If from machine host1, you submit a QUEUE GET request to the hostname of a remote machine, e.g. host2, you'll get an RC 25 error like the following:
C:\>STAF host2 QUEUE GET WAIT 5000 Error submitting request, RC: 25 Additional info --------------- QUEUE service's GET request is only valid if submitted to the local machine Local machine : host2.company.com Requesting machine: host1.company.com This is because STAF only allows you to get messages off your own STAF handle's queue for security reasons. That is, only the STAF handle of the process to which the message was sent can submit a GET request to the QUEUE service. This means that you must specify "local" for the service request and submit the QUEUE GET request using the specified handle. This is documented in section "8.13.3 GET/PEEK" in the STAF User's Guide at http://staf.sourceforge.net/current/STAFUG.htm#HDRQUEUESRV in the Security sub-section that says: "These commands are only valid with respect to the submitting process' queue and if submitted to the local machine. ". So, this means that you need to submit a local QUEUE GET request on the machine where the STAF handle exists. So, if the message was sent to a handle on machine host2, then you would need to submit a QUEUE GET request on machine host2 specifying "local" for the machine, e.g. STAF local QUEUE GET WAIT 5000 If you submit this request from the STAF command line, then you would first need to create a static handle and set STAF_STATIC_HANDLE to the handle number of the static handle you created because, otherwise, the STAF executable will automatically create a new STAF handle to use to submit the QUEUE GET request, and then automatically delete the handle (since the handle no longer exists, you obviously cannot get any message's off the handle's queue). Rather than using the STAF command line executable to submit the QUEUE GET request, you can submit it via a program (e.g. Java, C++, Perl, Python, Tcl) using the STAF APIs provided for each language to first register with STAF specifying a handle name such as MyProcess (which creates a STAF handle with this name). Then you can send messages to this STAF handle (via its handle name or number) from the same or remote machines (e.g. by specifying this handle via the HANDLE or NAME option on a PROCESS START NOTIFY ONEND request), and then submit a "GET" request to the "QUEUE" service on the local machine via the program to get messages off its handle's queue. When you start a process asynchronously via a PROCESS START request and use the NOTIFY ONEND option to send a notification when this process ends, by default, the STAF/Process/End notification message is sent to the handle of the process submitting the PROCESS START request on the machine submitting the PROCESS START request. If you want to have the STAF/Process/End notification message sent to another machine/handle, then you need to specify the following options as well: - MACHINE specifies the machine to which the notification should be sent. The default is the machine submitting the request. and one of the following options: - HANDLE specifies the handle to which the notification should be sent. The default is the handle of the process submitting the request. or - NAME specifies the registered name of the process(es) to which the notification should be sent. Note, these options are documented in the STAF User's Guide in section "8.12.2 START" at http://staf.sourceforge.net/current/STAFUG.htm#HDRPROCSRV. And are shown in the help for the PROCESS service as follows: C:\>STAF local PROCESS HELP Response -------- *** PROCESS Service Help *** START [SHELL [<Shell>]] COMMAND <Command> [PARMS <Parms>] [WORKDIR <Directory>] [VAR <Variable>=<Value>]... [ENV <Variable>=<Value>]... [USEPROCESSVARS] [WORKLOAD <Name>] [TITLE <Title>] [WAIT [<Number>[s|m|h|d|w]] | ASYNC] [STOPUSING <Method>] [STATICHANDLENAME <Name>] [NEWCONSOLE | SAMECONSOLE] [FOCUS <Background | Foreground | Minimized>] [USERNAME <User Name> [PASSWORD <Password>]] [DISABLEDAUTHISERROR | IGNOREDISABLEDAUTH] [STDIN <File>] [STDOUT <File> | STDOUTAPPEND <File>] [STDERR <File> | STDERRAPPEND <File> | STDERRTOSTDOUT] [RETURNSTDOUT] [RETURNSTDERR] [RETURNFILE <File>]... [NOTIFY ONEND [HANDLE <Handle> | NAME <Name>] [MACHINE <Machine>] [PRIORITY <Priority>] [KEY <Key>]] So, for example, if on machine host1 you want to start a process asynchronously on machine host2 and a STAF handle named MyProcess already exists on machine host 2, you could submit a PROCESS START request from machine host1 specifying to send a process completion message to the queue associated with handle(s) named MyProcess that exist on machine host2.. So, on host2, create a STAF handle, e.g. named MyProcess, either via a program or using the STAF executable via the command line. For example: C:\>STAF local HANDLE CREATE HANDLE NAME MyProcess Response -------- 11 On host1, submit the PROCESS START request specifying to send a STAF/Process/End notification message to any handles named MyProcess on machine host2: C:\>STAF host2 PROCESS START SHELL COMMAND hostname RETURNSTDOUT RETURNSTDERR NOTIFY ONEND MACHINE host2 NAME MyProcess Response -------- On machine host2, via a program that registered for STAF as a handle named MyProcess or via the command line using the STAF executable when using a static handle named MyProcess, you can submit the following request to wait for the STAF/Process/End message. For example: C:\>set STAF_STATIC_HANDLE=11 C:\>STAF local QUEUE GET WAIT 5000 Response -------- { handle : 1 handleName : STAF_Process machine : ssl://host2.company....@6550 message : { endTimestamp: 20100913-13:48:37 fileList : [ { data: host2 rc : 0 } { data: rc : 0 } ] handle : 14 key : rc : 0 } priority : 5 staf-map-class-name: STAF/Service/Queue/Entry timestamp : 20100913-13:48:38 type : STAF/Process/End user : none://anonymous } I hope this helps explains how to send a process completion notification message to a STAF handle on any machine and how to get this message off the STAF handle's queue. -------------------------------------------------------------- Sharon Lucas IBM Austin, luc...@us.ibm.com (512) 286-7313 or Tieline 363-7313 From: Arvind Chandra <arv...@yahoo.com> To: staf-users@lists.sourceforge.net Date: 09/13/2010 01:04 PM Subject: [staf-users] Getting response from process running on different hosts Hi, Is there a way to get the response from process running on different host. I would like not to use the STAF_STATIC_HANDLE Example can be something like host1 - local machine host2 - remote machine staf host2 process start shell command hostname returnstdout returnstderr notify onend And I can run the command staf host2 queue get wait 5000 But that is giving me error and it can not get notifications on remote machines. Thanks Arvind ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ staf-users mailing list staf-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/staf-users ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ staf-users mailing list staf-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/staf-users
