Question

I need to call a plugin with arguments from a grails event script. How do I do this?

Specifically, I’m trying to hook into eventCompile to call generate-dto --all, sending y to STDIN.

Answer 1

The easiest (and probably slowest) way to do it is to invoke grails in an event handler. This is a bit tricky, since generate-dto generates a compile event, but you can make it conditional on a system property. A second problem is the required input. By convention, grails scripts are all supposed to accept --non-interactive and not prompt the user, but the dto plugin seems to not follow this. A workaround for Posix systems like Linux or MacOS X is to pipe in the yes command as the grails input.

Here’s how I got it working:

// scripts/_Events.groovy
eventCompileStart = { args ->
    if (Boolean.valueOf(System.getProperty('in.generate', "false"))) {
        // skip
    } else {
        ['bash', '-c', 'yes | grails -Din.generate=true generate-dto --all'].execute()
    }
}