4bec8d1b8b"
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"@tailwindcss/oxide-linux-arm64-gnu@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-arm64-gnu/-/oxide-linux-arm64-gnu-4.1.18.tgz#df49357bc9737b2e9810ea950c1c0647ba6573c3"
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"@tailwindcss/oxide-linux-arm64-musl@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-arm64-musl/-/oxide-linux-arm64-musl-4.3.3.tgz#29ae5f279be2ce64db368711985b6ad8e4562e57"
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"@tailwindcss/oxide-linux-arm64-musl@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-arm64-musl/-/oxide-linux-arm64-musl-4.1.18.tgz#b266c12822bf87883cf152615f8fffb8519d689c"
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"@tailwindcss/oxide-linux-x64-gnu@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-x64-gnu/-/oxide-linux-x64-gnu-4.3.3.tgz#7d693b40f69875744b499481359b227fd3ac3a3c"
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"@tailwindcss/oxide-linux-x64-gnu@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-x64-gnu/-/oxide-linux-x64-gnu-4.1.18.tgz#5c737f13dd9529b25b314e6000ff54e05b3811da"
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"@tailwindcss/oxide-linux-x64-musl@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-x64-musl/-/oxide-linux-x64-musl-4.3.3.tgz#6a55d664f47c5ff9ad3f46bf05fe07d410b8cfd8"
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"@tailwindcss/oxide-linux-x64-musl@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-linux-x64-musl/-/oxide-linux-x64-musl-4.1.18.tgz#3380e17f7be391f1ef924be9f0afe1f304fe3478"
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"@tailwindcss/oxide-wasm32-wasi@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-wasm32-wasi/-/oxide-wasm32-wasi-4.3.3.tgz#408a9bc620e68f1aaf0dfea33da7bd3b65f9e2ef"
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"@tailwindcss/oxide-wasm32-wasi@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-wasm32-wasi/-/oxide-wasm32-wasi-4.1.18.tgz#9464df0e28a499aab1c55e97682be37b3a656c88"
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dependencies:
"@emnapi/core" "^1.11.1"
"@emnapi/runtime" "^1.11.1"
"@emnapi/wasi-threads" "^1.2.2"
"@napi-rs/wasm-runtime" "^1.1.4"
"@tybys/wasm-util" "^0.10.2"
tslib "^2.8.1"
"@emnapi/core" "^1.7.1"
"@emnapi/runtime" "^1.7.1"
"@emnapi/wasi-threads" "^1.1.0"
"@napi-rs/wasm-runtime" "^1.1.0"
"@tybys/wasm-util" "^0.10.1"
tslib "^2.4.0"
"@tailwindcss/oxide-win32-arm64-msvc@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-win32-arm64-msvc/-/oxide-win32-arm64-msvc-4.3.3.tgz#3d582b00180fa4680e0b6c90be69fa5f4a209092"
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"@tailwindcss/oxide-win32-arm64-msvc@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-win32-arm64-msvc/-/oxide-win32-arm64-msvc-4.1.18.tgz#bbcdd59c628811f6a0a4d5b09616967d8fb0c4d4"
