Book Image

Hands-On Enterprise Java Microservices with Eclipse MicroProfile

By : Cesar Saavedra, Heiko W. Rupp, Jeff Mesnil, Pavol Loffay, Antoine Sabot-Durand, Scott Stark
Book Image

Hands-On Enterprise Java Microservices with Eclipse MicroProfile

By: Cesar Saavedra, Heiko W. Rupp, Jeff Mesnil, Pavol Loffay, Antoine Sabot-Durand, Scott Stark

Overview of this book

Eclipse MicroProfile has gained momentum in the industry as a multi-vendor, interoperable, community-driven specification. It is a major disruptor that allows organizations with large investments in enterprise Java to move to microservices without spending a lot on retraining their workforce. This book is based on MicroProfile 2.2, however, it will guide you in running your applications in MicroProfile 3.0. You'll start by understanding why microservices are important in the digital economy and how MicroProfile addresses the need for enterprise Java microservices. You'll learn about the subprojects that make up a MicroProfile, its value proposition to organizations and developers, and its processes and governance. As you advance, the book takes you through the capabilities and code examples of MicroProfile’s subprojects - Config, Fault Tolerance, Health Check, JWT Propagation, Metrics, and OpenTracing. Finally, you’ll be guided in developing a conference application using Eclipse MicroProfile, and explore possible scenarios of what’s next in MicroProfile with Jakarta EE. By the end of this book, you'll have gained a clear understanding of Eclipse MicroProfile and its role in enterprise Java microservices.

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Table of Contents (18 chapters)
Preface
Preface
Who this book is for
What this book covers
To get the most out of this book
Get in touch
Free Chapter
1
Section 1: MicroProfile in the Digital Economy
Section 1: MicroProfile in the Digital Economy
2
Introduction to Eclipse MicroProfile
Introduction to Eclipse MicroProfile
Enterprise Java microservices
Forces that fuel the digital economy
Introducing Eclipse MicroProfile
MicroProfile value proposition
Summary
Questions
3
Governance and Contributions
Governance and Contributions
Current Eclipse MicroProfile governance
MicroProfile Starter
Summary
Questions
4
Section 2: MicroProfile's Current Capabilities
Section 2: MicroProfile's Current Capabilities
5
MicroProfile Config and Fault Tolerance
MicroProfile Config and Fault Tolerance
Understanding Eclipse MicroProfile Config
Understanding Eclipse MicroProfile Fault Tolerance
Summary
Questions
Further reading
6
MicroProfile Health Check and JWT Propagation
MicroProfile Health Check and JWT Propagation
Technical requirements
Understanding health checks and how MicroProfile handles them
Using JSON Web Token Propagation in MicroProfile
Summary
Questions
7
MicroProfile Metrics and OpenTracing
MicroProfile Metrics and OpenTracing
MicroProfile Metrics
MicroProfile OpenTracing
Summary
Questions
8
MicroProfile OpenAPI and Type-Safe REST Client
MicroProfile OpenAPI and Type-Safe REST Client
Introduction to MicroProfile OpenAPI and its capabilities
Introduction to the MicroProfile REST Client and its capabilities
Summary
Questions
9
Section 3: MicroProfile Implementations and Roadmap
Section 3: MicroProfile Implementations and Roadmap
10
MicroProfile Implementations, Quarkus, and Interoperability via the Conference Application
MicroProfile Implementations, Quarkus, and Interoperability via the Conference Application
Current MicroProfile implementations
Quarkus
MicroProfile interoperability – the conference application
Summary
Questions
11
Section 4: A Working MicroProfile Example
Section 4: A Working MicroProfile Example
12
A Working Eclipse MicroProfile Code Sample
A Working Eclipse MicroProfile Code Sample
Technical requirements
Sample architecture of a multiservice MicroProfile application
Summary
Questions
Further reading
13
Section 5: A Peek into the Future
Section 5: A Peek into the Future
14
Reactive Programming and Future Developments
Reactive Programming and Future Developments
Reactive programming work in Eclipse MicroProfile
MicroProfile future developments
Summary
Questions
Further reading
15
Using MicroProfile in Multi-Cloud Environments
Using MicroProfile in Multi-Cloud Environments
Using Eclipse MicroProfile for cloud-native application development
Developing and running MicroProfile applications across clouds
Summary
Questions
16
Assessments
Assessments
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
17
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Other Books You May Enjoy
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Sample architecture of a multiservice MicroProfile application

The sample application we will go over in this chapter is composed of an HTML frontend, two MicroProfile-based microservices, two external services we spin up using Docker, and an external time service on the web we have no control over. The architecture of our sample application is shown in the following diagram:

The key elements in this diagram include the following:

  • Svcs1 Image: This is a collection of REST endpoints that make use of MP-HC, MP-Metrics, MP-OT, MP-JWT, MP-OAPI, MP-FT, and MP-RC in a Quarkus runtime.
  • Svcs2 Image: This is a collection of REST endpoints that make use of MP-HC and MP-Metrics in a Quarkus runtime.
  • Jaeger: This a Docker image that runs the Jaeger server for the collection of trace loggings.
  • KeyCloak: This is a Docker image that runs a KeyCloak 6.0.0 server instance.
  • WorldClock: This is...
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