otelsetup

Shared Go library for OpenTelemetry setup across all microservices.

Shared Documentation

@../docs/claude/architecture.md @../docs/claude/go-services.md @../docs/claude/conventions.md

Library Information

Purpose

Provides standardized OpenTelemetry configuration for tracing, metrics, and logging. Used by all Go microservices to enable observability.

Usage

import "gitlab.com/unboundsoftware/shiny/otelsetup"

// Bootstrap OpenTelemetry SDK
shutdown, err := otelsetup.SetupOTelSDK(ctx, enabled, serviceName, buildVersion, environment)
if err != nil {
    log.Fatal(err)
}
defer shutdown(ctx)

// Wrap HTTP handlers with tracing
http.Handle("/", otelsetup.Handler(myHandler))

Features

Tracing - OTLP HTTP exporter with batch processing
Metrics - OTLP HTTP exporter with periodic reader
Logging - Stdout log exporter
Propagation - TraceContext and Baggage propagation
HTTP Handler - Middleware for automatic span creation

Environment Variables

OTEL_RESOURCE_ATTRIBUTES - Auto-set if not provided (service.name, service.version, service.environment)
Standard OTLP environment variables for endpoint configuration

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