aborting request in ServerInterceptor
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Eugene Strulyov
Jan 7, 2017, 3:27:43 PM1/7/17
to grpc.io
What is the proper way to abort a call in grpc-java ServerInterceptor? interceptCall() returns
ServerCall.Listener() and the javadoc says it must not be null. The only examples I found return next.startCall().
thanks,
Eugene
Josh Humphries
Jan 7, 2017, 4:03:18 PM1/7/17
to Eugene Strulyov, grpc.io
In that case, you'd return a dummy (no op) listener and immediately call "serverCall.close(errorStatus, optionalTrailers)" to abort the operation.
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Eugene Strulyov
Jan 7, 2017, 4:09:03 PM1/7/17
to grpc.io, eugene....@gmail.com, j...@fullstory.com
Will the following code work?
Metadata trailers = new Metadata();
call.close(Status.UNAUTHENTICATED, trailers);
return new ServerCall.Listener<ReqT>() {};
Also, do I need to put anything in trailers or is it just to provide additional information to the caller?
thanks,
Eugene
On Saturday, January 7, 2017 at 1:03:18 PM UTC-8, Josh Humphries wrote:
In that case, you'd return a dummy (no op) listener and immediately call "serverCall.close(errorStatus, optionalTrailers)" to abort the operation.
On Sat, Jan 7, 2017 at 3:27 PM, Eugene Strulyov <eugene....@gmail.com> wrote:
What is the proper way to abort a call in grpc-java ServerInterceptor? interceptCall() returnsServerCall.Listener() and the javadoc says it must not be null. The only examples I found return next.startCall().
thanks,
Eugene
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Josh Humphries
Jan 7, 2017, 4:17:17 PM1/7/17
to Eugene Strulyov, grpc.io
That looks right to me. Give it a try.
Supplying trailer metadata is optional, so the empty metadata in your example should be fine.
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