Gradle - configure subprojects based on plugin presence

Question

I am fighting with a fairly simple gradle problem but despite searching I cannot find a solution. Very simple, in a multi project build, I need configure some subproject based on the plugins they load. So If sub project has plugin 'war' or 'ear' do this.. I have tried the following without success:

subprojects {
    if (it.plugins.hasPlugin('war') || (it.plugins.hasPlugin('ear') {
        apply plugin: 'my super special plugin'
        ....
        ....
    }
}

The above never apply plugin: 'my super special plugin'

Any suggestion? Thanks

Answer 1

Gradle executes subprojects closure before evaluating build.gradle from subprojects. Therefore, there are no information about plugins from build.gradle at this point. To execute some code after evaluation of the subproject/build.gradle you should use ProjectEvaluationListener. For example:

subprojects {
    afterEvaluate {
      if (it.plugins.hasPlugin('war') || (it.plugins.hasPlugin('ear') {
          it.plugins.apply 'my super special plugin'
          ....
          ....
      }
    }
}

Also note about it.plugins.apply 'my super special plugin' instead of apply plugin: 'my super special plugin'

Another option is to use shared common.gradle wich will configure subprojects. This shared gradle file may be included in the subproject/build.gradle by using apply from: '../common.gradle' in proper place.