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"@tailwindcss/oxide-win32-x64-msvc@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-win32-x64-msvc/-/oxide-win32-x64-msvc-4.3.3.tgz#ce4c663fef3b4fde67611a4c1391866f8c0aa79b"
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"@tailwindcss/oxide-win32-x64-msvc@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide-win32-x64-msvc/-/oxide-win32-x64-msvc-4.1.18.tgz#9c628d04623aa4c3536c508289f58d58ba4b3fb1"
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"@tailwindcss/oxide@4.3.3":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide/-/oxide-4.3.3.tgz#6266109d025cfcb04f8e4c58954a6f630a415b7f"
integrity sha512-krXjAikiaFSPaK/FkAQT5UTx3VormQaiZ5hBFlJZ9UFQGB/rwg1MZIhHAG9smMQRTdyJxP6Qt5MwMtdyU5FWrA==
"@tailwindcss/oxide@4.1.18":
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/oxide/-/oxide-4.1.18.tgz#c8335cd0a83e9880caecd60abf7904f43ebab582"
integrity sha512-EgCR5tTS5bUSKQgzeMClT6iCY3ToqE1y+ZB0AKldj809QXk1Y+3jB0upOYZrn9aGIzPtUsP7sX4QQ4XtjBB95A==
optionalDependencies:
"@tailwindcss/oxide-android-arm64" "4.3.3"
"@tailwindcss/oxide-darwin-arm64" "4.3.3"
"@tailwindcss/oxide-darwin-x64" "4.3.3"
"@tailwindcss/oxide-freebsd-x64" "4.3.3"
"@tailwindcss/oxide-linux-arm-gnueabihf" "4.3.3"
"@tailwindcss/oxide-linux-arm64-gnu" "4.3.3"
"@tailwindcss/oxide-linux-arm64-musl" "4.3.3"
"@tailwindcss/oxide-linux-x64-gnu" "4.3.3"
"@tailwindcss/oxide-linux-x64-musl" "4.3.3"
"@tailwindcss/oxide-wasm32-wasi" "4.3.3"
"@tailwindcss/oxide-win32-arm64-msvc" "4.3.3"
"@tailwindcss/oxide-win32-x64-msvc" "4.3.3"
"@tailwindcss/oxide-android-arm64" "4.1.18"
"@tailwindcss/oxide-darwin-arm64" "4.1.18"
"@tailwindcss/oxide-darwin-x64" "4.1.18"
"@tailwindcss/oxide-freebsd-x64" "4.1.18"
"@tailwindcss/oxide-linux-arm-gnueabihf" "4.1.18"
"@tailwindcss/oxide-linux-arm64-gnu" "4.1.18"
"@tailwindcss/oxide-linux-arm64-musl" "4.1.18"
"@tailwindcss/oxide-linux-x64-gnu" "4.1.18"
"@tailwindcss/oxide-linux-x64-musl" "4.1.18"
"@tailwindcss/oxide-wasm32-wasi" "4.1.18"
"@tailwindcss/oxide-win32-arm64-msvc" "4.1.18"
"@tailwindcss/oxide-win32-x64-msvc" "4.1.18"
"@tailwindcss/vite@^4.1.18":
version "4.3.3"
resolved "https://registry.yarnpkg.com/@tailwindcss/vite/-/vite-4.3.3.tgz#1f4037badcb5e6c6bb574d3d8a0172c83f26b97f"
integrity sha512-yYU8cogLeSh/ms2jh8Fj7jaba/EWa7Ja6GoUqYZaraEuCI5YS6ms6ObZgjjedm+jm6XZjdNRWBpPP6Z86oOxcw==
version "4.1.18"
resolved "https://registry.yarnpkg.com/@tailwindcss/vite/-/vite-4.1.18.tgz#614b9d5483559518c72d31bca05d686f8df28e9a"
integrity sha512-jVA+/UpKL1vRLg6Hkao5jldawNmRo7mQYrZtNHMIVpLfLhDml5nMRUo/8MwoX2vNXvnaXNNMedrMfMugAVX1nA==
dependencies:
"@tailwindcss/node" "4.3.3"
"@tailwindcss/oxide" "4.3.3"
tailwindcss "4.3.3"
"@tailwindcss/node" "4.1.18"
"@tailwindcss/oxide" "4.1.18"
tailwindcss "4.1.18"
"@tybys/wasm-util@^0.10.2", "@tybys/wasm-util@^0.10.3":
version "0.10.4"
resolved "https://registry.yarnpkg.com/@tybys/wasm-util/-/wasm-util-0.10.4.tgz#3e85ecb266f9d1722250e89bc69528615720b154"
integrity sha512-W3c4gRigFS0T/Ma4qIYF3GDAc5AQdHb1yL5znJT1Zv1YaD9Kitx656wBjvr19qbiosmZT8lWDM5BEMynUqX65A==
