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社区首页 >问答首页 >Spring Boot +尤里卡服务器+带涡轮的Hystrix : empty turbine.stream

问Spring Boot +尤里卡服务器+带涡轮的Hystrix : empty turbine.stream
EN

Stack Overflow用户
提问于 2015-02-06 19:52:55
回答 2查看 16.2K关注 0票数 22

我正在尝试运行Spring Boot (使用Spring Cloud) + Eureka Server + Hystrix Dashboard和Turbine stream，但我遇到了一个问题，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：

第一个实例运行的是Eureka服务器和Hystrix仪表板：

代码语言：javascript
复制
@Configuration
@EnableAutoConfiguration
@EnableEurekaServer
@EnableHystrixDashboard
@EnableDiscoveryClient
class Application {

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

在这里，您可以找到该实例的build.gradle - https://gist.github.com/wololock/570272ad7cf2d14a4d3c

尤里卡服务器运行正常，我可以在尤里卡服务器仪表板上看到已注册的实例，我还可以使用LoadBalancer通过id获取已注册实例的URL。到目前为止，一切都很好。

我有一些使用@EnableHystrix注释运行的实例，它们使用@HystrixCommand来定义必须由Hystrix监视的方法。当我将单个实例的hystrix.stream的URL传递给Hystrix dashboard时，我可以看到它运行时没有任何问题。

我也有单独的Turbine服务器，并不复杂：

代码语言：javascript
复制
@EnableAutoConfiguration
@EnableTurbine
@Configuration
@EnableDiscoveryClient
class Application {

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

您可以在此处找到用于涡轮机服务器实例的build.gradle - https://gist.github.com/wololock/ff0d855b8a890232851e

它使用非常简单的配置，主要基于示例涡轮机app - https://github.com/spring-cloud-samples/turbine提供的配置

代码语言：javascript
复制
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 server
  2. turbine server
  3. discover客户端实例

我在eureka服务器中注册了第二个和第三个实例，涡轮机服务器日志显示，有一个实例正在运行：

代码语言：javascript
复制
[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是可行的，例如curl http://localhost:8885/hystrix.stream返回：

代码语言：javascript
复制
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附加到hystrix仪表板时，我什么也得不到。日志显示：

代码语言：javascript
复制
[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

如果我执行curl http://localhost:8989/turbine.stream，我只能得到：

代码语言：javascript
复制
: 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：我是不是在设置和运行时遗漏了什么？以前，我试图通过在单个实例中使用eureka和turbine服务器来管理此问题，但在这种情况下，turbine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。我在拆分尤里卡和涡轮机后取得了一些进展，但它仍然不能正常工作。

如果有任何建议，我将不胜感激。如果你需要更多信息，请告诉我，我可能会错过一些重要的东西。

更新20150209

按照戴夫的建议，我在turbine-server的application.yml文件中应用了一些小的更改。现在，该文件仅包含：

代码语言：javascript
复制
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/

但这并不能让turbine.stream正常工作。turbine server获知eureka服务器中已注册的客户端后，它会失败，并出现给定的异常：

代码语言：javascript
复制
[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)

我尝试过像编写default一样编写'default'，但不幸的是结果是一样的。

解决方案

感谢Dave Syer找到了合适的解决方案。基本上，这个技巧是添加了：

代码语言：javascript
复制
turbine:
    clusterNameExpression: new String("default")

转到to服务器应用程序实例中的application.yml文件。这可能看起来很奇怪，我不相信它会起作用，但它确实起作用了。现在，当我调用hystrix客户机应用程序时，我得到了该应用程序所服务的hystrix.stream以及Turbine服务器的turbine.stream中的正确信息。我当前在turbine服务器中的application.yml如下所示：

代码语言：javascript
复制
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/

turbine.appConfig保存关于hystrix客户端的信息(通过它们的ID)。要向您的涡轮机服务器添加另一个客户端，您只需将另一个实例id，coma与前一个实例id隔开即可。这就是所有的朋友们:)

spring-cloud
hystrix
turbine
spring-boot
groovy
EN

回答 2

Stack Overflow用户

回答已采纳

发布于 2015-02-10 00:34:04

如果我为集群添加一些配置，它对我来说是有效的，例如

代码语言：javascript
复制
turbine:
  appConfig: customers,stores
  clusterNameExpression: new String('default')

to必须知道如何构造“集群”名称(应用程序集的聚合键)。默认情况下使用appname，因此如果您没有设置clusterNameExpression，则需要在流URL中使用查询参数，例如/turbine.stream?cluster=CUSTOMERS (大写appname)。

票数 11
EN

Stack Overflow用户

发布于 2015-03-13 17:51:29

在我的例子中，我有:7979/mock.stream作为测试涡轮机应用程序的客户端。涡轮机检查事件时间(timeOfEvent)，因此它将仅显示当前日期和时间事件。

可以使用以下命令将其关闭

turbine.InstanceMonitor.eventStream.skipLineLogic.enabled = false

票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/28365202

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