Spring Boot + Eureka Server +带涡轮机的Hystrix：空涡轮机

时间：2015-02-06 11:52:55

标签： spring-boot groovy spring-cloud hystrix turbine

我正在尝试运行Spring Boot（使用Spring Cloud）+ Eureka Server + Hystrix Dashboard和Turbine流，但是我遇到了一个问题，到目前为止我找不到任何解决方案。我使用Spring Boot 1.2.1.RELEASE 和Spring Cloud 1.0.0.RC2 。这就是我所拥有的：

第一个实例是运行Eureka服务器和Hystrix仪表板：

@Configuration
@EnableAutoConfiguration
@EnableEurekaServer
@EnableHystrixDashboard
@EnableDiscoveryClient
class Application {

    public static void main(String[] args) {
        SpringApplication.run Application, args
    }
}

您可以在此处找到该实例的build.gradle - https://gist.github.com/wololock/570272ad7cf2d14a4d3c

Eureka服务器运行正常，我可以在eureka服务器仪表板上看到已注册的实例，我也可以使用LoadBalancer使用其ID获取已注册实例的URL。到目前为止一切正常。

我有一些使用@EnableHystrix注释运行的实例，并使用@HystrixCommand来定义Hystrix必须监视哪些方法。当我将URL传递给单个实例的hystrix.stream到Hystrix仪表板时，我可以看到它运行没有问题。

我也有单独的Turbine服务器，而不是复杂的服务器：

@EnableAutoConfiguration
@EnableTurbine
@Configuration
@EnableDiscoveryClient
class Application {

    public static void main(String[] args) {
        SpringApplication.run Application, args
    }
}

您可以在此处找到Turbine服务器实例的build.gradle - https://gist.github.com/wololock/ff0d855b8a890232851e

它使用非常简单的配置，主要基于样本涡轮应用程序提供的配置 - https://github.com/spring-cloud-samples/turbine 

info:
  component: Turbine

endpoints:
  restart:
    enabled: true
  shutdown:
    enabled: true

turbine:
  appConfig: pdf-creator-service

InstanceDiscovery:
  impl: io.spring.platform.netflix.turbine.EurekaInstanceDiscovery

server:
  port: 8989

management:
  port: 8990

eureka:
  instance:
    leaseRenewalIntervalInSeconds: 10
  client:
    serviceUrl:
      defaultZone: ${vcap.services.${PREFIX:}eureka.credentials.uri:http://user:password@localhost:8761}/eureka/

按顺序运行这些实例后：

  1. eureka服务器
  2. 涡轮机服务器
  3. 发现客户端实例，

    4. 我在eureka服务器上注册了第二个和第三个实例，涡轮服务器日志说，有一个实例：

    [2015-02-06 12:35:04.162] boot - 20495  INFO [Timer-0] --- EurekaInstanceDiscovery: Fetching instance list for apps: [pdf-creator-service]
[2015-02-06 12:35:04.162] boot - 20495  INFO [Timer-0] --- EurekaInstanceDiscovery: Fetching instances for app: pdf-creator-service
[2015-02-06 12:35:04.162] boot - 20495  INFO [Timer-0] --- EurekaInstanceDiscovery: Received instance list for app: pdf-creator-service = 1
[2015-02-06 12:35:04.162] boot - 20495  INFO [Timer-0] --- InstanceObservable: Retrieved hosts from InstanceDiscovery: 1
[2015-02-06 12:35:04.162] boot - 20495  INFO [Timer-0] --- InstanceObservable: Found hosts that have been previously terminated: 0
[2015-02-06 12:35:04.162] boot - 20495  INFO [Timer-0] --- InstanceObservable: Hosts up:1, hosts down: 0
[2015-02-06 12:36:04.162] boot - 20495  INFO [Timer-0] --- EurekaInstanceDiscovery: Fetching instance list for apps: [pdf-creator-service]
[2015-02-06 12:36:04.162] boot - 20495  INFO [Timer-0] --- EurekaInstanceDiscovery: Fetching instances for app: pdf-creator-service
[2015-02-06 12:36:04.162] boot - 20495  INFO [Timer-0] --- EurekaInstanceDiscovery: Received instance list for app: pdf-creator-service = 1
[2015-02-06 12:36:04.162] boot - 20495  INFO [Timer-0] --- InstanceObservable: Retrieved hosts from InstanceDiscovery: 1
[2015-02-06 12:36:04.162] boot - 20495  INFO [Timer-0] --- InstanceObservable: Found hosts that have been previously terminated: 0
[2015-02-06 12:36:04.162] boot - 20495  INFO [Timer-0] --- InstanceObservable: Hosts up:1, hosts down: 0

