fix(otel): Always set baggage regardless of active transaction (#6819)

Author: AbhiPrasad

packages/opentelemetry-node/src/propagator.ts

@@ -28,26 +28,23 @@ export class SentryPropagator extends W3CBaggagePropagator {
       return;
     }
 
+    let baggage = propagation.getBaggage(context) || propagation.createBaggage({});
+
     const span = SENTRY_SPAN_PROCESSOR_MAP.get(spanContext.spanId);
     if (span) {
       setter.set(carrier, SENTRY_TRACE_HEADER, span.toTraceparent());
 
       if (span.transaction) {
         const dynamicSamplingContext = span.transaction.getDynamicSamplingContext();
-
-        const baggage = propagation.getBaggage(context) || propagation.createBaggage({});
-        const baggageWithSentryInfo = Object.entries(dynamicSamplingContext).reduce<Baggage>(
-          (b, [dscKey, dscValue]) => {
-            if (dscValue) {
-              return b.setEntry(`${SENTRY_BAGGAGE_KEY_PREFIX}${dscKey}`, { value: dscValue });
-            }
-            return b;
-          },
-          baggage,
-        );
-        super.inject(propagation.setBaggage(context, baggageWithSentryInfo), carrier, setter);
+        baggage = Object.entries(dynamicSamplingContext).reduce<Baggage>((b, [dscKey, dscValue]) => {
+          if (dscValue) {
+            return b.setEntry(`${SENTRY_BAGGAGE_KEY_PREFIX}${dscKey}`, { value: dscValue });
+          }
+          return b;
+        }, baggage);
       }
     }
+    super.inject(propagation.setBaggage(context, baggage), carrier, setter);
   }
 
   /**

packages/opentelemetry-node/src/spanprocessor.ts

@@ -23,7 +23,7 @@ export const SENTRY_SPAN_PROCESSOR_MAP: Map<SentrySpan['spanId'], SentrySpan> =
 export class SentrySpanProcessor implements OtelSpanProcessor {
   public constructor() {
     addGlobalEventProcessor(event => {
-      const otelSpan = trace.getActiveSpan() as OtelSpan;
+      const otelSpan = trace && trace.getActiveSpan && (trace.getActiveSpan() as OtelSpan | undefined);
       if (!otelSpan) {
         return event;
       }

packages/opentelemetry-node/test/propagator.test.ts

@@ -166,6 +166,18 @@ describe('SentryPropagator', () => {
           );
         });
 
+        it('should create baggage without active transaction', () => {
+          const spanContext = {
+            traceId: 'd4cda95b652f4a1592b449d5929fda1b',
+            spanId: '6e0c63257de34c92',
+            traceFlags: TraceFlags.SAMPLED,
+          };
+          const context = trace.setSpanContext(ROOT_CONTEXT, spanContext);
+          const baggage = propagation.createBaggage({ foo: { value: 'bar' } });
+          propagator.inject(propagation.setBaggage(context, baggage), carrier, defaultTextMapSetter);
+          expect(carrier[SENTRY_BAGGAGE_HEADER]).toBe('foo=bar');
+        });
+
         it('should NOT set baggage and sentry-trace header if instrumentation is supressed', () => {
           const spanContext = {
             traceId: 'd4cda95b652f4a1592b449d5929fda1b',