【Spring Cloud 基础设施搭建系列】Spring Cloud Demo项目 Spring Cloud Config Client 失败快速响应与超时重试

文章目录Spring Cloud Config Client 失败快速响应与重试测试参考源代码Spring Cloud Config Client 失败快速响应与重试Spring Cloud Config的客户端会先加载自己的配置文件，然后再开始连接ConfigServer进行配置加载。当我们构建的应用较为复杂的时候，可能在连接ConfigServer之前花费较长的启动时间，而在一些特殊..

c.

2950人浏览 · 2019-10-22 22:16:12

c. · 2019-10-22 22:16:12 发布

文章目录

Spring Cloud Config Client 失败快速响应与重试

Spring Cloud Config的客户端会先加载自己的配置文件，然后再开始连接ConfigServer进行配置加载。当我们构建的应用较为复杂的时候，可能在连接ConfigServer之前花费较长的启动时间，而在一些特殊场景下，我们又希望可以快速知道当前应用是否能顺利地从ConfigServer获取到配置信息，这对在初期构建调试环境时，可以减少很多等待启动的时间。当然

当然上面是其中的一些原因，至于为什么我需要配置一下config client的失败快速响应和重试呢，是因为后面我会讲一下通过Docker Compose编排微服务，但是Docker Compose是很难控制容器的就绪的顺序，注意我这里说的是就绪的顺序，也就是等待一个容器启动完毕之后才启动另一个容器。这种是比较难控制的。所以当我们的config server端还没有就绪的时候，可能config client端已经在启动了，所以我们希望config client端能够快速的知道config server现在是否已经就绪了，而且不希望我们的config client端获取配置的时候失败，希望能够在失败之后能够重新尝试获取配置，以给 config server 时间进行恢复。基于以上的原因所以这里我需要来学习一下Spring Cloud Config Client失败快速响应与超时重试，当然关于Docker Compose编排微服务后面会讲到。

开启客户端重试功能需要两个新依赖，spring-retry 和 spring-boot-starter-aop，把如下代码添加到项目的 pom.xml 文件中

<dependency>
    <groupId>org.springframework.retry</groupId>
    <artifactId>spring-retry</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

然后在 bootstrap.yml 文件中添加如下配置：

cloud:
    config:
        fail-fast: true
        retry:
            initial-interval: 1000
            max-attempts: 15
            max-interval: 2000
            multiplier: 1.1

首先把spring.cloud.config.fail-fast设置为true，即在获取不到远程配置时，立即失败，但是用下边的配置进行重试。

spring.cloud.config.retry 所有子项均为默认值：
initial-interval: 最初重试间隔为 1000 毫秒
max-attempts: 最多重试 15 次
max-interval: 最长重试间隔为 2000 毫秒
multiplier: 每次重试失败后，重试间隔所增加的倍数

测试

我们先把eureka启动起来，然后再把config server启动起来，之后我们关闭config server。之后我们启动我们的config client端的服务。过一会之后我们在启动config server。

然后我们就可以看到我们config client端的日志如下：

2019-10-22 22:01:56.608  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.retry.annotation.RetryConfiguration' of type [org.springframework.retry.annotation.RetryConfiguration$$EnhancerBySpringCGLIB$$a5c64fc6] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:01:56.634  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$cc1cba9e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:02:06.201  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.cloud.commons.util.InetUtils         : Cannot determine local hostname
2019-10-22 22:02:06.224  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
2019-10-22 22:02:06.319  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
2019-10-22 22:02:06.493  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
2019-10-22 22:02:06.493  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
2019-10-22 22:02:06.719  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
2019-10-22 22:02:06.720  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
2019-10-22 22:02:06.999  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
2019-10-22 22:02:14.097  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
2019-10-22 22:02:14.098  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
2019-10-22 22:02:14.098  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
2019-10-22 22:02:14.098  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Application is null : false
2019-10-22 22:02:14.098  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
2019-10-22 22:02:14.098  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
2019-10-22 22:02:14.098  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
2019-10-22 22:02:14.314  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : The response status is 200
2019-10-22 22:02:14.318  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Not registering with Eureka server per configuration
2019-10-22 22:02:14.324  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1571752934323 with initial instances count: 1

