向 mule 记录器添加额外信息

Adding extra information to mule loggers

我想为每个请求添加一些关联 ID,并自动将其显示在日志消息中。如何自动或多或少地向 <logger /> 及其变体添加额外值?

我试过:

  1. Spring aop 切入 LoggerMessageProcessor.process(MuleEvent event),但事件不包含记录的消息
  2. Spring aop 切入 LoggerMessageProcessor.setMessage(String msg) 将包含消息,但由于某种原因未调用该方法
<flow name="add-correlation-id">
        <scripting:component doc:name="Script">
        <scripting:script engine="groovy">
            <![CDATA[
                String correlationId=message.getInboundProperty('x-request-id');
                if(correlationId==null || correlationId.length() == 0){
                    correlationId = java.util.UUID.randomUUID().toString();
                }
                message.setSessionProperty('requestID',correlationId);
                org.apache.log4j.MDC.put('x-request-id',correlationId);
            ]]>
        </scripting:script>
    </scripting:component>
</flow>