Plugins are no longer supported by protoc-gen-go package. Instead, it requires an additional package called protoc-gen-go-grpc that will generate the gRPC specific code in a separated file.

Also it requires an option in the proto file specifying the go package that refers to.

Author: Orphail

Makefile

@@ -40,8 +40,17 @@ openapi_js:
 
 .PHONY: proto
 proto:
-	protoc --go_out=plugins=grpc:internal/common/genproto/trainer -I api/protobuf api/protobuf/trainer.proto
-	protoc --go_out=plugins=grpc:internal/common/genproto/users -I api/protobuf api/protobuf/users.proto
+	protoc \
+		--proto_path=api/protobuf api/protobuf/trainer.proto \
+		--go_out=internal/common/genproto/trainer --go_opt=paths=source_relative \
+		--go-grpc_opt=require_unimplemented_servers=false \
+		--go-grpc_out=internal/common/genproto/trainer --go-grpc_opt=paths=source_relative \
+
+	protoc \
+		--proto_path=api/protobuf api/protobuf/users.proto \
+		--go_out=internal/common/genproto/users --go_opt=paths=source_relative \
+		--go-grpc_opt=require_unimplemented_servers=false \
+		--go-grpc_out=internal/common/genproto/users --go-grpc_opt=paths=source_relative \
 
 .PHONY: lint
 lint:

api/protobuf/trainer.proto

@@ -2,6 +2,8 @@ syntax = "proto3";
 
 package trainer;
 
+option go_package = "github.com/ThreeDotsLabs/wild-workouts-go-ddd-example/internal/trainer";
+
 import "google/protobuf/empty.proto";
 import "google/protobuf/timestamp.proto";
 

api/protobuf/users.proto

@@ -2,6 +2,8 @@ syntax = "proto3";
 
 package users;
 
+option go_package = "github.com/ThreeDotsLabs/wild-workouts-go-ddd-example/internal/users";
+
 import "google/protobuf/empty.proto";
 
 service UsersService {