Question

我已配置Camel路由以将文件从目录传输到ActiveMQ队列。

public class DemoHelperRouteBuilder extends RouteBuilder {

@Override
public void configure() throws Exception {


    onException(JmsException.class, ConnectException.class)
    .routeId("ConnectionExceptionRoute")
    .handled(true)
    .log(LoggingLevel.ERROR, "Connection Error")
    .maximumRedeliveries(5)
    .redeliveryDelay(1000)
    .backOffMultiplier(2)
    .useExponentialBackOff()
    .maximumRedeliveryDelay(60000)
    .log(LoggingLevel.DEBUG, "Rolling back!")
    .rollback();



    errorHandler(defaultErrorHandler()
            .maximumRedeliveries(20).redeliveryDelay(7000).retryAttemptedLogLevel(LoggingLevel.INFO));

    from("file:{{directory.property}}?delete=true&readLock=markerFile&delay=5000")
    .log("Passing File")
    .transacted("PROPAGATION_REQUIRED")
    .setHeader("FILE_TYPE", constant("MYTYPE"))
    .setHeader("MSG_ID", constant("55"))
    .to("activemq:{{MY.QUEUE}}"); 

}

}

我的Camel上下文文件如下所示：

<!-- This is the default behavior. -->
<bean id="PROPAGATION_REQUIRED" class="org.apache.camel.spring.spi.SpringTransactionPolicy">
    <property name="transactionManager" ref="jmsTransactionManager"/>
</bean>

<bean id="PROPAGATION_REQUIRES_NEW" class="org.apache.camel.spring.spi.SpringTransactionPolicy">
    <property name="transactionManager" ref="jmsTransactionManager"/>
    <property name="propagationBehaviorName" value="PROPAGATION_REQUIRES_NEW"/>
</bean>


<bean id="activemq" class="org.apache.activemq.camel.component.ActiveMQComponent">
    <property name="connectionFactory" ref="jmsConnectionFactory"></property>
    <property name="transacted" value="true"/>
    <property name="transactionManager" ref="jmsTransactionManager"/>
</bean>

<bean id="jmsConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
    <property name="brokerURL" value="${jms.broker.url}"/>
    <property name="redeliveryPolicy">
        <bean class="org.apache.activemq.RedeliveryPolicy">
            <property name="maximumRedeliveries" value="-1" />
            <property name="redeliveryDelay" value="10000" />
        </bean>
    </property>
</bean>

我在应用程序中的各种不同端点之间有几条其他路由，这些路由需要重新传递配置并且行为符合预期。但是，此特定路由类型（从文件到队列）似乎不遵循我已配置的任何重新传递策略。当我关闭ActiveMQ代理时，路由会尝试每6秒重新传输一次文件。：

10：54：09,979 |信息| C_demo％5 | route6 | 105 - org.apache.camel.camel-core - 2.10.0.redhat-60024 |传递文件

10：54：11,072 |警告| C_demo％5 | TransactionErrorHandler | 105 - org.apache.camel.camel-core - 2.10.0.redhat-60024 |事务回滚（0x5757baa8）redelivered（unknown）for（MessageId：ID-3668-1385561154291-4-1 on ExchangeId：ID-3668-1385561154291-4-2）catch：无法创建JMS事务;嵌套异常是javax.jms.JMSException：无法连接到代理URL :.原因：java.net.ConnectException：连接被拒绝：连接

10：54：11,072 |警告| C_demo％5 | GenericFileOnCompletion | 105 - org.apache.camel.camel-core - 2.10.0.redhat-60024 |回滚文件策略：org.apache.camel.component.file.strategy.GenericFileDeleteProcessStrategy@789d315e for file：GenericFile []

10：54：16,088 |信息| C_demo％5C | route6 | 105 - org.apache.camel.camel-core - 2.10.0.redhat-60024 |传递文件

10：54：17,088 |警告| C_demo％5C | TransactionErrorHandler | 105 - org.apache.camel.camel-core - 2.10.0.redhat-60024 |捕获的事务回滚（0x5757baa8）重新传递（未知）（在ExchangeId上为MessageId：ID-3668-1385561154291-4-3：ID-3668-1385561154291-4-4）：无法创建JMS事务;嵌套异常是javax.jms.JMSException：无法连接到代理URL :.原因：java.net.ConnectException：连接被拒绝：连接

10：54：17,088 |警告| C_demo％5 | GenericFileOnCompletion | 105 - org.apache.camel.camel-core - 2.10.0.redhat-60024 |回滚文件策略：org.apache.camel.component.file.strategy.GenericFileDeleteProcessStrategy@789d315e for file：GenericFile []

我查看了transactional client documentation和其他网站，但一直无法找到解决方案。如果我错过了告诉我如何解决这个问题的事情，我道歉。任何有助于解决此问题的指针或文档将不胜感激。谢谢！

Answer 1

我已经能够通过稍微改变路线来配置路线：

public class DemoHelperRouteBuilder extends SpringRouteBuilder{

@Override
public void configure() throws Exception {


onException(JmsException.class, ConnectException.class)
.routeId("ConnectionExceptionRoute")
.handled(true)
.log(LoggingLevel.ERROR, "Connection Error")
.maximumRedeliveries(25)
.redeliveryDelay(1000)
.backOffMultiplier(2)
.useExponentialBackOff()
.maximumRedeliveryDelay(60000)
.log(LoggingLevel.DEBUG, "Rolling back!")
.rollback();



 errorHandler(transactionErrorHandler()
    .maximumRedeliveries(5).redeliveryDelay(60000).retryAttemptedLogLevel(LoggingLevel.INFO)); 

from("file:{{directory.property}}?delete=true&readLock=markerFile&delay=5000")
.log("Passing File")
.transacted("PROPAGATION_REQUIRED")
.setHeader("FILE_TYPE", constant("MYTYPE"))
.setHeader("MSG_ID", constant("55"))
.to("activemq:{{MY.QUEUE}}");

}

主要变化来自骆驼背景：

<bean id="JMS_TRANSACTED" class="org.apache.camel.spring.spi.SpringTransactionPolicy">
    <property name="transactionManager" ref="jmsTransactionManager"/>
</bean>
<bean id="PROPAGATION_REQUIRED" class="org.apache.camel.spring.spi.SpringTransactionPolicy"> 
            <property name="transactionManager"> 
                   <osgi:reference interface="org.springframework.transaction.PlatformTransactionManager" /> 
            </property> 
            <property name="propagationBehaviorName" value="PROPAGATION_REQUIRED" /> 
</bean> 

<bean id="PROPAGATION_REQUIRES_NEW" class="org.apache.camel.spring.spi.SpringTransactionPolicy">
    <property name="transactionManager" ref="jmsTransactionManager"/>
    <property name="propagationBehaviorName" value="PROPAGATION_REQUIRES_NEW"/>
</bean>

<bean id="jmsConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory">
<property name="brokerURL" value="${jms.broker.url}"/>
<property name="redeliveryPolicy">
    <bean class="org.apache.activemq.RedeliveryPolicy">
        <property name="maximumRedeliveries" value="-1" />
        <property name="redeliveryDelay" value="10000" />
    </bean>
</property>
</bean>

这些更改允许我配置路由尝试将文件重新发送到队列的频率。我能够使用这些链接获得帮助：

谢谢！

Answer 2

从Error handling in Camel我了解Camel不处理事务错误。它应该通过支持系统或Transaction ErrorHandler

来完成

如何在文件到队列Camel路由上配置重新传递策略？

2 个答案: