SpringOne Platform 2016 Speakers: Craig Walls; Spring Social Lead, Pivotal. Roy Clarkson; Spring Mobile Lead, Pivotal. Developing cloud native applications presents several challenges. How do microservices discover each other? How do you configure them? How can you make them resilient to failure? How can you monitor the health of each microservice? Spring Cloud addresses all of these concerns. Even so, you still must explicitly develop your own discovery server, configuration server, and circuit breaker dashboard for monitoring the circuit breakers in each microservice. Spring Cloud Services for Pivotal Cloud Foundry picks up where Spring Cloud leaves off, offering a discovery server, configuration server, and Hystrix dashboard as services that can be bound to applications deployed in Pivotal Cloud Foundry, leaving you to focus on developing the services that drive your application. In this talk, we will introduce the capabilities provided by Spring Cloud Services and demonstrate how it makes simple work of deploying cloud native applications to Cloud Foundry.

1. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
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Cloud Native Java
with Spring Cloud Services
Roy Clarkson Craig Walls
@royclarkson @habuma

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+
2
= ?

3. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
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4. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/ 4

5. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Spring Cloud Demo
5

6. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
I know Kung Fu
• Eureka Server (Spring Cloud Netflix)
• Config Server (Spring Cloud Config)
• Hystrix Dashboard (Spring Cloud
Netflix)
• App Service
• App UI
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Config Server Service Registry Circuit Breaker
Dashboard
ease of use
security
reliability

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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Create a Spring Cloud server
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1. cf create-service
1. create a Spring Boot app
2. add Spring Cloud starters
3. add @EnableXxxxServer
4. add configuration
5. add security
6. deploy and manage

9. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Create a Spring Cloud client application
9
1. create a Spring Boot app
2. add Spring Cloud Services
starters
3. cf bind-service
1. create a Spring Boot app
2. add Spring Cloud starters
3. add configuration
• Eureka-first or config-first
bootstrapping?
4. add security

10. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
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Secure access
10
Services are secured with OAuth2
OAuth2 credentials are exposed via service bindings
Spring Cloud Services
App
Identity Server

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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Reliability
11
High availability and health management
are provided by the platform

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Service Brokers
12
Service brokers extend Cloud
Foundry to provide resources that
can be consumed by applications
http://docs.cloudfoundry.org/services/
Cloud
Foundry
Service
Broker
provision instance
get catalog
delete binding
delete instance
create binding

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14. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Spring Cloud Services Broker
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Cloud
Foundry
Broker
App
provision instance
get catalog
create binding
delete binding
delete instance
Worker
App
RabbitMQ
create, delete, configure app and service instances

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SCS is built on Spring Projects
Spring Boot
Spring Cloud Netflix
Spring Cloud Config Server
Spring Cloud Connectors
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Spring Security
Spring Security OAuth2
Spring Data JPA
Spring AMQP
Spring Boot CF Service Broker
Cloud Foundry Java Client

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Config Server
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17. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Overview
Service
• deploys a Spring Cloud Config server for each service instance provisioned
• git backend
• search paths within config repo
• basic authentication to repo
Security
• only bound applications are able to see configuration
Client Applications
• starter automatically adds a property source configured for the config server
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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Configuration Server flow
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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Dependencies
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<dependency>
<groupId>io.pivotal.spring.cloud</groupId>
<artifactId>spring-cloud-services-starter-config-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-client</artifactId>
</dependency>
Spring Cloud:
Spring Cloud Services:

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Service Registry
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21. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Overview
Service
• deploys a Spring Cloud Netflix Eureka server for each service instance provisioned
Security
• only the application that originally creates a registration is allowed to update or
remove that registration
• prevents Man In The Middle attacks against the Registry
Client Applications
• starter automatically configures a DiscoveryClient
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22. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Service Registry Flow
22
FortuneTellerService

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Service Registry Flow
22
Where can I find
FortuneTellerService?

