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Microservices for the Masses with Spring Boot, JHipster, and OAuth - Belfast JUG 2019

Microservices for the Masses with Spring Boot, JHipster, and OAuth - Belfast JUG 2019

Microservices are being deployed by many Java Hipsters. If you're working with a large team that needs different release cycles for product components, microservices can be a blessing. If you're working at your VW Restoration Shop and running its online store with your own software, having five services to manage and deploy can be a real pain.

This presentation will show you how to use JHipster to create Angular + Spring Boot apps with a unified front-end. You will leave with the know-how to create your own excellent apps!

Bonus: I'll show you how to use Ionic for JHipster to create native applications on mobile. It's pretty darn slick!

Related blog posts:

* Java Microservices with Spring Boot and Spring Cloud
* Java Microservices with Spring Cloud Config and JHipster
* Secure Reactive Microservices with Spring Cloud Gateway


Matt Raible

September 05, 2019


  1. Microservices for the Masses with Spring Boot, JHipster, and OAuth

    September 5, 2019 Matt Raible | @mraible Photo by Nicolas Raymond on https://www.flickr.com/photos/82955120@N05/7995406469
  2. Do you use microservices?

  3. None
  4. Blogger on raibledesigns.com and developer.okta.com/blog Web Developer and Java Champion

    Father, Husband, Skier, Mountain Biker, Whitewater Rafter Open Source Connoisseur Hi, I’m Matt Raible! Bus Lover Okta Developer Advocate
  5. None
  6. None
  7. None
  8. developer.okta.com

  9. What About You?

  10. Agenda 1. Introduction to Microservices 2. Microservices with JHipster 3.

    Deploying to the Cloud 4. Developing Mobile Apps with JHipster 5. JHipster Roadmap
  11. Part 1 Introduction to Microservices History of Microservices Microservices Architecture

    Philosophy Why Microservices? Demo: A Microservices Architecture with Spring Boot and Spring Cloud
  12. None
  13. Microservices Visionaries

  14. None
  15. “Any organization that designs a system (defined broadly) will produce

    a design whose structure is a copy of the organization's communication structure.” Conway’s Law Melvin Conway 1967
  16. “Do one thing and do it well.”

  17. “You shouldn't start with a microservices architecture. Instead begin with

    a monolith, keep it modular, and split it into microservices once the monolith becomes a problem.” Martin Fowler March 2014
  18. None
  19. start.spring.io

  20. None
  21. None
  22. Demo Using start.spring.io, create: A service registry A gateway A

    catalog service Create an endpoint in the catalog service Create a filtered endpoint in the gateway Show failover capabilities Show Spring Security OAuth https://github.com/oktadeveloper/java- microservices-examples
  23. Java Microservices with Spring Boot and Spring Cloud https://developer.okta.com/blog/2019/05/22/java-microservices-spring-boot-spring-cloud

  24. Microservices with JHipster What is JHipster? Installing and Using JHipster

    JHipster’s Microservice Features Progressive Web Applications Overview Part 2
  25. What is JHipster? + =

  26. JHipster jhipster.tech JHipster is a development platform to generate, develop

    and deploy Spring Boot + Angular/React Web applications and Spring microservices. and Vue! ✨
  27. JHipster is Inclusive https://github.com/jhipster/jhipster-artwork

  28. A powerful workflow to build your application with Webpack and

    Maven/Gradle JHipster Goals A sleek, modern, mobile-first front-end with modern frameworks A high-performance and robust Java stack on the server side with Spring Boot A robust microservice architecture with JHipster Registry, Netflix OSS, Elastic Stack, and Docker
  29. How to Use JHipster Install JHipster and Yeoman, using npm:

    npm install -g generator-jhipster Create a directory and cd into it: mkdir newapp && cd newapp Run it! jhipster
  30. Microservices with JHipster

  31. https://www.jhipster.tech/microservices-architecture

  32. yelp.com/callback Back to redirect URI with authorization code Exchange code

    for access token and ID token accounts.google.com Email ********** Go to authorization server Redirect URI: yelp.com/cb Scope: openid profile Authorization Server yelp.com Connect with Google Resource owner Client accounts.google.com 
 Allow Yelp to access your public profile and contacts? No Yes Request consent from resource owner Hello Matt! accounts.google Get user info 
 with access token /userinfo OAuth 2.0 and OIDC
  33. Monolith Examples JHipster 6 Demo github.com/mraible/jhipster6-demo youtu.be/uQqlO3IGpTU 21-Points Health github.com/mraible/21-points

  34. Progressive Web Apps Originate from a secure origin, load while

    offline, and reference a web app manifest.
  35. Progressive Web Apps Can be installed on your mobile device,

    look and act like a native application, but are distributed through the web.
  36. Progressive Web Apps Are fast!

