Question

我通过Atomikos和JMS使用Spring Integration和JTA支持绑定到入站和出站的不同Webshpere MQ。流程如下：

JMS入站通道适配器收到消息
一些转变
JMS出站通道适配器到输出队列
发生错误时，errorChannel收到消息
异常类型路由器将未处理的错误路由到自定义重新抛出服务，并将处理后的错误路由到将其发送到2个错误队列的收件人列表路由器

我的问题是我希望事务提交，即使消息在errorChannel下游（在处理的异常情况和错误队列上）。据我所知，只有在重新抛出Exception时才会发生回滚（这就是我重新抛出未处理的异常的原因），但在我的情况下，一旦消息到达errorChannel，事务就会回滚（在它被路由之前）其它地方）。

我做错了什么？

配置如下。

<jms:inbound-channel-adapter id="jms-in"
                             destination="input-queue"
                             connection-factory="inConnectionFactory"
                             channel="edi-inbound"
                             acknowledge="transacted">
    <poller max-messages-per-poll="${process.jms.inbound.poll.messages-per-poll:1}"
            fixed-rate="${process.jms.inbound.poll.rate-millis:60000}"
            >
        <transactional timeout="${process.tx.timeout-sec:60}"/>
    </poller>
</jms:inbound-channel-adapter>
<channel id="edi-inbound"/>

<chain input-channel="edi-inbound" output-channel="edi-transformation-chain">
    <object-to-string-transformer/>
    <service-activator ref="inbound" method="service"/>
</chain>

<!-- edifact transformation flow -->
<chain input-channel="edi-transformation-chain" output-channel="outbound-message-compose">
    <transformer ref="edi2xml-converter"/>
    <transformer ref="xml-mapper"/>
</chain>




<chain input-channel="outbound-message-compose" output-channel="outbound-channel">
    <service-activator ref="outbound-message-composer" />
</chain>

<channel id="outbound-channel">
    <interceptors>
        <beans:ref bean="outbound-interceptor" />
    </interceptors>
</channel>

<recipient-list-router input-channel="outbound-channel">
    <recipient channel="file-outbound"/>
    <recipient channel="queue-outbound"/>
</recipient-list-router>



<channel id="queue-outbound"/>
<jms:outbound-channel-adapter id="jms-out" destination="output-queue" channel="queue-outbound" connection-factory="outConnectionFactory"/>



<channel id="file-outbound"/>
<file:outbound-channel-adapter id="file-outbound"
                                   directory="${output.directory}"
                                   filename-generator-expression="headers['${application.header.key.messageid}'] + '_' + new java.util.Date().getTime() + '.xml'"
                                   delete-source-files="true" />




<!-- notification outbound flow -->
<channel id="errorChannel">
    <interceptors>
        <wire-tap channel="logger"/>
    </interceptors>
</channel>
<logging-channel-adapter id="logger" level="INFO"/>

<exception-type-router input-channel="errorChannel" default-output-channel="unhandled-error-channel">
    <mapping exception-type="aero.aice.apidcm.integration.exception.HandledException" channel="error-notification-channel" />
</exception-type-router>

<recipient-list-router input-channel="error-notification-channel">
    <recipient channel="queue-outbound-error"/>
    <recipient channel="queue-inbound-error"/>
</recipient-list-router>

<chain input-channel="queue-outbound-error">
    <service-activator ref="outbound-error-composer" />
    <jms:outbound-channel-adapter id="jms-out-error"
                                  destination="error-output-queue"
                                  connection-factory="outConnectionFactory"
                                  session-transacted="true"/>
</chain>

<chain input-channel="queue-inbound-error">
    <service-activator ref="error-notif-composer" />
    <jms:outbound-channel-adapter id="jms-in-error"
                                  destination="error-input-queue"
                                  connection-factory="outConnectionFactory"
                                  session-transacted="true"/>
</chain>


<channel id="unhandled-error-channel" />
<service-activator ref="exception-rethrow" input-channel="unhandled-error-channel"/>

只是要完成，当错误通道上的tx回滚时，两个错误队列在任何情况下都会收到消息（好像出站适配器不参与事务），而正常流程的tx（当没有时）发生错误）完美无缺。

Answer 1

这是正确的。

因为您使用Polling Inbound Channel Adapter。它的逻辑就像：

AbstractPollingEndpoint.this.taskExecutor.execute(() -> {
  ...
                    if (!Poller.this.pollingTask.call()) {
                        break;
                    }
   ...
                catch (Exception e) {
                    if (e instanceof RuntimeException) {
                        throw (RuntimeException) e;
                    }
                    else {
                        throw new MessageHandlingException(new ErrorMessage(e), e);
                    }
                }
            }
        });

TX是pollingTask代理的一部分，作为AOP TransactionInterceptor。

errorChannel是this.taskExecutor的{{1}}的一部分。因此，只有当我们从ErrorHandler中抛出异常时，我们才能到达errorChannel。因为我们在那里有TX，所以它当然会被拉回来。

我的观点是：pollingTask中的错误处理过程是在TX之外完成的。

考虑切换到Polling Inbound Channel Adapter。

当消息进入errorChannel

1 个答案: