syntax="proto3"; package services; option go_package = "/prod"; import "google/api/annotations.proto"; import "models.proto"; message OrderRequest{ ProdMain prod_main = 1; } message OrderResponse{ string status=1; string message=2; } service OrderService{ rpc NewOrder(OrderRequest)returns(OrderResponse){ option (google.api.http) = { post: "/v1/orders" body: "prod_main" }; } }