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I've written this simple go server and client which client sends two numbers, and the server replies with the sum, and it works. Now I'm trying to set up a grpc-gateway using grpc API configuration and change the client's request from GRPC to rest.

I am using this tutorial and in the below section, I can not create gw, while there is no error:

protoc -I/usr/local/include -I. \
  -I$GOPATH/src \
  -I$GOPATH/src/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis \
  --grpc-gateway_out=logtostderr=true,grpc_api_configuration=path/to/your_service.yaml:. \
  path/to/your_service.proto

I used this: 

protoc -I/usr/local/include -I.   -I$GOPATH/src   -I$GOPATH/src/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis --grpc-gateway_out=logtostderr=true,grpc_api_configuration=$GOPATH/src/grpc-test/sum.yaml:. ./sum.proto

and after this problem I searched and I found this way, which is neither working (no error and no output!):

protoc -I/usr/local/include -I. -I$GOPATH/src -I$GOPATH/src/github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis --plugin=protoc-gen-grpc-gateway=$GOPATH/bin/protoc-gen-grpc-gateway  --grpc-gateway_out=logtostderr=true,grpc_api_configuration=sum.yaml:. ./sum.proto

I run this in the grpc-test directory which has the below tree:

grpc-test tree

So, what am I doing wrong?

Edit: so this is my sum.yaml:

type: google.api.Service
config_version: 3

http:
  rules:
    - selector: example.YourService.Echo
      post: /v1/example/echo
      body: "*"

And this is sum.proto:

syntax = "proto3";


service ComputeSum {
    rpc ComputeSum (SumRequest) returns (ResultReply) {
    }
}

message SumRequest {
    int32 firstOperand = 1;
    int32 secondOperand = 2;
}

message ResultReply {
    int32 result = 1;
}
no746
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1 Answers1

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The problem is with the selector in, it should be ComputeSum.ComputeSum. I asked this question in grpc-channel in Gophers slack, and Johan Brandhorst helped me with this.

no746
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