Client send getBook(int bookId)to get book satisfy id = bookId. Client send insertBook(Book book) to add a book.
- class Book extends Serializable
- interface BookShelfInterface
- Book getBook(int bookId)
- void insertBook(Book book)
- class BookShelf implement BookShelfInterface
- class Server
- interface BookShelfInterface
- class Client
- gRPC
- Python 3