83 lines
2.4 KiB
Go
83 lines
2.4 KiB
Go
package telemetry
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import (
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"context"
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"errors"
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"time"
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"gitea.nik4nao.com/nik/home-services/discord-bot/internal/logger"
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"go.opentelemetry.io/otel"
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"go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc"
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"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
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"go.opentelemetry.io/otel/metric/noop"
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"go.opentelemetry.io/otel/propagation"
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sdkmetric "go.opentelemetry.io/otel/sdk/metric"
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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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tracenoop "go.opentelemetry.io/otel/trace/noop"
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"gitea.nik4nao.com/nik/home-services/discord-bot/internal/config"
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)
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func Setup(ctx context.Context, serviceName, version string, cfg *config.Config) (shutdown func(context.Context) error, err error) {
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if cfg.OTELEndpoint == "" {
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otel.SetTracerProvider(tracenoop.NewTracerProvider())
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otel.SetMeterProvider(noop.NewMeterProvider())
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logger.FromContext(ctx).Debug("otel disabled — OTEL_ENDPOINT not set")
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return func(context.Context) error { return nil }, nil
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}
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res := resource.NewWithAttributes(
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semconv.SchemaURL,
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semconv.ServiceNameKey.String(serviceName),
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semconv.ServiceVersionKey.String(version),
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)
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traceExp, err := otlptracegrpc.New(ctx,
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otlptracegrpc.WithEndpoint(cfg.OTELEndpoint),
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otlptracegrpc.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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tp := sdktrace.NewTracerProvider(
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sdktrace.WithBatcher(traceExp),
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sdktrace.WithResource(res),
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sdktrace.WithSampler(sdktrace.AlwaysSample()),
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)
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otel.SetTracerProvider(tp)
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otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
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propagation.TraceContext{},
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propagation.Baggage{},
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))
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metricExp, err := otlpmetricgrpc.New(ctx,
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otlpmetricgrpc.WithEndpoint(cfg.OTELEndpoint),
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otlpmetricgrpc.WithInsecure(),
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)
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if err != nil {
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_ = tp.Shutdown(ctx)
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return nil, err
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}
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mp := sdkmetric.NewMeterProvider(
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sdkmetric.WithReader(sdkmetric.NewPeriodicReader(metricExp,
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sdkmetric.WithInterval(30*time.Second))),
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sdkmetric.WithResource(res),
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)
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otel.SetMeterProvider(mp)
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return func(ctx context.Context) error {
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shutdownCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
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defer cancel()
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var shutdownErr error
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if err := tp.Shutdown(shutdownCtx); err != nil {
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shutdownErr = errors.Join(shutdownErr, err)
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}
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if err := mp.Shutdown(shutdownCtx); err != nil {
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shutdownErr = errors.Join(shutdownErr, err)
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}
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return shutdownErr
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}, nil
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}
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