Re: [xmlblaster-devel] get, qos/history/ at numEntries=1 returns 2!

[Marcel Ruff <mr at marcelruff.info>]

Brad Clements wrote:
> Maybe I misunderstand how this is supposed to work but ..
>
> my server publishes a message unit via xpath key with lifetime=60000
>
> I really only want one such message to exist at any given time. The server keeps 
> publishing the same message every 15 seconds or so, like a watchdog timer.
>
> I can't find the publish qos setting that makes sure there's only one such 
> message unit in xmlblaster at any given time.
>
> The publishOneway Qos looks like this:
>
> <qos><expiration lifeTime="60000" /></qos> 
>   
At least the first publish could send additionally

 <topic>
     <queue relating='history' maxEntries='1'/>
  </topic>



see
http://www.xmlblaster.org/xmlBlaster/doc/requirements/interface.publish.html
> anyway, I'm hooking up a nagios script to check to see if this key exists, so I do a 
> get, with this qos:
>
> <qos>
>   <content>false</content>
> <history newestFirst="true" numEntries="1"/>
> </qos>
>
> But I get back 2 entries every time, and they come back
> oldest first, not newestFirst.
>   
strange, what if you remove the <history> tag?

regards
Marcel
> (that is, the one with the lowest remainingLife comes first)
>
> 1. What qos setting do I use to make sure there's only one message unit pending 
> at any given time?
>
> 2. why is the history portion of the qos in the get request being ignored?
>
>
>
>
>