metrics.ts25 lines · main

1	import { createMetricsRegistry } from '@briven/shared/observability';
2
3	/**
4	* api's metrics registry. Single instance per process; the route in
5	* `routes/health.ts` exposes `render()` at /metrics, the middleware in
6	* `middleware/metrics.ts` calls `incCounter` + `observeHistogram` per
7	* request.
8	*/
9	const registry = createMetricsRegistry({
10	help: {
11	http_requests_total: 'Total HTTP requests handled by the api, by method, status, and route',
12	http_request_duration_ms: 'HTTP request duration (ms), by method and route',
13	briven_api_audit_writes_total: 'Total audit-log rows written, by action namespace',
14	briven_auth_rate_limit_denied_total: 'Auth rate-limit denials (S6 reliability)',
15	briven_auth_rate_limit_memory_fallback_total: 'Auth rate limiter fell back to memory (no Redis)',
16	briven_auth_mailer_failures_total: 'Auth tenant mailer hard failures after fallback',
17	briven_auth_route_5xx_total: 'HTTP 5xx responses on auth-related routes',
18	},
19	});
20
21	export const incCounter = registry.incCounter;
22	export const observeHistogram = registry.observeHistogram;
23	export const registerGauge = registry.registerGauge;
24	export const renderPrometheus = registry.render;
25	export const resetMetrics = registry.reset;