sneak
b005222e96
check / check (push) Waiting to run
The AS page sorted its IPv4 and IPv6 prefix lists by network address,
then by mask length. It now sorts them by mask length, shortest first,
and by network address within one mask length, so a /16 comes before a
/24. The sort function is renamed from sortRoutesByNetwork to
sortRoutesByMaskLength to say so.
The handler of /api/v1/as/{asn} does not sort its lists, so it is
unchanged.
Model: opus-5-5
236 lines
14 KiB
Markdown
236 lines
14 KiB
Markdown
# Workflow
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- branch (from `main`)
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- do the work in Next Step
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- move Next Step to the top of Completed Steps
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- move the top item of Future Steps into Next Step
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- commit (`TODO.md` changes in the same commit as the work)
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- merge to `main` if the branch is not protected, otherwise open a PR
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- push
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# Status
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pre-1.0. No git tags. `main` last took `next` on 2026-10-06, through
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https://git.eeqj.de/sneak/routewatch/pulls/6. The linter and the tests are
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phases of the Docker build, and the Gitea workflow runs `script/cibuild` (the
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format check of the Go code and the markdown, both phases, then the image) on
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every push. The image sets memory ceilings for a 5 GiB container (README
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"Memory") and the README says how to run it under upaas (README "Running under
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upaas"). A 25-hour run of `a9b6860` on the live feed peaked at about 0.6 GiB
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(https://git.eeqj.de/sneak/routewatch/issues/3). A run of `825afa2` on the live
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feed found the prefix handler dropping about a quarter of its updates because
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its route writes were slower than the feed
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(https://git.eeqj.de/sneak/routewatch/issues/96); the cheaper writes since then
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are measured by a benchmark, not yet on the live feed.
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# Next Step
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Run `next` on the live feed, as README "Running under upaas" describes, for the
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final check https://git.eeqj.de/sneak/routewatch/issues/96 names: whether the
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prefix handler still drops updates after the first hour. If it does, a new issue
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follows with the numbers. Then an audit of the code at the commit that run
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tested.
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# Completed Steps
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- 2026-10-27: the AS page lists its IPv4 and its IPv6 prefixes by mask length,
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shortest first, and prefixes of one mask length by address. They used to be
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listed by address (closes #153)
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- 2026-10-27: on `/` and `/status`, a spinner beside the status turns one frame
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each time the stats show more messages than the time before. A page that has
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not seen more messages for three refreshes shows "stale" and the time since
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then instead, in red (closes #152)
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- 2026-10-27: the WHOIS details of a Brazilian AS keep their accented letters.
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LACNIC's answer for such an AS comes from NIC.br, Brazil's registry, with each
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accented letter replaced. The details now come from NIC.br's own server,
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`whois.registro.br`. When that query fails, the details from LACNIC's answer
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are kept and a warning is logged. After NIC.br answers that RouteWatch is over
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its query limit, RouteWatch stops asking NIC.br for an hour (closes #174)
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- 2026-10-27: `make asupdate` stops with an error when the download of `as.csv`
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breaks off. The generator used to retry the failed read forever. A record that
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does not parse is still logged and skipped (closes #177)
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- 2026-10-27: `make asupdate` runs the new `script/asupdate`. It replaces the AS
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list built into RouteWatch only when the generator succeeds and finds at least
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one AS. A failed download used to replace the list with an empty file. The
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generator reads `as.csv` from `ipverse/as-metadata`, the source's new name
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(closes #173)
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- 2026-10-27: the WHOIS details of an AS at RIPE, APNIC or AFRINIC come only
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from its `aut-num` object and the organisation object it names. RIPE and APNIC
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start their answer with the `as-block` object of the AS's block. Its dates
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were stored as the AS's (closes #168)
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- 2026-10-27: AS names keep their accented letters. The AS list built into
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RouteWatch is rebuilt from today's `as.csv`, which added a country code
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column. That file no longer lists AS 0 or the documentation AS numbers. A
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WHOIS answer that is not valid UTF-8 is decoded as Latin-1, which RIPE and
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APNIC send, before it is parsed and stored (closes #165)
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- 2026-10-27: the Age column on the AS and prefix pages reads in words, such as
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"5 minutes ago" or "2 weeks ago", instead of Go durations such as "360h0m0s
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ago". An age under a minute reads in seconds, and one over a month in months
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or years instead of a date (closes #163)
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- 2026-10-26: a write to a stored AS, peering or peer keeps the earlier of the
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two first-seen times and the later of the two last-seen times. An old update
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from a collector catching up on a backlog no longer moves last seen back
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(closes #162)
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- 2026-10-26: the status page shows "Route Churn/min", the number of prefix
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announcements and withdrawals, from all peers, in the last full clock minute.
