I have been facing a problem of running configurable number of instances of the same job to consume the traffic that was varying over time. In order to dynamically create an instance of a job and run it immediately, I googled and found some interesting facts like each trigger is fired with a new instance of the job. We can create any no. of trigger for a job.<\/p>\n
Here is a sample code to dynamically create a new trigger for a job and scheduling it to run immediately…
\n[groovy]
\n\/\/import org.codehaus.groovy.grails.plugins.quartz.GrailsTaskClassProperty as GTCP
\n\/\/import org.codehaus.groovy.grails.plugins.quartz.GrailsTaskClass
\n\/\/import org.quartz.Trigger
\n\/\/import org.quartz.SimpleTrigger
\n\/\/ def quartzScheduler \/*inject qartzScheduler bean*\/<\/p>\n
GrailsTaskClass tc=grailsApplication.taskClasses.find{it.fullName==’myPackage.MySampleJob’}
\n\/\/ fully packaged name of the Job. There may be better way to find the Grails Job.<\/p>\n
String triggerName=’mytrigger’+System.currentTimeMillis() \/\/ unique trigger name<\/p>\n
Trigger trigger = new SimpleTrigger(triggerName,
\n GTCP.DEFAULT_TRIGGERS_GROUP,
\n tc.getFullName(),
\n tc.getGroup(),
\n new Date(),
\n null, 0, 1000)
\n\/*
\nCreated a simple trigger using constructor :<\/p>\n
SimpleTrigger(String name, String group, String jobName, String jobGroup, Date startTime, Date endTime, int repeatCount, long repeatInterval)
\n*\/<\/p>\n
trigger.jobDataMap.putAll([‘triggerName’:triggerName, ‘myData’:1000]) <\/p>\n
\/*
\npassing map to the trigger that can be accessed inside execute() method of the job using context.mergedJobDataMap
\n*\/<\/p>\n
quartzScheduler.scheduleJob(trigger) \/\/execute the job for this trigger.
\n[\/groovy]
\nThe above sample code can be used to create any number of triggers that are executed with a new instance of the specified Quartz Job.<\/p>\n
Helpful Links :<\/p>\n
1.
\n2. Quartz Plugin source code(QuartzGrailsPlugin.groovy)<\/p>\n
Hope it helps you.<\/p>\n
~~~~Bhagwat Kumar~~~~
\nbhagwat@intelligrape.com
\nIntelliGrape Software<\/p>\n","protected":false},"excerpt":{"rendered":"
I have been facing a problem of running configurable number of instances of the same job to consume the traffic that was varying over time. In order to dynamically create an instance of a job and run it immediately, I googled and found some interesting facts like each trigger is fired with a new instance […]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"iawp_total_views":53,"footnotes":""},"categories":[7],"tags":[279,148,280],"class_list":["post-1086","post","type-post","status-publish","format-standard","hentry","category-grails","tag-dynamic-trigger","tag-quartz-job","tag-schedulejob"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t