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Allow specifying `Metadata` with `GrpcServiceBuilder.addExceptionMapping()`

See original GitHub issue

It is currently not possible for a user to specify a custom Metadata when an exception is translated into a Status via the exception mapping function built from what’s specified with GrpcServiceBuilder.addExceptionMapping(). It may be useful if a user can specify Metadata as well as Status when adding an exception mapping:

GrpcService
  .builder()
  ...
  .addExceptionMapping(MyException.class, Status.INTERNAL_ERROR, myMetadata)
  .build();

We’re gonna have to update the signature of GrpcStatusFunction.apply() to support this use case. GrpcStatusFunction is an unstable API fortunately (?).

As a workaround, a user can write an interceptor like this (Kotlin code by @okue).

Issue Analytics

State:
Created 3 years ago
Reactions:5
Comments:6 (3 by maintainers)

Top GitHub Comments

4reactions

okuecommented, Feb 3, 2021

Currently, I tried updating the signature of GrpcStatusFunction. https://github.com/okue/armeria/pull/6

After refactoring, writing test cases and examples, I’ll send a pull request.

0reactions

okuecommented, Feb 1, 2021

Ah, I don’t mention addExceptionMapping().

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