The Spring Update

1. The Spring Update Roy Clarkson | Glenn Renfro | Gunnar Hillert

2. Spring 2

3. Spring Data 3 Core Jpa Gemfire REST KeyValue MongoDB Redis Solr Foundational Store Modules Web Apis Core Modules Community Modules ElasticSearch Cassandra Couchbase Neo4j

4. Spring Social 4

5. Spring 4.2 • @AliasFor • Hibernate5 Support • JMS Improvements • Support for Money, Currency and TimeZone (Formatter / ConversionService) 5

6. • Used to declare aliases between attributes within an annotation • e.g., locations and value in @ContextConﬁguration, or path and value in @RequestMapping • Used in composed annotations @AliasFor 6 https://github.com/sbrannen/spring-composed

7. Spring 4.2 Testing • Support for HtmlUnit incl. Selenium Webdriver integration • @Commit instead @Rollback(false) • ContextCache is public Api • @Sql 7 @Test @Sql(statements = "DROP TABLE user IF EXISTS") @Sql(scripts = “/test-schema.sql", statements = "INSERT INTO user VALUES ('Dilbert')")

8. JUnit Rules • SpringClassRule & SpringMethodRule • Can be used with any JUnit runner  8 @RunWith(Parameterized.class) @ContextConfiguration public class ParameterizedSpringRuleTests {   @ClassRule public static final SpringClassRule SPRING_CLASS_RULE = new SpringClassRule(); @Rule public final SpringMethodRule springMethodRule = new SpringMethodRule();

9. Embedded DBs • Unique Names for Embedded Databases • Why? Recreating an embedded database within the same JVM doesn’t actually create anything: a second attempt simply connects to the existing one. 9 @Bean public DataSource dataSource() { return new EmbeddedDatabaseBuilder() .generateUniqueName(true) .addScript("schema.sql") .addScript("user_data.sql") .build(); }

10. Spring Web • SimpUserRegistry • CompletableFuture (Java 8) • OkHTTP Integration with RestTemplate • ScriptTemplateView • JavaScript view templating, Nashorn (JDK 8) 10

11. HTTP Caching • CacheControl builder • A builder for creating "Cache-Control" HTTP response headers. 11 @Configuration @EnableWebMvc public class WebConfig extends WebMvcConfigurerAdapter { @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/resources/**") .addResourceLocations("/public-resources/") .setCacheControl(CacheControl.maxAge(1,TimeUnit.HOURS) .cachePublic()); } }

12. HTTP Caching 12 @RequestMapping("/book/{id}") public ResponseEntity<Book> showBook(@PathVariable Long id) { Book book = findBook(id); String version = book.getVersion(); return ResponseEntity .ok() .cacheControl(CacheControl.maxAge(30, TimeUnit.DAYS)) .eTag(version) // lastModified is also available .body(book); } • Usage in Controllers

13. Spring Web • Cross-origin resource sharing (CORS) 13 @CrossOrigin(maxAge = 3600) @RestController @RequestMapping("/account") public class AccountController { @CrossOrigin(origins = "http://domain2.com") @RequestMapping("/{id}") public Account retrieve(@PathVariable Long id) { … } @RequestMapping(method = RequestMethod.DELETE, value = "/{id}") public void remove(@PathVariable Long id) { … } }

14. Async • Spring 3.2 Async Request Handling • Spring 4.0 WebSocket Messaging (SockJS + Stomp) • Spring 4.2 HttpStreaming • Spring 4.2 Server-Sent Events (SSE) • Spring 4.2 Direct Streaming 14

15. Server-Sent Events 15 @RequestMapping("/metrics") public SseEmitter subscribeMetrics() { SseEmitter emitter = new SseEmitter(); // Save emitter for further usage return emitter; }

16. Spring 4.3 • Reﬁnements • A richer set of convenience annotations (pre- composed) 16

17. Spring 5 • Q4 2016 • Comprehensive JDK 9 support • Java 8 baseline • Servlet 3.0+ • HTTP/2 • Reactive support 17 https://github.com/spring- projects/spring-reactive

18. Spring Boot 1.3 18 Pathway to #NoXML

19. 0 450000 900000 1350000 1800000 July 14 Sep 14 Nov 14 Jan 15 Mar 15 May 15 Jul 15 Spring Boot Adoption 19