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.1.RELEASE)

2019-10-22 22:02:22.853  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:24.914  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:25.920  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:27.926  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:29.030  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:31.036  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:32.251  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:34.258  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:35.592  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:37.605  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:39.075  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:41.082  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:42.697  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:44.703  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:46.479  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:48.487  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:50.438  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:52.445  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:54.448  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:02:56.455  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:58.459  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:03:00.473  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:03:02.477  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:03:04.491  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:03:06.495  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/
2019-10-22 22:03:20.426  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Located environment: name=cloud-service-member, profiles=[dev], label=null, version=0863d167ac2543a45a84fb01bed0716985539aca, state=null
2019-10-22 22:03:20.426  INFO [cloud-service-member,,,] 9604 --- [           main] b.c.PropertySourceBootstrapConfiguration : Located property source: CompositePropertySource {name='configService', propertySources=[MapPropertySource {name='configClient'}, MapPropertySource {name='https://gitee.com/cckevincyh/spring-cloud-demo.git/cloud-config/dev/cloud-service-member/application.yml'}, MapPropertySource {name='https://gitee.com/cckevincyh/spring-cloud-demo.git/cloud-config/dev/common/application.yml'}, MapPropertySource {name='https://gitee.com/cckevincyh/spring-cloud-demo.git/cloud-config/default/common/application.yml'}]}
2019-10-22 22:03:20.472  INFO [cloud-service-member,,,] 9604 --- [           main] com.cc.cloud.member.MemberApp            : No active profile set, falling back to default profiles: default
2019-10-22 22:03:21.511  WARN [cloud-service-member,,,] 9604 --- [           main] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'bus-env' contains invalid characters, please migrate to a valid format.
2019-10-22 22:03:21.515  WARN [cloud-service-member,,,] 9604 --- [           main] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'bus-refresh' contains invalid characters, please migrate to a valid format.
2019-10-22 22:03:21.867  WARN [cloud-service-member,,,] 9604 --- [           main] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'service-registry' contains invalid characters, please migrate to a valid format.
2019-10-22 22:03:21.962  WARN [cloud-service-member,,,] 9604 --- [           main] o.s.boot.actuate.endpoint.EndpointId     : Endpoint ID 'hystrix.stream' contains invalid characters, please migrate to a valid format.
2019-10-22 22:03:22.262  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.cloud.context.scope.GenericScope     : BeanFactory id=00d31ea1-f947-3eaf-9d39-547d762fe562
2019-10-22 22:03:22.284  INFO [cloud-service-member,,,] 9604 --- [           main] faultConfiguringBeanFactoryPostProcessor : No bean named 'errorChannel' has been explicitly defined. Therefore, a default PublishSubscribeChannel will be created.
2019-10-22 22:03:22.296  INFO [cloud-service-member,,,] 9604 --- [           main] faultConfiguringBeanFactoryPostProcessor : No bean named 'taskScheduler' has been explicitly defined. Therefore, a default ThreadPoolTaskScheduler will be created.
2019-10-22 22:03:22.304  INFO [cloud-service-member,,,] 9604 --- [           main] faultConfiguringBeanFactoryPostProcessor : No bean named 'integrationHeaderChannelRegistry' has been explicitly defined. Therefore, a default DefaultHeaderChannelRegistry will be created.
