如何捕获Mule foreach范围中的异常,但是要保持进程？

2019年8月4日 194次阅读

我是Mule ESB的新手.我创建了一个循环遍历订单列表的简单流程,并调用Magento API逐个更新订单状态.我的问题是,如果foreach范围中发生任何异常,整个过程最重要.我尝试使用异常策略来捕获异常,它确实捕获了异常.但是如何恢复这个过程呢？我没有找到谷歌搜索的太多信息.也许我在流程上做错了.我们如何正常处理骡子？

这是我在xml中的流程.

    <flow name="Update_Magento_Order_Status_AU" doc:name="Update_Magento_Order_Status_AU" initialState="started">
    <poll doc:name="Poll">
        <fixed-frequency-scheduler frequency="10" timeUnit="MINUTES"/>
        <jdbc-ee:outbound-endpoint exchange-pattern="request-response" queryKey="GET_ORDERS_BY_STATUS_QUERY" queryTimeout="-1" connector-ref="DSEDatabase" doc:name="Get Orders By Status"/>
    </poll>
    <flow-ref name="ProcessOrderStastusUpdate" doc:name="Process Order Status Update"/>
</flow>
<flow name="ProcessOrderStastusUpdate" doc:name="ProcessOrderStastusUpdate">
    <foreach collection="#[payload]" doc:name="For Each">
        <component doc:name="Set Magento Order Status for Update">
            <singleton-object class="com.dse.esb.component.OrderStatusMapperComp">
                <property key="as400OrderStatuses" value="${as400.orderstatuses}"/>
                <property key="magentoOrderStatuses" value="${magento.orderStatuses}"/>
            </singleton-object>
        </component>
        <logger message="About to update Magento Order Status" level="INFO" doc:name="Logger"/>
        <magento:add-order-comment config-ref="Magento" comment="Updated by Mule ESB with AS400 order status: #[payload.TRNSTS]" orderId="#[payload.EPGORDNBR]" status="#[flowVars['magentoOrderStatus']]" doc:name="Update Magento Order Status"/>
    </foreach>
    <choice-exception-strategy doc:name="Choice Exception Strategy">
        <catch-exception-strategy doc:name="default">
            <logger message="Handle default exception" level="INFO" category="==============&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;" doc:name="Logger"/>
        </catch-exception-strategy>
    </choice-exception-strategy>
</flow>

最佳答案 使用私有流为for-each的内容提供自己的异常策略.异常将在私有流中处理,父流应该能够继续.就像是：

<flow name="ProcessOrderStastusUpdate">
   <foreach collection="#[payload]" doc:name="For Each">
      <flow-ref name="privateFlow" />    
   </foreach>
</flow>

<flow name="privateFlow">
   <component doc:name="Set Magento Order Status for Update">
      <singleton-object class="com.dse.esb.component.OrderStatusMapperComp">
             <property key="as400OrderStatuses" value="${as400.orderstatuses}"/>
             <property key="magentoOrderStatuses" value="${magento.orderStatuses}"/>
      </singleton-object>
   </component>
   <logger message="About to update Magento Order Status" level="INFO" doc:name="Logger"/>
   <magento:add-order-comment config-ref="Magento" comment="Updated by Mule ESB with AS400 order status: #[payload.TRNSTS]" orderId="#[payload.EPGORDNBR]" status="#[flowVars['magentoOrderStatus']]" doc:name="Update Magento Order Status"/>


    <choice-exception-strategy doc:name="Choice Exception Strategy">
        <catch-exception-strategy doc:name="default">
            <logger message="Handle default exception" level="INFO" category="==============&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;" doc:name="Logger"/>
        </catch-exception-strategy>
    </choice-exception-strategy>
</flow>
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