    从单个实例调用hystrix.stream，例如curl http://localhost:8885/hystrix.stream返回：

    data: {"type":"HystrixCommand","name":"post","group":"PdfController","currentTime":1423223614259,"isCircuitBreakerOpen":false,"errorPercentage":0,"errorCount":0,"requestCount":0,"rollingCountCollapsedRequests":0,"rollingCountExceptionsThrown":0,"rollingCountFailure":0,"rollingCountFallbackFailure":0,"rollingCountFallbackRejection":0,"rollingCountFallbackSuccess":0,"rollingCountResponsesFromCache":0,"rollingCountSemaphoreRejected":0,"rollingCountShortCircuited":0,"rollingCountSuccess":0,"rollingCountThreadPoolRejected":0,"rollingCountTimeout":0,"currentConcurrentExecutionCount":0,"latencyExecute_mean":0,"latencyExecute":{"0":0,"25":0,"50":0,"75":0,"90":0,"95":0,"99":0,"99.5":0,"100":0},"latencyTotal_mean":0,"latencyTotal":{"0":0,"25":0,"50":0,"75":0,"90":0,"95":0,"99":0,"99.5":0,"100":0},"propertyValue_circuitBreakerRequestVolumeThreshold":20,"propertyValue_circuitBreakerSleepWindowInMilliseconds":5000,"propertyValue_circuitBreakerErrorThresholdPercentage":50,"propertyValue_circuitBreakerForceOpen":false,"propertyValue_circuitBreakerForceClosed":false,"propertyValue_circuitBreakerEnabled":true,"propertyValue_executionIsolationStrategy":"THREAD","propertyValue_executionIsolationThreadTimeoutInMilliseconds":8000,"propertyValue_executionIsolationThreadInterruptOnTimeout":true,"propertyValue_executionIsolationThreadPoolKeyOverride":null,"propertyValue_executionIsolationSemaphoreMaxConcurrentRequests":10,"propertyValue_fallbackIsolationSemaphoreMaxConcurrentRequests":10,"propertyValue_metricsRollingStatisticalWindowInMilliseconds":10000,"propertyValue_requestCacheEnabled":true,"propertyValue_requestLogEnabled":true,"reportingHosts":1}

data: {"type":"HystrixCommand","name":"generate","group":"WkHtmlToPdfGenerator","currentTime":1423223614259,"isCircuitBreakerOpen":false,"errorPercentage":0,"errorCount":0,"requestCount":0,"rollingCountCollapsedRequests":0,"rollingCountExceptionsThrown":0,"rollingCountFailure":0,"rollingCountFallbackFailure":0,"rollingCountFallbackRejection":0,"rollingCountFallbackSuccess":0,"rollingCountResponsesFromCache":0,"rollingCountSemaphoreRejected":0,"rollingCountShortCircuited":0,"rollingCountSuccess":0,"rollingCountThreadPoolRejected":0,"rollingCountTimeout":0,"currentConcurrentExecutionCount":0,"latencyExecute_mean":0,"latencyExecute":{"0":0,"25":0,"50":0,"75":0,"90":0,"95":0,"99":0,"99.5":0,"100":0},"latencyTotal_mean":0,"latencyTotal":{"0":0,"25":0,"50":0,"75":0,"90":0,"95":0,"99":0,"99.5":0,"100":0},"propertyValue_circuitBreakerRequestVolumeThreshold":20,"propertyValue_circuitBreakerSleepWindowInMilliseconds":5000,"propertyValue_circuitBreakerErrorThresholdPercentage":50,"propertyValue_circuitBreakerForceOpen":false,"propertyValue_circuitBreakerForceClosed":false,"propertyValue_circuitBreakerEnabled":true,"propertyValue_executionIsolationStrategy":"THREAD","propertyValue_executionIsolationThreadTimeoutInMilliseconds":8000,"propertyValue_executionIsolationThreadInterruptOnTimeout":true,"propertyValue_executionIsolationThreadPoolKeyOverride":null,"propertyValue_executionIsolationSemaphoreMaxConcurrentRequests":10,"propertyValue_fallbackIsolationSemaphoreMaxConcurrentRequests":10,"propertyValue_metricsRollingStatisticalWindowInMilliseconds":10000,"propertyValue_requestCacheEnabled":true,"propertyValue_requestLogEnabled":true,"reportingHosts":1}

data: {"type":"HystrixThreadPool","name":"PdfController","currentTime":1423223614259,"currentActiveCount":0,"currentCompletedTaskCount":4,"currentCorePoolSize":10,"currentLargestPoolSize":4,"currentMaximumPoolSize":10,"currentPoolSize":4,"currentQueueSize":0,"currentTaskCount":4,"rollingCountThreadsExecuted":0,"rollingMaxActiveThreads":0,"propertyValue_queueSizeRejectionThreshold":5,"propertyValue_metricsRollingStatisticalWindowInMilliseconds":10000,"reportingHosts":1}

