book

Spring Microservices in Action

Name: Spring Microservices in Action
ISBN: 9781617293986

by John Carnell, Kalpit Patel

July 2017

Beginner to intermediate

384 pages

11h 15m

English

Manning Publications

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Spring Microservices in Action
John Carnell
Copyright
Dedication
Brief Table of Contents
Table of Contents
Preface
Acknowledgments
About this Book
You should read this book ifHow this book is organizedAbout the codeAuthor Online
About the Author
About the Cover Illustration

Chapter 1. Welcome to the cloud, Spring
1.1. What’s a microservice?1.2. What is Spring and why is it relevant to microservices?1.3. What you’ll learn in this book1.4. Why is this book relevant to you?1.5. Building a microservice with Spring Boot1.6. Why change the way we build applications?1.7. What exactly is the cloud?1.8. Why the cloud and microservices?1.9. Microservices are more than writing the code1.9.1. Core microservice development pattern1.9.2. Microservice routing patterns1.9.3. Microservice client resiliency patterns1.9.4. Microservice security patterns1.9.5. Microservice logging and tracing patterns1.9.6. Microservice build/deployment patterns1.10. Using Spring Cloud in building your microservices1.10.1. Spring Boot1.10.2. Spring Cloud Config1.10.3. Spring Cloud service discovery1.10.4. Spring Cloud/Netflix Hystrix and Ribbon1.10.5. Spring Cloud/Netflix Zuul1.10.6. Spring Cloud Stream1.10.7. Spring Cloud Sleuth1.10.8. Spring Cloud Security1.10.9. What about provisioning?1.11. Spring Cloud by example1.12. Making sure our examples are relevant1.13. Summary
Chapter 2. Building microservices with Spring Boot
2.1. The architect’s story: designing the microservice architecture2.1.1. Decomposing the business problem2.1.2. Establishing service granularity2.1.3. Talking to one another: service interfaces2.2. When not to use microservices2.2.1. Complexity of building distributed systems2.2.2. Server sprawl2.2.3. Type of application2.2.4. Data transformations and consistency2.3. The developer’s tale: building a microservice with Spring Boot and Java2.3.1. Getting started with the skeleton project2.3.2. Booting your Spring Boot application: writing the Bootstrap class2.3.3. Building the doorway into the microservice: the Spring Boot controller2.4. The DevOps story: building for the rigors of runtime2.4.1. Service assembly: packaging and deploying your microservices2.4.2. Service bootstrapping: managing configuration of your microservices2.4.3. Service registration and discovery: how clients communicate with - your microservices2.4.4. Communicating a microservice’s health2.5. Pulling the perspectives together2.6. Summary
Chapter 3. Controlling your configuration with Spring Cloud configuration server
3.1. On managing configuration (and complexity)3.1.1. Your configuration management architecture3.1.2. Implementation choices3.2. Building our Spring Cloud configuration server3.2.1. Setting up the Spring Cloud Config Bootstrap class3.2.2. Using Spring Cloud configuration server with the filesystem3.3. Integrating Spring Cloud Config with a Spring Boot client3.3.1. Setting up the licensing service Spring Cloud Config server dependencies3.3.2. Configuring the licensing service to use Spring Cloud Config3.3.3. Wiring in a data source using Spring Cloud configuration server3.3.4. Directly Reading Properties using the @Value Annotation3.3.5. Using Spring Cloud configuration server with Git3.3.6. Refreshing your properties using Spring Cloud configuration server3.4. Protecting sensitive configuration information3.4.1. Download and install Oracle JCE jars needed for encryption3.4.2. Setting up an encryption key3.4.3. Encrypting and decrypting a property3.4.4. Configure microservices to use encryption on the client side3.5. Closing thoughts3.6. Summary
Chapter 4. On service discovery
