To "get" messages off a queue you should be using the QUEUE service's GET request.
If the queue is empty and you did not specify the WAIT option on your QUEUE GET request, it returns STAF RC 29 (No Queue Element) which is defined as follows: C:\>STAF local HELP ERROR 29 Response -------- Description: No queue element Details : This indicates that you tried to GET or PEEK a particular element i n a queue, but no such element exists, or the queue is empty. You can code for that. However, as I told you before and as the examples I provided show, the way most people use it (and how STAF services's use it), is to do use the WAIT option with the GET request so that the QUEUE GET WAIT request will return when there is at least one message on the queue. or if you specified a time limit, it times out with STAF RC 37 (Timeout). -------------------------------------------------------------- Sharon Lucas IBM Austin, luc...@us.ibm.com (512) 286-7313 or Tieline 363-7313 From: "Dedhia, Hardik" <hardik.ded...@netapp.com> To: Sharon Lucas/Austin/IBM@IBMUS Date: 06/29/2011 01:47 PM Subject: RE: [staf-users] Type of MESSAGE in QUEUE I tried the GET request initially but it returns unsuccessful if the QUEUE is empty or no messages to read. I intend to achieve message oriented communication using asynchronously Queued messages. Thanks, Hardik. From: Sharon Lucas [mailto:luc...@us.ibm.com] Sent: Wednesday, June 29, 2011 2:44 PM To: Dedhia, Hardik Cc: staf-users Subject: RE: [staf-users] Type of MESSAGE in QUEUE To get messages off a queue, you should use the QUEUE service's GET request (with the ALL option if you want to get all messages off the queue), not the LIST and DELETE requests. Note that between the time you submit a QUEUE LIST request and a QUEUE DELETE request, additional messages may have been added to the queue. See the STAF User's Guide for a description of the QUEUE service's GET request. And see the example that I previously sent you that use the QUEUE service's GET request. -------------------------------------------------------------- Sharon Lucas IBM Austin, luc...@us.ibm.com (512) 286-7313 or Tieline 363-7313 From: "Dedhia, Hardik" <hardik.ded...@netapp.com> To: Sharon Lucas/Austin/IBM@IBMUS Date: 06/29/2011 01:37 PM Subject: RE: [staf-users] Type of MESSAGE in QUEUE Thanks for that … I’m using QUEUE LIST to save queue contents in a resultPtr This is followed by a QUEUE DELETE. Then I use the resultPtr to operate on the messages found in the queue. I do LIST and DELETE sequentially not to lose delete messages which have been queued after the LIST request. But, I’m losing messages sometimes in an incoherent way. Is there some step which I am missing? Thanks, Hardik. From: Sharon Lucas [mailto:luc...@us.ibm.com] Sent: Wednesday, June 29, 2011 12:06 PM To: Dedhia, Hardik Cc: staf-users@lists.sourceforge.net Subject: Re: [staf-users] Type of MESSAGE in QUEUE See the description of the QUEUE service's QUEUE request in section "8.13.2 QUEUE" in the STAF User's Guide at http://staf.sourceforge.net/current/STAFUG.htm#HDRQUEUESRV. It also provides an example of using the TYPE option. STAF local QUEUE QUEUE NAME "MyApplication" TYPE "info" MESSAGE "START" Note that you can see the syntax for QUEUE service requests by using its HELP option. For example: C:\>STAF local QUEUE HELP Response -------- *** QUEUE Service Help *** QUEUE MESSAGE <Message> [HANDLE <Handle>] | [NAME <Name>] [PRIORITY <Priority>] [TYPE <Type>] GET [PRIORITY <Priority>]... [MACHINE <Endpoint>]... [NAME <Name>]... [HANDLE <Handle>]... [USER <User>]... [TYPE <Type>]... [CONTAINS <String>]... [ICONTAINS <String>]... [FIRST <Number> | ALL] [WAIT [<Number>[s|m|h|d|w]]] PEEK [PRIORITY <Priority>]... [MACHINE <Endpoint>]... [NAME <Name>]... [HANDLE <Handle>]... [USER <User>]... [TYPE <Type>]... [CONTAINS <String>]... [ICONTAINS <String>]... [FIRST <Number> | ALL] [WAIT [<Number>[s|m|h|d|w]]] DELETE [PRIORITY <Priority>]... [MACHINE <Endpoint>]... [NAME <Name>]... [HANDLE <Handle>]... [USER <User>]... [TYPE <Type>]... [CONTAINS <String>]... [ICONTAINS <String>]... LIST [HANDLE <Handle>] HELP -------------------------------------------------------------- Sharon Lucas IBM Austin, luc...@us.ibm.com (512) 286-7313 or Tieline 363-7313 From: "Dedhia, Hardik" <hardik.ded...@netapp.com> To: <staf-users@lists.sourceforge.net> Date: 06/29/2011 10:57 AM Subject: [staf-users] Type of MESSAGE in QUEUE Hello, I wanted to change the type of message that I am putting in the Queue using the Queue Service’ Queue request. Staf local QUEUE QUEUE MESSAGE START NAME MyApplication This message is delivered as type none by default. How can I change this? To say Type Info. Thanks, Hardik. ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ staf-users mailing list staf-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/staf-users
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------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2
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