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Micro Frontends for Java Microservices - Cork JUG 2022
The document discusses the implementation of micro frontends for Java microservices and includes an overview of microservices and JHipster, along with code examples and a live demo. It highlights the evolution of Spring, security with OAuth 2.1, and provides resources for developers to explore further. The content is geared towards Java developers, emphasizing the benefits of using microservices architecture and JHipster tools.
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Micro Frontends for Java Microservices - Cork JUG 2022
- 1. Micro Frontends for Javamicroservices September 27, 2022 Matt Raible | @mraible Photo by Jason Murphy https://unsplash.com/photos/dk9rD8bgqOQ
- 2. @mraible Hi, I’m MattRaible 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
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- 8. Agenda A brief historyof microservices Microservices with Java Microservices with JHipster Introduction to Micro Frontends Live Demo Securing microservices with OAuth 2.1 Action!
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- 10. “Any organization thatdesigns 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 thingand do it well.”
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- 14. Spring History of Spring October2002 - 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 🍃
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- 18. Spring MVC Code @PostMapping("/points") publicResponseEntity<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") publicMono<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); } } ); }
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- 22. Thriving OSS Project Startedby Julien Dubois on October 21, 2013 App Generator, Platform, Learning Tool …
- 23. How to UseJHipster Install JHipster using npm: npm install -g generator-jhipster Create a directory and cd into it: take app Run it! jhipster
- 24. Monolith, Gateway, orMicroservices? Spring MVC or Spring WebFlux? Authentication Type? Database Type? Build Tool? Web Framework? JHipster Options
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- 29. JHipster Micro FrontendsArchitecture
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- 32. Why should Javadevelopers care?
- 33. Demo Create apps withJDL Run apps and e2e tests Run everything with Docker Switch identity providers @oktadev/auth0-micro-frontends- jhipster-example 🤓
- 34. Secure Microservices withOAuth 2.1 https://oauth.net/2.1
- 35. Improvements in OAuth2.1 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 redirectURI 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
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- 38. Relay an accesstoken in Spring Cloud Gateway spring: cloud: gateway: default-filters: - TokenRelay
- 39. Reactive Microservices withSpring Cloud Gateway https://developer.okta.com/blog/2019/08/28/reactive-microservices-spring-cloud-gateway
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- 44. npm install -ggenerator-jhipster-kotlin
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- 48. What’s Next forJHipster? SCIM Spring Boot 3 GraphQL * These are my personal interests.
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- 50. Learn More stackoverflow.com Spring Boot spring.io/guides JHipster www.jhipster.tech OktaAPIs developer.okta.com
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- 53. Action: Try JHipster!🚀 npm i -g generator-jhipster@7
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