4.1. Where’s my service?4.2. On service discovery in the cloud4.2.1. The architecture of service discovery4.2.2. Service discovery in action using Spring and Netflix Eureka4.3. Building your Spring Eureka Service4.4. Registering services with Spring Eureka4.5. Using service discovery to look up a service4.5.1. Looking up service instances with Spring DiscoveryClient4.5.2. Invoking services with Ribbon-aware Spring RestTemplate4.5.3. Invoking services with Netflix Feign client4.6. Summary
Chapter 5. When bad things happen: client resiliency patterns with Spring Cloud and Netflix Hystrix
5.1. What are client-side resiliency patterns?5.1.1. Client-side load balancing5.1.2. Circuit breaker5.1.3. Fallback processing5.1.4. Bulkheads5.2. Why client resiliency matters5.3. Enter Hystrix5.4. Setting up the licensing server to use Spring Cloud and Hystrix5.5. Implementing a circuit breaker using Hystrix5.5.1. Timing out a call to the organization microservice5.5.2. Customizing the timeout on a circuit breaker5.6. Fallback processing5.7. Implementing the bulkhead pattern5.8. Getting beyond the basics; fine-tuning Hystrix5.8.1. Hystrix configuration revisited5.9. Thread context and Hystrix5.9.1. ThreadLocal and Hystrix5.9.2. The HystrixConcurrencyStrategy in action5.10. Summary
Chapter 6. Service routing with Spring Cloud and Zuul
6.1. What is a services gateway?6.2. Introducing Spring Cloud and Netflix Zuul6.2.1. Setting up the Zuul Spring Boot project6.2.2. Using Spring Cloud annotation for the Zuul service6.2.3. Configuring Zuul to communicate with Eureka6.3. Configuring routes in Zuul6.3.1. Automated mapping routes via service discovery6.3.2. Mapping routes manually using service discovery6.3.3. Manual mapping of routes using static URLs6.3.4. Dynamically reload route configuration6.3.5. Zuul and service timeouts6.4. The real power of Zuul: filters6.5. Building your first Zuul pre-filter generating correlation IDs6.5.1. Using the correlation ID in your service calls6.6. Building a post filter receiving correlation IDs6.7. Building a dynamic route filter6.7.1. Building the skeleton of the routing filter6.7.2. Implementing the run() method6.7.3. Forwarding the route6.7.4. Pulling it all together6.8. Summary
Chapter 7. Securing your microservices
7.1. Introduction to OAuth27.2. Starting small: using Spring and OAuth2 to protect a single endpoint7.2.1. Setting up the EagleEye OAuth2 authentication service7.2.2. Registering client applications with the OAuth2 service7.2.3. Configuring EagleEye users7.2.4. Authenticating the user7.3. Protecting the organization service using OAuth27.3.1. Adding the Spring Security and OAuth2 jars to the individual services7.3.2. Configuring the service to point to your OAuth2 authentication service7.3.3. Defining who and what can access the service7.3.4. Propagating the OAuth2 access token7.4. JavaScript Web Tokens and OAuth27.4.1. Modifying the authentication service to issue JavaScript Web Tokens7.4.2. Consuming JavaScript Web Tokens in your microservices7.4.3. Extending the JWT Token7.4.4. Parsing a custom field out of a JavaScript token7.5. Some closing thoughts on microservice securityUse HTTPS/Secure Sockets Layer (SSL) for all service communicationUse a services gateway to access your microservicesZone your services into a public API and private APILimit the attack surface of your microservices by locking down un- nneeded network ports7.6. Summary
Chapter 8. Event-driven architecture with Spring Cloud Stream
8.1. The case for messaging, EDA, and microservices8.1.1. Using synchronous request-response approach to communicate state change8.1.2. Using messaging to communicate state changes between services8.1.3. Downsides of a messaging architecture8.2. Introducing Spring Cloud Stream8.2.1. The Spring Cloud Stream architecture8.3. Writing a simple message producer and consumer8.3.1. Writing the message producer in the organization service8.3.2. Writing the message consumer in the licensing service8.3.3. Seeing the message service in action8.4. A Spring Cloud Stream use case: distributed caching8.4.1. Using Redis to cache lookups8.4.2. Defining custom channels8.4.3. Bringing it all together: clearing the cache when a message is received8.5. Summary
