Micro Frontends for Java Microservices - Cork JUG 2022
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You've figured out how to split up your backend services into microservices and scale your teams to the moon, right? But what about the frontend? Are you still building monoliths for your UI? If so, you might want to check out micro frontends—basically extensions to the microservices pattern, where the concept is extended to the frontend. Find out how to package and deploy your microservices and their UIs in the same artifact, as well as make it possible to test and develop them independently. In this live session, Matt will show you how to build a microservices and micro frontends architecture using Angular, Spring Boot, and Spring Cloud. Related blog post: https://auth0.com/blog/micro-frontends-for-java-microservices GitHub repo: https://github.com/oktadev/auth0-micro-frontends-jhipster-example
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Micro Frontends for Java Microservices - Cork JUG 2022
- 1. Micro Frontends for Java microservices September 27, 2022 Matt Raible | @mraible Photo by Jason Murphy https://unsplash.com/photos/dk9rD8bgqOQ
- 2. @mraible Hi, I’m Matt Raible Father, Husband, Skier, Mountain Biker, Whitewater Rafter Bus Lover Web Developer and Java Champion Okta Developer Advocate Blogger on raibledesigns.com and developer.okta.com/blog @mraible
- 8. Agenda A brief history of microservices Microservices with Java Microservices with JHipster Introduction to Micro Frontends Live Demo Securing microservices with OAuth 2.1 Action!
- 10. “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
- 12. “Do one thing and do it well.”
- 14. Spring History of Spring October 2002 - Rod Johnson writes J2EE Design & Development 2004 - Spring 1.0 2006 - Spring 2.0 with better XML 2009 - JavaConfig 2014 - Spring Boot 1.0 2015 - Spring Cloud 1.0 🍃
- 17. Spring WebFlux!
- 18. Spring MVC Code @PostMapping("/points") public ResponseEntity<Points> createPoints(@Valid @RequestBody Points points) throws URISyntaxException { log.debug("REST request to save Points : {}", points); if (points.getId() != null) { throw new BadRequestAlertException("A new points cannot already have an ID", ENTITY_NAME, "idexists"); } Points result = pointsRepository.save(points); pointsSearchRepository.save(result); return ResponseEntity .created(new URI("/api/points/" + result.getId())) .headers(HeaderUtil.createEntityCreationAlert( applicationName, true, ENTITY_NAME, result.getId().toString())) .body(result); }
- 19. Spring WebFlux Code @PostMapping("/points") public Mono<ResponseEntity<Points>> createPoints(@Valid @RequestBody Points points) throws URISyntaxException { log.debug("REST request to save Points : {}", points); if (points.getId() != null) { throw new BadRequestAlertException("A new points cannot already have an ID", ENTITY_NAME, "idexists"); } return pointsRepository .save(points) .flatMap(pointsSearchRepository::save) .map( result -> { try { return ResponseEntity .created(new URI("/api/points/" + result.getId())) .headers(HeaderUtil.createEntityCreationAlert( applicationName, true, ENTITY_NAME, result.getId().toString())) .body(result); } catch (URISyntaxException e) { throw new RuntimeException(e); } } ); }
- 22. Thriving OSS Project Started by Julien Dubois on October 21, 2013 App Generator, Platform, Learning Tool …
- 23. How to Use JHipster Install JHipster using npm: npm install -g generator-jhipster Create a directory and cd into it: take app Run it! jhipster
- 24. Monolith, Gateway, or Microservices? Spring MVC or Spring WebFlux? Authentication Type? Database Type? Build Tool? Web Framework? JHipster Options
- 29. JHipster Micro Frontends Architecture
- 32. Why should Java developers care?
- 33. Demo Create apps with JDL Run apps and e2e tests Run everything with Docker Switch identity providers @oktadev/auth0-micro-frontends- jhipster-example 🤓
- 34. Secure Microservices with OAuth 2.1 https://oauth.net/2.1
- 35. Improvements in OAuth 2.1 PKCE is required for all clients using the authorization code flow Redirect URIs must be compared using exact string matching The Implicit grant is omitted from this specification The Resource Owner Password Credentials grant is omitted from this specification Bearer token usage omits the use of bearer tokens in the query string of URIs Refresh tokens for public clients must either be sender-constrained or one-time use
- 36. 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 2.1 and OIDC
- 38. Relay an access token in Spring Cloud Gateway spring: cloud: gateway: default-filters: - TokenRelay
- 39. Reactive Microservices with Spring Cloud Gateway https://developer.okta.com/blog/2019/08/28/reactive-microservices-spring-cloud-gateway
- 44. npm install -g generator-jhipster-kotlin
- 47. What You Learned
- 48. What’s Next for JHipster? SCIM Spring Boot 3 GraphQL * These are my personal interests.
- 50. Learn More stackoverflow.com Spring Boot spring.io/guides JHipster www.jhipster.tech Okta APIs developer.okta.com
- 53. Action: Try JHipster! 🚀 npm i -g generator-jhipster@7