"@tybys/wasm-util@^0.10.1":
version "0.10.1"
resolved "https://registry.yarnpkg.com/@tybys/wasm-util/-/wasm-util-0.10.1.tgz#ecddd3205cf1e2d5274649ff0eedd2991ed7f414"
integrity sha512-9tTaPJLSiejZKx+Bmog4uSubteqTvFrVrURwkmHixBo0G4seD0zUxp98E1DzUBJxLQ3NPwXrGKDiVjwx/DpPsg==
dependencies:
tslib "^2.4.0"
@@ -720,13 +722,13 @@ emoji-regex@^10.3.0:
resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-10.6.0.tgz#bf3d6e8f7f8fd22a65d9703475bc0147357a6b0d"
integrity sha512-toUI84YS5YmxW219erniWD0CIVOo46xGKColeNQRgOzDorgBi1v4D71/OFzgD9GO2UGKIv1C3Sp8DAn0+j5w7A==
enhanced-resolve@^5.24.1:
version "5.26.0"
resolved "https://registry.yarnpkg.com/enhanced-resolve/-/enhanced-resolve-5.26.0.tgz#9dfb47d050ed6c87f2c6d43b4d7e30f8c0a91ed7"
integrity sha512-9vhedylFonb2YGogzUKX6+Ja72gOJbN1QHAqdrvqLwhdl/QWbKopzoUC9EbQNVsAns/bx/4uyqalrQAoy1IByw==
enhanced-resolve@^5.18.3:
version "5.18.4"
resolved "https://registry.yarnpkg.com/enhanced-resolve/-/enhanced-resolve-5.18.4.tgz#c22d33055f3952035ce6a144ce092447c525f828"
integrity sha512-LgQMM4WXU3QI+SYgEc2liRgznaD5ojbmY3sb8LxyguVkIg5FxdpTkvk72te2R38/TGKxH634oLxXRGY6d7AP+Q==
dependencies:
graceful-fs "^4.2.4"
tapable "^2.3.3"
tapable "^2.2.0"
esbuild@^0.27.0:
version "0.27.2"
@@ -989,10 +991,10 @@ isexe@^2.0.0:
resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
integrity sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==
jiti@^2.7.0:
version "2.7.0"
resolved "https://registry.yarnpkg.com/jiti/-/jiti-2.7.0.tgz#974228f2f4ca2bc21885a1797b45fea68e950c64"
integrity sha512-AC/7JofJvZGrrneWNaEnJeOLUx+JlGt7tNa0wZiRPT4MY1wmfKjt2+6O2p2uz2+skll8OZZmJMNqeke7kKbNgQ==
jiti@^2.6.1:
version "2.6.1"
resolved "https://registry.yarnpkg.com/jiti/-/jiti-2.6.1.tgz#178ef2fc9a1a594248c20627cd820187a4d78d92"
integrity sha512-ekilCSN1jwRvIbgeg/57YFh8qQDNbwDb9xT/qu2DAHbFFZUicIl4ygVaAvzveMhMVr3LnpSKTNnwt8PoOfmKhQ==
json-schema-traverse@^0.4.1:
version "0.4.1"
@@ -1019,79 +1021,79 @@ levn@^0.4.1:
prelude-ls "^1.2.1"
type-check "~0.4.0"
lightningcss-android-arm64@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-android-arm64/-/lightningcss-android-arm64-1.32.0.tgz#f033885116dfefd9c6f54787523e3514b61e1968"
integrity sha512-YK7/ClTt4kAK0vo6w3X+Pnm0D2cf2vPHbhOXdoNti1Ga0al1P4TBZhwjATvjNwLEBCnKvjJc2jQgHXH0NEwlAg==
lightningcss-android-arm64@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-android-arm64/-/lightningcss-android-arm64-1.30.2.tgz#6966b7024d39c94994008b548b71ab360eb3a307"
integrity sha512-BH9sEdOCahSgmkVhBLeU7Hc9DWeZ1Eb6wNS6Da8igvUwAe0sqROHddIlvU06q3WyXVEOYDZ6ykBZQnjTbmo4+A==
lightningcss-darwin-arm64@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-darwin-arm64/-/lightningcss-darwin-arm64-1.32.0.tgz#50b71871b01c8199584b649e292547faea7af9b5"
integrity sha512-RzeG9Ju5bag2Bv1/lwlVJvBE3q6TtXskdZLLCyfg5pt+HLz9BqlICO7LZM7VHNTTn/5PRhHFBSjk5lc4cmscPQ==
lightningcss-darwin-arm64@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-darwin-arm64/-/lightningcss-darwin-arm64-1.30.2.tgz#a5fa946d27c029e48c7ff929e6e724a7de46eb2c"
