Adicionando métricas no webapp

webapp/package.json

@@ -3,13 +3,14 @@
   "version": "0.1.0",
   "private": true,
   "scripts": {
-    "dev": "next dev",
+    "dev": "node server.js",
     "build": "next build",
-    "start": "next start",
+    "start": "NODE_ENV=production node server.js",
     "lint": "next lint",
     "grpc:compile": "rm -rf ./src/grpc/rpc && proto-loader-gen-types --longs=String --enums=String --defaults --oneofs --grpcLib=@grpc/grpc-js --outDir=./src/grpc/rpc ./proto/*.proto"
   },
   "dependencies": {
+    "@autometrics/autometrics": "^0.5.0",
     "@grpc/grpc-js": "^1.8.14",
     "@grpc/proto-loader": "^0.7.6",
     "@prisma/client": "4.13.0",

webapp/server.js

@@ -0,0 +1,41 @@
+const { createServer } = require('http')
+const { parse } = require('url')
+const next = require('next')
+const path = require('path')
+
+const dev = process.env.NODE_ENV !== 'production'
+const hostname = 'localhost'
+const port = 3000
+// when using middleware `hostname` and `port` must be provided below
+const app = next({ dev, hostname, port })
+const handle = app.getRequestHandler()
+
+const { autometrics, init } = require("@autometrics/autometrics");
+const { PrometheusExporter } = require("@opentelemetry/exporter-prometheus");
+
+const exporter = new PrometheusExporter();
+init({ exporter });
+
+app.prepare().then(() => {
+  createServer(async (req, res) => {
+    try {
+      const parsedUrl = parse(req.url, true)
+      const { pathname } = parsedUrl
+      await autometrics({functionName: pathname}, async () => {
+        await handle(req, res, parsedUrl)  
+      })();
+      //await handle(req, res, parsedUrl)
+    } catch (err) {
+      console.error('Error occurred handling', req.url, err)
+      res.statusCode = 500
+      res.end('internal server error')
+    }
+  })
+    .once('error', (err) => {
+      console.error(err)
+      process.exit(1)
+    })
+    .listen(port, () => {
+      console.log(`> Ready on http://${hostname}:${port}`)
+    })
+})