- No: by default, any REST endpoint will have OpenAPI generated for it even if none of the MP OpenAPI annotations are used.
- Yes: you can choose to use as many or as few of the MP OpenAPI annotations as you wish, to represent the REST endpoints in your microservice.
- The notion is that you predefine the expected contracts of your endpoints and encapsulate these in OpenAPI documents that can be bundled with your microservice.
- No: you just need to know what the formats of the request and response are, and then you can create your own type-safe interface.
- By using the .../mp-rest/url MP Config setting, where ... is either the interface name of the type-safe interface or the configKey passed to the RegisterRestClient annotation.
- One way is to register a ClientHeadersFactory implementation. Another is to list the headers in the org.eclipse.microprofile.rest.client.propagateHeaders...
Hands-On Enterprise Java Microservices with Eclipse MicroProfile
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Hands-On Enterprise Java Microservices with Eclipse MicroProfile
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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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Hands-On Enterprise Java Microservices with Eclipse MicroProfile
Table of Contents (18 chapters)
Preface
Free Chapter
Section 1: MicroProfile in the Digital Economy
Introduction to Eclipse MicroProfile
Governance and Contributions
Section 2: MicroProfile's Current Capabilities
MicroProfile Config and Fault Tolerance
MicroProfile Health Check and JWT Propagation
MicroProfile Metrics and OpenTracing
MicroProfile OpenAPI and Type-Safe REST Client
Section 3: MicroProfile Implementations and Roadmap
MicroProfile Implementations, Quarkus, and Interoperability via the Conference Application
Section 4: A Working MicroProfile Example
A Working Eclipse MicroProfile Code Sample
Section 5: A Peek into the Future
Reactive Programming and Future Developments
Using MicroProfile in Multi-Cloud Environments
Assessments
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