GRPC and Protobuffers

gRPC lets a client call operations on another application. Protocol Buffers define the service and message schema used to generate compatible Go code.

Run the Protocol Buffer compiler (protoc) with the following command:

protoc --go_out=. --go_opt=paths=source_relative \
    --go-grpc_out=. --go-grpc_opt=paths=source_relative \
    protobuffers/api.proto

Set up your .proto file as example from below

syntax = "proto3";

option go_package = "lukas8219/grpc-playground";

package playground;

service Playground {
  rpc SayHello (HelloRequest) returns (HelloReply) {}
}

message HelloRequest {
  string name = 1;
}

message HelloReply {
  string message = 1;
}