[#146] node: Add trace_id to logs

Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>

pkg/tracing/trace.go

@@ -0,0 +1,19 @@
+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()
+}