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`/api/v1/stats` reports it as `route_churn_per_min` in `stream`, which
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replaces the moving average `route_churn_per_sec`. The messages and updates
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per second on `/` and `/status` are whole numbers (closes #160)
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- 2026-10-26: the WHOIS fetcher backs off more slowly. A failure makes its wait
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1.5 times as long, up to one minute instead of five. Its queries to RIPE,
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APNIC and AFRINIC leave out person and role objects, which RIPE counts against
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a daily limit per address. A refused query is logged with the RIR's error line
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(closes #159)
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- 2026-10-26: the home page's AS name search lists the ASes whose handle or
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description holds the text, as links to their pages, from the new
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`/api/v1/search/as`; the search ignores case. When the database has no record
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of an AS, its page takes the handle and description from the AS list built
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into RouteWatch and still lists the AS's prefixes (closes #151)
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- 2026-10-19: README "HTTP Endpoints" lists every route with what it answers,
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"Database Schema" matches `schema.sql`, and the rest of the README matches the
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code; this file brought up to date (closes #72)
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- 2026-10-19: route writes are cheaper: the live route and prefix tables lose
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their random UUID keys and the prefix tables their duplicate index, a route
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update sets only the columns that change, and every write goes through one
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connection with a page cache of 1 GiB (README "Memory"). A benchmark writes
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the prefix handler's largest batch faster than the feed sends it (closes #96)
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- 2026-10-19: the WAL checkpoint, the incremental vacuum and ANALYZE take the
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database lock every batch write holds, so a vacuum no longer fails with
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"database is locked" and an ANALYZE no longer makes a batch write lose its
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updates; ANALYZE runs as `PRAGMA optimize` with an analysis limit (closes #94)
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- 2026-10-19: shutdown stops the streamer first, and each handler writes
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everything left on its queue before it stops, so the updates waiting there are
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no longer lost (closes #69)
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- 2026-10-19: a path that ends in an AS set of several members has origin AS 0,
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no known origin, instead of the set's last member, and the set adds no
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peerings; the pages show such a route as having no known origin (closes #75)
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- 2026-10-19: `bgp_peer_count` drops to 0 when the last peer goes down (closes
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#92)
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- 2026-10-19: `bgp_peer_count` counts every peer the feed has heard from, not
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only those whose session opened since startup, and drops a peer whose session
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goes down (closes #74)
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- 2026-10-19: the shared files are re-vendored from `sneak/prompts` at
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`0653579`: golangci-lint v2.14.0 and its configuration, lint and test as
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`Dockerfile` phases that keep Go's and golangci-lint's caches, markdown
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formatted with prettier, agent guidance in `AGENTS.md`; the code is fixed for
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what the new linter configuration finds (closes #52)
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- 2026-10-19: the streamer reads feed lines up to 1 MiB, so a line over 64 KiB
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no longer ends the connection (closes #76)
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- 2026-10-19: a peer's live routes are removed when its BGP session goes down;
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`STATE` messages are never dropped for backpressure, and one that finds its
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queue full waits for room ahead of the handler's other messages (closes #56)
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- 2026-10-19: the prefix-length pages pick their sample with a bounded number of
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index lookups instead of reading every route of that length, and list each
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prefix once (closes #66)
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- 2026-10-19: a request past its time limit answers 504 instead of 408, and
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`/api/v1/stats` answers 504 instead of 500 when its read runs out of time
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(closes #70)
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- 2026-10-19: the AS, peer and prefix handlers write each batch outside the lock
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their message handling needs, so messages keep coming off their queues during
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a write; meanwhile the next batch grows to at most ten batch sizes (closes
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#65)
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- 2026-10-19: a live route is identified by prefix and peer, so an announcement
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with a new origin AS replaces the peer's route and a withdrawal removes it
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whatever its origin AS (closes #55)
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- 2026-10-14: the streamer reconnects when RIS Live ends the stream or sends
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nothing for 60 seconds, and the health check reports the feed disconnected
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meanwhile (closes #53)
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- 2026-10-14: the prefix page takes the names of the origin ASes from the prefix
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query instead of reading every route of each origin AS (closes #67)
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- 2026-10-14: the daemon exits with status 1 when its web server cannot listen
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on its port, instead of running on without it (closes #73)
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- 2026-10-14: the prefix pages parse the prefix before looking it up: one that
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does not parse answers 400, and any valid way of writing a prefix finds its
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routes (closes #71)
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- 2026-10-14: the IP lookup ignores routes shorter than /8 for IPv4 and /16 for
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IPv6, so a default route is no longer named as an address's owner (closes #57)
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- 2026-10-14: a prefix batch keeps each peer's last update for a prefix, instead
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of one update per prefix across all peers (closes #54)
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- 2026-10-14: `reconnect_count` in `/api/v1/stats` counts every reconnect
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(closes #68)
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- 2026-10-03: `/api/v1/stats` serves the prefix distribution from memory, seeded
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at startup and adjusted on every live-route write, so a request no longer
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reads every live route (closes #30)