2019-10-22 22:03:22.331  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration' of type [org.springframework.amqp.rabbit.annotation.RabbitBootstrapConfiguration$$EnhancerBySpringCGLIB$$766e75cf] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:03:22.639  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'integrationDisposableAutoCreatedBeans' of type [org.springframework.integration.config.annotation.Disposables] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:03:22.693  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.integration.config.IntegrationManagementConfiguration' of type [org.springframework.integration.config.IntegrationManagementConfiguration$$EnhancerBySpringCGLIB$$1af472d0] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:03:22.715  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.boot.autoconfigure.integration.IntegrationAutoConfiguration$IntegrationJmxConfiguration' of type [org.springframework.boot.autoconfigure.integration.IntegrationAutoConfiguration$IntegrationJmxConfiguration$$EnhancerBySpringCGLIB$$f6867df0] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:03:22.733  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration' of type [org.springframework.boot.autoconfigure.jmx.JmxAutoConfiguration$$EnhancerBySpringCGLIB$$2f6e26bd] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:03:22.753  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'mbeanServer' of type [com.sun.jmx.mbeanserver.JmxMBeanServer] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:03:22.801  INFO [cloud-service-member,,,] 9604 --- [           main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration' of type [org.springframework.cloud.autoconfigure.ConfigurationPropertiesRebinderAutoConfiguration$$EnhancerBySpringCGLIB$$cc1cba9e] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-10-22 22:03:23.411  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8762 (http)
2019-10-22 22:03:23.439  INFO [cloud-service-member,,,] 9604 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2019-10-22 22:03:23.439  INFO [cloud-service-member,,,] 9604 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/9.0.13
2019-10-22 22:03:23.446  INFO [cloud-service-member,,,] 9604 --- [           main] o.a.catalina.core.AprLifecycleListener   : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [C:\Program Files\Java\jdk1.8.0_92\bin;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\ProgramData\Oracle\Java\javapath;C:\Program Files\Java\jdk1.8.0_92\bin;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;D:\Maven\apache-maven-3.2.5\bin;D:\Groovy-2.4.7\bin;C:\Windows\System32;D:\Git\cmd;D:\GitExtensions\;C:\NodeJS\;D:\Docker Toolbox;C:\WINDOWS;C:\WINDOWS\system32\wbem;C:\WINDOWS\system32;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;D:\minikube;D:\kubectl;C:\Users\c\AppData\Local\Programs\Python\Python36\Scripts\;C:\Users\c\AppData\Local\Programs\Python\Python36\;C:\Users\c\AppData\Roaming\npm;C:\Users\c\AppData\Local\Microsoft\WindowsApps;;D:\Docker Toolbox;.]
2019-10-22 22:03:23.647  INFO [cloud-service-member,,,] 9604 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-10-22 22:03:23.647  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3157 ms
2019-10-22 22:03:23.864  WARN [cloud-service-member,,,] 9604 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2019-10-22 22:03:23.864  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2019-10-22 22:03:23.879  INFO [cloud-service-member,,,] 9604 --- [           main] c.netflix.config.DynamicPropertyFactory  : DynamicPropertyFactory is initialized with configuration sources: com.netflix.config.ConcurrentCompositeConfiguration@a1e912f
2019-10-22 22:03:29.780  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.s.c.ThreadPoolTaskScheduler          : Initializing ExecutorService 'taskScheduler'
2019-10-22 22:03:30.300  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.b.a.e.web.ServletEndpointRegistrar   : Registered '/actuator/hystrix.stream' to hystrix.stream-actuator-endpoint
2019-10-22 22:03:30.377  WARN [cloud-service-member,,,] 9604 --- [           main] c.n.c.sources.URLConfigurationSource     : No URLs will be polled as dynamic configuration sources.
2019-10-22 22:03:30.377  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.c.sources.URLConfigurationSource     : To enable URLs as dynamic configuration sources, define System property archaius.configurationSource.additionalUrls or make config.properties available on classpath.
