How to know the ID of the task that called my class?

Question

Question

Rodolfo Moreira · Aug 21, 2019

Hello, I have a task created in my task manager, calling my Business Service class, and it's working fine.
But I need to know the ID of the task, I searched within the class %SYS.Task.Definition and found nothing related.

 Class Example.Tasks Extends %SYS.Task.Definition
{

Property BusinessService As %String [ InitialExpression = "Example" ];


Method OnTask() As %Status
{
  SET tSC = $$$OK
  TRY {
  
  SET tSC = ##Class(Ens.Director).CreateBusinessService(..BusinessService,.tBS)
  SET tRequest = ##class(Ens.Request).%New()
  SET tSC = tBS.OnProcessInput(tRequest,.tResponse)
  KILL tBS  
  
  } 
  CATCH  e {
   SET tSC = $System.Status.GetErrorText(e)
  }
  QUIT tSC
}

}

Discussion (7)1

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Robert Cemper · Aug 22, 2019

It's not really clear what you expect by "ID of the task"

You get the actual process id by system variable $JOB.

If you look for the Task Name as seen in Taskmanager then $this.GetTaskName() as %String
Returns the localized name of this task.
see docs of %SYS.Task.Definition

0 0

Lorenzo Scalese · Aug 23, 2019

Hello @Rodolfo Moreira,

For retrieve the task ID, I wrote this :

ClassMethod getTaskId(
    ByRef sc As %Status = {$$$OK},
    className As %String = {..%ClassName(1)}) As %String
{
    Set id = ""
    Set rs = ##class(%Library.ResultSet).%New("%SYS.Task:TaskListDetail")
    Set sc = rs.Execute()
    Quit:$$$ISERR(sc) ""
    While (rs.Next(.sc)) {
        Quit:$$$ISERR(sc)
        if (rs.Get("TaskClass")=className){
            Set id = rs.Get("ID")
            Quit
        }
    }
    Quit id
}

Hope this help you.

Regards.

Edit : modify this code for your needs (ex : return a list of Id, namespace filter...)

0 0

score 0 · Answer 1 · 2019-08-21T15:23:24-04:00

Eduard Lebedyuk · Aug 21, 2019

Please elaborate on what do you want to do with ID.

0 0

score 0 · Answer 2 · 2019-08-21T15:46:32-04:00

We use a REST service to generate the tasks, the ID generated after creating the task is used to link the task to another table with additional parameters.
When executing the task the ID will be used to fetch information from this table.

score 0 · Answer 3 · 2019-08-21T16:33:28-04:00

Eduard Lebedyuk · Aug 21, 2019

You can add property to the task class which references this table.

Would it help?

0 0

score 0 · Answer 4 · 2019-08-24T02:45:57-04:00

Eduard Lebedyuk · Aug 24, 2019

That assumes only one task of the specified type exists.

0 0

score 0 · Answer 5 · 2019-08-24T03:16:12-04:00

Yes Exactly! @Eduard Lebedyuk .

It's just a way.

The code can be easily improved depending your needs (ex : return a list of id, namespace filter)