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Microservices for the Masses with Spring Boot, ...

Matt Raible
September 02, 2019

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

Matt Raible

September 02, 2019
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  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. 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
  3. Agenda 1. Introduction to Microservices 2. Microservices with JHipster 3.

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

    Philosophy Why Microservices? Demo: A Microservices Architecture with Spring Boot and Spring Cloud
  5. “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
  6. “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
  7. 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
  8. Microservices with JHipster What is JHipster? Installing and Using JHipster

    JHipster’s Microservice Features Progressive Web Applications Overview Part 2
  9. JHipster jhipster.tech JHipster is a development platform to generate, develop

    and deploy Spring Boot + Angular/React Web applications and Spring microservices. and Vue! ✨
  10. 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
  11. 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
  12. 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
  13. Progressive Web Apps Originate from a secure origin, load while

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

    look and act like a native application, but are distributed through the web.
  15. 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
  16. 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
  17. 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
  18. Part 3 Deploy to the Cloud Options for Deploying JHipster

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

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

    and deploy microservice Build and deploy gateway http://www.jhipster.tech/cloudfoundry
  21. 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
  22. 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
  23. Part 4 Developing Mobile Apps with JHipster What is Ionic?

    Why? Ionic Module for JHipster JWT and OIDC Support Entity Generator
  24. 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
  25. 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).
  26. 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!
  27. 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
  28. 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
  29. What’s Next for JHipster? Full Reactive with WebFlux and Spring

    Cloud Gateway Spring Boot 2.2 GraphQL and Micro Frontends
  30. 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