A very simple grails quartz2 monitor

index.gsp

<h3>Jobs</h3>
Current time:${new Date()}
<g:form controller="quartz">
<g:actionSubmit action="pauseAll" value="Pause all Jobs"/>
<g:actionSubmit action="resumeAll" value="Resume all Jobs"/>
</g:form>
<table>
	<thead>
		<tr>
			<th>JobKey</th>	
			<th>State</th>	
			<th>FireTime</th>	
			<th>NextFireTime</th>	
			<th>Last run</th>	
			<th>Actions</th>	
		</tr>
	</thead>
	<tbody>	
<g:each in="${jobs.keySet()}" var="${jobKey}">
<g:set var="job" value="${jobs[jobKey]}" />
<g:each in="${job.triggers}" var="${trigger}">
<tr>
	<td>${(jobKey.toString().split(/\./) as List).last()}</td>	
	<td>${trigger.state}</td>	
	<td>${job.executionContext?.fireTime}</td>	
	<td>${trigger.detail.nextFireTime}</td>	
	<td>${job.executionContext?.jobRunTime}</td>	
	<td><g:form controller="quartz">
		<g:hiddenField name="jobKey" value="${jobKey.name}" />
		<g:hiddenField name="groupName" value="${jobKey.group}" />		
		<g:actionSubmit action="triggerJob" value="Trigger job" />
		<g:actionSubmit action="pauseJob" value="Pause job" />
	<g:actionSubmit action="resumeJob" value="Resume job" />
	</g:form></td>
</tr>
</g:each>
</g:each>
	</tbody>
</table>

QuartzController.groovy

package com.tirant.tolmex.backend.edicion.controllers.admin

import grails.plugins.springsecurity.Secured

@Secured(["ROLE_ADMIN"])
class QuartzController {

	static layout = 'admin'
	
	
   def quartzScheduler
	
   def index = { 
	def jobGroups = quartzScheduler.getJobGroupNames();
	def currentlyExecutingJobs = quartzScheduler.getCurrentlyExecutingJobs()
	def currentlyExecutingJobsMap = currentlyExecutingJobs.inject([:],{ accum, item ->
		accum[item.jobDetail.key] = item
		accum
	}) 
	def jobs = [:]
	for (String groupName:jobGroups)
	{
	     def jobKeys = quartzScheduler.getJobKeys(org.quartz.impl.matchers.GroupMatcher.groupEquals(groupName));
	     for (def jobKey:jobKeys)
	     {
			def triggers = quartzScheduler.getTriggersOfJob(jobKey).collect({ trigger ->
				[detail:trigger,state:quartzScheduler.getTriggerState(trigger.key)]
			})
			
			jobs[jobKey] = [triggers:triggers, groupName:groupName, executionContext: currentlyExecutingJobsMap[jobKey] ]
	     }
	}
	[jobs:jobs]
   }


   def pauseAll = {
	quartzScheduler.pauseAll()
	redirect(action:'index')
   }

   def pauseJob = {
	quartzScheduler.pauseJob(new org.quartz.JobKey(params.jobKey,params.groupName))
	redirect(action:'index')
   }

   def resumeAll = {
	quartzScheduler.resumeAll()
	redirect(action:'index')
   }

   def resumeJob = {
	quartzScheduler.resumeJob(new org.quartz.JobKey(params.jobKey,params.groupName))
	redirect(action:'index')
   } 

   def triggerJob = {
   	quartzScheduler.triggerJob(new org.quartz.JobKey(params.jobKey,params.groupName),null)
	redirect(action:'index')
   }
}