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Posted to users@tapestry.apache.org by Angelo Chen <an...@yahoo.com.hk> on 2008/12/15 23:41:19 UTC
T5: a default notification page
Hi,
Often I need to shutdown tomcat in order to do some maintenance work, is
there a way to define a page in a T5 application so that all links to the
application goes to that page? thanks.
Angelo
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Re: T5: a default notification page
Posted by Olle Hallin <ol...@gmail.com>.
I think that you can do this with Apache mod_rewrite and use the presence of
a certain file as an indicator that the site is in maintenance mode.
Search for the ContPattern -F in
http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html
This will make it extremely simple to maintain. The backup script starts by
touching a certain well-known file that mod_rewrite looks for, and
ends by removing that file. The down-side is that the mod_rewrite -F
conditional affects performance negatively.
Should you need to put the site in maintenance mode for other reasons, just
touch the marker file manually.
HTH,
Olle
2008/12/16 Angelo Chen <an...@yahoo.com.hk>
>
> Thanks to all replies, I think good idea to have Apache in front of tomcat.
> a
> related question is, say you need to backup the database at certain time in
> a day, this has to be automated, you can't manually pointing the page to
> another location, any good practice on this? I'm thinking of putting a
> dispatcher, and a global variable, when it is set, all the page will be
> redirected in the dispatcher to a 'maintenance page' until the backup is
> done which will set the global variable to false and the dispatcher again
> will not redirect anything, what do you think?
>
>
> Angelo Chen wrote:
> >
> > Hi,
> > Often I need to shutdown tomcat in order to do some maintenance work, is
> > there a way to define a page in a T5 application so that all links to the
> > application goes to that page? thanks.
> >
> > Angelo
> >
>
> --
> View this message in context:
> http://www.nabble.com/T5%3A-a-default-notification-page-tp21023653p21029929.html
> Sent from the Tapestry - User mailing list archive at Nabble.com.
>
>
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> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
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>
--
Olle Hallin
Senior Java Developer and Architect
olle.hallin@crisp.se
www.crisp.se
Re: T5: a default notification page
Posted by Angelo Chen <an...@yahoo.com.hk>.
Thanks to all replies, I think good idea to have Apache in front of tomcat. a
related question is, say you need to backup the database at certain time in
a day, this has to be automated, you can't manually pointing the page to
another location, any good practice on this? I'm thinking of putting a
dispatcher, and a global variable, when it is set, all the page will be
redirected in the dispatcher to a 'maintenance page' until the backup is
done which will set the global variable to false and the dispatcher again
will not redirect anything, what do you think?
Angelo Chen wrote:
>
> Hi,
> Often I need to shutdown tomcat in order to do some maintenance work, is
> there a way to define a page in a T5 application so that all links to the
> application goes to that page? thanks.
>
> Angelo
>
--
View this message in context: http://www.nabble.com/T5%3A-a-default-notification-page-tp21023653p21029929.html
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Re: T5: a default notification page
Posted by Andreas Andreou <an...@gmail.com>.
if you shutdown tomcat, tapestry app wont be running ;)
If you have apache setup in front of tomcat, you can add redirect
rules to a static html page
see http://significantbits.wordpress.com/2007/03/15/setting-a-maintenance-page-in-apache-2/
or similar
posts
On Tue, Dec 16, 2008 at 1:50 AM, Thiago H. de Paula Figueiredo
<th...@gmail.com> wrote:
> Em Mon, 15 Dec 2008 19:41:19 -0300, Angelo Chen <an...@yahoo.com.hk>
> escreveu:
>
>> Hi,
>> Often I need to shutdown tomcat in order to do some maintenance work, is
>> there a way to define a page in a T5 application so that all links to the
>> application goes to that page? thanks.
>
> I haven't tested, but maybe you can decorate
> ComponentClassResolver.resolvePageNameToClassName() and
> ComponentClassResolver.resolvePageClassNameToPageName() to always return
> your application-out-of-order page. The AOP possibilities in Tapestry 5 are
> almost endless . . .
>
>>
>> Angelo
>
>
>
> --
> Thiago H. de Paula Figueiredo
> Independent Java consultant, developer, and instructor
> Consultor, desenvolvedor e instrutor em Java
> http://www.arsmachina.com.br/thiago
>
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> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
--
Andreas Andreou - andyhot@apache.org - http://blog.andyhot.gr
Tapestry / Tacos developer
Open Source / JEE Consulting
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Re: T5: a default notification page
Posted by "Thiago H. de Paula Figueiredo" <th...@gmail.com>.
Em Mon, 15 Dec 2008 19:41:19 -0300, Angelo Chen
<an...@yahoo.com.hk> escreveu:
> Hi,
> Often I need to shutdown tomcat in order to do some maintenance work, is
> there a way to define a page in a T5 application so that all links to the
> application goes to that page? thanks.
I haven't tested, but maybe you can decorate
ComponentClassResolver.resolvePageNameToClassName() and
ComponentClassResolver.resolvePageClassNameToPageName() to always return
your application-out-of-order page. The AOP possibilities in Tapestry 5
are almost endless . . .
>
> Angelo
--
Thiago H. de Paula Figueiredo
Independent Java consultant, developer, and instructor
Consultor, desenvolvedor e instrutor em Java
http://www.arsmachina.com.br/thiago
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