Book Image

Hands-On Microservices with Spring Boot and Spring Cloud

By : Magnus Larsson
Book Image

Hands-On Microservices with Spring Boot and Spring Cloud

By: Magnus Larsson

Overview of this book

Microservices architecture allows developers to build and maintain applications with ease, and enterprises are rapidly adopting it to build software using Spring Boot as their default framework. With this book, you’ll learn how to efficiently build and deploy microservices using Spring Boot. This microservices book will take you through tried and tested approaches to building distributed systems and implementing microservices architecture in your organization. Starting with a set of simple cooperating microservices developed using Spring Boot, you’ll learn how you can add functionalities such as persistence, make your microservices reactive, and describe their APIs using Swagger/OpenAPI. As you advance, you’ll understand how to add different services from Spring Cloud to your microservice system. The book also demonstrates how to deploy your microservices using Kubernetes and manage them with Istio for improved security and traffic management. Finally, you’ll explore centralized log management using the EFK stack and monitor microservices using Prometheus and Grafana. By the end of this book, you’ll be able to build microservices that are scalable and robust using Spring Boot and Spring Cloud.
Table of Contents (26 chapters)
Title Page

Testing with the local authorization server

In this section we will try out the secured system landscape; that is, we will test all the security components together. We will use the local authorization server to issue access tokens. The following tests will be performed:

  1. First, we build from source and run the test script to ensure that everything fits together.
  2. Next, we learn how to acquire access tokens using OAuth 2.0 grant flows: password, implicit, and code grant flows.
  3. Finally, we will use access tokens to call APIs. We will also verify that an access token issued for a reader client can't be used to call an updating API.

Building and running the automated tests

To build and run automated tests, we perform the following...