2019-10-22 22:03:30.711  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2019-10-22 22:03:39.115  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.cloud.commons.util.InetUtils         : Cannot determine local hostname
2019-10-22 22:03:46.452  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.cloud.commons.util.InetUtils         : Cannot determine local hostname
2019-10-22 22:03:52.987  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Shutting down DiscoveryClient ...
2019-10-22 22:03:52.995  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Completed shut down of DiscoveryClient
2019-10-22 22:03:53.182  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.b.a.e.web.EndpointLinksResolver      : Exposing 25 endpoint(s) beneath base path '/actuator'
2019-10-22 22:03:53.361  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.c.s.m.DirectWithAttributesChannel    : Channel 'cloud-service-member-1.springCloudBusInput' has 1 subscriber(s).
2019-10-22 22:03:53.535  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel errorChannel
2019-10-22 22:03:53.629  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel springCloudBusOutput
2019-10-22 22:03:53.680  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel springCloudBusInput
2019-10-22 22:03:53.688  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel nullChannel
2019-10-22 22:03:53.714  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageHandler errorLogger
2019-10-22 22:03:53.737  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageHandler org.springframework.cloud.stream.binding.StreamListenerMessageHandler@7fd4b9ec
2019-10-22 22:03:53.781  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.endpoint.EventDrivenConsumer       : Adding {logging-channel-adapter:_org.springframework.integration.errorLogger} as a subscriber to the 'errorChannel' channel
2019-10-22 22:03:53.782  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.channel.PublishSubscribeChannel    : Channel 'cloud-service-member-1.errorChannel' has 1 subscriber(s).
2019-10-22 22:03:53.782  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.endpoint.EventDrivenConsumer       : started _org.springframework.integration.errorLogger
2019-10-22 22:04:01.254  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://192.168.174.1:8090/
2019-10-22 22:04:09.478  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Located environment: name=cloud-service-member, profiles=[dev], label=null, version=0863d167ac2543a45a84fb01bed0716985539aca, state=null
2019-10-22 22:04:09.478  INFO [cloud-service-member,,,] 9604 --- [           main] b.c.PropertySourceBootstrapConfiguration : Located property source: CompositePropertySource {name='configService', propertySources=[MapPropertySource {name='configClient'}, MapPropertySource {name='https://gitee.com/cckevincyh/spring-cloud-demo.git/cloud-config/dev/cloud-service-member/application.yml'}, MapPropertySource {name='https://gitee.com/cckevincyh/spring-cloud-demo.git/cloud-config/dev/common/application.yml'}, MapPropertySource {name='https://gitee.com/cckevincyh/spring-cloud-demo.git/cloud-config/default/common/application.yml'}]}
2019-10-22 22:04:09.993  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Attempting to connect to: [192.168.99.100:5672]
2019-10-22 22:04:10.040  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.a.r.c.CachingConnectionFactory       : Created new connection: rabbitConnectionFactory#65f5cae3:0/SimpleConnection@1b53e6fc [delegate=amqp://guest@192.168.99.100:5672/, localPort= 55618]
2019-10-22 22:04:10.090  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.c.s.m.DirectWithAttributesChannel    : Channel 'cloud-service-member-1.springCloudBusOutput' has 1 subscriber(s).
2019-10-22 22:04:10.108  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.c.n.eureka.InstanceInfoFactory       : Setting initial instance status as: STARTING
2019-10-22 22:04:10.117  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Initializing Eureka in region us-east-1
2019-10-22 22:04:10.121  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON encoding codec LegacyJacksonJson
2019-10-22 22:04:10.121  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using JSON decoding codec LegacyJacksonJson
2019-10-22 22:04:10.121  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML encoding codec XStreamXml
2019-10-22 22:04:10.121  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.provider.DiscoveryJerseyProvider   : Using XML decoding codec XStreamXml
