Thursday, November 29, 2012

Running several Grails projects in parallel

If it is needed to run several Grails commands simultaneously (for example on Jenkins) there is big change to get exception like:

19:52:24    [groovyc] org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
19:52:24    [groovyc] /var/lib/jenkins/jobs/test/workspace/src/groovy/com/test/SomeUserDetails.groovy: 3: unable to resolve class org.codehaus.groovy.grails.plugins.springsecurity.GrailsUser

This happens because Grails stores plugin classes and other files in user home directory, so for example, parallel task cleans workspace while other task is running, latter is in trouble of not finding some plugin stuff.
Fortunately, this is easy to solve by specifying working directory for every specific command. There is special property called which can be specified on command line, for example like:

grails clean --non-interactive

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