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我正在尝试将 WSO2 CEP 服务器连接到 WSO2 消息代理服务器。

我创建了一个 jndi.properties 文件:

connectionfactory.TopicConnectionFactory = amqp://admin:admin@clientid/carbon?brokerlist='tcp://192.168.11.2:5673'
topic.testTopic = testTopic

输入事件适配器:

<?xml version="1.0" encoding="UTF-8"?>
<inputEventAdaptor name="MBJMSInputAdaptor" statistics="enable"
  trace="enable" type="jms" xmlns="http://wso2.org/carbon/eventadaptormanager">
  <property name="java.naming.provider.url">repository/conf/jndi.properties</property>
  <property name="transport.jms.SubscriptionDurable">false</property>
  <property name="java.naming.factory.initial">org.wso2.andes.jndi.PropertiesFileInitialContextFactory</property>
  <property name="transport.jms.ConnectionFactoryJNDIName">TopicConnectionFactory</property>
  <property name="transport.jms.DestinationType">topic</property>
</inputEventAdaptor>

流定义:

<streamDefinitions xmlns="http://wso2.org/carbon/databridge">
  <streamDefinition>
    {
      "name":"testStream",
      "version":"1.0.0",
      "payloadData":[
        {"name":"id","type":"INT"},
        {"name":"name","type":"STRING"}
      ]
    }
  </streamDefinition>
</streamDefinitions>

和一个事件构建器:

<?xml version="1.0" encoding="UTF-8"?>
<eventBuilder name="testBuilder" statistics="enable" trace="enable" xmlns="http://wso2.org/carbon/eventbuilder">
  <from eventAdaptorName="MBJMSInputAdaptor" eventAdaptorType="jms">
    <property name="topic">testTopic</property>
  </from>
  <mapping customMapping="enable" type="json">
    <property>
      <from jsonPath="id"/>
      <to name="id" type="int"/>
    </property>
    <property>
      <from jsonPath="name"/>
      <to name="name" type="string"/>
    </property>
  </mapping>
  <to streamName="testStream" version="1.0.0"/>
</eventBuilder>

不幸的是,WSO2 CEP 服务器没有收到来自 WSO2 消息代理服务器的消息,并抛出以下异常:

[2014-11-28 13:00:00,226] INFO - {JMSEventAdaptorType} JMS 输入事件适配器加载侦听器 在 java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java
的线程“Thread-29”java.lang.NullPointerException 中出现异常
:333)
在 java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:988)
在 org.wso2.carbon.event.input.adaptor.jms.JMSEventAdaptorType.createJMSAdaptorListener(JMSEventAdaptorType.java:291)
在 org.wso2。 carbon.event.input.adaptor.jms.JMSEventAdaptorType.tryStartAdaptor(JMSEventAdaptorType.java:262)
at org.wso2.carbon.event.input.adaptor.jms.internal.ds.JMSEventAdaptorServiceHolder.loadLateStartEventAdaptors(JMSEventAdaptorServiceHolder.java:66)
在 org.wso2.carbon.event.input.adaptor.jms.internal.ds.JMSEventAdaptorServiceHolder$1.run(JMSEventAdaptorServiceHolder.java:43)
在 java.lang.Thread.run(Thread.java:745)

你能帮我调试这个异常吗?

4

1 回答 1

3

如果您想调试代码,那么您可以从下面的位置 [1] 签出源代码。但我认为下面的博客 [2] 将帮助您实现用例。

[1] https://svn.wso2.org/repos/wso2/carbon/platform/branches/turing/components/event-stream/event-input-adaptor/org.wso2.carbon.event.input.adaptor.jms /1.0.1

[2] http://sajithr.blogspot.com/2014/04/sample-on-using-wso2-mb-with-wso2-cep.html

于 2014-12-04T17:18:24.263 回答