grpc-gateway

You can get full details of working of grpc gateway in OFFICIAL GUIDE if you are interested. But In this file, I am going to explain how this gateway works.

Working Of This File

Add your proto files in the folder proto, and write respective HTTP-RULES as defined in grpc-transcoding-tutorial from Google cloud. Note: You don't need to host in google cloud, but only for the http-rules defined to work with grpc-gateway.

After adding respective proto inside proto folder, and giving http-endpoints to your grpc services, generate the required go files by running command given below:

bash generate.sh

Required files will be generated in the folder generated

Now, on the main.go file, add the following code:

err := gw.Register<YOUR-GRPC-SERVICE-NAME>FromEndpoint(ctx, mux, *grpcServerEndpoint, opts)
	if err != nil {
		return err
	}

The service name of your grpc server is:

service <YOUR-GRPC-SERVICE-NAME> {
  rpc 1 {}
  rpc 2 {}
  .
  .
  .
  
}

Note: You can change your grpc server port and gateway port inside main.go Now run the gateway by running main function in main.go, or simply by command:

go run main.go  

Thank You !