Hi Costin,
I will be very interested to learn more about the ProfileLoader
and Tomcat 3.3 in general.
I hope to have more time to bang on TC3.3 and TC4.0 after
Enhydra Enterprise 4.0 is released.
Shawn
[EMAIL PROTECTED] wrote:
> Hi William,
>
> Regarding "multiple ContextManagers" - IMHO it should be possible to do
> that, but it's not a very tested feature.
>
> If what you want to do is support virtual hosts - tomcat supports
> virtual hosts using a single ContextManager ( the contextManager is a
> representation for a "server" that may have multiple hosts).
>
> There is no special representation for Host ( as a top-level object ) -
> each Context belongs to a virtual host, and the mapper is routing the
> requests. You can add additional modules to filter or do other tricks.
> ( just use Context.getHost() or getHostAliases() ).
>
> If you want to isolate applications/hosts - using separate VMs may give
> you more benefits.
>
> There are cases when multiple ContextManagers may help - for example if
> the servers have very different configuration ( i.e. top-level modules
> for mapping, etc).
>
> In 3.3 ( with the experimental ProfileLoader ) you can push all the
> modules as per/context interceptors, i.e. separate sets of
> modules for each web application - what's shared is the config modules
> and the top-level mapper. That means even fewer reasons to have multiple
> ContextManagers.
>
> IMHO if what you want to do requires changes/fixes in tomcat, you should
> try tomcat 3.3, where it is still possible to do this kind of change
> ( assuming it's not too big ). For 3.2.2 I don't think this can be
> clasified as a critical bug, and I don't think Marc would enjoy it :-)
>
> Costin
>
> > Could you point me more specifically at where Enhydra uses multiple
> > ContextManagers? I just downloaded EE 4.0a4 and couldn't find any files
> > that have examples of multiple ContextManagers on different ports serving
> > groups of apps. Whenever I try to use multiple ContextManagers on different
> > ports I get lots of messages about removing duplicate servlets (like the jsp
> > servlet, status servlet, exception servlet), and tomcat is unresponsive to
> > any of my requests and refuses to shutdown, until I 'kill' it.
> >
> > Any help on figuring this out would be great. From my code archeology I was
> > just about to conclude that it wasn't possible in tomcat 3.2.1 until your
> > comment made me think that I had missed something.
> >
> > -Bill
> >
> > > -----Original Message-----
> > > From: Shawn McMurdo [mailto:[EMAIL PROTECTED]]
> > > Sent: Tuesday, March 06, 2001 10:25 AM
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: Assigning Servlets to different ports.
> > >
> > >
> > > Hi Mel,
> > > If you are interested in an approach to getting Tomcat to serve
> > > apps on multiple ports, you might want to check out the
> > > Enhydra Enterprise 4.0 source.
> > > We create multiple ContextManagers, where each ContextManager
> > > handles the group of apps running on a particular connection (port).
> > > This is currently using Tomcat 3.2.1.
> > > Shawn
> > >
> > > Mel Martinez wrote:
> > >
> > > > --- Uijin Hong <[EMAIL PROTECTED]> wrote:
> > > > > Why don't you just run 2 servlet container(Tomcat)s
> > > > > for each port?
> > > > >
> > > >
> > > > That could get memory expensive if you have to do this
> > > > for several ports.
> > > >
> > > > The best performance scenario might be to use Apache
> > > > to listen to several ports and rewrite them to go to a
> > > > single tomcat 'delegator' servlet which then
> > > > dispatches them to servlets/JSPs appropriately. And
> > > > actually, you should just use apache rewrites directly
> > > > to dispatch to any static resources.
> > > >
> > > > Mel
> > > >
> > > > > -----Original Message-----
> > > > > From: William Wishon
> > > > > [mailto:[EMAIL PROTECTED]]
> > > > > Sent: Tuesday, March 06, 2001 9:27 AM
> > > > > To: [EMAIL PROTECTED]
> > > > > Subject: Assigning Servlets to different ports.
> > > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > <snipped>
> > > > >
> > > > > An example of what I'm trying to do is to have a GET
> > > > > on "/" of port 8080
> > > > > return webapps/app1/index.html and a GET of "/" on
> > > > > port 8081 return
> > > > > webapps/app2/index.html.
> > > > >
> > > > > Thanks,
> > > > > Bill
> > > > >
> > > > >
> > > > >
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> > > --
> > > Shawn McMurdo mailto:[EMAIL PROTECTED]
> > > Lutris Technologies http://www.lutris.com
> > > Enhydra.Org http://www.enhydra.org
> > >
> > >
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Lutris Technologies http://www.lutris.com
Enhydra.Org http://www.enhydra.org
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