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Reactive Java Microservices with Spring Boot and JHipster - Denver JUG 2021
The document provides an overview of creating reactive Java microservices using Spring Boot and JHipster, including installation and setup instructions. It discusses the evolution of the Spring framework and highlights the importance of Conways's law in system design. Additionally, it offers code examples, resources for further learning, and suggests trying JHipster 7 for developing microservices.
Reactive Java Microservices with Spring Boot and JHipster - Denver JUG 2021
- 1. Reactive Java Microservices withSpring Boot and JHipster June 9, 2021 Matt Raible | @mraible Photo by Trish McGinity https://www.mcginityphoto.com/Portfolio/TravelandLeisure/Colorado-1/i-cHgKpSr/A
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- 4. How to UseJHipster Install JHipster using npm: npm install -g generator-jhipster Create a directory and cd into it: take app Run it! jhipster
- 5. Monolith, Gateway, orMicroservices? Spring MVC or Spring WebFlux? Authentication Type? Database Type? Build Tool? Web Framework? JHipster Options
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- 8. Thriving OSS Project Startedby Julien Dubois on October 21, 2013 App Generator, Platform, Learning Tool …
- 9. @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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- 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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- 16. “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
- 18. “Do one thingand do it well.”
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- 22. 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); }
- 23. 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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- 25. 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 2.0 and OIDC
- 27. Demo Create microservices withJDL Run apps and e2e tests Switch identity providers Run everything with Docker https://github.com/oktadev/java- microservices-examples 🤓
- 28. Reactive Microservices withSpring Cloud Gateway https://developer.okta.com/blog/2019/08/28/reactive-microservices-spring-cloud-gateway
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- 32. npm install -ggenerator-jhipster-kotlin
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- 34. What’s Next forJHipster? Micro Frontends Spring Boot 2.5 GraphQL * These are my personal interests.
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- 36. The JHipster Mini-Book Writtenwith 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
- 37. Learn More stackoverflow.com Spring Boot spring.io/guides JHipster www.jhipster.tech OktaAPIs developer.okta.com
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- 39. Action: Try JHipster7! 🚀 npm i -g generator-jhipster@7
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