integrity sha512-ylTcDJBN3Hp21TdhRT5zBOIi73P6/W0qwvlFEk22fkdXchtNTOU4Qc37SkzV+EKYxLouZ6M4LG9NfZ1qkhhBWA==
lightningcss-darwin-x64@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-darwin-x64/-/lightningcss-darwin-x64-1.32.0.tgz#35f3e97332d130b9ca181e11b568ded6aebc6d5e"
integrity sha512-U+QsBp2m/s2wqpUYT/6wnlagdZbtZdndSmut/NJqlCcMLTWp5muCrID+K5UJ6jqD2BFshejCYXniPDbNh73V8w==
lightningcss-darwin-x64@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-darwin-x64/-/lightningcss-darwin-x64-1.30.2.tgz#5ce87e9cd7c4f2dcc1b713f5e8ee185c88d9b7cd"
integrity sha512-oBZgKchomuDYxr7ilwLcyms6BCyLn0z8J0+ZZmfpjwg9fRVZIR5/GMXd7r9RH94iDhld3UmSjBM6nXWM2TfZTQ==
lightningcss-freebsd-x64@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-freebsd-x64/-/lightningcss-freebsd-x64-1.32.0.tgz#9777a76472b64ed6ff94342ad64c7bafd794a575"
integrity sha512-JCTigedEksZk3tHTTthnMdVfGf61Fky8Ji2E4YjUTEQX14xiy/lTzXnu1vwiZe3bYe0q+SpsSH/CTeDXK6WHig==
lightningcss-freebsd-x64@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-freebsd-x64/-/lightningcss-freebsd-x64-1.30.2.tgz#6ae1d5e773c97961df5cff57b851807ef33692a5"
integrity sha512-c2bH6xTrf4BDpK8MoGG4Bd6zAMZDAXS569UxCAGcA7IKbHNMlhGQ89eRmvpIUGfKWNVdbhSbkQaWhEoMGmGslA==
lightningcss-linux-arm-gnueabihf@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-linux-arm-gnueabihf/-/lightningcss-linux-arm-gnueabihf-1.32.0.tgz#13ae652e1ab73b9135d7b7da172f666c410ad53d"
integrity sha512-x6rnnpRa2GL0zQOkt6rts3YDPzduLpWvwAF6EMhXFVZXD4tPrBkEFqzGowzCsIWsPjqSK+tyNEODUBXeeVHSkw==
lightningcss-linux-arm-gnueabihf@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-linux-arm-gnueabihf/-/lightningcss-linux-arm-gnueabihf-1.30.2.tgz#62c489610c0424151a6121fa99d77731536cdaeb"
integrity sha512-eVdpxh4wYcm0PofJIZVuYuLiqBIakQ9uFZmipf6LF/HRj5Bgm0eb3qL/mr1smyXIS1twwOxNWndd8z0E374hiA==
lightningcss-linux-arm64-gnu@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-linux-arm64-gnu/-/lightningcss-linux-arm64-gnu-1.32.0.tgz#417858795a94592f680123a1b1f9da8a0e1ef335"
integrity sha512-0nnMyoyOLRJXfbMOilaSRcLH3Jw5z9HDNGfT/gwCPgaDjnx0i8w7vBzFLFR1f6CMLKF8gVbebmkUN3fa/kQJpQ==
lightningcss-linux-arm64-gnu@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-linux-arm64-gnu/-/lightningcss-linux-arm64-gnu-1.30.2.tgz#2a3661b56fe95a0cafae90be026fe0590d089298"
integrity sha512-UK65WJAbwIJbiBFXpxrbTNArtfuznvxAJw4Q2ZGlU8kPeDIWEX1dg3rn2veBVUylA2Ezg89ktszWbaQnxD/e3A==
lightningcss-linux-arm64-musl@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-linux-arm64-musl/-/lightningcss-linux-arm64-musl-1.32.0.tgz#6be36692e810b718040802fd809623cffe732133"
integrity sha512-UpQkoenr4UJEzgVIYpI80lDFvRmPVg6oqboNHfoH4CQIfNA+HOrZ7Mo7KZP02dC6LjghPQJeBsvXhJod/wnIBg==
lightningcss-linux-arm64-musl@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-linux-arm64-musl/-/lightningcss-linux-arm64-musl-1.30.2.tgz#d7ddd6b26959245e026bc1ad9eb6aa983aa90e6b"
