jaeger endpoint isnt recieving data using jaeger Node.js client

Question

Was trying to connect to jaeger using HTTP request using nodejs but the spans are not reaching the jaeger endpoint. please help with this code snippet.,

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

var config = {
  'serviceName': 'servicename1',
  'reporter': {
    'collectorEndpoint': 'http://jaeger-collector:14268/api/traces',
  }
};
var options = {
  tags: {
    'servicename1': '1.0'
  }
};
var tracer = initTracer(config, options);

var express = require('express');
var app = express();
var http = require('http');
var server = http.createServer(app);

app.get('/', (req, res) => {
    const span = tracer.startSpan('http_request');
    res.send('Hello Jaeger');
    span.log({'event': 'request_end'});
    span.finish();
});

app.get('/', function(req, res) {
    res.send("Hello World!");
});

server.listen(3000);
console.log('Express server started on port %s', server.address().port);

Any help would be much appreciated!

score 0 · Answer 1 · answered Jan 07 '20 at 12:31

Got it! We need to enable sampling strategy to reach the collector endpoint.

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

var config = {
  'serviceName': 'Jaeger_Service',
  'reporter': {
    'collectorEndpoint': 'http://jaeger-collector:14268/api/traces',
  },
  'sampler': {
    'type': 'const',
    'param' : 0.1  
  }
};

var options = {
  'logger': {
'info': function logInfo(msg) {
  console.log('INFO ', msg)
},
'error': function logError(msg) {
  console.log('ERROR', msg)
  }
 }
};

var tracer = initTracer(config, options);
var express = require('express');
var app = express();
var http = require('http');
var server = http.createServer(app);

app.get('/', (req, res) => {
    const span = tracer.startSpan('http_request');
    res.send('Hello Jaeger');
    span.log({'event': 'request_end'});
    span.finish();
});

server.listen(8000);
console.log('Express server started on port %s', server.address().port);

jaeger endpoint isnt recieving data using jaeger Node.js client

1 Answers1