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Antonio Garcia ... · Jan 29, 2018

Disable Service/Process/Operation from a function?

#Ensemble

Hi,

I am working on a custom service that reads from a file and import content into a global. The problem is that global is also used by other processes. I have been trying to find any way to stop/disable a process from cache code so after reading the file, process is stopped, global updated and then process is restored. But I could not find anything, just to start/stop the whole production 

Do ##class(Ens.Director).StopProduction()

Any ideas if this is something that can be done in ensemble?

Thanks

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Chris Thompson · Jan 29, 2018

Look into ##class(Ens.Director).EnableConfigItem

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Antonio Garcia ... · Jan 30, 2018

In my case, processes accessing the global are just to read data from global, the global will not be changed by them. It is just once a month the global needs to be updated and only then is when the locks would be required.

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Eduard Lebedyuk · Jan 30, 2018

Remove the lock before starting Ensemble service.

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Eduard Lebedyuk · Jan 29, 2018

Have you checked Locks? If more than one process works with the same global locks are the way to go.

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Antonio Garcia ... · Jan 30, 2018

Thank you both for your quick replies.

That was exactly what I was looking for....

I think I will be using both...one to stop the other processes accessing the global + locks to really ensure no other processes access the global.

 

My code will be something like the following:

// Stop other ensemble jobs accessing to the global to avoid bad messages. 
// Jobs are such as services/processes/operations by name. 
DO ##class(Ens.Director).EnableConfigItem("xxx",0,0)
$$$LOGINFO("xxx Disabled")

// Add a lock to control access to the global.
// 0 => 1 attemp only.
LOCK +^lockname:0
// If lock is unsuccesfull, $TEST variable = 0
If '$TEST {
$$$LOGERROR("Lock cannot be obtained. Process cannot continue.")
Quit tSC 
}
$$$LOGINFO("LOCK on")



*** code here to update global ***



// Start other ensemble jobs accessing to the global to avoid bad messages. 
// Jobs are such as services/processes/operations by name. 
DO ##class(Ens.Director).EnableConfigItem("xxx",1,0)
$$$LOGINFO("xxx Enabled")

// REmove lock to control access to the global.
LOCK -^lockname
$$$LOGINFO("LOCK off")
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