You're reading from Modern API Development with Spring and Spring Boot Design highly scalable and maintainable APIs with REST, gRPC, GraphQL, and the reactive paradigm

Product type Paperback

Published in Jun 2021

Publisher Packt

ISBN-13 9781800562479

Length 582 pages

Edition 1st Edition

Languages

Java

Tools

GraphQL

Concepts

Design

Author (1):

Sourabh Sharma

View More author details

Table of Contents (21) Chapters

Preface

1. Section 1: RESTful Web Services

2. Chapter 1: RESTful Web Service Fundamentals FREE CHAPTER

3. Chapter 2: Spring Concepts and REST APIs

4. Chapter 3: API Specifications and Implementation

5. Chapter 4: Writing Business Logic for APIs

6. Chapter 5: Asynchronous API Design

7. Section 2: Security, UI, Testing, and Deployment

8. Chapter 6: Security (Authorization and Authentication)

9. Chapter 7: Designing a User Interface

10. Chapter 8: Testing APIs

11. Chapter 9: Deployment of Web Services

12. Section 3: gRPC, Logging, and Monitoring

13. Chapter 10: gRPC Fundamentals

14. Chapter 11: gRPC-based API Development and Testing

15. Chapter 12: Logging and Tracing

16. Section 4: GraphQL

17. Chapter 13: GraphQL Fundamentals

18. Chapter 14: GraphQL API Development and Testing

19. Assessments

20. Other Books You May Enjoy

Writing an API interface

In this section, we will write the API interface using the protocol buffer (Protobuf) for payment service. If you recall, this is the piece that you haven't yet implemented the sample e-commerce app.

Before writing the API interface, let's set up the Gradle project first.

Setting up the project

The code for this chapter will contain three projects under the Chapter11 directory – API, server, and client:

API: This is a library project that contains the .proto file and its generated Java classes packaged in a jar file. You will publish the library payment-gateway-api-0.0.1.jar file locally. This library will then be used in both server and client projects.
Server: This project contains the gRPC server that will implement the gRPC services and serve the gRPC requests.
Client: This project contains the gRPC client that will call the gRPC server. You are going to implement a REST call that will call the gRPC server internally...