Claus Ibsen created CAMEL-26550:
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Summary: camel-grpc - with consumerStrategy=PROPAGATION and
routeControlledStreamObserver=true the route cannot control the reply
Key: CAMEL-26550
URL: https://issues.apache.org/jira/browse/CAMEL-26550
Project: Camel
Issue Type: Bug
Reporter: Claus Ibsen
Found while fixing CAMEL-26515 (PR #29112).
{{GrpcConsumer}} accepts {{consumerStrategy=PROPAGATION}} together with
{{routeControlledStreamObserver=true}}. For client and bidi streaming calls,
{{GrpcRequestPropagationStreamObserver}} (lines 41 and 61) never sets the
{{grpcResponseObserver}} exchange property, and still sends the route body as
the reply itself. So a route that uses the {{toRouteControlledStreamObserver}}
producer fails (no response observer), and the reply is not controlled by the
route.
The docs say to use {{DELEGATION}} for a route-controlled stream observer.
Options:
* reject the combination when the consumer starts, with a clear message
pointing to DELEGATION (recommended), or
* support it: set the property and do not send the body in the propagation
observer.
_Claude Code on behalf of Claus Ibsen (davsclaus)_
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