/
trace.go
41 lines (36 loc) · 1.16 KB
/
trace.go
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package trace
import (
"context"
"framework/pkg/log"
"github.com/go-kit/log/level"
"github.com/grpc-ecosystem/go-grpc-middleware/v2/interceptors/logging"
"go.opentelemetry.io/otel"
stdout "go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
"go.opentelemetry.io/otel/propagation"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
"go.opentelemetry.io/otel/trace"
"os"
)
var LogTraceID func(ctx context.Context) logging.Fields
func Init() error {
LogTraceID = func(ctx context.Context) logging.Fields {
if span := trace.SpanContextFromContext(ctx); span.IsSampled() {
return logging.Fields{"traceID", span.TraceID().String()}
}
return nil
}
// Set up OTLP tracing (stdout for debug).
exporter, err := stdout.New(stdout.WithPrettyPrint())
if err != nil {
level.Error(log.Logger).Log("err", err)
os.Exit(1)
}
tp := sdktrace.NewTracerProvider(
sdktrace.WithSampler(sdktrace.AlwaysSample()),
sdktrace.WithBatcher(exporter),
)
otel.SetTracerProvider(tp)
otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
defer func() { _ = exporter.Shutdown(context.Background()) }()
return nil
}