Dear Sir or Madam,
we identified an issue during request handling in Wicket 7.12.0 when
session dies during processing.
The problem is, that parts of the code accessing current session by
calling Session.get() which then return a valid session cached in
ThreadContext.getSession().
But when accessing an attribute of the Session, the code accesses the
real session, which is dead and leads to an Exception.
So we were a little confused why Session.get() and Session.exists()
return valid results when Session is already dead.
How we can avoid Session.get() and Session.exists() return valid
results? Alternatively how we can ensure, that Request with cached
Session is handled correctly?
The stack trace of our problem:
java.lang.IllegalStateException:
org.apache.shiro.session.UnknownSessionException: There is no session
with id [48cf6f39-9bf6-4b76-84cd-a106e707af63]
at
org.apache.shiro.web.servlet.ShiroHttpSession.getAttribute(ShiroHttpSession.java:133)
~[shiro-web-1.3.2.jar:1.3.2]
getAttribute:286, HttpSessionStore (org.apache.wicket.session)
getAttribute:743, Session (org.apache.wicket) *<< Why this is not
accessing cached Session?*
getSessionAttribute:66, DefaultPageManagerContext (org.apache.wicket.page)
getSessionAttribute:101, RequestAdapter (org.apache.wicket.page)
getSessionEntry:414, PageStoreManager$PersistentRequestAdapter
(org.apache.wicket.page)
storeTouchedPages:438, PageStoreManager$PersistentRequestAdapter
(org.apache.wicket.page) *<< Should this happen, when Session is
already dead?*
commitRequest:193, RequestAdapter (org.apache.wicket.page)
commitRequest:76, AbstractPageManager (org.apache.wicket.page)
commitRequest:74, PageManagerDecorator (org.apache.wicket.page)
commitRequest:270, PageAccessSynchronizer$2 (org.apache.wicket.page)
onDetach:1798, Application$3 (org.apache.wicket)
notify:105, RequestCycleListenerCollection$3
(org.apache.wicket.request.cycle)
notify:101, RequestCycleListenerCollection$3
(org.apache.wicket.request.cycle)
notify:120, ListenerCollection$1 (org.apache.wicket.util.listener)
reversedNotify:144, ListenerCollection (org.apache.wicket.util.listener)
reversedNotifyIgnoringExceptions:113, ListenerCollection
(org.apache.wicket.util.listener)
onDetach:100, RequestCycleListenerCollection
(org.apache.wicket.request.cycle)
onDetach:649, RequestCycle (org.apache.wicket.request.cycle)
detach:594, RequestCycle (org.apache.wicket.request.cycle)
processRequestAndDetach:297, RequestCycle
(org.apache.wicket.request.cycle)
processRequestCycle:261, WicketFilter (org.apache.wicket.protocol.http)
processRequest:203, WicketFilter (org.apache.wicket.protocol.http)
doFilter:284, WicketFilter (org.apache.wicket.protocol.http)
internalDoFilter:193, ApplicationFilterChain (org.apache.catalina.core)
doFilter:166, ApplicationFilterChain (org.apache.catalina.core)
doFilterInternal:99, RequestContextFilter (org.springframework.web.filter)
doFilter:107, OncePerRequestFilter (org.springframework.web.filter)
internalDoFilter:193, ApplicationFilterChain (org.apache.catalina.core)
doFilter:166, ApplicationFilterChain (org.apache.catalina.core)
doFilter:61, ProxiedFilterChain (org.apache.shiro.web.servlet)
executeChain:108, AdviceFilter (org.apache.shiro.web.servlet)
doFilterInternal:137, AdviceFilter (org.apache.shiro.web.servlet)
doFilter:125, OncePerRequestFilter (org.apache.shiro.web.servlet)
doFilter:66, ProxiedFilterChain (org.apache.shiro.web.servlet)
executeChain:108, AdviceFilter (org.apache.shiro.web.servlet)
doFilterInternal:137, AdviceFilter (org.apache.shiro.web.servlet)
doFilter:125, OncePerRequestFilter (org.apache.shiro.web.servlet)
doFilter:66, ProxiedFilterChain (org.apache.shiro.web.servlet)
executeChain:449, AbstractShiroFilter (org.apache.shiro.web.servlet)
call:365, AbstractShiroFilter$1 (org.apache.shiro.web.servlet)
doCall:90, SubjectCallable (org.apache.shiro.subject.support)
call:83, SubjectCallable (org.apache.shiro.subject.support)
execute:383, DelegatingSubject (org.apache.shiro.subject.support)
doFilterInternal:362, AbstractShiroFilter (org.apache.shiro.web.servlet)
doFilter:125, OncePerRequestFilter (org.apache.shiro.web.servlet)
invokeDelegate:357, DelegatingFilterProxy (org.springframework.web.filter)
doFilter:270, DelegatingFilterProxy (org.springframework.web.filter)
internalDoFilter:193, ApplicationFilterChain (org.apache.catalina.core)
doFilter:166, ApplicationFilterChain (org.apache.catalina.core)
invoke:198, StandardWrapperValve (org.apache.catalina.core)
invoke:96, StandardContextValve (org.apache.catalina.core)
invoke:478, AuthenticatorBase (org.apache.catalina.authenticator)
invoke:140, StandardHostValve (org.apache.catalina.core)
invoke:80, ErrorReportValve (org.apache.catalina.valves)
invoke:650, AbstractAccessLogValve (org.apache.catalina.valves)
invoke:279, RewriteValve (org.apache.catalina.valves.rewrite)
invoke:677, RemoteIpValve (org.apache.catalina.valves)
invoke:87, StandardEngineValve (org.apache.catalina.core)
service:342, CoyoteAdapter (org.apache.catalina.connector)
service:799, Http11Processor (org.apache.coyote.http11)
process:66, AbstractProcessorLight (org.apache.coyote)
process:868, AbstractProtocol$ConnectionHandler (org.apache.coyote)
doRun:1457, NioEndpoint$SocketProcessor (org.apache.tomcat.util.net)
run:49, SocketProcessorBase (org.apache.tomcat.util.net)
runWorker:1149, ThreadPoolExecutor (java.util.concurrent)
run:624, ThreadPoolExecutor$Worker (java.util.concurrent)
run:61, TaskThread$WrappingRunnable (org.apache.tomcat.util.threads)
run:748, Thread (java.lang)
Kind regards
*PATRICK SCHWARZER*
SOFTWARE ENGINEER
*o***+49 89 32175 655
*TOMTEC Imaging Systems GmbH*
Edisonstrasse 6, 85716 Unterschleissheim, Germany, Managing Director:
Johannes Waldinger, Dr. Thomas Piehler, HRB 235646 Amtsgericht Muenchen
** <http://www.tomtec.de/>
