Hi All,
Guess I need some help in understanding the real cause for issue
CARBON-12902 [3]. The issue can be easily re-producible in IS, Carbon
and ESB with following steps,
1. Start server
2. Login to management console
3. Restart the server without closing browser
4. Try to access a link in management console.
In back-end logs you will see "System failed to authorise" error log.
But this error is not re-producible in AS. The cause for "System
failed to authorise" error log is server not able to retrieve the
realm for user. The realm is retrieved from the CarbonContext. Thus
the code which retrieves CarbonContext is in [1].
According to [1] once we received the CarbonContext, it is stored in
the session. But we do not expect CarbonContext to be persisted as a
session property. Also CarbonContext and other relevant classes are
not serializable. After a server restart the CarbonContext is found in
the session for IS, Carbon and ESB servers. But the CarbonContext
object is not valid (In the sense it does not contain required
attributes etc ... hence it leads to issue in [3]). Thus CarbonContext
is not there in the session for AS server (after a restart).
Therefore above mentioned issue does not occur for AS server but can
experience for other servers.
First of all I cant find a proper reason why this behaviour is
appearing in other server but not in AS. Isusru/Azeez any feedback on
this ?
Ideally we do not expect CarbonContext to be persisted during session
persistence. Is there a tomcat specific configuration where we can set
so that non-serializable classes are not persisted during session
persistence ? I found "<distributable />" configuration in web.xml,
but it didnt work for me [2].
Thank you
AmilaJ
[1]
private static CarbonContextHolder
getCurrentCarbonContextHolder(HttpSession httpSession,
boolean addToSession) {
Object contextObject = httpSession.getAttribute(CARBON_CONTEXT_HOLDER);
if (contextObject != null) {
return (CarbonContextHolder) contextObject;
} else if (!addToSession) {
return null;
}
CarbonContextHolder context = getClone();
log.debug("Added CarbonContext to the HTTP Session");
httpSession.setAttribute(CARBON_CONTEXT_HOLDER, context);
return context;
}
[2]
http://tomcat.apache.org/tomcat-6.0-doc/config/manager.html#Persistence_Across_Restarts
[3] https://wso2.org/jira/browse/CARBON-12902
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