Hi,
thanks Carl-Eric.
We're using sticky sessions already and the config seems to work for
everyting except CSS files. I've just seen that the browser also sends
the cookie containing the jsessionid along with the css request, so
maybe our sticky session config is wrong here. Already wrote the admin a
mail about that.
So, but I think we can also pre initialze our css resources.
Our CSS contains paths to images which vary only between staging and do
not depend on page params.
The problem is that it's not static, so we can simply use
PackageResource, but we have to interpolate our variable for the
imageserver.
PackageResource uses the configured ResourceStreamLocator which in turn
uses the configured IResourceFinder which is per default
org.apache.wicket.util.file.WebApplicationPath. This buddy uses an
FileResourceStream and here I have to intercept: Write a separate impl.
of WebApplicationPath which uses an TextTemplate instead of an
FileResourceStream, and configure this in the application so that
Application.get().getResourceSettings().getResourceFinder() returns my
interpolating implementation.
Is there a simpler way for this?
Best regards
Chris
On 12/09/2010 11:48 AM, Carl-Eric Menzel wrote:
Hi,
seems to me you should probably use sticky sessions in your
loadbalancer ;-)
I think if your resource depends on instance variables in your Page you
really need to do that. If you just depend on stuff happening in the
initialization of the Page class (not an instance) you could use an
Initializer that gets run on application startup. See
org.apache.wicket.IInitializer for details.
Carl-Eric
www.wicketbuch.de
On Thu, 09 Dec 2010 11:22:54 +0100
Chris Wewerka<[email protected]> wrote:
Hi,
I've used the approach described in
https://cwiki.apache.org/confluence/display/WICKET/Dynamically+Generate+a+CSS+Stylesheet
for dynamic CSS and js files. (already added my comment, point 5)
But I've experienced a problem in our live cluster (two tomcats with
apaches and a loadbalancer)
For example, if server1 and server2 sit behind a loadbalancer and
your wicket app is freshly started it might happen, that the first
user gets directed to server1, from which he gets the start page.
This page may include dynamic css like above which the browser now
loads in a separate request which maybe gets delegated to server2,
which maybe has never initialized the start page. Now the wicket app
from server2 serves the css without resolving the variables.
I'm scanning through the wicket resources, especially
SharedResources.java and PackageResource but I'm not sure how to
solve the problem since CSSPackageResource is for static resources
and DynamicWebResource is in a different branch of the Resource
hierarchy, so before writing my own DynamicCSSResource
implementation, I wanted to ask if someone else had the same problem
and if there is already a solution for it, which I didn't find yet.
Regards Chris
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