如何在Mule的私有流中获取呼叫者流名称 [英] How to get caller flow name in private flow in Mule

问题描述

我有一个私人流程，使用flow-ref由许多公共流程共享.我正在寻找使用Mule 3.3.0使用MEL在私有流中获取呼叫者流名称的方法.有可能吗?

I've a private flow which is shared by lot of public flows using flow-ref. I'm looking to get the caller flow name in private flow, using MEL, using Mule 3.3.0. Is that possible?

推荐答案

当通过flow-ref调用私有流时，M子不会向事件添加任何属性，因此您的选择是:

Mule doesn't add any property to an event when it invokes a private flow via flow-ref so your options are:

• 在调用私有流之前，使用<set-variable>使用流名称设置变量，并使用#[flowVars.yourVariableName]读取该变量.
• 使用呼叫流的入站端点作为告诉谁的方法.您可以使用#[message.inboundProperties.MULE_ENDPOINT]获取入站端点URL，或者使用#[message.inboundProperties.MULE_ORIGINATING_ENDPOINT]获取其名称.
• 创建自定义MessageProcessor "rel =" noreferrer> FlowConstructAware :这样，您将获得流名称，并能够将其自动设置为MuleEvent消息上的调用变量.在所有父流程中，在flow-ref之前，将此元素与custom-processor元素一起使用.

• Use <set-variable> to set a variable with the flow name before calling the private flow and read this variable with #[flowVars.yourVariableName].
• Use the inbound endpoint of the calling flow as the way to tell who's calling. You can get either the inbound endpoint URL with #[message.inboundProperties.MULE_ENDPOINT] or its name with #[message.inboundProperties.MULE_ORIGINATING_ENDPOINT].
• Create a custom MessageProcessor that implements FlowConstructAware: that way you'll get the flow name and will be able to automatically set it as an invocation variable on the MuleEvent's message. Use this with a custom-processor element in all your parent flows, before the flow-ref.

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