Microservices for the Masses with Spring Boot, JHipster, and OAuth - London Java Community 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 tutorials:

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

Transcript

1. Microservices for the Masses with Spring Boot, JHipster, and OAuth September 2, 2019 Matt Raible | @mraible Photo by Shannon Tremaine on https://unsplash.com/photos/NRz7SfpnqUM
2. Do you use microservices?
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
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
13. Microservices Visionaries
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
19. start.spring.io
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 Yeoman, Webpack, and Maven/Gradle JHipster Goals A sleek, modern, mobile-first front- end with Angular and Bootstrap 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 infoq.com/minibooks/jhipster-mini-book
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. Part 3 Deploy to the Cloud Options for Deploying JHipster Heroku Cloud Foundry AWS Google Cloud Microsoft Azure
41. For monoliths: jhipster heroku For microservices: Deploy JHipster Registry Build and deploy microservice Build and deploy gateway http://bit.ly/heroku-jhipster-microservices
42. For monoliths: jhipster cloudfoundry For microservices: Deploy JHipster Registry Build and deploy microservice Build and deploy gateway http://www.jhipster.tech/cloudfoundry
43. 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
44. 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
45. Part 4 Developing Mobile Apps with JHipster What is Ionic? Why? Ionic Module for JHipster JWT and OIDC Support Entity Generator
46. 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
47. 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).
48. How is a mobile app for JHipster different from its Angular UI?
49. 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!
50. Use Ionic for JHipster to Create Mobile Apps https://developer.okta.com/blog/2019/06/24/ionic-4-angular-spring-boot-jhipster
51. 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
52. Build a Mobile App with React Native https://developer.okta.com/blog/2018/10/10/react-native-spring-boot-mobile-app
53. 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
54. Part 5 JHipster Roadmap What You Learned What’s Next for JHipster
55. What You Learned
56. Microservices with Spring Cloud Config and JHipster https://developer.okta.com/blog/2019/05/23/java-microservices-spring-cloud-config
57. JHipster Mobile Apps and Microservices on Pluralsight pluralsight.com/courses/play-by-play-developing-microservices-mobile-apps-jhipster
58. What’s Next for JHipster? Full Reactive with WebFlux and Spring Cloud Gateway Spring Boot 2.2 GraphQL and Micro Frontends
59. 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
60. Learn More stackoverflow.com Spring Boot spring.io/guides JHipster www.jhipster.tech Okta APIs developer.okta.com
61. developer.okta.com/blog @oktadev
62. Reactive Microservices with Spring Cloud Gateway https://developer.okta.com/blog/2019/08/28/reactive-microservices-spring-cloud-gateway
63. Action: Try JHipster! https://developer.okta.com/blog/2019/04/04/java-11-java-12-jhipster-oidc
64. git clone https://github.com/oktadeveloper/okta-spring-webflux-react- example.git https://github.com/oktadeveloper/java-microservices-examples Use the Source, Luke!
65. Thanks! Keep in Touch raibledesigns.com @mraible Presentations speakerdeck.com/mraible Code github.com/oktadeveloper developer.okta.com
66. developer.okta.com