Ajouter index.js

index.js

@@ -0,0 +1,31 @@
+import express from 'express';
+import client from 'prom-client';
+
+const app = express();
+const collectDefaultMetrics = client.collectDefaultMetrics;
+collectDefaultMetrics({ prefix: 'thetiptop_' });
+
+// Exemple de compteur HTTP
+const httpRequestCounter = new client.Counter({
+  name: 'thetiptop_http_requests_total',
+  help: 'Nombre total de requêtes HTTP',
+  labelNames: ['method', 'route', 'status_code']
+});
+
+app.use((req, res, next) => {
+  res.on('finish', () => {
+    httpRequestCounter.inc({
+      method: req.method,
+      route: req.route ? req.route.path : req.path,
+      status_code: res.statusCode
+    });
+  });
+  next();
+});
+
+app.get('/metrics', async (req, res) => {
+  res.set('Content-Type', client.register.contentType);
+  res.end(await client.register.metrics());
+});
+
+app.listen(4000, () => console.log('Backend en écoute sur le port 4000'));