Services
Finally, the last concept we are going to see is service. service is designed for Protobuf interaction with RPC frameworks, such as gRPC. They define a type-safe contract that the server should implement and that the client can call:
EBNF – Service syntax
rpc = "rpc" ident "(" [ "stream" ] messageType ")" "returns" "(" [ "stream" ] messageType ")" (( "{" option "}" ) | ";")
service = "service" ident "{" { option | rpc } "}" For example, we could have the following service:
service BookService {
rpc ListBooks(ListBooksRequest) returns (ListBooksResponse);
rpc GetBook(GetBookRequest) returns (Book);
rpc CreateBook(CreateBookRequest) returns (Book);
rpc UpdateBook(UpdateBookRequest) returns (Book);
rpc DeleteBook(DeleteBookRequest) returns (google.protobuf.Empty...
