src-spring-cloud-openfeign/README.md

Ths project provides Netflix OSS integrations for Spring Boot apps through autoconfiguration and binding to the Spring Environment and other Spring programming model idioms.

Eureka Clients

Example eureka client:

@Configuration
@ComponentScan
@EnableAutoConfiguration
@RestController
public class Application {

	@RequestMapping("/")
	public String home() {
		return "Hello world";
	}
	
	public static void main(String[] args) {
		new SpringApplicationBuilder(Application.class).web(true).run(args);
	}

}

(i.e. utterly normal Spring Boot app). Configuration is required to locate the Eureka server. Example:

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8080/v2/
      default.defaultZone: http://localhost:8080/v2/

The default application name, virtual host and non-secure port are taken from the Environment is ${spring.application.name}, ${spring.application.name}.mydomain.net and ${server.port} respectively.

TODO List

• Example front end app (currently in sandbox)
• Example back end service (currently in sandbox)
• Use platform config
• Hystrix integration (hystrix-javanica)
• Feign use spring message converters
• Ribbon (static server list)
• Eureka boot app (Service registration)
• Eureka (apache -> tomcat) see https://github.com/cfregly/fluxcapacitor/wiki/NetflixOSS-FAQ#eureka-service-discovery-load-balancer and https://groups.google.com/forum/?fromgroups#!topic/eureka_netflix/g3p2r7gHnN0
• Archaius bridge to spring environment
• Ribbon (Client side load balancing) (Eureka integration)
  • Remove need for *-eureka.properties
  • Use spring boot values as defaults where appropriate
  • Synchronous removal of service from eureka on shutdown
• Refresh log levels dynamically
• Router (Zuul) integrated using hystrix/ribbon/eureka
• Better observable example
• Distributed refresh environment via platform bus
• Metrics aggregation (turbine)
  • Use Eureka for instance discovery rather than static list see https://github.com/Netflix/Turbine/blob/master/turbine-contrib/src/main/java/com/netflix/turbine/discovery/EurekaInstanceDiscovery.java
  • Configure InstanceDiscovery.impl using auto config/config props