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Date: Wed, 29 Dec 2010 07:56:56 -0800
Message-ID: <AANLkTim--BdYG5V1iThA16XrPjvb5JRr53SihSzhkdHt@mail.gmail.com>
Subject: Re: Doing left-over request processing at startup....
From: Brian McQueen <mcqueenorama@gmail.com>
To: modules-dev@httpd.apache.org
Content-Type: text/plain; charset=ISO-8859-1

I do think that the httpd may be un-needed except as a proxy. You know
about Apache's Active MQ and other such queues?   They have a protocol
(not http) which is designed for reliable messaging. Maybe its jms or
stomp?   There might even be a module designed to proxy to active mq.


On 12/29/10, Mike Meyer <mwm-keyword-apache.b9a3c0@mired.org> wrote:
> On Wed, 29 Dec 2010 08:27:33 -0500
> Jerry Stuckle <jerry@smartechhomes.com> wrote:
>
>>
>>
>> On 12/29/2010 7:07 AM, Mike Meyer wrote:
>> > On Wed, 29 Dec 2010 11:00:09 +0200
>> > Issac Goldstand<margol@beamartyr.net>  wrote:
>> >
>> >> On 29/12/2010 10:52, Mike Meyer wrote:
>> >>> The current code actually works fine - except for this timing
>> >>> issue. If I kill apache in the middle of handling a reversal, and
>> >>> restart it, the first connection will cause the unfinished reversal to
>> >>> be finished. I'm trying to find some way to make this happen at
>> >>> startup, instead of on the first connection.
>> >> Maybe try something simpler?  Write a script which fires at apache
>> >> startup and just makes a dummy request to trigger the queue?  I know
>> >> that's a lot less fun and less elegant ;), but will it get the job
>> >> done?
>> >
>> > Yeah, I'd been thinking about something like that. Start it a bit
>> > after apache, probe the port, connect, count to one, and go away....
>>
>> If you don't need to give feedback to the web user, just place the
>> request in a queue, i.e. in a database.  Then start a cron job every 5
>> minutes (or whenever) to process any work in the queue.  Much simpler.
>
> We do need to give feedback to the web user. In fact, failure to do
> that means the request has failed, and has to be reversed. That we
> need to complete these actions even if apache is rebooted while we're
> trying is the root cause of the problem.
>
>        Thanks,
>        <mike
> --
> Mike Meyer <mwm@mired.org>		http://www.mired.org/consulting.html
> Independent Network/Unix/Perforce consultant, email for more information.
>
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