Sharon, do received events stay on the queue for only a short time? From
some testing of mine, it appears that I have to be waiting on the queue as
events are received. If I try to get events after they have been generated,
there's nothing there.
Arve
On Fri, Oct 15, 2010 at 10:10 AM, Arve Knudsen <arve.knud...@gmail.com>wrote:
> Thanks for the example Sharon, I think I am getting somewhere now although
> I don't know what's different from my previous attempts yet. I'm going to
> try to reimplement my full scenario step by step, and we'll see how it goes.
>
> I notice a problem with PySTAF though, when I issue the request "QUEUE GET
> WAIT TYPE STAF/Service/Event" and it waits, I cannot interrupt with Ctrl+C.
> I have to kill Python. This is on Red Hat Linux btw.
>
> Arve
>
>
> On Thu, Oct 14, 2010 at 9:00 PM, Sharon Lucas <luc...@us.ibm.com> wrote:
>
>> Arve,
>>
>> Here is the same example as shown in the Event Service User's Guide except
>> that all STAF commands are being submitted via the command line using the
>> STAF executable instead of being submitted via a Java program. The
>> following three machines will be used in this example:
>> - lucas.austin.ibm.com: Is the Event service machine (e.g. the machine
>> where the Event service is registered in its STAF.cfg file)
>> - staf6e.austin.ibm.com: Is a machine that registers to be notified when
>> an event with type "build" is generated by the Event service machine
>> - staf1e.austin.ibm.com: Is a machine that submits a request to the
>> Event
>> service machine to generate an event with type "build"
>>
>> 1) Machine staf6e's MyTestHandle registers with the Event service machine
>> (lucas) to be notified for events with type "build":
>>
>> So, first on staf6e, since this example is from the command line, I'll
>> create a static STAF handle to use for this test and set environment
>> variable STAF_STATIC_HANDLE to this handle so that the STAF requests that
>> I
>> submit from this terminal will be submitted using this STAF handle
>> (instead
>> of the STAF executable creating a new STAF handle each time it is called).
>>
>> staf6e:~ root# STAF local HANDLE CREATE HANDLE Name MyTestHandle
>> Response
>> --------
>> 736
>>
>> staf6e:~ root# export STAF_STATIC_HANDLE=736
>>
>> Then handle MyTestHandle on machine staf6e registers with the Event
>> service
>> machine (lucas) to be notified for events with type "build". It will be
>> notified by handle name (which is the default), not by handle number.
>>
>> staf6e:~ root# STAF lucas EVENT REGISTER TYPE build
>> Response
>> --------
>>
>> To show the registration(s) for event type "build" on the Event service
>> machine (lucas), you can list the registrations as follows:
>>
>> staf6e:~ root# STAF lucas EVENT LIST REGISTRATIONS TYPE build
>> Response
>> --------
>> Type Subtype Machine Notify By Notifiee
>> ----- ------- -------------------------------- --------- ------------
>> build <None> ssl://staf6e.austin.ibm....@6550 Name MyTestHandle
>>
>> 2) Machine staf6e's MyTestHandle waits for a message with type
>> "STAF/Service/Event" to be sent to its queue:
>>
>> The handle we created named MyTestHandleMachine on machine staf6e submits
>> a
>> local request to wait indefinitely for a message with type
>> "STAF/Service/Event" to be sent to its queue. Note that every STAF handle
>> has a queue associated with it.
>>
>> staf6e:~ root# STAF local QUEUE GET WAIT TYPE STAF/Service/Event
>>
>> This request will not complete until it receives a message with TYPE
>> "STAF/Service/Event" on its queue (since I didn't specify a maximum wait
>> time for the WAIT option).
>>
>> Note that you could submit this request after the event is generated
>> instead of before the event is generated. It doesn't matter.
>>
>> 3) Machine staf1e generates an event with type build and subtype win32 on
>> the Event service machine lucas:
>>
>> Note that the event service machine (lucas) must give machine
>> staf1e.austin.ibm.com trust level 4 or greater as that's the trust level
>> that it requires to submit a GENERATE request to the Event service.
>>
>> [r...@staf1e ~]# STAF lucas EVENT GENERATE TYPE build SUBTYPE win32
>> Response
>> --------
>> 2
>>
>> This triggers the Event service machine (lucas) to send a
>> "STAF/Service/Event" type message to MyTestHandle's queue on machine
>> staf6e.
>>
>> 4) The message arrives on MyTestHandle's queue on machine stat6e:
>>
>> The "STAF local QUEUE GET WAIT TYPE STAF/Service/Event" request previously
>> submitted on machine staf6e completes when the message arrives on its
>> queue:
>>
>> staf6e:~ root# STAF local QUEUE GET WAIT TYPE STAF/Service/Event
>> Response
>> --------
>> {
>> handle : 6
>> handleName : STAF/SERVICE/Event
>> machine : ssl://lucas.austin.ibm....@6550
>> message : {
>> eventID : 2
>> eventServiceName: Event
>> handle : 509
>> handleName : STAF/Client
>> machine : ssl://staf1e.austin.ibm....@6550
>> propertyMap : {}
>> subtype : win32
>> timestamp : 20101014-13:35:55
>> type : build
>> }
>> priority : 5
>> staf-map-class-name: STAF/Service/Queue/Entry
>> timestamp : 20101014-13:26:23
>> type : STAF/Service/Event
>> user : none://anonymous
>> }
>>
>> --------------------------------------------------------------
>> Sharon Lucas
>> IBM Austin, luc...@us.ibm.com
>> (512) 286-7313 or Tieline 363-7313
>>
>>
>>
>>
>> From: Arve Knudsen <arve.knud...@gmail.com>
>> To: Sharon Lucas/Austin/i...@ibmus
>> Cc: staf-users@lists.sourceforge.net
>> Date: 10/14/2010 12:55 PM
>> Subject: Re: [staf-users] How do I receive an event from another
>> machine?
>>
>>
>>
>> Hi Sharon
>>
>> I've now looked at the example, although it really showcases event
>> propagation between two processes on the same machine rather than on two
>> different machines. It looks quite similar to what I've been trying to do
>> on the commandline however. Could you please provide a condensed
>> commandline example that I can try out for myself, and see that it
>> actually
>> works?
>>
>> Thanks!
>> Arve
>>
>> On Thu, Oct 14, 2010 at 6:12 PM, Sharon Lucas <luc...@us.ibm.com> wrote:
>> The Event Service User's Guide at
>> http://staf.sourceforge.net/current/event.pdf provides a working example
>> in
>> section "Example 1: Using the Event Service Via Two Java Applications"
>> that
>> includes registering for events, generating events, and and receving
>> event
>> messages on a STAFHandle's queue. Does that provide what you're looking
>> for?
>>
>> --------------------------------------------------------------
>> Sharon Lucas
>> IBM Austin, luc...@us.ibm.com
>> (512) 286-7313 or Tieline 363-7313
>>
>>
>>
>>
>> From: Arve Knudsen <arve.knud...@gmail.com>
>> To: staf-users@lists.sourceforge.net
>> Date: 10/14/2010 10:58 AM
>> Subject: [staf-users] How do I receive an event from another
>> machine?
>>
>>
>>
>> Hello
>>
>> Can someone please provide me with a working example of how machine A can
>> register for an event at machine B, and receive it etc.? I've tried and
>> tried and can't seem to figure out how to make it work.
>>
>> Thanks!
>> Arve
>>
>>
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