Trigger plugin modules enable you to schedule when your Job Plugins are scheduled to run Confluence.

• For more information about plugins in general, read Confluence Plugin Guide.
• To learn how to install and configure plugins (including macros), read Installing and Configuring Plugins Manually.
• For an introduction to writing your own plugins, read Writing Confluence Plugins

Trigger Plugin Module

The Trigger plugin module schedules Jobs within a plugin. Triggers are one of two types:

• cron - jobs are scheduled using cron syntax
• simple - jobs are scheduled to repeat every X seconds

Here is an example atlassian-plugin.xml fragment containing a Job with it's corresponding Trigger module using a cron-style expression (for reference, this expression will execute the job with key 'myJob' every minute):

<atlassian-plugin name="Sample Component" key="confluence.extra.component">
    ...
    <job key="myJob"
          name="My Job"
          class="com.example.myplugin.jobs.MyJob" />
    <trigger key="myTrigger" name="My Trigger">       
        <job key="myJob" />       
        <schedule cron-expression="0 * * * * ?" />     
    </trigger>
    ...
</atlassian-plugin>

For the <trigger> element:

• the name attribute represents how this component will be referred to in the Confluence interface.
• the key attribute represents the internal, system name for your Trigger.
• the class attribute represents the class of the Job to be created. The class must have a no-argument constructor, or it will not be able to be instantiated by Confluence.

For more details on the cron expressions, see the Quartz documentation for CronTrigger.

Here is another example, this time using a simple trigger that repeats every 3600000 milliseconds (1 hour) and will only repeat 5 times:

...
    <trigger key="myTrigger" name="My Trigger">
        <job key="myJob" />
        <schedule repeat-interval="3600000" repeat-count="5" />
     </trigger>    
...