RE: Switching between releases during runtime

[jo...@fwd.at]

Hi Yoav,

Thanks for your ideas, but how do they work out in the ant deploy 
scenario, where the application actually resides in "/usr/local/tomcat/
work/Standalone/localhost/manager/forms.war" ?

*) Is it an option to create a symlink "forms" in the /webapps directory 
to point to "/usr/local/tomcat/work/Standalone/localhost/manager/forms.war
"?
*) Do I have any other options than creating a symlink? I'm working with a 
Windows-machine for development, so I'd prefer something not os-specific!
*) The best thing would be a pseudo-context which simply points to another 
context, so each request gets mapped to the versioned context.

thx alot
Johannes





"Shapira, Yoav" <Yo...@mpi.com> 
31.03.2003 16:51
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Subject
RE: Switching between releases during runtime







Howdy,
Several other approaches, all I think better than your context pointer
idea:

- Have the context XML definition file (tomcat 4.1 or later) name a
symlink as the docBase.  That symlink would point to myapp-1.0 and could
be changed to myapp-1.1 etc.

- Have the context entry itself in the webapps directory be a symlink to
somewhere outside the webapps directory, for example:
/local/build/myapp-1.0
/local/build/myapp-1.1
/local/tomcat/webapps/myapp -> /local/build/myapp-1.0
so "myapp" under webapps is just a symlink.

- Just redeploy appropriately using the ant tasks supplied with tomcat
an save yourself headaches in the long run.

Yoav Shapira
Millennium ChemInformatics


>-----Original Message-----
>From: johannes.fiala@fwd.at [mailto:johannes.fiala@fwd.at]
>Sent: Saturday, March 29, 2003 12:33 PM
>To: Tomcat Users List
>Subject: Switching between releases during runtime
>
>hi there,
>
>Is it possible to have a "virtual" context, which just points to
another
>context?
>e.g.
>myapp = current version, should point to myapp-1.0
>myapp-1.0
>myapp-1.1
>
>Is it possible to change the context "myapp" is pointing to during
>runtime?
>This would make switching between releases much easier rather than
having
>to redeploy for each release switch.
>
>What do you think about this idea?
>
>thx
>Johannes



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