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Details

config: stop startup on an invalid DNS or TLS interval (closes #177 )

DNSWATCHER_DNS_INTERVAL and DNSWATCHER_TLS_INTERVAL were parsed with
time.ParseDuration and silently replaced by the default when that failed,
so a value like 5 or 1d gave hourly checks with no hint why, and zero or
negative values were accepted. Both now go through parseInterval, which
returns an error naming the variable and the value, and startup stops the
same way it does for invalid targets. An unset or empty variable still gets
its default from setupViper. The three tests that pinned the old fallback
are replaced. The README says what a valid value looks like.

Model: opus-5-5

2026-10-01 20:02:30 +00:00

6.2 KiB

Raw Blame History

Workflow

branch (from next)
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
open a PR against next

Status

pre-1.0. No git tags. Work lands on next by PR. Open work for 1.0 is tracked on the 1.0 milestone: https://git.eeqj.de/sneak/dnswatcher/milestone/7

Next Step

NS failure and NS recovery notifications: #104

Completed Steps

2026-10-01: a DNSWATCHER_DNS_INTERVAL or DNSWATCHER_TLS_INTERVAL that is not a positive duration stops startup; empty means the default (closes #177).
2026-10-01: the image built by make docker reports the git describe version, not dev, and the startup log now shows it (closes #109).
2026-10-01: two notify shutdown tests always release the delivery they hold, so a drain that returns early fails them instead of hanging (closes #176).
2026-10-01: script/install-precommit asks git for the repository's git directory, so make hooks also works where .git is a file (closes #129).
2026-10-01: TODO.md brought up to date: open issues listed by URL, every Completed Steps entry cut to at most two lines (closes #146).
2026-10-01: wildcard CORS now applies only to the public routes, not to /metrics, and allows only the methods they serve (closes #100).
2026-10-01: internal/state and internal/watcher no longer export test-only constructors: two moved to export_test.go, one is deleted (closes #111).
2026-10-01: notify shutdown tests use one timing constant per meaning, name the bound they check, and require the drain's debug line (closes #116).
2026-09-29: the entrypoint chowns the data directory to dnswatcher and runs dnswatcher as that user, so a host bind mount needs no chown (closes #166).
2026-09-29: the live-DNS test package is renamed internal/livednstest; make lint fails when program code imports it (closes #164).
2026-09-29: .golangci.yml re-fetched from sneak/prompts, with gomodguard_v2 and the org depguard test-support rule (closes #123).
2026-09-29: watcher and resolver tests that look something up in DNS use the real resolver against live DNS servers (closes #159).
2026-09-28: the inconsistency alert is sent once, when two nameservers start to disagree; every pair of nameservers is compared (closes #158).
2026-09-28: DNS names in record values (CNAME, MX, SRV and NS targets) are lower-cased, so letter case alone is not a change (closes #157).
2026-09-28: lint and tests run on every build: script/cibuild and script/docker pass --no-cache-filter=lint,builder (closes #115).
2026-09-28: the server timeout test drives Run and checks the timeouts on the http.Server it serves (closes #120).
2026-09-28: upaas deploy readiness: the image runs as user dnswatcher with a HEALTHCHECK; README "Running under upaas" (closes #147).
2026-09-21: added behavioural tests for internal/globals, internal/healthcheck, and internal/logger (closes #110).
2026-09-21: go mod tidy dropped the redundant golang.org/x/sync // indirect line so script/bootstrap leaves a clean tree (#132)
2026-08-10: comment-only corrections to script/bootstrap, script/cibuild and Dockerfile.lint; no behaviour changed.
2026-08-10: MIT LICENSE added at the repository root; the README's first line and License section name the licence.
2026-08-10: policy scaffold present: REPO_POLICIES.md, .editorconfig, .dockerignore, CI workflow, make fmt-check, make docker, make hooks.
2026-08-10: Go's test cache disabled in script/test (-count=1), so every run queries live DNS; a failed run is rerun with -v.
2026-08-10: live-DNS tests made robust rather than gated (#93): a limit on concurrent lookups, retries, and a quorum across nameservers.
2026-08-10: all linting moved into Docker: script/lint builds Dockerfile.lint, and the root Dockerfile has its own lint stage.
2026-08-09: in-flight notification deliveries are drained at shutdown, bounded by the shutdown deadline (#106).
2026-08-09: http.Server sets all four socket timeouts; WriteTimeout stays above the 60s handler timeout (#99).
2026-08-09: SecurityHeaders() middleware sets HSTS, CSP and the other security headers REPO_POLICIES.md requires on every response.
2026-08-07: golangci-lint bumped to v2.12.2 and .golangci.yml set to the org config; fixed the resulting goconst, dupl and lll findings.
2026-07-07 Adopted scripts-to-rule-them-all: script/ entrypoints, Makefile shims, README Entrypoints section
2026-02-20: iterative DNS resolver implemented
2026-02-20: CI actions and go install refs pinned to commit SHAs; Gitea Actions workflow added
2026-02-20: watcher monitoring orchestrator merged to main (#8)
2026-02-20: DOMAINS/HOSTNAMES unified into single TARGETS config (#11)
2026-02-19: TCP port connectivity checker, made concurrent with port validation; gosec G704 SSRF findings fixed without suppression
2026-02-19: TLS certificate inspector with no-peer-certificates error path and IP SANs
2026-02-19: gosec SSRF and formatting fixes on main
2026-02-19: initial scaffold with per-nameserver DNS monitoring model

Future Steps

nameserver IP address changes: #105
DNSWATCHER_SENTRY_DSN does nothing: #107
rate limit on /metrics Basic Auth: #101
trial run of the finished image: #149
1.0 readiness: run it with a real config and read the logs: #66
goimports in make fmt-check, Markdown formatting: #119
final state save at shutdown: #114
README accuracy sweep: #108
README sections required by policy: #173
fixed root server order: #138
review toward 1.0: #144