Trace

• Introduction
• Configuration
  • Format
• End to end example
  • Running OpenCensus Service
  • Running Application code
• Results
  • All traces
• References

Introduction

The OpenCensus Service allows you to export traces that are collected from client libraries and receivers to Stackdriver.

Configuration

In the Service’s YAML configuration file, under section “exporters” and sub-section “stackdriver” and configure fields:

Format

exporters:
  stackdriver:
    project: "<google_cloud_platform_project_id>"
    enable_tracing: <true or false>

End to end example

In this end-to-end example, we’ll have the OpenCensus Service running and a couple of Go applications that use the Go ocagent-exporter to send over traces to the OpenCensus Service and then to Stackdriver.

Running OpenCensus Service

On starting the OpenCensus Service with the configuration below:

exporters:
  stackdriver:
    project: "census-demos"
    enable_tracing: true

Before running the OpenCensus Service, we need to make sure that we have our Google Application Credentials resolvable either locally or after following Application Authentication

Agent

GOOGLE_APPLICATION_CREDENTIALS=gcp_creds.json ./bin/ocagent --config oca.yaml

Running Application Code

And then running the ocagent-go-exporter main.go application

$ GO111MODULE=on go run example/main.go
#0: LineLength: 469By
#1: LineLength: 794By
Latency: 132.649ms
#0: LineLength: 448By
#1: LineLength: 420By
#2: LineLength: 486By
#3: LineLength: 473By
Latency: 1066.808ms

Results

On navigating to the Stackdriver Trace UI at https://console.cloud.google.com/traces

All traces

References