Hi Mike;
Given how close "mod_balancer" is to the traditional WO deployment,
it might be a nice approach for "mod_balancer" to take on-board the
few additional concepts necessary to support something which works
like "JavaMonitor / wotaskd" so that deploying a WO system does not
need a special Apache module compiled for it. That would make a
whole heap of documentation and confusion go away.
Yeah, this is actually exactly what I referring to :)
I guess it's the obvious thing to do. :)
Something like we're used to with JavaMonitor controlling the proxy
balancer module would be very handy.
"mod_balancer" needs to be able to socket-connect to an external
system (like wotaskd) to get the list of instances to 'balance over'.
I'm sure you know that there is an HTML interface called "balancer
manager" in mod_balancer, but of course it has no ability to start the
running instances on remote hosts and is.. well... not that great.
"Ping" and shutdown are supported as part of the AJP protocol (at
least AJP13) and I think that "refuse new sessions" should perhaps be
handled on the "mod_balancer" rather than the instance.
Another thought which may reduce the deployment documentation/
development overhead and ease-of-approach for newbies is that WOA's
could be built into servlets all the time, but that there is a
"special servlet container" built into WO runtime that can launch
the app in a way which resembles a stand-alone execution of the
application without the palaver that often goes with servlet
deployments. This idea may be quite nice.
So are you suggesting that WO should ALWAYS be running as a servlet,
just that WO itself has a tiny little servletish container in it
that it uses for directconnect?
In short; Yes! :) An important aspect of such a change would be to
make that "tiny little servletish container" nice and simple to run,
but still do the bare minimum to feed a servlet with WOMessage-s from
HTTP or AJP and fudge the URL-s for "mod_balancer" (see
LEWOAJPContext). BTW; still happy to push my the AJP adaptor
framework into ProjectWonder instead of my distro if you want.
cheers.
___
Andrew Lindesay
www.lindesay.co.nz
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