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Configuring Mule Stacktraces

By default Mule will filter out some internal class references from stacktraces to produce a more readable output. This behavior can be controlled one of three ways:

  • command-line arguments

  • setting properties in Mule Studio

  • using JMX

Command-Line Arguments

Two command-line properties enable you to control this behavior using -M-DpropertyName:

  • mule.stacktrace.full - when present, Mule will not filter stacktraces. Intended for Mule developers only, end user would probably never need to enable this.

  • mule.stacktrace.filter - a comma-separated list of packages and/or classes to remove from the stacktraces (matched via string.startsWith() )

Setting Properties in Mule Studio

In Studio, you can set the same properties specified above to instruct Mule to provide either unfiltered stacktraces or to configure a particular filter of packages or classes that should be removed. To adjust these settings, open your mule-project.xml file and define environment variables to specify the behavior you want. In the example below, the mule.stacktrace.full* property is set to *true.


Using JMX

The Configuration MBean now exposes two new options.

  • FullStackTrace - same as above

  • StackTraceFilter - same as above

These settings are shared between apps even though each app has its own Configuration MBean. That means that modifying it in one app will affect others.