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- 2026-10-03: a new database is created with `auto_vacuum` set to incremental,
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through the connection string so it is set before the file is first written,
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and each periodic incremental vacuum now returns up to 1000 free pages; the
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late `PRAGMA auto_vacuum` in `Initialize`, which SQLite ignored, is gone
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(closes #43)
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- 2026-10-03: looking up an IP address no longer reads every IPv6 route: both
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families find the most specific live route with at most 33 or 129 lookups on
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the prefix index, and the IPv4 range columns are gone. Prefixes from the feed
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are stored in one text form, so an IPv6 withdrawal, which the feed sends
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uncompressed, now removes its route (closes #48)
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- 2026-10-02: a plain `docker build .` stamps the commit's tag or short commit
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(`git describe --tags --always`) into the page footer instead of `unknown`:
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`.dockerignore` sends `.git` without `.git/config`, a `VERSION` build argument
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takes precedence, and `make build` stamps the same value (closes #46)
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- 2026-09-29: the entrypoint creates the data directory if it is missing and
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stops the start if a step fails; README "Running under upaas" no longer asks
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for the host directory to be created first (closes #42)
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- 2026-09-29: `.dockerignore` keeps `.git`, local build output, local databases
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and `.env` out of the Docker build context, and so out of the source archive
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in the image (closes #39)
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- 2026-09-29: README first line names the MIT license and the author; the
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License section now says MIT and links `LICENSE`, and an Author section was
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added; this file brought up to date (closes #38)
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- 2026-09-29: MIT `LICENSE` (closes #1)
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- 2026-09-28: stopping the daemon while the feed is flowing no longer panics
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with "send on closed channel": the read loop checks for a stop just before
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handing a message to the handler queues, and a second `Stop` no longer closes
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the queues again (closes #34)
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- 2026-09-28: `docker stop` no longer kills the daemon 2 seconds after the stop
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signal: the entrypoint switches to the `routewatch` user with `setpriv`
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instead of `runuser`, so the daemon receives the signal itself and gets the
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whole wait `docker stop` allows, up to its own 60-second limit (closes #33)
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- 2026-09-28: ready to run under upaas: a set but invalid `PORT`,
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`XDG_DATA_HOME` or `MALLOC_ARENA_MAX` stops the start, the health check
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follows `PORT`, README "Running under upaas" section (closes #31)
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- 2026-09-22: realtime in-memory database statistics: counts seeded at startup
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and adjusted on every write, oldest/newest route timestamps via index-end
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lookups; `/api/v1/stats` no longer scans the tables (closes #27)
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- 2026-09-21: batch writes take the write lock when their transaction begins
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(`_txlock=immediate`), so they wait out a WAL checkpoint instead of failing
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with "database is locked" (closes #25)
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- 2026-09-21: `MALLOC_ARENA_MAX=2` in the image caps glibc malloc arenas, so
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memory outside the Go runtime no longer grows with the core count (closes #23)
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- 2026-09-21: `GOMEMLIMIT=1536MiB` in the image; README Memory section with the
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memory budget and the 5 GiB container limit (closes #13)
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- 2026-09-21: the four handler queues hold at most 20,000 messages each, down
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from 100,000 (closes #11)
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- 2026-09-21: two goroutine leaks fixed: the stats handlers after a timeout and
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the streamer's tickers on every reconnect (closes #12)
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- 2026-09-21: parsed RIS messages no longer keep the unused `Community` and
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`Raw` fields (closes #9)
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- 2026-09-21: `.editorconfig`, and a Gitea workflow that runs `script/cibuild`
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on every push (closes #14)
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- 2026-09-21: the peering handler's AS-path map holds at most 500,000 paths and
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is swapped for an empty one every 30 seconds instead of copied (closes #10)
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- 2026-09-21: SQLite memory bounded across the whole connection pool: a 64 MiB
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page cache on each connection, 1 GiB soft and 1.5 GiB hard heap limits (closes
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#8)
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- 2026-09-21: the Docker build runs the format check, the linter and the tests,
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linting in a separate stage on a golangci-lint image pinned by digest (closes
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#5)
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- 2026-09-21: `make test` skips the live-network feed test (`-short`), so
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`make check` no longer depends on the network (closes #2)
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- 2026-07-07 Adopted scripts-to-rule-them-all: `script/` entrypoints, Makefile
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shims, README Entrypoints section
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- 2026-02-22: repo policy compliance: required policy files, .gitignore update,
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Makefile fmt-check/check/docker/hooks targets, gofmt pass
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(repo-policies-compliance, unmerged)
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- 2026-01-01: WAL checkpointing: periodic (5s), on startup with logging,
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TRUNCATE mode; fixed slow queries
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- 2025-12-31: status page: navbar, home page with search, oldest/newest route
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timestamps, NULL handling in WHOIS stats; container runs as routewatch user
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with proper state dir
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- 2025-12-30: structured HTTP request logging, increased timeouts, CIDR prefix
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URL routing fixes, status page metrics and footer
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- 2025-12-29: Dockerfile multi-stage build with source archive; SQLite
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incremental vacuum for non-blocking space reclamation
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- 2025-07-27: initial RouteWatch BGP stream monitor
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# Future Steps
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None open.
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