    但是当我将turbine.stream连接到hystrix仪表板时，我什么都没得到。日志说：

    [2015-02-06 12:42:48.922] boot - 24816  INFO [Timer-0] --- EurekaInstanceDiscovery: Received instance list for app: pdf-creator-service = 1
[2015-02-06 12:42:48.922] boot - 24816  INFO [Timer-0] --- InstanceObservable: Retrieved hosts from InstanceDiscovery: 1
[2015-02-06 12:42:48.922] boot - 24816  INFO [Timer-0] --- InstanceObservable: Found hosts that have been previously terminated: 0
[2015-02-06 12:42:48.922] boot - 24816  INFO [Timer-0] --- InstanceObservable: Hosts up:1, hosts down: 0
[2015-02-06 12:43:26.237] boot - 24816  INFO [XNIO-2 task-4] --- TurbineStreamServlet: FilterCriteria: []
[2015-02-06 12:43:26.237] boot - 24816  INFO [XNIO-2 task-4] --- TurbineStreamServlet: StatsType filters: []
[2015-02-06 12:43:26.237] boot - 24816  INFO [XNIO-2 task-4] --- TurbineStreamingConnection: Relevance config: []
[2015-02-06 12:43:26.237] boot - 24816  INFO [XNIO-2 task-4] --- TurbineStreamingConnection: Relevance metrics config: {}
[2015-02-06 12:43:26.237] boot - 24816  INFO [XNIO-2 task-4] --- ClusterMonitor: Registering event handler for cluster monitor: StreamingHandler_f1308dda-58c5-47a5-b1e2-5a0bea32226b
[2015-02-06 12:43:26.237] boot - 24816  INFO [XNIO-2 task-4] --- TurbineDataDispatcher: 

Just added and starting handler tuple: StreamingHandler_f1308dda-58c5-47a5-b1e2-5a0bea32226b
[2015-02-06 12:43:26.238] boot - 24816  INFO [XNIO-2 task-4] --- AggDataFromCluster: Per handler dispacher started for: StreamingHandler_f1308dda-58c5-47a5-b1e2-5a0bea32226b
[2015-02-06 12:43:26.238] boot - 24816  INFO [XNIO-2 task-4] --- ClusterMonitor: All event handlers for cluster monitor: [StreamingHandler_637572ab-acda-4bf4-81cd-6a658adb73eb, StreamingHandler_f1308dda-58c5-47a5-b1e2-5a0bea32226b, StaticListener_For_Aggregator, StreamingHandler_5ec12ee8-3fcd-4a6f-9006-d2a6ecc309d0, StreamingHandler_72d7b9e2-ad98-42a0-9ac3-abe4aa57cc7a]
[2015-02-06 12:43:26.238] boot - 24816  INFO [XNIO-2 task-4] --- ClusterMonitor: Starting up the cluster monitor for default_agg

    如果我curl http://localhost:8989/turbine.stream我只得到：

    : ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223006935}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223010935}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223013936}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223017936}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223020937}

: ping
: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223024937}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223028938}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223032938}

: ping
: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223036938}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223039939}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223043939}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223046940}

: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223050940}

: ping
: ping
data: {"reportingHostsLast10Seconds":0,"name":"meta","type":"meta","timestamp":1423223054941}

    我的问题是：我在设置和运行时遗漏了什么？以前我试图通过单一实例使用eureka和涡轮服务器来管理这个问题，但在这种情况下，涡轮机甚至无法使用正确的应用程序名称在eureka中找到已注册的应用程序。我在拆开尤里卡和涡轮机之后取得了进展，但它仍然无法正常工作。

    我将不胜感激任何建议。如果您需要更多信息，请告诉我，我可能会错过一些重要信息。

    更新20150209

    根据Dave的建议，我在application.yml的{​​{1}}文件中应用了少量更改。现在该文件仅包含：

    turbine-server

    但它并没有使turb.stream工作。在Turb-server知道eureka服务器中注册的客户端之后，它会失败并出现以下异常：

    info:
  component: Turbine

turbine:
  appConfig: pdf-creator-service
  clusterNameExpression: 'default'

server:
  port: 8989

management:
  port: 8990

eureka:
  instance:
    leaseRenewalIntervalInSeconds: 10
  client:
    serviceUrl:
      defaultZone: ${vcap.services.${PREFIX:}eureka.credentials.uri:http://user:password@localhost:8761}/eureka/

