instrumentation: use a more appropriate propagator.

Use a correct propagator for ttRPC (and gRPC) span propagation.

Signed-off-by: Krisztian Litkey <[email protected]>

pkg/instrumentation/tracing/tracing.go

@@ -27,6 +27,7 @@ import (
 	"go.opentelemetry.io/otel/exporters/jaeger"
 	"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
 	"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
+	"go.opentelemetry.io/otel/propagation"
 	"go.opentelemetry.io/otel/sdk/resource"
 	sdktrace "go.opentelemetry.io/otel/sdk/trace"
 	semconv "go.opentelemetry.io/otel/semconv/v1.17.0"
@@ -168,6 +169,12 @@ func (t *tracing) start(options ...Option) error {
 
 	otel.SetTracerProvider(provider)
 
+	propagator := propagation.NewCompositeTextMapPropagator(
+		propagation.TraceContext{},
+		propagation.Baggage{},
+	)
+	otel.SetTextMapPropagator(propagator)
+
 	return nil
 }