gRPC-JSON transcoder filter syntax unclear

[m...@clicktherapeutics.com]

Hello,

I am trying to get a gRPC-JSON transcoder working. According to the docs, the filter's "config" key has a key "services", which in the example documentation looks like:

"services": [ "grpc.service.Service" ]

I have generated a proto.pb descriptor set file from a proto file that looks like this:

syntax = "proto3";

package auth;

import "google/api/annotations.proto";

service Authenticator {

  rpc CreateUserSession(CreateUserSessionRequest) returns (CreateUserSessionResponse) {

    option (google.api.http) = {

      post: "/sessions"

      body: "*"

    };

  }

  rpc AuthenticateUser(AuthenticateUserRequest) returns (AuthenticateUserResponse) {}

  rpc AuthenticateService(AuthenticateServiceRequest) returns (AuthenticateServiceResponse) {}

}

Given this proto definition, how am I supposed to be able to reference the Authenticator service in the envoy config? Is it grpc.$package_name.$service_name (grpc.auth.Authenticator)? I keep getting the error "transcoding_filter: Could not find 'grpc.auth.Authenticator' in the proto descriptor", but its hard for me to figure out whether the problem is with my envoy config or my generated proto.pb because I don't know how the "services" values are supposed to relate to the proto.rb file.

Thanks in advance.

[m...@clicktherapeutics.com]

tried all possible permutations and found that $package.$service_name (in this case auth.Authenticator) did the trick. perhaps the documentation could be more clear at some point. 

[Matt Klein]

Please submit a documentation PR.

Thanks,

Matt

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Matt Klein

Software Engineer

mkl...@lyft.com

https://calendly.com/mattklein123