Yes, your understanding is correct. Your service that registers for
handle deletion notifications would also need to be able to handle a
STAF_CALLBACK HANDLEDELETED HANDLE <Handle#> UUID <uuid> MACHINE
<Endpoint> KEY <Key> request submitted to it as this is how your service
is notified when a handle is deleted. When your service handles a
STAF_CALLBACK request, it should verify that the originator of the request
is the STAFProc handle (handle #1) as no other STAF handles should ever
submit a STAF_CALLBACK request to your service.
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
From: Strösser, Bodo <bodo.stroes...@ts.fujitsu.com>
To: Sharon Lucas/Austin/IBM@IBMUS,
Cc: "staf-users@lists.sourceforge.net"
<staf-users@lists.sourceforge.net>
Date: 09/15/2011 12:12 PM
Subject: RE: [staf-users] STAF service: receive notification if a
handle is deleted
Hi Sharon,
thank you for this valuable advice.
Do I understand the source correctly: the requested notification is sent
from STAF as a “special” service request that uses the action
“staf_callback” and is accepted only if the originator of the request is
STAF?
Bodo
From: Sharon Lucas [mailto:luc...@us.ibm.com]
Sent: Wednesday, September 14, 2011 10:03 PM
To: Strösser, Bodo; Strösser, Bodo
Cc: staf-users@lists.sourceforge.net
Subject: Re: [staf-users] STAF service: receive notification if a handle
is deleted
Yes, you can register (and unregister) to be notified when a STAF handle
no longer exists via what we call "Handle Garbage Collection". However,
we don't provide documentation for this functionality as it can be a
little tricky to use. If it is used incorrectly it can cause issues.
One of the external STAF services that use "Handle Garbage Collection" is
the Resource Pool (ResPool) service. So, you could look at the source
code for the ResPool service (it is an external C++ service) to see how it
is done in src/staf/services/respool/STAFResPoolService.cpp. It submits a
STAF_NOTIFY REGISTER ONENDOFHANDLE request to the local HANDLE service
(which is undocumented) to add a notification for when a STAF handle (for
a specified STAF instance running on a machine) no longer exists. See the
ResPool service's submitSTAFNotifyRegisterRequest() method. For example:
STAF local HANDLE STAF_NOTIFY REGISTER ONENDOFHANDLE <Handle#> MACHINE
<Endpoint> UUID <uuid> SERVICE <ServiceName> KEY <Key>
And it submits a STAF_NOTIFY UNREGISTER ONENDOFHANDLE request to the local
HANDLE service (which is undocumented) if it wants to remove the
notification. See the ResPool service's
submitSTAFNotifyUnregisterRequest() method. For example.
STAF local HANDLE STAF_NOTIFY UNREGISTER ONENDOFHANDLE <Handle#> MACHINE
<Endpoint> UUID <uuid> SERVICE <ServiceName> KEY <Key>
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
From: Strösser, Bodo <bodo.stroes...@ts.fujitsu.com>
To: "staf-users@lists.sourceforge.net"
<staf-users@lists.sourceforge.net>,
Date: 09/14/2011 02:03 PM
Subject: [staf-users] STAF service: receive notification if a
handle is deleted
Hi,
I would like to write a STAF service, that allows to create instances of a
specific test tool (“MyService CREATE ….”),
pass commands to it (“MyService DOCMD ….”) and terminate the tool
(“MyService DELETE …”).
Each test tool instance would be associated with the STAF handle used
while doing the CREATE.
So it would be fine to have an automatic DELETE on a test tool, when this
handle is deleted.
So, is there a way to be notified on handle deletion?
Bodo
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