On 18 Nov 2009, at 00:07, Imad Hachem <hachem_i...@hotmail.com> wrote:
> Dear Pid,
> find below my explanation:
>
> 1. Manually set an attribute (e.g. MANUAL_STOP=1) in application scope
> 2. Manually shutdown Tomcat instance.
> 3. Tomcat expires all sessions
> 4. Tomcat fires HttpSessionListener.sessionDestroyed for each session
> 5. custom code checks for, and finds, attribute (e.g. MANUAL_STOP=1)
> if(MANUAL_STOP == null){ // Tomcat Cluster Node Shutdown
>
> //don't do anything
>
> }
>
> else{ // case of session.invalidate or session timeout
>
> 6. custom code does logout per session
> }
>
> 8. Tomcat fires ServletContextListener.contextDestroyed for each app
>
> But in fact, the variable MANUAL_STOP saved to the application scope
> is always coming as 1, even after tomcat cluster node shutdown which
> expected to come as null.
Yes. The value 1 is expected - you're not explaining why you think it
should be null.
p
>
>
>
> I need to know if my sessionDestroyed has been called from a
> session.invalidate Event OR session timeout OR Tomcat Cluster node
> shutdown.
>
>
>
> Best Regards,
> Imad Hachem
>
> System Engineer
>
>
>
>
>> Date: Tue, 17 Nov 2009 16:23:16 +0000
>> From: p...@pidster.com
>> To: users@tomcat.apache.org
>> CC: ihac...@lb.path-solutions.com
>> Subject: Re: MISC; Tomcat-5.5.12; After one Tomcat Cluster node
>> shutdown, sessionDestroyed been called before contextDestroyed
>>
>> On 17/11/2009 16:11, Imad Hachem wrote:
>>>
>>> Dear Pid,
>>>
>>> I am expecting them to come as null to know that the Tomcat Node
>>> (or context) has been shutdown.
>>
>> That makes no sense. These are the logical steps.
>>
>> 1. Manually set an attribute (e.g. MANUAL_STOP=1) in application
>> scope
>> 2. Manually shutdown Tomcat instance.
>> 3. Tomcat expires all sessions
>> 4. Tomcat fires HttpSessionListener.sessionDestroyed for each session
>> 5. custom code checks for, and finds, attribute (e.g. MANUAL_STOP=1)
>> 6. custom code does logout per session
>> 8. Tomcat fires ServletContextListener.contextDestroyed for each app
>>
>>
>> Perhaps you can explain, clearly, what you expect to happen and
>> where it
>> happens?
>>
>>
>> p
>>
>>
>>> Best Regards,
>>> Imad Hachem
>>>
>>> System Engineer
>>>
>>>
>>>
>>>
>>>> Date: Tue, 17 Nov 2009 16:08:37 +0000
>>>> From: p...@pidster.com
>>>> To: users@tomcat.apache.org
>>>> CC: ihac...@lb.path-solutions.com
>>>> Subject: Re: MISC; Tomcat-5.5.12; After one Tomcat Cluster node
>>>> shutdown, sessionDestroyed been called before contextDestroyed
>>>>
>>>> On 17/11/2009 15:57, Imad Hachem wrote:
>>>>>
>>>>> Dear Pid,
>>>>>
>>>>> I have tried to set application context variables, but it didn't
>>>>> worked, since I m expecting to get these variables as null
>>>>> values after node shutdown, but in fact they are coming as not
>>>>> null.
>>>>
>>>> If you set them as "not null" and they are "not null" why are you
>>>> surprised?
>>>>
>>>> Why do you expect them to be null?
>>>>
>>>>
>>>> p
>>>>
>>>>
>>>>> Best Regards,
>>>>> Imad Hachem
>>>>>
>>>>> System Engineer
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> Date: Tue, 17 Nov 2009 15:38:22 +0000
>>>>>> From: p...@pidster.com
>>>>>> To: users@tomcat.apache.org
>>>>>> Subject: Re: MISC; Tomcat-5.5.12; After one Tomcat Cluster node
>>>>>> shutdown, sessionDestroyed been called before contextDestroyed
>>>>>>
>>>>>> On 17/11/2009 14:40, Ronald Klop wrote:
>>>>>>> Hi Imad,
>>>>>>>
>>>>>>> Ronald. (The Ronald of the link mentioned by Pid.)
>>>>>>
>>>>>> Did the code supplied therein, work for you Ronald?
>>>>>>
>>>>>>
>>>>>> @Imad
>>>>>>
>>>>>> The Servlet Spec (and therefore Tomcat) doesn't differentiate
>>>>>> between
>>>>>> causes of session expiry.
>>>>>>
>>>>>> The code requires you to set a value in the application scope,
>>>>>> then the
>>>>>> HttpSessionListener sessionDestroyed method checks for that
>>>>>> value.