  37. Enable PWA in JHipster <script> if ('serviceWorker' in navigator) {

    window.addEventListener('load', function() { navigator.serviceWorker.register('/service-worker.js') .then(function () { console.log('Service Worker Registered'); }); }); } </script> gateway/src/main/webapp/index.html
  38. Force HTTPS in Spring Boot gateway/src/main/java/com/okta/developer/gateway/config/SecurityConfiguration.java @Configuration public class SecurityConfiguration

    extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { http.requiresChannel() .requestMatchers(r -> r.getHeader("X-Forwarded-Proto") != null) .requiresSecure(); } } https://developer.okta.com/blog/2018/07/30/10-ways-to-secure-spring-boot
  39. Demo Using JHipster, create: A gateway A store microservices app

    A blog microservices app Generate entities in apps and on gateway Convert gateway to be a PWA Run everything in Docker https://github.com/oktadeveloper/java- microservices-examples
  40. JHipster 6.2.0 Lighthouse Report

  41. Part 3 Deploy to the Cloud Options for Deploying JHipster

    Heroku Cloud Foundry AWS Google Cloud Microsoft Azure
  42. For monoliths: jhipster heroku For microservices: Deploy JHipster Registry Build

    and deploy microservice Build and deploy gateway http://bit.ly/heroku-jhipster-microservices
  43. For monoliths: jhipster cloudfoundry For microservices: Deploy JHipster Registry Build

    and deploy microservice Build and deploy gateway https://www.jhipster.tech/cloudfoundry/
  44. Using Elastic Container Service jhipster aws-containers Using Elastic Beanstalk jhipster

    aws Boxfuse boxfuse run -env=prod http://www.jhipster.tech/aws http://www.jhipster.tech/boxfuse
  45. mvn package -Pprod jib:dockerBuild jhipster kubernetes ./kubectl-apply.sh kubectl get svc

    gateway https://developer.okta.com/blog/2017/06/20/ develop-microservices-with-jhipster
  46. Part 4 Developing Mobile Apps with JHipster What is Ionic?

    Why? Ionic Module for JHipster JWT and OIDC Support Entity Generator
  47. Ionic Ionic Framework Develop Hybrid & PWA Apps https://ionicframework.com Stencil

    Vanilla Web Components https://stenciljs.com PWA Toolkit Lightning fast PWAs https://github.com/ionic- team/ionic-pwa-toolkit
  48. Why? The first version of 21-Points Health I wrote with

    JHipster 2.x was painful to use on a mobile device. Versions 4.x and 5.x are better, but still not great. I want to develop the best user experience. Native apps are painful to distribute, but work better than PWAs (on iOS).
  49. How is a mobile app for JHipster different from its

    Angular UI?
  50. Run it! yo jhipster-ionic Ionic Module for JHipster Because Ionic

    Apps need some JHipster too! https://github.com/oktadeveloper/generator-jhipster-ionic Install Ionic and the Ionic Module for JHipster, using npm: npm install -g ionic generator-jhipster-ionic Profit!
  51. Use Ionic for JHipster to Create Mobile Apps https://developer.okta.com/blog/2019/06/24/ionic-4-angular-spring-boot-jhipster

  52. Create an app: ignite new myapp -b ignite-jhipster Ignite JHipster

    https://github.com/ruddell/ignite-jhipster Install Ignite CLI and Ignite JHipster, using npm: npm i -g ignite-cli ignite-jhipster Ignite! A React Native boilerplate for JHipster apps
  53. Build a Mobile App with React Native https://developer.okta.com/blog/2018/10/10/react-native-spring-boot-mobile-app

  54. Demo Create an Ionic 4 app for JHipster Generate entities

    that exist on gateway Deploy to emulator Deploy to phone https://github.com/oktadeveloper/ okta-ionic4-jhipster-example
  55. Part 5 JHipster Roadmap What You Learned What’s Next for

  56. What You Learned

  57. Microservices with Spring Cloud Config and JHipster https://developer.okta.com/blog/2019/05/23/java-microservices-spring-cloud-config

  58. JHipster Mobile Apps and Microservices on Pluralsight pluralsight.com/courses/play-by-play-developing-microservices-mobile-apps-jhipster

  59. What’s Next for JHipster? Full Reactive with WebFlux and Spring

    Cloud Gateway Spring Boot 2.2 GraphQL and Micro Frontends
  60. The JHipster Mini-Book
 Written with Asciidoctor Free download from InfoQ:

    infoq.com/minibooks/jhipster-mini-book Quick and to the point, 164 pages Developed a real world app: www.21-points.com Buy for $20 or download for FREE
  61. Learn More stackoverflow.com Spring Boot spring.io/guides JHipster www.jhipster.tech Okta APIs

  62. developer.okta.com/blog @oktadev

  63. Reactive Microservices with Spring Cloud Gateway https://developer.okta.com/blog/2019/08/28/reactive-microservices-spring-cloud-gateway

  64. Action: Try JHipster! https://developer.okta.com/blog/2019/04/04/java-11-java-12-jhipster-oidc

  65. git clone https://github.com/oktadeveloper/okta-spring-webflux-react- example.git https://github.com/oktadeveloper/java-microservices-examples Use the Source, Luke!

  66. Thanks! Keep in Touch raibledesigns.com @mraible Presentations speakerdeck.com/mraible Code github.com/oktadeveloper

  67. developer.okta.com