nodejs

OpenTracing Tutorial - Node.js

Installing

The tutorials are using CNCF Jaeger (https://github.com/jaegertracing/jaeger) as the tracing backend, see here how to install it in a Docker image.

Install the dependencies:

cd opentracing-tutorial/nodejs
npm install

The rest of the commands in the Node.js tutorials should be executed relative to this directory.

Under construction

This tutorial is currently incomplete. You can try following the tutorials in the other languages and adapt them to Node.js, as all the same features are available in the OpenTracing API for Javascript (https://github.com/opentracing/opentracing-javascript). Use the following code to initialize Jaeger tracer:

var initJaegerTracer = require('jaeger-client').initTracer;

function initTracer(serviceName) {
    var config = {
        'serviceName': serviceName,
        'sampler': {
            'type': 'const',
            'param': 1
        },
        'reporter': {
            'logSpans': true
        }
      };
      var options = {
        'logger': {
            'info': function logInfo(msg) {
                console.log('INFO ', msg);
            },
            'error': function logError(msg) {
                console.log('ERROR', msg)
            }
        }
      };
      return initJaegerTracer(config, options);
}

Note that Lesson 1 has a solution provided, which you can use to bootstrap your work for the other lessons.