Gin Example

• A Golang Project using Gin, OpenTelemetry, and Datadog.

Idea

• I saw some examples, but they were missing parts, so I decided to create one that could give me an overview.

⚠️ The only update that this code might have is related to logs. I'm still trying to see other ways.

What we have here

• OpenTelemetry Collector

• Datadog Agent

• Golang code Instrumented.

• I decided to keep only the minimum necessary so you don't have to worry about the load of knowledge at once.

How it works

Why I need the Collector

The OpenTelemetry Collector offers a vendor-agnostic implementation of how to receive, process and export telemetry data. It removes the need to run, operate, and maintain multiple agents/collectors.

• Datadog offers the dd_trace library, which can help you get your traces done and communicate directly with the Datadog Agent, but this is vendor lock-in.
  • If that is not a problem, go forward and implement using dd_trace.

Collector

• Collector Documentation

How to Run

• Requirements
  • Datadog API Key
  • Docker

First

• Inside the docker-compose.yaml replace the value of:
  • DD_API_KEY
  • DD_SITE
• You must have these values since you already have a Datadog account.
• ⚠️ Please note that you must update the environment OTEL_EXPORTER_OTLP_ENDPOINT too, because it uses the DD_SITE.

Second

• Execute

docker compose up -d

Third

• Access the project at http://localhost:8080
• Make some GET requests to the endpoint: http://localhost:8080/api/v1/users

Fourth

• Go to Datadog and you should see a project named gin-example.

⚠️ Datadog can take 5 min to update the interface.

Datadog Configuration

• Template

OpenTelemetry Config

• Golang Geting Started