76 lines
1.8 KiB
Go
76 lines
1.8 KiB
Go
package otel
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import (
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"context"
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"errors"
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"time"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
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"go.opentelemetry.io/otel/propagation"
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"go.opentelemetry.io/otel/sdk/resource"
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"go.opentelemetry.io/otel/sdk/trace"
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semconv "go.opentelemetry.io/otel/semconv/v1.32.0"
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)
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func SetupOTEL(ctx context.Context, traceEndpoint string) (shutdown func(context.Context) error, err error) {
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var shutdownFuncs []func(context.Context) error
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shutdown = func(ctx context.Context) error {
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var err error
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for _, fn := range shutdownFuncs {
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err = errors.Join(err, fn(ctx))
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}
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shutdownFuncs = nil
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return err
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}
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handlerErr := func(inErr error) {
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err = errors.Join(inErr, shutdown(ctx))
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}
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prop := newPropagator()
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otel.SetTextMapPropagator(prop)
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tracerProvider, err := newTracerProvider(ctx, traceEndpoint)
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if err != nil {
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handlerErr(err)
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return
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}
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shutdownFuncs = append(shutdownFuncs, tracerProvider.Shutdown)
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otel.SetTracerProvider(tracerProvider)
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return
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}
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func newPropagator() propagation.TextMapPropagator {
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return propagation.NewCompositeTextMapPropagator(
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propagation.TraceContext{},
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propagation.Baggage{},
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)
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}
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func newTracerProvider(ctx context.Context, traceEndpoint string) (*trace.TracerProvider, error) {
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traceExporter, err := otlptracehttp.New(ctx,
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otlptracehttp.WithEndpoint(traceEndpoint),
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otlptracehttp.WithInsecure(),
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)
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if err != nil {
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return nil, err
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}
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traceResource, err := resource.New(ctx, resource.WithAttributes(
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semconv.ServiceNamespaceKey.String("t-juice.club"),
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semconv.ServiceName("labmon"),
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))
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if err != nil {
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return nil, err
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}
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tracerProvider := trace.NewTracerProvider(
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trace.WithBatcher(traceExporter, trace.WithBatchTimeout(time.Second)),
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trace.WithResource(traceResource),
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)
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return tracerProvider, nil
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}
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