fix

Author: chargome

dev-packages/node-integration-tests/suites/tracing/httpIntegration-streamed/test.ts

@@ -21,6 +21,7 @@ describe('httpIntegration-streamed', () => {
             expect(serverSpan?.is_segment).toBe(true);
             expect(serverSpan?.name).toBe('GET /test');
             expect(serverSpan?.attributes?.['sentry.source']).toEqual({ type: 'string', value: 'route' });
+            expect(serverSpan?.attributes?.['sentry.span.source']).toEqual({ type: 'string', value: 'route' });
           },
         })
         .start();

packages/core/src/tracing/spans/captureSpan.ts

@@ -70,6 +70,14 @@ export function captureSpan(span: Span, client: Client): SerializedStreamedSpanW
       ? applyBeforeSendSpanCallback(spanJSON, beforeSendSpan)
       : spanJSON;
 
+  // Backfill span data from OTel semantic conventions when not explicitly set.
+  // OTel-originated spans don't have sentry.op, description, etc. — the non-streamed path
+  // infers these in the SentrySpanExporter, but streamed spans skip the exporter entirely.
+  // Access `kind` via duck-typing — OTel span objects have this property but it's not on Sentry's Span type.
+  // This must run before the sentry.span.source backfill below, so that inferred sentry.source is picked up.
+  const spanKind = (span as { kind?: number }).kind;
+  inferSpanDataFromOtelAttributes(processedSpan, spanKind);
+
   // Backfill sentry.span.source from sentry.source. Only `sentry.span.source` is respected by Sentry.
   // TODO(v11): Remove this backfill once we renamed SEMANTIC_ATTRIBUTE_SENTRY_SOURCE to sentry.span.source
   const spanNameSource = processedSpan.attributes?.[SEMANTIC_ATTRIBUTE_SENTRY_SOURCE];
@@ -81,13 +89,6 @@ export function captureSpan(span: Span, client: Client): SerializedStreamedSpanW
     });
   }
 
-  // Backfill span data from OTel semantic conventions when not explicitly set.
-  // OTel-originated spans don't have sentry.op, description, etc. — the non-streamed path
-  // infers these in the SentrySpanExporter, but streamed spans skip the exporter entirely.
-  // Access `kind` via duck-typing — OTel span objects have this property but it's not on Sentry's Span type.
-  const spanKind = (span as { kind?: number }).kind;
-  inferSpanDataFromOtelAttributes(processedSpan, spanKind);
-
   return {
     ...streamedSpanJsonToSerializedSpan(processedSpan),
     _segmentSpan: segmentSpan,