integrity sha512-5Vh9dGeblpTxWHpOx8iauV02popZDsCYMPIgiuw97OJ5uaDsL86cnqSFs5LZkG3ghHoX5isLgWzMs+eD1YzrnA==
lightningcss-linux-x64-gnu@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-linux-x64-gnu/-/lightningcss-linux-x64-gnu-1.32.0.tgz#0b7803af4eb21cfd38dd39fe2abbb53c7dd091f6"
integrity sha512-V7Qr52IhZmdKPVr+Vtw8o+WLsQJYCTd8loIfpDaMRWGUZfBOYEJeyJIkqGIDMZPwPx24pUMfwSxxI8phr/MbOA==
lightningcss-linux-x64-gnu@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-linux-x64-gnu/-/lightningcss-linux-x64-gnu-1.30.2.tgz#5a89814c8e63213a5965c3d166dff83c36152b1a"
integrity sha512-Cfd46gdmj1vQ+lR6VRTTadNHu6ALuw2pKR9lYq4FnhvgBc4zWY1EtZcAc6EffShbb1MFrIPfLDXD6Xprbnni4w==
lightningcss-linux-x64-musl@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-linux-x64-musl/-/lightningcss-linux-x64-musl-1.32.0.tgz#88dc8ba865ddddb1ac5ef04b0f161804418c163b"
integrity sha512-bYcLp+Vb0awsiXg/80uCRezCYHNg1/l3mt0gzHnWV9XP1W5sKa5/TCdGWaR/zBM2PeF/HbsQv/j2URNOiVuxWg==
lightningcss-linux-x64-musl@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-linux-x64-musl/-/lightningcss-linux-x64-musl-1.30.2.tgz#808c2e91ce0bf5d0af0e867c6152e5378c049728"
integrity sha512-XJaLUUFXb6/QG2lGIW6aIk6jKdtjtcffUT0NKvIqhSBY3hh9Ch+1LCeH80dR9q9LBjG3ewbDjnumefsLsP6aiA==
lightningcss-win32-arm64-msvc@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-win32-arm64-msvc/-/lightningcss-win32-arm64-msvc-1.32.0.tgz#4f30ba3fa5e925f5b79f945e8cc0d176c3b1ab38"
integrity sha512-8SbC8BR40pS6baCM8sbtYDSwEVQd4JlFTOlaD3gWGHfThTcABnNDBda6eTZeqbofalIJhFx0qKzgHJmcPTnGdw==
lightningcss-win32-arm64-msvc@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-win32-arm64-msvc/-/lightningcss-win32-arm64-msvc-1.30.2.tgz#ab4a8a8a2e6a82a4531e8bbb6bf0ff161ee6625a"
integrity sha512-FZn+vaj7zLv//D/192WFFVA0RgHawIcHqLX9xuWiQt7P0PtdFEVaxgF9rjM/IRYHQXNnk61/H/gb2Ei+kUQ4xQ==
lightningcss-win32-x64-msvc@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss-win32-x64-msvc/-/lightningcss-win32-x64-msvc-1.32.0.tgz#141aa5605645064928902bb4af045fa7d9f4220a"
integrity sha512-Amq9B/SoZYdDi1kFrojnoqPLxYhQ4Wo5XiL8EVJrVsB8ARoC1PWW6VGtT0WKCemjy8aC+louJnjS7U18x3b06Q==
lightningcss-win32-x64-msvc@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss-win32-x64-msvc/-/lightningcss-win32-x64-msvc-1.30.2.tgz#f01f382c8e0a27e1c018b0bee316d210eac43b6e"
integrity sha512-5g1yc73p+iAkid5phb4oVFMB45417DkRevRbt/El/gKXJk4jid+vPFF/AXbxn05Aky8PapwzZrdJShv5C0avjw==
lightningcss@1.32.0:
version "1.32.0"
resolved "https://registry.yarnpkg.com/lightningcss/-/lightningcss-1.32.0.tgz#b85aae96486dcb1bf49a7c8571221273f4f1e4a9"
integrity sha512-NXYBzinNrblfraPGyrbPoD19C1h9lfI/1mzgWYvXUTe414Gz/X1FD2XBZSZM7rRTrMA8JL3OtAaGifrIKhQ5yQ==
lightningcss@1.30.2:
version "1.30.2"
resolved "https://registry.yarnpkg.com/lightningcss/-/lightningcss-1.30.2.tgz#4ade295f25d140f487d37256f4cd40dc607696d0"
integrity sha512-utfs7Pr5uJyyvDETitgsaqSyjCb2qNRAtuqUeWIAKztsOYdcACf2KtARYXg2pSvhkt+9NfoaNY7fxjl6nuMjIQ==
dependencies:
detect-libc "^2.0.3"
optionalDependencies:
