frostfs-node/pkg/tracing/trace.go

package tracing

import (
	"context"

	"go.opentelemetry.io/otel/trace"
)

var emptyTraceID = [16]byte{}

// GetTraceID retrieves the trace ID from the provided context.
// It returns an empty string if no trace ID is found.
func GetTraceID(ctx context.Context) string {
	span := trace.SpanFromContext(ctx)
	if span == nil || span.SpanContext().TraceID() == emptyTraceID {
		return ""
	}
	return span.SpanContext().TraceID().String()
}