    我尝试写[2015-02-09 21:25:03.516] boot - 4808 INFO [Timer-0] --- EurekaInstanceDiscovery: Fetching instance list for apps: [pdf-creator-service] [2015-02-09 21:25:03.516] boot - 4808 INFO [Timer-0] --- EurekaInstanceDiscovery: Fetching instances for app: pdf-creator-service [2015-02-09 21:25:03.516] boot - 4808 INFO [Timer-0] --- EurekaInstanceDiscovery: Received instance list for app: pdf-creator-service = 1 [2015-02-09 21:25:03.520] boot - 4808 ERROR [Timer-0] --- EurekaInstanceDiscovery: Failed to fetch instances for app: pdf-creator-service, retrying once more org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 0): Property or field 'default' cannot be found on object of type 'com.netflix.appinfo.InstanceInfo' - maybe not public? at org.springframework.expression.spel.ast.PropertyOrFieldReference.readProperty(PropertyOrFieldReference.java:226) at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:93) at org.springframework.expression.spel.ast.PropertyOrFieldReference.getValueInternal(PropertyOrFieldReference.java:81) at org.springframework.expression.spel.ast.SpelNodeImpl.getValue(SpelNodeImpl.java:120) at org.springframework.expression.spel.standard.SpelExpression.getValue(SpelExpression.java:242) at org.springframework.cloud.netflix.turbine.EurekaInstanceDiscovery.getClusterName(EurekaInstanceDiscovery.java:183) at org.springframework.cloud.netflix.turbine.EurekaInstanceDiscovery.marshallInstanceInfo(EurekaInstanceDiscovery.java:141) at org.springframework.cloud.netflix.turbine.EurekaInstanceDiscovery.getInstancesForApp(EurekaInstanceDiscovery.java:123) at org.springframework.cloud.netflix.turbine.EurekaInstanceDiscovery.getInstanceList(EurekaInstanceDiscovery.java:88) at com.netflix.turbine.discovery.InstanceObservable.getInstanceList(InstanceObservable.java:327) at com.netflix.turbine.discovery.InstanceObservable.access$500(InstanceObservable.java:66) at com.netflix.turbine.discovery.InstanceObservable$1.run(InstanceObservable.java:258) at java.util.TimerThread.mainLoop(Timer.java:555) at java.util.TimerThread.run(Timer.java:505) 以及'default'，但遗憾的是结果不一样。

    解决方案

    感谢Dave Syer寻找合适的解决方案。基本上诀窍是添加什么：

    default

    到涡轮服务器应用程序实例中的turbine: clusterNameExpression: new String("default") 文件。它可能看起来很奇怪，我不相信它会起作用，但确实如此。现在，当我调用我的hystrix客户端应用程序时，我在application.yml中获得了由此应用程序以及hystrix.stream Turbine服务器提供的正确信息。我在涡轮服务器中的当前turbine.stream如下所示：

    application.yml

    info: component: Turbine turbine: clusterNameExpression: new String("default") appConfig: pdf-creator-service server: port: 8989 management: port: 8990 eureka: instance: leaseRenewalIntervalInSeconds: 10 client: serviceUrl: defaultZone: ${vcap.services.${PREFIX:}eureka.credentials.uri:http://user:password@localhost:8761}/eureka/ 保存有关hystrix客户端的信息（按其ID）。要将另一个客户端添加到您的涡轮服务器，您必须简单地将另一个实例ID，昏迷与前一个分开。这就是所有人：）

2 个答案:

答案 0 :(得分：10)

如果我为群集添加一些配置，例如

，它对我有用 
turbine:
  appConfig: customers,stores
  clusterNameExpression: new String('default')

Turbine必须知道如何构建＆＃34;集群＆＃34; name（应用程序集的聚合键）。默认设置是使用appname，因此如果您没有设置clusterNameExpression，则需要在流网址中使用查询参数，例如： /turbine.stream?cluster=CUSTOMERS（大写的appname）。

答案 1 :(得分：1)

在我的情况下，我有：7979 / mock.stream作为测试涡轮应用程序的客户端。涡轮机检查事件的时间（timeOfEvent），因此它仅显示当前的日期时间事件。

可以使用

关闭它

turbine.InstanceMonitor.eventStream.skipLineLogic.enabled = false

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