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From "Richard Mixon" <rnmi...@qwest.net>
Subject RE: Run shell script when web application start/restart
Date Thu, 13 Jul 2006 23:15:58 GMT
Maybe I'm missing something, but if you re-generate the pages, and have
Tomcat in development mode, the new pages will automatically be re-compiled
the next time they are accessed. 

-----Original Message-----
From: Tom Potter [mailto:nullpointer.gpf@gmail.com] 
Sent: Thursday, July 13, 2006 7:59 AM
To: Tomcat Users List
Subject: Re: Run shell script when web application start/restart

The reason for me choosing the first, messy solution was that this had to be
a quick fix, rewriting the logic in the JSP pages was out of the question
(and way above the allocated budget ;) ).

Of course I had the shell scripts and configuration files so it seemed just
the right solution to  use these tools in the startup process of the webapp.

It seems that I can convince the cusomer to just run the shell scripts that
modify(actually generate) the JSP pages but then I face an other problem.
After generating and copying the JSP pages in the right place how can I tell
tomcat (from the shell script) to restart the application (or to recompile
the pages) ?

Rgds
Thomas

On 7/13/06, Avi Deitcher <avi@deitcher.net> wrote:
>
> I don't think so. You could, theoretically, have a context listener 
> that then executes a shell script, but that is really messy, and the 
> security manager probably won't even allow it.
>
> If I understand correctly, you want to have the following happen on 
> context restart:
> - JSP pages get rebuilt from some macros or config files
>
> I can think of two ways to do this. The not-so-great way is to have a 
> context listener read the config files and generate the pages. The 
> problem is that I don't know when JSP pages are compiled by the Tomcat 
> engine - before or after context listeners are invoked. I believe you 
> can force a re-compilation of the JSP pages at that point, but I am 
> not sure how.
>
> The much smarter way is to ask why your JSP pages need to be 
> macro/dynamically generated. JSP includes enough logic tags. Why not 
> refactor your JSP pages so that they read the configuration files and 
> output the appropriate information? This would be much cleaner, and 
> probably wouldn't even require context restart?
>
> Tom Potter wrote:
>
> > Jen,
> >
> > Just to make sure that we both talk about the same events :
> > I don't want to restart the whole tomcat, only one web application, 
> > that is, by clicking on the start link(or restart) in on the admin page.
> > I don't see how your suggestion would help me... if I'm missing 
> > something please make it clear to me...
> >
> > Rgds
> > Thomas
> >
> > On 7/13/06, Mead, Jennifer L - VSCM <Mead.Jennifer@vectorscm.com> wrote:
> >
> >>
> >> On my box the start and stop scripts are just that.  .sh shell scripts.
> >> In your case I would just copy them to a save file and put in an 
> >> execution string.  The start scripts are in tomcat_home/bin.
> >>
> >> Jen
> >>
> >> -----Original Message-----
> >> From: Tom Potter [mailto:nullpointer.gpf@gmail.com]
> >> Sent: Thursday, July 13, 2006 5:28 AM
> >> To: users@tomcat.apache.org
> >> Subject: Run shell script when web application start/restart
> >>
> >> The JSP pages in the Web application I install under Tomcat 4.1.30 
> >> are based on some configuration files the user wants to modify, 
> >> thus I
> wrote
> >> a shell script to rebuild the JSP pages and repopulate the webapps 
> >> folder.
> >>
> >> My question is that is there a way to hook up my shell script with 
> >> the webapp start/stop proces so it would run at every startup, in 
> >> other words the user would activate my script by restarting the
application ?
> >>
> >> Thanks
> >> Thomas
> >>
> >> -------------------------------------------------------------------
> >> -- To start a new topic, e-mail: users@tomcat.apache.org To 
> >> unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> >> For additional commands, e-mail: users-help@tomcat.apache.org
> >>
> >>
> >
>
> --
> ______________________________
> Avi Deitcher
> avi@deitcher.net
>
>
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, 
> e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>


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