adding metrics endpoint for prometheus scraping

wileyj · wileyj · commit 91c976aa5be8 · 2021-08-27T11:20:11.000-04:00
diff --git a/index.js b/index.js
@@ -8,10 +8,17 @@ const jwt = require('jsonwebtoken');
 var concat = require('concat-stream');
 const { promisify } = require('util');
 const sleep = promisify(setTimeout);
+const { createMiddleware: createPrometheusMiddleware } = require('@promster/express');
+const { createServer } = require('@promster/server');
 
 app.set('json spaces', 2);
 app.set('trust proxy', ['loopback', 'linklocal', 'uniquelocal']);
 
+app.use(createPrometheusMiddleware({ app }));
+
+// Create metrics endpoint on separate server
+createServer({ port: 9153 }).then(() => console.log('@promster/server started on port 9153.'));
+
 app.use(morgan('combined'));
 
 app.use(function(req, res, next){
diff --git a/package.json b/package.json
@@ -17,9 +17,12 @@
     "node": ">=6.3.0"
   },
   "dependencies": {
+    "@promster/express": "^3.4.1",
+    "@promster/server": "^3.4.1",
     "concat-stream": "^2.0.0",
     "express": "^4.17.1",
     "jsonwebtoken": "^8.5.0",
-    "morgan": "^1.10.0"
+    "morgan": "^1.10.0",
+    "prom-client": "^11.5.3"
   }
 }
