Spring Cloud Servicesの紹介 #pcf_tokyo

‹#›© 2016 Pivotal Software, Inc. All rights reserved. ‹#›© 2016 Pivotal Software, Inc. All rights reserved.
Spring Cloud Services
Toshiaki Maki (@making)
PCF Meetup
2016-06-29

© 2016 Pivotal Software, Inc. All rights reserved.
Who am I ?
• Toshiaki Maki (@making)
• Sr. Solutions Architect
• Spring Framework enthusiast
Perfect
Java EE
(Coming Soon)
bit.ly/spring-book

‹#›© 2016 Pivotal Software, Inc. All rights reserved.
Spring Cloud

Spring Cloud
• Omakase Microservices

• Service Discovery
• API Gateway
• Client-side Load Balancing
• Circuit Breakers
• Distributed Configuration
• Distributed Tracing
Spring Cloud Provides
Hystrix
Ribbon
Zuul
Eureka
Zipkin

• Service Registry 
Registry  
•  
" (host )"  
" " ( )
• Registry  
• Service Discovery
• Eureka (Netflix)
• Consul (HashiCorp)
• Zookeeper
Service Discovery

• Service Registry  
 
 
• Netflix Ribbon
Client-side Load Balancing

•  
 
( )
•  
(Open)  
 
(Half-Open)  
(Closed)
• Netflix Hystrix
•
Circuit Breaker

•  
REST API  
•  
• Git/Subversion/ 
Distributed Configuration

• Spring Boot
• Spring Cloud
• @EnableXxxServer
•

Implement Config Server

Add dependency
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>

Create Config Server
@SpringBootApplication
@EnableConfigServer
public class ConfigServerApplication {
public static void main(String[] args) {
SpringApplication.run(ConfigServerApplication.class, args);
}
}
👈

Configure Config Server
spring.cloud.config.server.git.uri=https://github.com/
making/metflix-config.git

Configure Config Client

Add dependency
<dependency>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>

Configure Config Client
spring.cloud.config.uri=http://localhost:8888
spring.application.name=membership

Implement Service Registry

Add dependency
<dependency>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>

Create Eureka Server
@EnableEurekaServer
public class EurekaServerApplication {
SpringApplication.run(EurekaServerApplication.class,
args);
}
}
👈

Configure Discovery Clients

Add dependency
<dependency>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>

Create Eureka Client
@EnableDiscoveryClient
public class RecommendationsApplication {
SpringApplication.run(RecommendationsApplication.class,
args);
}
}
👈

Introduce Circuit Breaker

Add dependency
<dependency>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>

Use Hystrix
@EnableDiscoveryClient
@EnableCircuitBreaker
public class RecommendationsApplication {
SpringApplication.run(RecommendationsApplication.class,
args);
}
}
👈

Configure Hystrix Command
@Component
public class RecommendationsService {
@HystrixCommand(fallbackMethod =
"recommendationFallback")
List<Movie> findRecommendationsForUser(String user) {
// some recommendation logic
}
List<Movie> recommendationFallback(String user) {
return top5Movies;
}
}
👈

Configure Hystrix Command
@Component
public class RecommendationsService {
@HystrixCommand(fallbackMethod =
"recommendationFallback")
List<Movie> findRecommendationsForUser(String user) {
// some recommendation logic
}
List<Movie> recommendationFallback(String user) {
return top5Movies;
}
}
👈
👈

Implement Circuit Breaker Dashboard

Add dependency
<dependency>
<artifactId>spring-cloud-starter-hystrix-dashboard</artifactId>
</dependency>

Create Dashboard Server
@EnableHystrixDashboard
public class HystrixDashboardApplication {
SpringApplication.run(HystrixDashboardApplication.class,
args);
}
}
👈

Hystrix Dashboard
• 1 (=1 )
• Turbine
• Server-Sent Event pull PaaS
1URL

"Spring Cloud as a Service"

• Spring Boot
• Spring Cloud
•
•
•

• Spring Boot
• Spring Cloud
•
•
•
• cf create-service

• Spring Boot
• Spring Cloud
•
•

• Spring Boot
• Spring Cloud
•
•
• Spring Boot
• Spring Cloud Services
•
• cf bind-service

🔒 🔒 🔒

🔒 🔒 🔒
OAuth2

Create services
cf create-service p-config-server standard config-server
-c '{"git":{"uri":"https://github.com/making/metflix-config"}}'
cf create-service p-service-registry standard eureka-server
cf create-service p-circuit-breaker-dashboard standard
hystrix-dashboard

Bind Services
cf bind-service membership config-server
cf bind-service recommendations config-server
cf bind-service ui config-server
cf bind-service membership eureka-server
cf bind-service recommendations eureka-server
cf bind-service ui eureka-server
cf bind-service recommendations hystrix-dashboard
cf bind-service ui hystrix-dashboard

RabbitMQ push
!!

• Spring Cloud r
• Spring Cloud Service = "Spring Cloud" as a service
• @EnableXxxServer --> cf create-service + OAuth2

Links
• http://www.slideshare.net/SpringCentral/cloud-native-java-
with-spring-cloud-services
• https://github.com/Pivotal-Japan/cloud-native-workshop

Spring Cloud Servicesの紹介 #pcf_tokyo

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