Error on async job

Question

I\'m trying to create an async task that will not block the request. The user make the request, the task will start, and the controller will render \"Job is running...\", this i

Answer 1

In my case, just returning a promise worked.

MyService.groovy

import static grails.async.Promises.*
def getAsync(){
    Promise p = task {
    //Long running task
            println 'John doe started digging a hole here.'
            Thread.sleep(2000)
            println 'John doe working......'
            return 'Kudos John Doe!'
        }
        p.onError { Throwable err ->
            println "Poor John"+err
        }
        p.onComplete { result ->
            println "Congrats." +result
        }

        println 'John Doe is doing something here.'
        return p
}