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The Jabber plugin is a tiny Grails plugin for interacting with Jabber services (such as Google talk). You can send messages to Jabber from all your controllers and services, and you can optionally registered a listener in one of your service classes to be notified of incoming messages.

There is a little configuration required in your /conf/Config.groovy file. Add the following section and point it to your jabber server of choice:

   chat {
        serviceName = "local.decaf" 
        host = "localhost" 
        port = 5222
        username = "glen" 
        password = "password" 
    }

If you’re using it with Google Talk, you’ll want your settings to be something like:

chat {
    serviceName = "gmail.com" 
    host = "talk.google.com" 
    port = 5222
    username = "yourid@gmail.com" 
    password = "your_password" 
}

Once that’s in, you can happily invoke sendJabberMessage(userId, content) from any of your controllers or services:

sendJabberMessage("glen@decaf.local", "Just a tester....")

If you’d like to listen for incoming Jabber messages, you need to add an ‘expose’ list similar to the JMS and Remoting plugin (which I used as the sample template for my plugin) to one of your service classes.

class DemoService {

    static expose = [ 'jabber' ]

    def onJabberMessage = {msg ->

        println "Eeek a message!!! From ${msg.from} with body ${msg.body}" 

    }
}

And you’re off and running!