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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Service Registry Flow
22
<application>
<name>FortuneTellerService</name>
<instance>
<hostName>chip</hostName>
<ipAddr>fortune-service.blue.springapps.io</ipAddr>
…
<application>

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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Service Registry Flow
22
Give me a
random fortune
GET http://fortune-service.blue.springapps.io/random

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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Dependencies
23
<dependency>
<groupId>io.pivotal.spring.cloud</groupId>
<artifactId>spring-cloud-services-starter-service-registry</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
Spring Cloud:
Spring Cloud Services:
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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Circuit Breaker Dashboard
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Overview
Service
• deploys for each service instance provisioned:
• Spring Cloud Netflix Hystrix dashboard
• Spring Cloud Netflix Turbine server
• Pivotal RabbitMQ service instance
Client Applications
• starter automatically configures a Turbine AMQP client
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29. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Circuit Breaker Dashboard Flow
26

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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Dependencies
27
<dependency>
<groupId>io.pivotal.spring.cloud</groupId>
<artifactId>spring-cloud-services-starter-circuit-breaker</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>
Spring Cloud:
Spring Cloud Services:
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@Configuration
public class CloudConfig extends CloudConnectorsConfig {
@Bean
@HystrixConnectionFactory
public ConnectionFactory hystrixConnectionFactory() {
return connectionFactory().hystrixConnectionFactory();
}
}
@Configuration
public class RabbitConfig extends AbstractCloudConfig {
@Bean
@Primary
public ConnectionFactory rabbitConnectionFactory() {
return connectionFactory().rabbitConnectionFactory();
}
}

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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Spring Cloud Services Dependencies
<dependencyManagement>
<dependencies>
<dependency>
<groupId>io.pivotal.spring.cloud</groupId>
<artifactId>spring-cloud-services-dependencies</artifactId>
<version>1.1.1.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Brixton.SR3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Spring Cloud Services Dependencies
29
<dependencies>
<dependency>
<groupId>io.pivotal.spring.cloud</groupId>
<artifactId>spring-cloud-services-starter-config-client</artifactId>
</dependency>
<dependency>
<groupId>io.pivotal.spring.cloud</groupId>
<artifactId>spring-cloud-services-starter-service-registry</artifactId>
</dependency>
<dependency>
<groupId>io.pivotal.spring.cloud</groupId>
<artifactId>spring-cloud-services-starter-circuit-breaker</artifactId>
</dependency>
</dependencies>

34. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Enabling Spring Cloud
@SpringBootApplication
@EnableJpaRepositories
@EnableDiscoveryClient
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
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35. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Enabling Spring Cloud
30
@SpringBootApplication
@EnableDiscoveryClient
@EnableCircuitBreaker
public class Application {
@Bean
@LoadBalanced
public RestTemplate restTemplate() {
return new RestTemplate();
}
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}

36. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Configuring Spring Cloud
spring:
application:
name: fortunes
31
spring:
application:
name: ui

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Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
What’s new in SCS 1.1
• Spring Cloud Brixton Release Train and Spring Boot 1.3 Support
• Asynchronous Service Provisioning and Zero Downtime Upgrades/Updates
• Highly-Available Topologies for Config Server and Service Registry
• Enhancements to the Config Server Git Backend
37
https://blog.pivotal.io/pivotal-cloud-foundry/products/spring-
cloud-services-1-1-now-available

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Spring Cloud Brixton and Spring Boot 1.3
// define a Ribbon enabled RestTemplate
@Bean
@LoadBalanced
public RestTemplate restTemplate() {
return new RestTemplate();
}
38
// inject the instance into your controller
@Autowired
RestTemplate rest;

39. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Zero Downtime Upgrades & Updates
• Upgrades to the SCS tile via Pivotal Cloud Foundry® Operations Manager
• Upgrades to SCS service instances
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41. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Highly Available Topologies
• Config Servers are scaled horizontally via
the Cloud Foundry API.
• Service Registries are stateful components
that replicate when clustered. The SCS
service broker pushes the correct number
of Eureka application instances and
configures them for replication.
• Changes to HA configurations are
executed such that no application
instances experience downtime.
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42. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
Creative Commons Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
Config Server Enhancements
• Config Server now supports all features of the Spring Cloud Brixton Git backend,
including multiple repositories, pattern matching, and placeholders.
• Git repositories can now be accessed:
• using self-signed SSL certificates for HTTPS
• via an HTTP or HTTPS proxy server
• via the Git or SSH protocols (in addition to HTTP/HTTPS).
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43. Unless otherwise indicated, these slides are © 2013-2016 Pivotal Software, Inc. and licensed under a
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Spring Cloud Services Demo
43

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