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https://issues.apache.org/jira/browse/TAPESTRY-695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Peter Ertl closed TAPESTRY-695.
-------------------------------
Resolution: Fixed
old enough to close
> WebRequestServicerFilter lacks support for tapestry.globals.*
> -------------------------------------------------------------
>
> Key: TAPESTRY-695
> URL: https://issues.apache.org/jira/browse/TAPESTRY-695
> Project: Tapestry
> Issue Type: Bug
> Components: Framework, Web
> Reporter: Peter Ertl
> Assignee: Jesse Kuhnert
> Fix For: 4.1.2
>
>
> problem description:
> step 1: let there be an "Authenticator" service which uses the current
> request (for credentials lookup)
> // ----------------------------------------------------------
> <service-point id="Authenticator">
> <invoke-factory model="threaded">
> <construct class="AuthenticatorImpl">
> <set-service property="request"
> service-id="tapestry.globals.WebRequest" />
> </construct>
> </invoke-factory>
> </service-point>
> // ----------------------------------------------------------
> public class AuthenticatorImpl implements Authenticator
> {
> private WebRequest request; // injected
> // setters + other stuff omitted
>
> public boolean isAuthenticated()
> {
> if(request.getSession(false) == null)
> return false;
>
> // more stuff comes here...
> }
> }
> // ----------------------------------------------------------
> step 2: now inject the authenticator into a request filter
> // ----------------------------------------------------------
> <service-point id="AuthenticationFilter"
> interface="org.apache.tapestry.services.WebRequestServicerFilter">
> <invoke-factory>
> <construct class="AuthenticationFilter">
> <set-service property="authenticator" service-id="Authenticator" />
> </construct>
> </invoke-factory>
> </service-point>
>
> <contribution
> configuration-id="tapestry.request.WebRequestServicerPipeline">
> <filter name="auth" object="service:AuthenticationFilter" />
> </contribution>
>
> // ----------------------------------------------------------
> public class AuthenticationFilter implements WebRequestServicerFilter
> {
> private Authenticator authenticator; // injected
>
> // setters + other stuff omitted
>
> public void service(WebRequest request, WebResponse response,
> WebRequestServicer servicer) throws IOException
> {
> if(authenticator.isAuthenticated())
> {
> // *****************************************************
> // the above operation "isAuthenticated()" will fail !!!
> // request == NULL
> // *****************************************************
> }
> }
>
> }
> // ----------------------------------------------------------
> Property 'webRequest' of <OuterProxy for
> tapestry.globals.RequestGlobals(org.apache.tapestry.services.RequestGlobals)>
> is null.
> this should not happen as the request is available at this time (it's a
> parameter of the service method)
> however, I do not want to handle the request to the authenticator as it's
> used not only in the filter
> but also in the login page.
> I think this is a general problem with filters being called before
> tapestry.globals is fully initialized
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