Thanks for having a look Sharon! The remark in the manual about the security
model makes more sense to me now, as do the handle and queue constructs. The
crux of what I was missing seems to be the STAF_STATIC_HANDLE environment
variable in Section 5.2 of the user guide. I set that, and GET/PEEK now
returns the marshaled data structure I was expecting.
--joe
From: Sharon Lucas [mailto:luc...@us.ibm.com]
Sent: Friday, March 06, 2009 10:57 AM
To: Joe Malek
Cc: staf-users@lists.sourceforge.net
Subject: Re: [staf-users] Startup notice and queue messages
You can only get/peek messages on your own handle's queue for security reasons.
That it, only the queue's handle is allowed to manipulate the contents of its
queue via a GET, PEEK, or DELETE request. So, a GET/PEEK request must be
submitted to the QUEUE service by the handle whose queue you want to
retrieve/remove messages from. That's why sub-section "Security" in sections
"8.13.3 GET/PEEK" and "8.13.4 DELETE" says:
"These commands are only valid with respect to the submitting process' queue
and if submitted to the local machine."
Section "8.13.3 GET/PEEK" in the STAF User's Guide defines the HANDLE option on
a GET/PEEK request for the QUEUE service as follows:
"HANDLE specifes that you want to retrieve/remove a message originating from
a process with the given handle. The default is any handle. You may specify
this option multiple times."
So, it's not the handle whose queue you want to get/peek messages from. It's
the handle that queued the message, thus, allowing you to get messages that
were sent by a particular handle. The HANDLE option for a GET/PEEK request is
not defined the same as the HANDLE option for a LIST request. A LIST request
submitted to the QUEUE service (which doesn't manipulate the contents of a
queue) can list messages for another handle by specifying the HANDLE option
(assuming you have the required trust level).
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
Joe Malek <j.ma...@f5.com>
03/06/2009 12:14 PM
To
"staf-users@lists.sourceforge.net" <staf-users@lists.sourceforge.net>
cc
Subject
[staf-users] Startup notice and queue messages
Hi,
I'm new to STAF and am building a new environment using
dynamically provisioned virtual machines as test servers and my goal is to
maintain a respool of ready vms to dole out workloads. The vm will start staf
on its own and notify the workload manager according to the test server's
staf.cfg:
NOTIFY ONSTART MACHINE staf PRIORITY 3 HANDLE 26
NOTIFY ONSHUTDOWN MACHINE staf HANDLE 26
I see the startup and shutdown messages traverse the network between the nodes
(using a protocol analyzer) and can find them on the workload manager in the
queue for handle 26 with:
staf local QUEUE LIST HANDLE 26
as evidenced by
Response
--------
P Date-Time Machine Handle Name H# User Type Message
- ----------------- ------------ ----------- -- ---------------- ------ -------
3 20090305-17:05:03 tcp://vdixpc STAF_Proces 1 none://anonymous STAF/S
lie...@6500 s tart
3 20090305-17:09:28 tcp://vdixpc STAF_Proces 1 none://anonymous STAF/S
lie...@6500 s tart
3 20090306-09:57:06 tcp://vdixpc STAF_Proces 1 none://anonymous STAF/S
lie...@6500 s tart
5 20090305-17:09:16 tcp://vdixpc STAF_Proces 1 none://anonymous STAF/S
lie...@6500 s hutdow
n
5 20090305-17:10:46 tcp://vdixpc STAF_Proces 1 none://anonymous STAF/S
lie...@6500 s hutdow
but I cannot seem to access the messages in the queue with the GET/PEEK
commands.
C:\STAF>staf local QUEUE PEEK PRIORITY 3 HANDLE 26
Error submitting request, RC: 29
C:\STAF>staf local QUEUE GET PRIORITY 3 HANDLE 26
Error submitting request, RC: 29
If I add the WAIT command to the request and restart staf on the worker-bee
messages are added to the queue but don't aren't found by GET/PEEK. This issue
doesn't seem unique to start/stop notices either - I'm able to enter messages
into the queue on the local server and also cannot retrieve those messages with
GET/PEEK. After I get this sorted out, I'd like to move to the event manager
service so that the machine can be added to the respool automatically; but I
thought I'd start out simpler first.
RC 29 indicates to me that there's no element found in the queue, and based on
the output of the LIST command, that doesn't appear to be the case. STAF is at
version 3.3.2 on both hosts.
What am I missing here?
Thanks!
--joe
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