「✨」 feat: added exporter to node shitty code (yes thats mine and ???)

docker/api-base/compose.yml

@@ -9,6 +9,7 @@ services:
     networks:
       - front
       - back
+      - prom-exporter
     environment:
       - TZ=Europe/Paris
       - API_TARGET=user
@@ -24,6 +25,7 @@ services:
     networks:
       - front
       - back
+      - prom-exporter
     environment:
       - TZ=Europe/Paris
       - API_TARGET=auth

docker/monitoring/prometheus/config/prometheus.yml

@@ -23,3 +23,11 @@ scrape_configs:
   - job_name: 'node-exporter'
     static_configs:
       - targets: ['node-exporter:9100']
+
+  - job_name: 'auth-api'
+    static_configs:
+      - targets: ['transcendence-api-auth:3000']
+
+  - job_name: 'user-api'
+    static_configs:
+      - targets: ['transcendence-api-user:3000']

package.json

@@ -9,7 +9,8 @@
 		"better-sqlite3": "^12.2.0",
 		"fastify": "^5.4.0",
 		"fastify-cli": "^7.4.0",
-		"google-auth-library": "^10.1.0"
+		"google-auth-library": "^10.1.0",
+		"prom-client": "^15.1.3"
 	},
 	"type": "module",
 	"devDependencies": {

pnpm-lock.yaml

@@ -38,6 +38,9 @@ importers:
       google-auth-library:
         specifier: ^10.1.0
         version: 10.1.0
+      prom-client:
+        specifier: ^15.1.3
+        version: 15.1.3
     devDependencies:
       '@tailwindcss/vite':
         specifier: ^4.1.11
@@ -268,6 +271,10 @@ packages:
     resolution: {integrity: sha512-9I2Zn6+NJLfaGoz9jN3lpwDgAYvfGeNYdbAIjJOqzs4Tpc+VU3Jqq4IofSUBKajiDS8k9fZIg18/z13mpk1bsA==}
     engines: {node: '>=8'}
 
+  '@opentelemetry/api@1.9.0':
+    resolution: {integrity: sha512-3giAOQvZiH5F9bMlMiv8+GSPMeqg0dbaeo58/0SlA9sxSqZhnUtxzX9/2FzyhS9sWQf5S0GJE0AKBrFqjpeYcg==}
+    engines: {node: '>=8.0.0'}
+
   '@rollup/rollup-android-arm-eabi@4.44.2':
     resolution: {integrity: sha512-g0dF8P1e2QYPOj1gu7s/3LVP6kze9A7m6x0BZ9iTdXK8N5c2V7cpBKHV3/9A4Zd8xxavdhK0t4PnqjkqVmUc9Q==}
     cpu: [arm]
@@ -520,6 +527,9 @@ packages:
   bindings@1.5.0:
     resolution: {integrity: sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==}
 
+  bintrees@1.0.2:
+    resolution: {integrity: sha512-VOMgTMwjAaUG580SXn3LacVgjurrbMme7ZZNYGSSV7mmtY6QQRh0Eg3pwIcntQ77DErK1L0NxkbetjcoXzVwKw==}
+
   bl@4.1.0:
     resolution: {integrity: sha512-1W07cM9gS6DcLperZfFSj+bWLtaPGSOHWhPiGzXmvVJbRLdG82sH/Kn8EtW1VqWVA54AKf2h5k5BbnIbwF3h6w==}
 
@@ -1093,6 +1103,10 @@ packages:
   process-warning@5.0.0:
     resolution: {integrity: sha512-a39t9ApHNx2L4+HBnQKqxxHNs1r7KF+Intd8Q/g1bUh6q0WIp9voPXJ/x0j+ZL45KF1pJd9+q2jLIRMfvEshkA==}
 
+  prom-client@15.1.3:
+    resolution: {integrity: sha512-6ZiOBfCywsD4k1BN9IX0uZhF+tJkV8q8llP64G5Hajs4JOeVLPCwpPVcpXy3BwYiUGgyJzsJJQeOIv7+hDSq8g==}
+    engines: {node: ^16 || ^18 || >=20}
+
   proxy-from-env@1.1.0:
     resolution: {integrity: sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==}
 
@@ -1225,6 +1239,9 @@ packages:
     resolution: {integrity: sha512-5S7Va8hKfV7W5U6g3aYxXmlPoZVAwUMy9AOKyF2fVuZa2UD3qZjg578OrLRt8PcNN1PleVaL/5/yYATNL0ICUw==}
     engines: {node: '>=18'}
 
