Hands-On Software Engineering with Golang

Unary RPCs

A unary RPC is equivalent to the request-response model that's used in traditional RESTful APIs. In the following example, we are defining a service with the name AccountService that exposes a CreateAccount method that receives CreateAccountRequest as input and returns a CreateAccountResponse to the caller:

message CreateAccountRequest {  string user_name = 1;  string password = 2;  string email = 3;}message CreateAccountResponse {  string account_id = 1;}service AccountService {  rpc CreateAccount (CreateAccountRequest) returns (CreateAccountResponse);}

Defining the server handler is also quite similar to a regular RESTful API. Consider the following code:

var _ AccountServiceServer = (*server)(nil)func (*server) CreateAccount(_ ...