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@opentelemetry/auto-instrumentations-node

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@opentelemetry/auto-instrumentations-node

Metapackage which bundles opentelemetry node core and contrib instrumentations

  • 0.52.1
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What is @opentelemetry/auto-instrumentations-node?

@opentelemetry/auto-instrumentations-node is a package that provides automatic instrumentation for Node.js applications. It simplifies the process of collecting telemetry data such as traces and metrics by automatically instrumenting various Node.js libraries and frameworks.

What are @opentelemetry/auto-instrumentations-node's main functionalities?

Automatic HTTP Instrumentation

This feature automatically instruments HTTP requests and responses, allowing you to collect telemetry data without manually adding instrumentation code.

const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');

const provider = new NodeTracerProvider();
provider.register();

registerInstrumentations({
  instrumentations: [getNodeAutoInstrumentations()]
});

const http = require('http');

const server = http.createServer((req, res) => {
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  res.end('Hello World\n');
});

server.listen(3000, '127.0.0.1', () => {
  console.log('Server running at http://127.0.0.1:3000/');
});

Automatic Database Instrumentation

This feature automatically instruments database operations, such as those performed with MongoDB, to collect telemetry data on database queries and commands.

const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');
const { MongoClient } = require('mongodb');

const provider = new NodeTracerProvider();
provider.register();

registerInstrumentations({
  instrumentations: [getNodeAutoInstrumentations()]
});

const url = 'mongodb://localhost:27017';
const client = new MongoClient(url);

async function run() {
  try {
    await client.connect();
    console.log('Connected to database');
    const db = client.db('test');
    const collection = db.collection('documents');
    await collection.insertOne({ a: 1 });
    console.log('Document inserted');
  } finally {
    await client.close();
  }
}

run().catch(console.dir);

Automatic gRPC Instrumentation

This feature automatically instruments gRPC calls, enabling the collection of telemetry data for gRPC-based microservices.

const { NodeTracerProvider } = require('@opentelemetry/sdk-trace-node');
const { getNodeAutoInstrumentations } = require('@opentelemetry/auto-instrumentations-node');
const { registerInstrumentations } = require('@opentelemetry/instrumentation');
const grpc = require('@grpc/grpc-js');
const protoLoader = require('@grpc/proto-loader');

const provider = new NodeTracerProvider();
provider.register();

registerInstrumentations({
  instrumentations: [getNodeAutoInstrumentations()]
});

const packageDefinition = protoLoader.loadSync('helloworld.proto', {});
const helloProto = grpc.loadPackageDefinition(packageDefinition).helloworld;

function sayHello(call, callback) {
  callback(null, { message: 'Hello ' + call.request.name });
}

const server = new grpc.Server();
server.addService(helloProto.Greeter.service, { sayHello: sayHello });
server.bindAsync('0.0.0.0:50051', grpc.ServerCredentials.createInsecure(), () => {
  server.start();
});

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Package last updated on 07 Nov 2024

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