docs: adds node inline source maps example (#3318)

* docs: adds node inline source maps example

* Remove redundant statement

---------

Co-authored-by: Christian Simon <[email protected]>

Author: petethepig

examples/language-sdk-instrumentation/nodejs/express-ts-inline/Dockerfile

@@ -0,0 +1,12 @@
+FROM node:latest
+
+WORKDIR /app
+
+COPY package.json yarn.lock .
+COPY tsconfig.json .
+RUN yarn 
+COPY *.ts .
+RUN yarn build
+ENV DEBUG=pyroscope
+CMD ["yarn", "run", "run"] 
+

examples/language-sdk-instrumentation/nodejs/express-ts-inline/docker-compose.yml

@@ -0,0 +1,40 @@
+---
+version: '3.9'
+services:
+  pyroscope:
+    image: 'grafana/pyroscope:latest'
+    ports:
+      - '4040:4040'
+
+  us-east:
+    ports:
+      - 5000
+    environment:
+      - REGION=us-east
+    build:
+      context: .
+
+  eu-north:
+    ports:
+      - 5000
+    environment:
+      - REGION=eu-north
+    build:
+      context: .
+
+  ap-south:
+    ports:
+      - 5000
+    environment:
+      - REGION=ap-south
+    build:
+      context: .
+
+  load-generator:
+    build:
+      context: ../
+      dockerfile: Dockerfile.load-generator
+    depends_on:
+      - us-east
+      - eu-north
+      - ap-south

examples/language-sdk-instrumentation/nodejs/express-ts-inline/index.ts

@@ -0,0 +1,56 @@
+/* eslint-disable */
+import express from 'express';
+import morgan from 'morgan';
+
+const Pyroscope = require('@pyroscope/nodejs');
+const SourceMapper = Pyroscope.default.SourceMapper;
+
+const port = process.env['PORT'] || 5000;
+
+const region = process.env['REGION'] || 'default';
+
+const app = express();
+app.use(morgan('dev'));
+
+app.get('/', (req, res) => {
+  res.send('Available routes are: /bike, /car, /scooter');
+});
+
+const genericSearchHandler = (p: number) => (req: any, res: any) => {
+  const time = +new Date() + p * 1000;
+  let i = 0;
+  while (+new Date() < time) {
+    i += Math.random();
+  }
+  res.send('Vehicle found');
+};
+
+app.get('/bike', function bikeSearchHandler(req, res) {
+  return genericSearchHandler(0.2)(req, res);
+});
+app.get('/car', function carSearchHandler(req, res) {
+  return genericSearchHandler(1)(req, res);
+});
+app.get('/scooter', function scooterSearchHandler(req, res) {
+  return genericSearchHandler(0.5)(req, res);
+});
+
+SourceMapper.create(["."])
+  .then((sourceMapper) => {
+    Pyroscope.init({
+      appName: 'nodejs',
+      serverAddress: 'http://pyroscope:4040',
+      sourceMapper: sourceMapper,
+      tags: { region },
+    });
+    Pyroscope.start();
+  })
+  .catch((e) => {
+    console.error(e)
+  })
+
+app.listen(port, () => {
+  console.log(
+    `Server has started on port ${port}, use http://localhost:${port}`
+  );
+});

examples/language-sdk-instrumentation/nodejs/express-ts-inline/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "rideshare-app-express",
+  "version": "1.0.0",
+  "description": "",
+  "scripts": {
+    "build": "tsc",
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "run": "node build/index.js"
+  },
+  "author": "",
+  "license": "Apache-2.0",
+  "dependencies": {
+    "@pyroscope/nodejs": "0.3.10",
+    "axios": "^0.26.1",
+    "express": "^4.17.3",
+    "morgan": "^1.10.0",
+    "typescript": "^4.6.2"
+  },
+  "devDependencies": {
+    "@types/express": "^4.17.13",
+    "@types/morgan": "^1.9.3"
+  },
+  "resolutions": {
+    "protobufjs": "^7.2.5",
+    "tar": "^6.2.1",
+    "@types/mime": "3.0.4"
+  }
+}

examples/language-sdk-instrumentation/nodejs/express-ts-inline/tsconfig.json

@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "target": "es6",
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "rootDir": ".",
+    "outDir": "build",
+    "allowSyntheticDefaultImports": true,
+    "allowJs": true,
+    "checkJs": true,
+    "importHelpers": false,
+    "alwaysStrict": true,
+    "inlineSourceMap": true,
+    "esModuleInterop": true,
+    "forceConsistentCasingInFileNames": false,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitReturns": false,
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noImplicitAny": false,
+    "noImplicitThis": false,
+    "strictNullChecks": false,
+    "skipLibCheck": true
+  },
+  "include": ["**/*.ts"]
+}