Я пытаюсь выполнить весеннюю загрузку (2.0.5) с использованием Spring-Cloud (Finchley.SR1) и пытаюсь настроить связь между двумя службами, используя Eureka в качестве сервера обнаружения и Feign / Ribbon в качестве клиентов.Настройка довольно проста (хотя немного запятнана различными вещами и другими ответами, которые я пробовал):
application Eureka.yml
spring:
application:
name: eureka-service
server:
port: 8761
eureka:
instance:
hostname: localhost
preferIpAddress: true
client:
registerWithEureka: false
fetchRegistry: false
serviceUrl:
defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka
секундаbootstrap.yml службы
spring:
application:
name: secondservice
eureka:
instance:
hostname: ${spring.application.name}
preferIpAddress: true
instanceId: ${spring.application.name}:${spring.application.instance_id:${random.value}}
statusPageUrlPath: ${server.servlet.context-path}/actuator/info
healthCheckUrlPath: ${server.servlet.context-path}/actuator/health
leaseRenewalIntervalInSeconds: 15
leaseExpirationDurationInSeconds: 45
metadata-map:
server.servlet.context-path: ${server.servlet.context-path}
client:
enabled: true
serviceUrl:
defaultZone: http://localhost:8761/eureka
мой тест / шаблон службы bootstrap.yml
spring:
application:
name: templateservice
eureka:
instance:
hostname: ${spring.application.name}
preferIpAddress: true
instanceId: ${spring.application.name}:${spring.application.instance_id:${random.value}}
statusPageUrlPath: ${server.servlet.context-path}/actuator/info
healthCheckUrlPath: ${server.servlet.context-path}/actuator/health
leaseRenewalIntervalInSeconds: 15
leaseExpirationDurationInSeconds: 45
metadata-map:
server.servlet.context-path: ${server.servlet.context-path}
client:
enabled: true
serviceUrl:
defaultZone: http://localhost:8761/eureka
logging:
level:
com...MessageServiceClient: DEBUG
мой клиент Feign
@FeignClient(name = "secondservice", configuration = FeignConfig.class)
public interface MessageServiceClient {
@RequestMapping(method = RequestMethod.GET, value = "/dummy")
public String getMessage();
}
Мой класс обслуживания:
@Autowired MessageServiceClient messageServiceClient;
@Autowired private LoadBalancerClient loadBalancer;
public String getDummyMessage() {
ServiceInstance instance = loadBalancer.choose("secondservice");
URI secondServiceUri = URI.create(String.format("http://%s:%s", instance.getHost(), instance.getPort()));
System.out.println(secondServiceUri); // logs http://192.168.0.205:8090, check log below
return messageServiceClient.getMessage(); // throws 404??
}
В FeignConfig единственное, что нужно сделать, это установить для уровня журнала значение FULL.Журнал выглядит следующим образом:
2018-10-08 11:14:59.511 INFO [templateservice,,,] 16801 --- [onPool-worker-2] s.c.a.AnnotationConfigApplicationContext : Refreshing SpringClientFactory-secondservice: startup date [Mon Oct 08 11:14:59 IST 2018]; parent: org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@451f35ad
2018-10-08 11:14:59.683 INFO [templateservice,,,] 16801 --- [onPool-worker-2] f.a.AutowiredAnnotationBeanPostProcessor : JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
2018-10-08 11:15:00.042 INFO [templateservice,,,] 16801 --- [onPool-worker-2] c.netflix.config.ChainedDynamicProperty : Flipping property: secondservice.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
2018-10-08 11:15:00.095 INFO [templateservice,,,] 16801 --- [onPool-worker-2] c.n.u.concurrent.ShutdownEnabledTimer : Shutdown hook installed for: NFLoadBalancer-PingTimer-secondservice
2018-10-08 11:15:00.146 INFO [templateservice,,,] 16801 --- [onPool-worker-2] c.netflix.loadbalancer.BaseLoadBalancer : Client: secondservice instantiated a LoadBalancer: DynamicServerListLoadBalancer:{NFLoadBalancer:name=secondservice,current list of Servers=[],Load balancer stats=Zone stats: {},Server stats: []}ServerList:null
2018-10-08 11:15:00.189 INFO [templateservice,,,] 16801 --- [onPool-worker-2] c.n.l.DynamicServerListLoadBalancer : Using serverListUpdater PollingServerListUpdater
2018-10-08 11:15:00.287 INFO [templateservice,,,] 16801 --- [onPool-worker-2] c.netflix.config.ChainedDynamicProperty : Flipping property: secondservice.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
2018-10-08 11:15:00.291 INFO [templateservice,,,] 16801 --- [onPool-worker-2] c.n.l.DynamicServerListLoadBalancer : DynamicServerListLoadBalancer for client secondservice initialized: DynamicServerListLoadBalancer:{NFLoadBalancer:name=secondservice,current list of Servers=[192.168.0.205:8090, 192.168.0.205:8090],Load balancer stats=Zone stats: {defaultzone=[Zone:defaultzone; Instance count:2; Active connections count: 0; Circuit breaker tripped count: 0; Active connections per server: 0.0;]
},Server stats: [[Server:192.168.0.205:8090; Zone:defaultZone; Total Requests:0; Successive connection failure:0; Total blackout seconds:0; Last connection made:Thu Jan 01 05:30:00 IST 1970; First connection made: Thu Jan 01 05:30:00 IST 1970; Active Connections:0; total failure count in last (1000) msecs:0; average resp time:0.0; 90 percentile resp time:0.0; 95 percentile resp time:0.0; min resp time:0.0; max resp time:0.0; stddev resp time:0.0]
]}ServerList:org.springframework.cloud.netflix.ribbon.eureka.DomainExtractingServerList@3625959e
http://192.168.0.205:8090
2018-10-08 11:15:01.215 INFO [templateservice,,,] 16801 --- [erListUpdater-0] c.netflix.config.ChainedDynamicProperty : Flipping property: secondservice.ribbon.ActiveConnectionsLimit to use NEXT property: niws.loadbalancer.availabilityFilteringRule.activeConnectionsLimit = 2147483647
2018-10-08 11:15:07.951 DEBUG [templateservice,,,] 16801 --- [onPool-worker-2] c.e.m.t.clients.MessageServiceClient : [MessageServiceClient#getMessage] ---> GET http://secondservice/dummy HTTP/1.1
2018-10-08 11:15:12.527 DEBUG [templateservice,,,] 16801 --- [onPool-worker-2] c.e.m.t.clients.MessageServiceClient : [MessageServiceClient#getMessage] <--- HTTP/1.1 404 (4575ms)
2018-10-08 11:15:12.559 ERROR [templateservice,7004692c56b2e643,7004692c56b2e643,false] 16801 --- [nio-8080-exec-4] o.s.c.s.i.web.ExceptionLoggingFilter : Uncaught exception thrown
Проблема в том, что это выбрасывает 404, конечно, потому что URL-адрес, на который он пытается попасть, равен http://secondservice/dummy
, а такой вещи нет.Может помочь заметить, что если я установлю url
на FeignClient, он будет работать, но тогда какой смысл в Eureka?Кроме того, когда это работает, клиенты fiegn будут автоматически использовать контекстный путь?или я должен указать это в каждом URL на клиенте?
ОБНОВЛЕНИЕ 1 : Ответ на: http://localhost:8761/eureka/apps/secondservice