JCConf 2018, SpringCloud to Mircoservice

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The document discusses a conference on Spring Cloud and microservices in Taiwan in 2018. It provides requirements around Spring Framework and Docker knowledge. It then covers various Spring Cloud topics like service discovery with Eureka, declarative REST clients with Feign, API routing with Spring Cloud Gateway, and centralized configuration with Spring Cloud Config Server. It also provides a link to a demo application and instructions for building and running it locally using Docker Compose.

Software

#JCConfTaiwan 2018
Requirements
Some knowledge of
Spring Framework
preferably Spring Boot
Some basic
knowledge of docker
run, trace logs of container, etc..

#JCConfTaiwan 2018
Service Discovery
Eureka

#JCConfTaiwan 2018
URL 跟 IP 的問題解了
接下來就是開始寫程式了?

#JCConfTaiwan 2018
Declarative REST Client
Feign

#JCConfTaiwan 2018
@FeignClient("service")
public interface SampleStub {
@RequestMapping(value = "/sample/echoip", method = RequestMethod.GET)
ResponseEntity<String> echoip();
}
@Autowired
private SampleStub sampleStub;
public void run() {
sampleStub.echoip();
}
Create
Use

#JCConfTaiwan 2018
Composite Service 寫好了
API就直接開出去給人家用了?

#JCConfTaiwan 2018
Api Router
Spring Cloud Gateway

#JCConfTaiwan 2018
Route Sample
@Bean
public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {
return builder.routes()
.route(r -> r
.path("/service/**")
.filters(gatewayFilterSpec -> gatewayFilterSpec.rewritePath(
"/service/(?<segment>.*)", "/${segment}"))
.uri("lb://service")
)
.route(r -> r
.path("/common/**")
.uri("lb://feign")
)
.route(r -> r
.path("/direct/service/**")
.filters(gatewayFilterSpec -> gatewayFilterSpec.rewritePath(
"/direct/service/(?<segment>.*)", "/${segment}"))
.uri("http://service")
)
.build();
}

#JCConfTaiwan 2018
Flow
ConfigServer 啟動 Eureka 啟動 CompositeService
BaseService 啟動
並嘗試向 Eureka 註冊 ServiceName

#JCConfTaiwan 2018
http://bit.ly/jcconf2018-spring-cloud

#JCConfTaiwan 2018
Prerequisites
請從 Docker Store 選擇適合的版本下載安裝
or
Docker Compose
如果你是安裝 Docker for Windows 或是
Docker for Mac 則已經內涵 Compose
Linux 請參考 Install Compose on Linux systems
Docker

#JCConfTaiwan 2018
Build
將此 repository clone 到本機後
本篇的所有指令都是在 repository 的根目錄執行

JCConf 2018, SpringCloud to Mircoservice

1. #JCConfTaiwan 2018 Taiwan 2018 #JCConf

2. #JCConfTaiwan 2018 Requirements Some knowledge of Spring Framework preferably Spring Boot Some basic knowledge of docker run, trace logs of container, etc..

3. #JCConfTaiwan 2018 Service

4. #JCConfTaiwan 2018 傳統的 WebApp

5. #JCConfTaiwan 2018 Microservices

6. #JCConfTaiwan 2018 Service之間的互相呼叫該怎麼辦?

7. #JCConfTaiwan 2018 Service Discovery Eureka

8. #JCConfTaiwan 2018 Eureka

9. #JCConfTaiwan 2018 URL 跟 IP 的問題解了接下來就是開始寫程式了?

10. #JCConfTaiwan 2018 Declarative REST Client Feign

11. #JCConfTaiwan 2018 Feign

12. #JCConfTaiwan 2018 @FeignClient("service") public interface SampleStub { @RequestMapping(value = "/sample/echoip", method = RequestMethod.GET) ResponseEntity<String> echoip(); } @Autowired private SampleStub sampleStub; public void run() { sampleStub.echoip(); } Create Use

13. #JCConfTaiwan 2018 How it works

14. #JCConfTaiwan 2018 Composite Service 寫好了 API就直接開出去給人家用了?

15. #JCConfTaiwan 2018 Api Router Spring Cloud Gateway

16. #JCConfTaiwan 2018 Gateway

17. #JCConfTaiwan 2018 Route Sample @Bean public RouteLocator customRouteLocator(RouteLocatorBuilder builder) { return builder.routes() .route(r -> r .path("/service/**") .filters(gatewayFilterSpec -> gatewayFilterSpec.rewritePath( "/service/(?<segment>.*)", "/${segment}")) .uri("lb://service") ) .route(r -> r .path("/common/**") .uri("lb://feign") ) .route(r -> r .path("/direct/service/**") .filters(gatewayFilterSpec -> gatewayFilterSpec.rewritePath( "/direct/service/(?<segment>.*)", "/${segment}")) .uri("http://service") ) .build(); }

18. #JCConfTaiwan 2018 Config Server

19. #JCConfTaiwan 2018 Config Server

20. #JCConfTaiwan 2018 Overview

21. #JCConfTaiwan 2018

22. #JCConfTaiwan 2018 Flow ConfigServer 啟動 Eureka 啟動 CompositeService BaseService 啟動並嘗試向 Eureka 註冊 ServiceName

23. #JCConfTaiwan 2018 Docker DNS vs Eureka

24. #JCConfTaiwan 2018

25. #JCConfTaiwan 2018

26. #JCConfTaiwan 2018 Demo

27. #JCConfTaiwan 2018 http://bit.ly/jcconf2018-spring-cloud

28. #JCConfTaiwan 2018 Prerequisites 請從 Docker Store 選擇適合的版本下載安裝 or Docker Compose 如果你是安裝 Docker for Windows 或是 Docker for Mac 則已經內涵 Compose Linux 請參考 Install Compose on Linux systems Docker

29. #JCConfTaiwan 2018 Build 將此 repository clone 到本機後本篇的所有指令都是在 repository 的根目錄執行

30. #JCConfTaiwan 2018 Q&A

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JCConf 2018, SpringCloud to Mircoservice

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