>>>>>>
>>>>>> If the value is present, you initiated shutdown. If it is not,
>>>>>> then
>>>>>> it's probably a session expiry and you run your logout code.
>>>>>>
>>>>>> Did you actually set such an attribute?
>>>>>>
>>>>>>
>>>>>> p
>>>>>>
>>>>>>
>>>>>>> Op dinsdag, 17 november 2009 14:36 schreef Imad Hachem
>>>>>>> <hachem_i...@hotmail.com>:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Dear Pid,
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> I am running a Logout Process at each sessionDestroy.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> After applying the Cluster configuration, I don't want to
>>>>>>>> Logout my
>>>>>>>> Users (or run this Logout Process) after any Tomcat Cluster
>>>>>>>> node
>>>>>>>> shutdown, since the Session has been replicated to the other
>>>>>>>> Node
>>>>>>>> Cluster.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Best Regards,
>>>>>>>> Imad Hachem
>>>>>>>> System Engineer
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>> From: p...@pidster.com
>>>>>>>>> Date: Tue, 17 Nov 2009 13:09:47 +0000
>>>>>>>>> Subject: Re: MISC; Tomcat-5.5.12; After one Tomcat Cluster
>>>>>>>>> node
>>>>>>>> shutdown, sessionDestroyed been called before contextDestroyed
>>>>>>>>> To: users@tomcat.apache.org
>>>>>>>>>> On 17 Nov 2009, at 12:11, Imad
>>>>>>>>>> Hachem<hachem_i...@hotmail.com>
>>>>>>>> wrote:
>>>>>>>>>>>
>>>>>>>>>> Dear Pid,
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> I have tried that code and didn't helped, note that my
>>>>>>>>>> context&
>>>>>>>>>> session variables are not coming as null in order to rely
>>>>>>>>>> on to be
>>>>>>>>>> able to differenciate between Tomcat Node shutdown&
>>>>>>>>>> session.invalidate().
>>>>>>>>>> I'm sorry but I don't understand what you're saying here.
>>>>>>>>>> Tomcat& the servlet api can't tell you the difference
>>>>>>>>>> between an app
>>>>>>>>> shutdown and a session expiry without you writing code.
>>>>>>>>>> What did you try?
>>>>>>>>>> What was or wasn't null exactly?
>>>>>>>>>> p
>>>>>>>>>>>> Best Regards,
>>>>>>>>>> Imad Hachem
>>>>>>>>>>
>>>>>>>>>> System Engineer
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> Date: Tue, 17 Nov 2009 11:41:20 +0000
>>>>>>>>>>> From: p...@pidster.com
>>>>>>>>>>> To: users@tomcat.apache.org
>>>>>>>>>>> Subject: Re: MISC; Tomcat-5.5.12; After one Tomcat Cluster
>>>>>>>>>>> node
>>>>>>>>>>> shutdown, sessionDestroyed been called before
>>>>>>>>>>> contextDestroyed
>>>>>>>>>>>
>>>>>>>>>>> On 17/11/2009 11:31, Imad Hachem wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> Dear Pid,
>>>>>>>>>>>>
>>>>>>>>>>>> Thanks for your reply.
>>>>>>>>>>>>
>>>>>>>>>>>> But can you specify exactly which Servlets API method to
>>>>>>>>>>>> use?
>>>>>>>>>>>
>>>>>>>>>>> The link I sent had some code in it, did you read it?
>>>>>>>>>>>
>>>>>>>>>>>> Note that Tomat-5.5.12 is deployed on Production
>>>>>>>>>>>> environment and
>>>>>>>>>>>> we are not facing major issues.
>>>>>>>>>>>
>>>>>>>>>>> But you might be facing some security ones.
>>>>>>>>>>>
>>>>>>>>>>>> I will appreciate if you can adivse to which Tomcat
>>>>>>>>>>>> Stable version
>>>>>>>>>>>> we should Migrate taking in consideration that Tomcat
>>>>>>>>>>>> Cluster is
>>>>>>>>>>>> used in our environment as well.
>>>>>>>>>>>
>>>>>>>>>>> The latest: Tomcat 5.5.28. Same app, many bugfixes. Your
>>>>>>>>>>> version was
>>>>>>>>>>> released September 2005, over 4 years ago (that's 28
>>>>>>>>>>> internet
>>>>>>>> years).
