52 lines
1.2 KiB
Go
52 lines
1.2 KiB
Go
package trace
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import (
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"context"
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"log/slog"
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"os"
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"time"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
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"go.opentelemetry.io/otel/sdk/resource"
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sdktrace "go.opentelemetry.io/otel/sdk/trace"
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semconv "go.opentelemetry.io/otel/semconv/v1.26.0"
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)
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func Init(ctx context.Context, serviceName string) func() {
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endpoint := os.Getenv("OTEL_EXPORTER_OTLP_ENDPOINT")
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if endpoint == "" {
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return func() {}
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}
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exp, err := otlptracegrpc.New(ctx,
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otlptracegrpc.WithEndpoint(endpoint),
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otlptracegrpc.WithInsecure(),
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)
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if err != nil {
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slog.Warn("trace exporter unavailable, tracing disabled", "err", err)
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return func() {}
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}
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res, err := resource.New(ctx,
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resource.WithAttributes(semconv.ServiceNameKey.String(serviceName)),
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)
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if err != nil {
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slog.Warn("trace resource error", "err", err)
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}
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tp := sdktrace.NewTracerProvider(
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sdktrace.WithBatcher(exp, sdktrace.WithBatchTimeout(5*time.Second)),
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sdktrace.WithResource(res),
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)
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otel.SetTracerProvider(tp)
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return func() {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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if err := tp.Shutdown(ctx); err != nil {
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slog.Error("trace shutdown", "err", err)
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}
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}
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}
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