Red commit: e964ec9c46 (CI run: pending —
workflow only triggers on PR open)
Partial fix for #1120 — finishes the four follow-up items left open
after PR #1123 (cancelled writes, ingestor I/O, threshold-flag tests,
docs).
## What's done
- **`cancelledWriteBytesPerSec`** — server `/proc/self/io` parser
handles `cancelled_write_bytes`; `/api/perf/io` exposes the per-second
rate; Perf page renders it next to Read/Write with ⚠️ when sustained >1
MB/s.
- **Ingestor `/proc/<pid>/io`** — `cmd/ingestor/stats_file.go` samples
its own `/proc/self/io` each tick and includes `procIO` in the snapshot.
The server's `/api/perf/io` reads it and surfaces `.ingestor`. Frontend
renders an `Ingestor process` Disk I/O block alongside the existing
`server process` block (issue mockup: "Both ingestor and server").
- **Threshold + anomaly tests** — `test-perf-disk-io-1120.js` now
asserts ⚠️ fires/suppresses on WAL>100MB, cache_hit<90%, and the
backfill-rate-vs-tx-rate guard with the `tx_inserted >= 100` baseline
floor. Drops the tautological `|| ... === false` short-circuits flagged
in MINOR m4.
- **Docs (m8)** — `config.example.json` adds `_comment_ingestorStats`
(env var, default path, shared-tmp security note);
`cmd/ingestor/README.md` adds `CORESCOPE_INGESTOR_STATS` to the env-var
table plus a `Stats file` section.
## What's NOT done (deferred)
m1 sync.Map → map+RWMutex, m2 perfIOMu rate caching, m3 negative
cacheSize translation, m5 deterministic-write test, m7 ctx-aware
shutdown — pure polish; will file a follow-up issue if the operator
wants them tracked.
## TDD
- Red: `e964ec9` — adds failing tests + stub field/handler shape
(cancelled missing from struct, ingestor stub returns nil, ingestor
procIO absent).
- Green: `1240703` — wires up the parser case, ingestor sampler,
frontend rendering, docs.
E2E assertion added: test-perf-disk-io-1120.js:108
---------
Co-authored-by: clawbot <clawbot@users.noreply.github.com>
Co-authored-by: Kpa-clawbot <bot@kpa-clawbot.local>
Co-authored-by: Kpa-clawbot <bot@kpa-clawbot>
First step of Go rewrite — separates MQTT ingestion from the Node.js
web server. Single static binary (no CGO) that connects to MQTT
brokers, decodes MeshCore packets, and writes to the shared SQLite DB.
Ported from JS:
- decoder.js → decoder.go (header, path, all payload types, adverts)
- computeContentHash → Go (SHA-256, path-independent)
- db.js v3 schema → db.go (transmissions, observations, nodes, observers)
- server.js MQTT logic → main.go (multi-broker, reconnect, IATA filter)
25 Go tests passing (golden fixtures from production + schema compat).
No existing JS files modified.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Kpa-clawbot