lightningcss-android-arm64 "1.32.0"
lightningcss-darwin-arm64 "1.32.0"
lightningcss-darwin-x64 "1.32.0"
lightningcss-freebsd-x64 "1.32.0"
lightningcss-linux-arm-gnueabihf "1.32.0"
lightningcss-linux-arm64-gnu "1.32.0"
lightningcss-linux-arm64-musl "1.32.0"
lightningcss-linux-x64-gnu "1.32.0"
lightningcss-linux-x64-musl "1.32.0"
lightningcss-win32-arm64-msvc "1.32.0"
lightningcss-win32-x64-msvc "1.32.0"
lightningcss-android-arm64 "1.30.2"
lightningcss-darwin-arm64 "1.30.2"
lightningcss-darwin-x64 "1.30.2"
lightningcss-freebsd-x64 "1.30.2"
lightningcss-linux-arm-gnueabihf "1.30.2"
lightningcss-linux-arm64-gnu "1.30.2"
lightningcss-linux-arm64-musl "1.30.2"
lightningcss-linux-x64-gnu "1.30.2"
lightningcss-linux-x64-musl "1.30.2"
lightningcss-win32-arm64-msvc "1.30.2"
lightningcss-win32-x64-msvc "1.30.2"
locate-path@^6.0.0:
version "6.0.0"
@@ -1285,9 +1287,9 @@ shebang-regex@^3.0.0:
integrity sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==
source-map-js@^1.2.1:
version "1.2.2"
resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.2.2.tgz#79fb88d97535a21cb27162cb05d211b67acea4ab"
integrity sha512-KGj/8Y43x35aZVDtt+J4mK1hoLGHULMYfSkODJNQjNDC3oW1PqPoxMwo0pLUsWM/UEGzON/NxeHywEfNXNP3Vw==
version "1.2.1"
resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.2.1.tgz#1ce5650fddd87abc099eda37dcff024c2667ae46"
integrity sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==
string-width@^7.0.0, string-width@^7.2.0:
version "7.2.0"
@@ -1313,15 +1315,15 @@ strip-ansi@^7.1.0, strip-ansi@^7.1.2:
dependencies:
ansi-regex "^6.2.2"
tailwindcss@4.3.3, tailwindcss@^4.1.18:
version "4.3.3"
resolved "https://registry.yarnpkg.com/tailwindcss/-/tailwindcss-4.3.3.tgz#c006861611c213c1877893ab5b23daa16be2bb55"
integrity sha512-gOhV3P7ufE62QDGg1zVaTgCR+EtPv92k2nIhVcVKcLmxT1sUBsQGhnZj175j+MqRt4zLF7ic+sCYjfhxMxj7YQ==
tailwindcss@4.1.18, tailwindcss@^4.1.18:
version "4.1.18"
resolved "https://registry.yarnpkg.com/tailwindcss/-/tailwindcss-4.1.18.tgz#f488ba47853abdb5354daf9679d3e7791fc4f4e3"
integrity sha512-4+Z+0yiYyEtUVCScyfHCxOYP06L5Ne+JiHhY2IjR2KWMIWhJOYZKLSGZaP5HkZ8+bY0cxfzwDE5uOmzFXyIwxw==
tapable@^2.3.3:
version "2.3.3"
resolved "https://registry.yarnpkg.com/tapable/-/tapable-2.3.3.tgz#5da7c9992c46038221267985ab28421a8879f160"
integrity sha512-uxc/zpqFg6x7C8vOE7lh6Lbda8eEL9zmVm/PLeTPBRhh1xCgdWaQ+J1CUieGpIfm2HdtsUpRv+HshiasBMcc6A==
tapable@^2.2.0:
version "2.3.0"
resolved "https://registry.yarnpkg.com/tapable/-/tapable-2.3.0.tgz#7e3ea6d5ca31ba8e078b560f0d83ce9a14aa8be6"
integrity sha512-g9ljZiwki/LfxmQADO3dEY1CbpmXT5Hm2fJ+QaGKwSXUylMybePR7/67YW7jOrrvjEgL1Fmz5kzyAjWVWLlucg==
tinyglobby@^0.2.15:
version "0.2.15"
@@ -1331,7 +1333,7 @@ tinyglobby@^0.2.15:
fdir "^6.5.0"
picomatch "^4.0.3"
tslib@^2.4.0, tslib@^2.8.1:
tslib@^2.4.0:
version "2.8.1"
resolved "https://registry.yarnpkg.com/tslib/-/tslib-2.8.1.tgz#612efe4ed235d567e8aba5f2a5fab70280ade83f"
integrity sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==