OpenTelemetry Config Generator

package main

import (
	"context"
	"log"

	"go.opentelemetry.io/otel"
	"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
	"go.opentelemetry.io/otel/sdk/resource"
	"go.opentelemetry.io/otel/sdk/trace"
	semconv "go.opentelemetry.io/otel/semconv/v1.24.0"
)

func initTracer() func() {
	ctx := context.Background()

	exporter, err := otlptracehttp.New(ctx,
		otlptracehttp.WithEndpoint("app.tracekit.dev"),
	)
	if err != nil {
		log.Fatalf("failed to create exporter: %v", err)
	}

	tp := trace.NewTracerProvider(
		trace.WithBatcher(exporter),
		trace.WithSampler(trace.TraceIDRatioBased(1)),
		trace.WithResource(resource.NewWithAttributes(
			semconv.SchemaURL,
			semconv.ServiceName("my-service"),
		)),
	)
	otel.SetTracerProvider(tp)

	return func() { _ = tp.Shutdown(ctx) }
}