[grade=B] DC-097+DC-092: Prometheus metrics export + dependency health checks

DC-097: Add /api/v1/metrics/prometheus endpoint returning standard Prometheus text exposition format. Includes uptime, request counts by status/method, error counts, business metrics, memory gauges. Public (no auth) for Prometheus scraping. DC-092: Already resolved by DC-075's system/health endpoint which checks disk space, memory, service health, and incidents. All 1540 tests pass.
2026-08-12 05:33:03 -07:00
parent 27beae22a8
commit f3934fd257
3 changed files with 58 additions and 0 deletions
@@ -439,6 +439,8 @@ module.exports = function configureMiddleware(app, {
    { path: '/api/v1/health-checks/status', exact: true, method: 'GET' },
    // DC-075: System health endpoint for external uptime monitoring (UptimeRobot, BetterStack)
    { path: '/api/v1/system/health',   exact: true,  method: 'GET' },
+    // DC-097: Prometheus metrics endpoint (scraped by Prometheus, no auth)
+    { path: '/api/v1/metrics/prometheus', exact: true, method: 'GET' },
    // System Overview widget on the dashboard — needs the flattened CPU/mem
    // data without going through auth. See skill references/totp-and-system-overview-pitfalls.md §3.
    { path: '/api/v1/monitoring/stats',      exact: true, method: 'GET' },