Chapter 9. Distributed tracing with Spring Cloud Sleuth and Zipkin
9.1. Spring Cloud Sleuth and the correlation ID9.1.1. Adding Spring Cloud sleuth to licensing and organization9.1.2. Anatomy of a Spring Cloud Sleuth trace9.2. Log aggregation and Spring Cloud Sleuth9.2.1. A Spring Cloud Sleuth/Papertrail implementation in action9.2.2. Create a Papertrail account and configure a syslog connector9.2.3. Redirecting Docker output to Papertrail9.2.4. Searching for Spring Cloud Sleuth trace IDs in Papertrail9.2.5. Adding the correlation ID to the HTTP response with Zuul9.3. Distributed tracing with Open Zipkin9.3.1. Setting up the Spring Cloud Sleuth and Zipkin dependencies9.3.2. Configuring the services to point to Zipkin9.3.3. Installing and configuring a Zipkin server9.3.4. Setting tracing levels9.3.5. Using Zipkin to trace transactions9.3.6. Visualizing a more complex transaction9.3.7. Capturing messaging traces9.3.8. Adding custom spans9.4. Summary
Chapter 10. Deploying your microservices
10.1. EagleEye: setting up your core infrastructure in the cloud10.1.1. Creating the PostgreSQL database using Amazon RDS10.1.2. Creating the Redis cluster in Amazon10.1.3. Creating an ECS cluster10.2. Beyond the infrastructure: deploying EagleEye10.2.1. Deploying the EagleEye services to ECS manually10.3. The architecture of a build/deployment pipeline10.4. Your build and deployment pipeline in action10.5. Beginning your build deploy/pipeline: GitHub and Travis CI10.6. Enabling your service to build in Travis CI10.6.1. Core build run-time configuration10.6.2. Pre-build tool installations10.6.3. Executing the build10.6.4. Tagging the source control code10.6.5. Building the microservices and creating the Docker images10.6.6. Pushing the images to Docker Hub10.6.7. Starting the services in Amazon ECS10.6.8. Kicking off the platform tests10.7. Closing thoughts on the build/deployment pipeline10.8. Summary
Appendix A. Running a cloud on your desktop
A.1. Required softwareA.2. Downloading the projects from GitHubA.3. Anatomy of each chapterA.4. Building and compiling the projectsA.5. Building the Docker imageA.6. Launching the services with Docker Compose
Appendix B. OAuth2 grant types
B.1. Password grantsB.2. Client credential grantsB.3. Authorization code grantsB.4. Implicit grantB.5. How tokens are refreshed
Index
List of Figures
List of Tables
List of Listings

Content preview from Spring Microservices in Action

Brief Table of Contents

Copyright

Brief Table of Contents

Table of Contents

Preface

Acknowledgments

About this Book

About the Author

About the Cover Illustration

Chapter 1. Welcome to the cloud, Spring

Chapter 2. Building microservices with Spring Boot

Chapter 3. Controlling your configuration with Spring Cloud configuration server

Chapter 4. On service discovery

Chapter 5. When bad things happen: client resiliency patterns with Spring Cloud and Netflix Hystrix

Chapter 6. Service routing with Spring Cloud and Zuul

Chapter 7. Securing your microservices

Chapter 8. Event-driven architecture with Spring Cloud Stream

Chapter 9. Distributed tracing with Spring Cloud Sleuth and Zipkin

Chapter 10. Deploying your microservices

Appendix A. Running ...

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Cloud Computing

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Security

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Spring Microservices in Action

by John Carnell, Kalpit Patel

Brief Table of Contents

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.