5bf815b304
Adds the minimum ops surface area for a production broker without
over-engineering. All new config knobs are env-var driven with sane
defaults.
New modules:
- logger.ts: structured JSON logs (one line, stderr, ready for
Loki/Datadog ingestion without preprocessing)
- metrics.ts: in-process Prometheus counters + gauges, exposed at
GET /metrics. Tracks connections, messages, queue depth, TTL
sweeps, hook requests, DB health.
- rate-limit.ts: token-bucket rate limiter keyed by (pid, cwd).
Applied to POST /hook/set-status at 30/min default.
- db-health.ts: Postgres ping loop with exponential-backoff retry.
GET /health returns 503 while DB is down.
- build-info.ts: version + gitSha (from GIT_SHA env or `git rev-parse`
fallback) + uptime, surfaced on /health.
Behavior changes:
- Connection caps: MAX_CONNECTIONS_PER_MESH (default 100). Exceed →
close(1008, "capacity") + metric increment.
- Message size: MAX_MESSAGE_BYTES (default 65536). WS applies it via
`ws.maxPayload`. Hook POST bodies cap out with 413.
- Structured logs everywhere replacing the old `log()` helper.
- Env validation stricter: DATABASE_URL required + regex-checked for
postgres:// prefix.
New endpoints:
- GET /health → {status, db, version, gitSha, uptime}. 503 if DB down.
- GET /metrics → Prometheus text format.
Verified: 21/21 tests still pass. Hit /health + /metrics live —
gitSha resolves correctly via `git rev-parse --short HEAD` in dev.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
34 lines
963 B
TypeScript
34 lines
963 B
TypeScript
/**
|
|
* Structured JSON logger.
|
|
*
|
|
* One line per log event. Production observability tools (Datadog,
|
|
* Loki, etc.) can ingest these directly. Dev readability is
|
|
* secondary — if you're eyeballing, pipe through `jq`.
|
|
*/
|
|
|
|
type LogLevel = "debug" | "info" | "warn" | "error";
|
|
|
|
interface LogContext {
|
|
[key: string]: unknown;
|
|
}
|
|
|
|
function emit(level: LogLevel, msg: string, ctx: LogContext = {}): void {
|
|
const entry = {
|
|
ts: new Date().toISOString(),
|
|
level,
|
|
component: "broker",
|
|
msg,
|
|
...ctx,
|
|
};
|
|
// Single line, no pretty-printing. stderr so stdout is free for
|
|
// any app-level protocol chatter.
|
|
console.error(JSON.stringify(entry));
|
|
}
|
|
|
|
export const log = {
|
|
debug: (msg: string, ctx?: LogContext) => emit("debug", msg, ctx),
|
|
info: (msg: string, ctx?: LogContext) => emit("info", msg, ctx),
|
|
warn: (msg: string, ctx?: LogContext) => emit("warn", msg, ctx),
|
|
error: (msg: string, ctx?: LogContext) => emit("error", msg, ctx),
|
|
};
|