20. • https://spring.io/blog/2013/03/04/spring-at-china-scale-alibaba- group-alipay-taobao-and-tmall/ 20 “AliExpress is the beginning of a new effort to re- architect Taobao.com and Alipay.com for microservices and cloud native, built on Spring Boot and Spring Cloud.” - Leijuan, Principal Engineer, AliExpress

21. 21

22. Boot 1.3 • Spring 4.2 and Spring Security 4.0 • OAuth2 Support • Colorful Ascii Art Banners 22

23. Boot 1.3 • Fully executable JARs and service support • Start as Unix/Linux services • init.d • systemd 23 $ ./myapp.jar

24. Boot 1.3 • Additional Health Indicators • Actuator Metrics (Java 8) • New actuator endpoints - e.g. /logﬁle • Hypermedia for MVC actuator endpoints • Actuator docs endpoint 24

25. Boot 1.3 • Spring Session Autoconﬁguration • Persistent sessions (Opt-in) • Ant Support • Support for @WebServlet, @WebFilter, and @WebListener • When using an embedded servlet container, automatic registration of @WebServlet, @WebFilter, and @WebListener annotated classes can now be enabled using @ServletComponentScan. 25

26. Logging • Logback • Spring Profile specific Configuration • Use Environment Properties in Logback’ • logback-spring.xml • Log4J 1.x deprecated 26 https://blogs.apache.org/foundation/entry/ apache_logging_services_project_announces

27. Boot Developer Tools • Property Defaults • Automatic application restarts • Remote development support 27 http://docs.spring.io/spring-boot/docs/current-SNAPSHOT/ reference/htmlsingle/#using-boot-devtools

28. Boot Developer Tools • LiveReload support • Install LiveReload browser plugin • Bowser Refresh Button 28 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> </dependency>

29. Caching • @EnableCaching • Auto-conﬁguration now for: 29 JSR 107Guava

30. Boot and SPAs • Web jars - /webjars/** • /static, /public, /resources, /META-INF/resources • Creating modular jars 30

31. Demo 31 https://github.com/ghillert/botanic-ng

32. Migrating to 1.3 • https://github.com/spring-projects/spring-boot/ wiki/Spring-Boot-1.3-Release-Notes • Several properties changed • Dependency updates 32

33. JSPs and Web.xml • JSP limitations for über-Jars • Servlet 3.0 to the rescue • /META-INF/resources/WEB-INF/jsp • Possible to Eliminate Web.xml • TomcatEmbeddedServletContainerFactory 33

34. 34

35. Demo 35 https://github.com/devnexus/devnexus-site JSPs with

36. Spring Initializr • http://start.spring.io 36

37. Tooling - STS • Spring Boot YML properties editor • with code completion • Improved support for Cloud Foundry • Support for Spring Boot DevTools • Attach Java debugger to CF deployed apps • Spring Boot Dashboard 37

38. • Service Discovery • Circuit Breaker • Client Side Load Balancer • Router and Filter • Spring Cloud Stream + Data Flow • Distributed tracing 38 Spring Cloud

39. 39 Eureka Hystrix Spring Cloud Consul

40. 12 factor app principles 40 Codebase Depen- dencies Conﬁg Backing Services Build Release Run Processes Port Binding Concurrency Disposa- bility Dev/Prod Parity Logs Admin Processes http://12factor.net

41. Demo 41 https://github.com/springone2gx2015/vehicle-ﬂeet-demo

42. Demo 42

43. Spring & Cloud Native 43 Core Boot Connectors Service Registry Conﬁg Server Circuit Breaker OpsDev

44. 44 #fundJUnit • Pivotal sponsoring JUnit • Developer Sponsor • 6 weeks of senior developer • Campaign Sponsor • €5000 donation

45. Books 45 http://pivotal.io/ platform/migrating-to- cloud-native- application- architectures-ebook

46. Books 46

47. Books 47

48. 48

49. • Full-Day Workshop • Several Spring Speakers 49 Delivering Cloud Native Applications with Spring and Cloud Foundry

50. Questions? 50

51. Thank You! 51 Credits: Justin Blake, nathanbui, Bohdan Burmich, David Waschbüsch, Gabriele Malaspina, Creative Stall, Aha-Soft https://github.com/ghillert/ ajug-spring-update @ghillert @royclarkson@cppwfs @springcentral

The Spring Update

The Spring Update

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The Spring Update