>>>>>>>>>>>
>>>>>>>>>>> It's not good practice to avoid upgrading for that long.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> p
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> Best Regards,
>>>>>>>>>>>> Imad Hachem
>>>>>>>>>>>>
>>>>>>>>>>>> System Engineer
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>> Date: Tue, 17 Nov 2009 10:15:58 +0000
>>>>>>>>>>>>> From: p...@pidster.com
>>>>>>>>>>>>> To: users@tomcat.apache.org
>>>>>>>>>>>>> Subject: Re: MISC; Tomcat-5.5.12; After one Tomcat
>>>>>>>>>>>>> Cluster node
>>>>>>>>>>>>> shutdown, sessionDestroyed been called before
>>>>>>>>>>>>> contextDestroyed
>>>>>>>>>>>>>
>>>>>>>>>>>>> On 17/11/2009 04:14, Imad Hachem wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Dear all,
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I am using Tomcat-5.5.12 as Clustering nodes, and after
>>>>>>>>>>>>>> one node
>>>>>>>>>>>>>> shutdown sessionDestroyed is called before
>>>>>>>>>>>>>> contextDestroyed.
>>>>>>>>>>>>>
>>>>>>>>>>>>> Are you still using 5.5.12? Hasn't anyone advised you to
>>>>>>>>>>>>> upgrade
>>>>>>>>>>>>> to a
>>>>>>>>>>>>> newer version yet?
>>>>>>>>>>>>>
>>>>>>>>>>>>> I think it's perfectly reasonably to call
>>>>>>>>>>>>> sessionDestroyed()
>>>>>>>> before
>>>>>>>>>>>>> contextDestroyed().
>>>>>>>>>>>>>
>>>>>>>>>>>>>> How can I know if sessionDestroyed is called from
>>>>>>>>>>>>>> session.invalidate()
>>>>>>>>>>>>>> from the real expiration of the session or shutdown of
>>>>>>>>>>>>>> one
>>>>>>>>>>>>>> cluster node?
>>>>>>>>>>>>>
>>>>>>>>>>>>> You can't know this directly from the Servlet API methods.
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Note that on sessionDestroyed event, I am using a Logout
>>>>>>>>>>>>>> behavior to
>>>>>>>>>>>>>> logout my users from the DATABASE.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> I have tried to set a KEY on the context (or
>>>>>>>>>>>>>> application scope)
>>>>>>>>>>>>>> to check
>>>>>>>>>>>>>> on it during the sessionDestroyed event, but it seems the
>>>>>>>>>>>>>> context is
>>>>>>>>>>>>>> destroyed after the session destroy event.
>>>>>>>>>>>>>
>>>>>>>>>>>>> This comes up not infrequently on the list, the archives
>>>>>>>>>>>>> have more
>>>>>>>>>>>>> information:
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>> http://old.nabble.com/Re%3A-sessionListener.sessionDestroyed-is-called-on-shutdown-of-a-node-in-the-cluster-p16746969.html
>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Is there any event listener that I can use before the
>>>>>>>>>>>>>> sessionDestroyed to differentiate if one cluster node
>>>>>>>>>>>>>> has been
>>>>>>>>>>>>>> shutdown or my session has been expired?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Or is how to configure the contextDestroy to be called
>>>>>>>>>>>>>> before
>>>>>>>>>>>>>> the sessions destroy?
>>>>>>>>>>>>>
>>>>>>>>>>>>> No, contextDestroyed() means that the web application
>>>>>>>>>>>>> itself has
>>>>>>>>>>>>> been
>>>>>>>>>>>>> stopped, this is mandated by the Servlet Spec.
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> p
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>> Thanks in advance for your help.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> Best Regards,
>>>>>>>>>>>>>> Imad Hachem
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> System Engineer
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> _________________________________________________________________
>>>>>>>>>>>>>> Windows Live: Make it easier for your friends to see
>>>>>>>>>>>>>> what yo
>>>>>>>>>>>>>> u锟斤拷re up to on Facebook.
>>>>>>>>>>>>>>
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>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
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>>>>>>>>>>>>
>>>>>>>>>>>> _________________________________________________________________
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>>>>>>>>>>>>
>>>>>>>> http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:en-xm:SI_SB_5:092010
>>>>>>>>
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>>>>>>>>>>
>>>>>>>>>> _________________________________________________________________
>>>>>>>>>> Windows Live: Make it easier for your friends to see what
>>>>>>>>>> you锟斤拷
>>>>>>>>>> re up to on Facebook.
>>>>>>>>>>
>>>>>>>> http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:en-xm:SI_SB_2:092009
>>>>>>>>
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>>>>>>>>> _________________________________________________________________
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>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
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>>>>>>
>>>>>
>>>>> _________________________________________________________________
>>>>> Windows Live: Make it easier for your friends to see what yo
>>>>> u're up to on Facebook.
>>>>> http://www.microsoft.com/middleeast/windows/windowslive/see-it-in-action/social-network-basics.aspx?ocid=PID23461::T:WLMTAGL:ON:WL:en-xm:SI_SB_2:092009
>>>>
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>>>
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>>
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> _________________________________________________________________
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