2019-10-22 22:04:10.189  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.d.s.r.aws.ConfigClusterResolver      : Resolving eureka endpoints via configuration
2019-10-22 22:04:10.479  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Disable delta property : false
2019-10-22 22:04:10.480  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Single vip registry refresh property : null
2019-10-22 22:04:10.480  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Force full registry fetch : false
2019-10-22 22:04:10.480  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Application is null : false
2019-10-22 22:04:10.480  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Registered Applications size is zero : true
2019-10-22 22:04:10.480  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Application version is -1: true
2019-10-22 22:04:10.480  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Getting all instance registry info from the eureka server
2019-10-22 22:04:10.485  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : The response status is 200
2019-10-22 22:04:10.486  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Starting heartbeat executor: renew interval is: 30
2019-10-22 22:04:10.489  INFO [cloud-service-member,,,] 9604 --- [           main] c.n.discovery.InstanceInfoReplicator     : InstanceInfoReplicator onDemand update allowed rate per min is 4
2019-10-22 22:04:10.490  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Discovery Client initialized at timestamp 1571753050490 with initial instances count: 1
2019-10-22 22:04:10.498  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.c.n.e.s.EurekaServiceRegistry        : Registering application CLOUD-SERVICE-MEMBER with eureka with status UP
2019-10-22 22:04:10.499  INFO [cloud-service-member,,,] 9604 --- [           main] com.netflix.discovery.DiscoveryClient    : Saw local status change event StatusChangeEvent [timestamp=1571753050499, current=UP, previous=STARTING]
2019-10-22 22:04:10.502  INFO [cloud-service-member,,,] 9604 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_CLOUD-SERVICE-MEMBER/localhost:cloud-service-member:8762: registering service...
2019-10-22 22:04:10.546  INFO [cloud-service-member,,,] 9604 --- [           main] c.s.b.r.p.RabbitExchangeQueueProvisioner : declaring queue for inbound: springCloudBus.anonymous.v2plp5JlS8mxp04vaNlUxw, bound to: springCloudBus
2019-10-22 22:04:10.548  INFO [cloud-service-member,,,] 9604 --- [nfoReplicator-0] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_CLOUD-SERVICE-MEMBER/localhost:cloud-service-member:8762 - registration status: 204
2019-10-22 22:04:10.585  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.monitor.IntegrationMBeanExporter   : Registering MessageChannel springCloudBus.anonymous.v2plp5JlS8mxp04vaNlUxw.errors
2019-10-22 22:04:10.745  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.c.stream.binder.BinderErrorChannel   : Channel 'cloud-service-member-1.springCloudBus.anonymous.v2plp5JlS8mxp04vaNlUxw.errors' has 1 subscriber(s).
2019-10-22 22:04:10.746  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.c.stream.binder.BinderErrorChannel   : Channel 'cloud-service-member-1.springCloudBus.anonymous.v2plp5JlS8mxp04vaNlUxw.errors' has 2 subscriber(s).
2019-10-22 22:04:10.790  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.i.a.i.AmqpInboundChannelAdapter      : started inbound.springCloudBus.anonymous.v2plp5JlS8mxp04vaNlUxw
2019-10-22 22:04:11.046  INFO [cloud-service-member,,,] 9604 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8762 (http) with context path ''
2019-10-22 22:04:11.046  INFO [cloud-service-member,,,] 9604 --- [           main] .s.c.n.e.s.EurekaAutoServiceRegistration : Updating port to 8762

我们可以看到下面的log，看到config client端是尝试去连接config server，如果我们中途启动了config server，那么我们的config client端就能启动成功。

2019-10-22 22:02:27.926  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Connect Timeout Exception on Url - http://localhost:8090/. Will be trying the next url if available
2019-10-22 22:02:29.030  INFO [cloud-service-member,,,] 9604 --- [           main] c.c.c.ConfigServicePropertySourceLocator : Fetching config from server at : http://localhost:8090/

参考

Spring Cloud Config Client 超时与重试

spring-cloud-config失败快速响应与重试

Spring Cloud Config Client 超时与重试

源代码

https://gitee.com/cckevincyh/spring-cloud-demo/tree/config-client-retry/

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