Event Wait Task

Event-Wait Tasks

The Event-Wait task waits for a predefined event or a user-defined event. A predefined event is a file-watch event. When you use the Event-Wait task to wait for a predefined event, you specify an indicator file for the Integration Service to watch. The Integration Service waits for the indicator file to appear. Once the indicator file appears, the Integration Service continues running tasks after the Event-Wait task.

You can assign resources to Event-Wait tasks that wait for predefined events. You may want to assign a resource to a predefined Event-Wait task if you are running on a grid and the indicator file appears on a specific node or in a specific directory. When you assign a resource to a predefined Event-Wait task and the Integration Service is configured to check resources, the Load Balancer distributes the task to a node where the required resource is available.

Note: If you use the Event-Raise task to trigger the event when you wait for a predefined event, you may not be able to successfully recover the workflow.

You can also use the Event-Wait task to wait for a user-defined event. To use the Event-Wait task for a user-defined event, specify the name of the user-defined event in the Event-Wait task properties. The Integration Service waits for the Event-Raise task to trigger the user-defined event. Once the user-defined event is triggered, the Integration Service continues running tasks after the Event-Wait task.

Event Wait:

1. In the Workflow Designer (First you need to create a session).

2. From Menu bar select Workflows à Click Create

 

3. Select Event Wait Task for the task type.

 Enter a name for the Event Wait task name <InputFileWatcher>.

Click Create. Then click Done. 

Now, create a link between tasks Start, InputFileWatcher and s_m_employee_file2xml by using link task. 

The Workflow Designer creates and adds the Event Wait task to the workflow.

4. Double-click the Event Wait task to open the Edit Task dialog box a Go to Properties Tab

 

User Defined Event: A user-defined event is triggered by the Event-Raise task. To wait for a user-defined event, you must first use an Event-Raise task to trigger the user-defined event.

Event Name: Event name of the waiting instance.

Enable Past Events: Enable past events

Filewatch name: Path and File Name of the event for the instance waiting (defined at Event Tab)

Delete Filewatch file: Delete the file watch once the instance complete.

5. Go to Event Tab: To define file watch path and file name.

 

Back to Properties tab after file watcher defined.

 

Note: If you want to delete readyfile/event file once the event instance completed please select check box "Delete Filwatch file"

Click on Apply and OK.

6. Save the workflow and Run the workflow.

Note:  The session will not execute until you place file watcher as defined in event tab.