+  tdigest@0.1.2:
+    resolution: {integrity: sha512-+G0LLgjjo9BZX2MfdvPfH+MKLCrxlXSYec5DaPYP1fe6Iyhf0/fSmJ0bFiZ1F8BT6cGXl2LpltQptzjXKWEkKA==}
+
   thread-stream@3.1.0:
     resolution: {integrity: sha512-OqyPZ9u96VohAyMfJykzmivOrY2wfMSf3C5TtFJVgN+Hm6aj+voFhlK+kZEIv2FBh1X6Xp3DlnCOfEQ3B2J86A==}
 
@@ -1460,6 +1477,8 @@ snapshots:
 
   '@lukeed/ms@2.0.2': {}
 
+  '@opentelemetry/api@1.9.0': {}
+
   '@rollup/rollup-android-arm-eabi@4.44.2':
     optional: true
 
@@ -1656,6 +1675,8 @@ snapshots:
     dependencies:
       file-uri-to-path: 1.0.0
 
+  bintrees@1.0.2: {}
+
   bl@4.1.0:
     dependencies:
       buffer: 5.7.1
@@ -2264,6 +2285,11 @@ snapshots:
 
   process-warning@5.0.0: {}
 
+  prom-client@15.1.3:
+    dependencies:
+      '@opentelemetry/api': 1.9.0
+      tdigest: 0.1.2
+
   proxy-from-env@1.1.0: {}
 
   pump@3.0.3:
@@ -2412,6 +2438,10 @@ snapshots:
       mkdirp: 3.0.1
       yallist: 5.0.0
 
+  tdigest@0.1.2:
+    dependencies:
+      bintrees: 1.0.2
+
   thread-stream@3.1.0:
     dependencies:
       real-require: 0.2.0

src/api/auth/default.js

@@ -1,5 +1,6 @@
 import fastifyJWT from '@fastify/jwt';
 import fastifyCookie from '@fastify/cookie';
+import client from 'prom-client';
 
 import { register } from './register.js';
 import { login } from './login.js';
@@ -13,6 +14,7 @@ import { totpVerify } from './totpVerify.js';
 
 const saltRounds = 10;
 export const appName = process.env.APP_NAME || 'knl_meowscendence';
+const collectDefaultMetrics = client.collectDefaultMetrics
 
 authDB.prepareDB();
 
@@ -21,6 +23,30 @@ authDB.prepareDB();
  * @param {import('fastify').FastifyPluginOptions}	options
  */
 export default async function(fastify, options) {
+
+	collectDefaultMetrics({ labels: { service: "auth-api" } })
+	client.register.setDefaultLabels({ service: "auth-api" })
+
+	const httpRequestCounter = new client.Counter({
+		name: 'http_requests_total',
+		help: 'Total number of HTTP requests',
+		labelNames: ['method', 'route', 'status_code'],
+	})
+
+	fastify.addHook('onResponse', (req, res, done) => {
+		httpRequestCounter.inc({
+			method: req.method,
+			route: req.routerPath || req.url,
+			status_code: res.statusCode,
+		})
+		done()
+	})
+	fastify.get('/metrics', async (req, reply) => {
+		reply
+			.header('Content-Type', client.register.contentType)
+			.send(await client.register.metrics())
+	})
+
 	fastify.register(fastifyJWT, {
 		secret: process.env.JWT_SECRET || '123456789101112131415161718192021',
 		cookie: {

src/api/user/default.js

@@ -1,8 +1,10 @@
 import fastifyJWT from '@fastify/jwt';
 import fastifyCookie from '@fastify/cookie';
 import Database from 'better-sqlite3';
+import client from 'prom-client';
 
 var env = process.env.NODE_ENV || 'development';
+const collectDefaultMetrics = client.collectDefaultMetrics
 
 let database;
 
@@ -57,6 +59,30 @@ const deleteFriends = database.prepare('DELETE FROM friends WHERE username = ?;'
  */
 export default async function(fastify, options) {
 
+	collectDefaultMetrics({ labels: { service: "auth-api" } })
+	client.register.setDefaultLabels({ service: "auth-api" })
+
+	const httpRequestCounter = new client.Counter({
+		name: 'http_requests_total',
+		help: 'Total number of HTTP requests',
+		labelNames: ['method', 'route', 'status_code'],
+	})
+
+	fastify.addHook('onResponse', (req, res, done) => {
+		httpRequestCounter.inc({
+			method: req.method,
+			route: req.routerPath || req.url,
+			status_code: res.statusCode,
+		})
+		done()
+	})
+	fastify.get('/metrics', async (req, reply) => {
+		reply
+			.header('Content-Type', client.register.contentType)
+			.send(await client.register.metrics())
+	})
+
+
 	fastify.register(fastifyJWT, {
 		secret: process.env.JWT_SECRET || '123456789101112131415161718192021',
 		cookie: {