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Grails 2.5.0 debug in IntelliJ IDEA

Published: Tuesday, May 19, 2015 • 🏷️ groovy • grails

I’ve been using Grails v.2.5.0 and tried to debug Grails app via traditional Intellij IDEA 14 Debug with no success.

To be short: using IDEA Debug allows us debug Grails build system only. Why?

Forked execution is configured via the grails-app/conf/BuildConfig.groovy file. The following is the default configuration:

grails.project.fork = [
 ...
   run: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256], // configure settings for the run-app JVM
 ...
]

Based on this we should create two IDEA Run/Debug Configurations:

  • Create simple Grails Run configuration with --debug-fork parameter: run-app --debug-fork. E.g.

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And run this Configuration. We should get the next output 

Listening for transport dt_socket at address: 5005
|Server running. Browse to http://localhost:8080/TekDays

This socket address will be used for Remote connection.

  • Create IDEA Remote Configuration (Run/Debug Configuration -> Remote)

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And run this Configuration. Now, we are able to debug our application.

The main idea is that we should have two running Configurations!

References