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Spring Boot + Eureka Server + Hystrix与Turbine：turbine.stream为空。

spring-bootgroovyspring-cloudhystrixturbine
22

我试图运行Spring Boot（和Spring Cloud）+ Eureka Server + Hystrix Dashboard和Turbine流，但我遇到一个问题，目前找不到任何解决方案。我使用的是Spring Boot 1.2.1.RELEASE和Spring Cloud 1.0.0.RC2。这是我的情况：

第一个实例正在运行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
    }
}

这里你可以找到相应实例的build.gradle文件 - https://gist.github.com/wololock/570272ad7cf2d14a4d3c

Eureka服务器运行良好，我可以在Eureka服务器仪表板上看到已注册的实例，还可以使用LoadBalancer通过其id获取已注册实例的URL。目前一切正常。

我有几个使用@EnableHystrix注释并使用@HystrixCommand定义需要由Hystrix监视的方法的实例。当我将单个实例的URL传递给Hystrix仪表板的hystrix.stream时，我可以看到它正常运行。

我还有一个单独的Turbine服务器，不是很复杂:

@EnableAutoConfiguration
@EnableTurbine
@Configuration
@EnableDiscoveryClient
class Application {

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

在这里，您可以找到 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，主要是基于示例 turbine 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/
在按顺序运行以下实例后：
  1. eureka 服务器
  2. turbine 服务器
  3. 发现客户端实例

我已经在 eureka 服务器中注册了第二个和第三个实例，turbine 服务器日志显示有一个实例正在运行：

[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

单个实例中调用 hystrix.stream 是可行的，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，什么也没有显示。 日志显示：

Logs say:

[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

如果我运行 curl http://localhost:8989/turbine.stream，那么我只会得到：

: 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:在设置和运行时我是否漏掉了什么？之前，我尝试通过在单个实例中拥有eureka和turbine服务器来进行管理，但在那种情况下，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。在将eureka和turbine拆分后，我取得了进展，但它仍然不能正常工作。

如果您有任何建议，我将不胜感激。如果您需要更多信息，请告诉我，我可能会忽略一些重要内容。

更新20150209

根据戴夫的建议，我对的文件进行了小修改。现在该文件只包含：

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/

但是这并不能使涡轮机流（turbine.stream）工作。在涡轮服务器意识到eureka服务器中注册的客户端后，它会出现给定的异常：

[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)

我尝试写了 'default' 和 default，但结果不幸相同。

解决方案

感谢 Dave Syer 找到了合适的解决方案。基本上，关键之处在于添加：

turbine:
    clusterNameExpression: new String("default")
将turbine server应用实例中的application.yml文件更新。这看起来有点奇怪，我不相信它会起作用，但它确实可以。现在当我调用我的Hystrix客户端应用程序时，我会在该应用程序提供的hystrix.stream以及Turbine服务器的turbine.stream中获得适当的信息。我目前在turbine服务器上的application.yml如下所示：
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 包含关于 hystrix 客户端（通过它们的 ID）的信息。要将另一个客户端添加到您的 turbine 服务器，您只需将另一个实例 ID 与先前的 ID 以逗号分隔即可。就这样啦 :)

1
我至少可以重现这个问题（请参见https://github.com/spring-cloud-samples/tests/tree/master/turbine中的简单示例）。我下周会更仔细地看一下。也许在那之前Spencer能够发表评论。 - Dave Syer
谢谢你的关注，戴夫。我也会尽力深入挖掘并找到更多帮助解决那个问题的方法。 - Szymon Stepniak
那也可以，但是你需要在流URL中加入“cluster=APPNAME”。 - Dave Syer
我已经成功地让它与 new String('default') 一起工作，但令我困惑的是，提供显式集群似乎根本不起作用。 - Marcin Grzejszczak
你能指导我一下吗？这里是链接：https://stackoverflow.com/questions/61444872/org-springframework-cloud-netflix-hystrix-dashboard-hystrixdashboardconfiguratio - PAA
显示剩余4条评论
2个回答
11

如果我为群集添加一些配置，它可以对我起作用，例如：

turbine:
  appConfig: customers,stores
  clusterNameExpression: new String('default')

Turbine需要知道如何构建“cluster”名称（一组应用程序的聚合关键字）。默认情况下，使用应用程序名称，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（大写的应用程序名称）。

嘿，戴夫，我尝试在 Turbine 服务器的 application.yml 中添加 clusterNameExpression: 'default'，但没有帮助反而导致了异常。我已经更新了初始帖子并提供了所有细节。 - Szymon Stepniak
1
转换以下与编程有关的内容，从英文到中文。只返回翻译后的文本：转义引号似乎是个问题。我做过了。也许尝试 new String('default')？ - Dave Syer
我必须承认，我不相信使用new String('default')可能会改变，但它确实起了作用 :) 感谢@DaveSyer的帮助，现在我可以继续前进并陷入新的麻烦 :) - Szymon Stepniak
在经过数月的寻找后，我找到了答案。;) new String('default') 也适用于我的情况。请考虑编辑原始回答！！ - Christian
@SzymonStepniak：我们应该把application.yml文件放在哪里？是在应用程序代码中还是涡轮服务器中？ - Praveen_Shukla
显示剩余4条评论
1
在我的案例中，我使用7979/mock.stream作为测试涡轮应用程序的客户端。 涡轮检查事件时间（timeOfEvent），因此它只会显示当前日期时间事件。
可以使用以下方法关闭：
turbine.InstanceMonitor.eventStream.skipLineLogic.enabled = false
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