ericmustin

msgpack sample

A brief demonstration of sending a messagepack encoded trace

requirements and testing notes

tested with Node v10.15.1 and NPM 6.4.1

setup

• download repository

ericmustin

// npm install

const tracer = require('dd-trace').init({debug: false})

tracer.use('express', {
  hooks: {
    request: (span, req, res) => {
	  console.log('express hook invoked')
      span.setTag('hook_tag_key', 'hook_tag_value')
	}

ericmustin

#!/usr/bin/env node

const configObj = require('../config/config');
// "dd-trace": "^0.19.0"
const tracer = require('dd-trace').init({
  logInjection: true,
  analytics: true,
  env: process.env.NODE_ENV,
  service: 'Imports',
  debug: true

ericmustin

require 'ddtrace'

Datadog.configure do |c|
  c.use :rails, service_name: "custom_my_app"
  c.use :rack, distributed_tracing: true, web_service_name: 'nginx-example-frontend', request_queuing: true
  c.tracer tags: { 'env' => 'ruby-testing' }
end

Datadog::Pipeline.before_flush(
  Datadog::Pipeline::SpanProcessor.new { |span|

ericmustin

// cd into root of this directory
// npm install
// npm install -g http-echo-server
// new terminal window from run `http-echo-server`
// node index.js
// see output that server receives in output.txt

tracer = require('dd-trace').init()

const fetch = require('node-fetch');

ericmustin

const tracer = require('dd-trace').init()

tracer.use('aws-sdk', {
  hooks: {
    request: (span, response) => {
      if (response.data && response.data.Attributes && response.data.Attributes.Owner) {
        span.addTags({'aws.sns.topic_owner': response.data.Attributes.Owner.toString()})
      }
    }
  }

ericmustin

setup and usage

• download folder
• cd into root
• npm install
• node index.js

Sample Output

COMP10929:statsd_example eric.mustin$ node index.js

ericmustin

Example app listening on port 5000!
Inject into carrier: {"x-datadog-trace-id":"4975767728554009637","x-datadog-parent-id":"4633592010209712543","x-datadog-sampling-priority":"1"}

ericmustin

var http = require('http');

var results = [];
var j=0;

// Make 50 parallel requests:
for (i=0;i<50;i++) {
    http.request({
        host:'127.0.0.1',
        port: 3000,

ericmustin

Demonstrate capturing hapi/BOOM 400 level errors

Setup

• cd into the root of this directory
• npm install
• ensure datadog agent is installed running locally and listening for traces at port 8126, instructions here
• node hapi_example.js
• from a seperate terminal window from the root of this directory run a few times
• node example_http_request.js