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Posts Tagged ‘remote’

PostHeaderIcon Remote debug on Mule 2.2.1

Case

You have to run a standalone Mule 2.2.1 in debug mode. Since Mule is launched in standalone, you have to debug a remote application.

Fix

Nice case

  • Edit the %MULE_HOME%/conf/wrapper.conf
  • Uncomment the line:
    wrapper.java.additional.<n>=-Xdebug -Xnoagent -Djava.compiler=NONE -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005
  • Don’t forget to set the parameter <n>

Boring case

In my case (Windows XP SP2, Java 1.5), the Mule refused to start and freezed:

------------------------------------------------------------------------
The JVM is being launched with a debugger enabled and could possibly be
suspended.  To avoid unwanted shutdowns, timeouts will be disabled,
removing the ability to detect and restart frozen JVMs.
------------------------------------------------------------------------
Launching a JVM...
Listening for transport dt_socket at address: 5005
------------------------------------------------------------------------
Startup: Timed out waiting for a signal from the JVM.
The JVM was launched with debug options so this may be because the JVM
is currently suspended by a debugger.  Any future timeouts during this
JVM invocation will be silently ignored.
------------------------------------------------------------------------

The fix this:

  • Download the jar spring-agent here.
  • Move it into %MULE_HOME%/lib/user/
  • Edit the %MULE_HOME%/conf/wrapper.conf
  • add the following block:
  • wrapper.java.additional.3=-javaagent:%MULE_HOME%\lib\user\spring-agent-2.5.3.jar
    wrapper.java.additional.4=-Xdebug
    wrapper.java.additional.5=-Xnoagent
    wrapper.java.additional.6=-Djava.compiler=NONE
    wrapper.java.additional.7=-Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=5005
  • (by the way, even though properties #3 and #5 are inconsistent, don’t mind)
  • launch the Mule
  • In your IDE (Eclipse, NetBeans, IntelliJ IDEA), run debug on localhost:5005