KJ Tsanaktsidis 2082ee8bb5 Implement service & method descriptor lookup in Ruby (#15817) ... This PR implements lookup of service descriptor and method descriptor objects in Ruby as described in issue https://github.com/protocolbuffers/protobuf/issues/14891. It contains three implementations - one for the CRuby extension API, one for JRuby, and one for FFI. With this patch, * `DescriptorPool#lookup('fully.qualified.service.name')` works and returns a `Google::Protobuf::ServiceDescriptor` object * You can call `#options` on that to get the service options * You can call `#methods` on that to get the services' methods as `Google::Protobuf::MethodDescriptor` objects, * You can call `MethodDescriptor#options` to get method options * You can also get the streaming flags & input/output types of the method with `#input_type`, `#output_type`, `#client_streaming`, and `#server_streaming`. In order to make the FFI implementation work, I had to mark some more methods in the UPB header as exported - I guess that's something which will have to be done on the UPB side, like this 01fed1cc1b CC @dazuma & @haberman from the original issue, and @JasonLunn (since you work on protobuf it seems - small world!) I apologies for the large volume of copy-pasta'd code from the existing descriptor class implementations into the new ones - I felt this was probably better than designing new abstractions to reduce it off the bat though; this feels like it "fits in" with the existing implementation. Closes #15817 COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/15817 from KJTsanaktsidis:ktsanaktsidis/add_service_method_descriptors 54d7218431 PiperOrigin-RevId: 618221016		2024-03-22 10:35:56 -07:00
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ProtobufJavaService.java	Implement service & method descriptor lookup in Ruby (#15817)	2024-03-22 10:35:56 -07:00