[jbosscache-dev] Notification interceptor

[Hany Mesha]

Hi all, 

When Bela and I were discussing this issue I documented all the ideas
and questions on the jira issue. Please see
http://jira.jboss.com/jira/browse/JBCACHE-270 

Bela is right we need to get a notification interceptor in place "Even
if we end up having only 95% of all notifications  emitted from the
interceptor, and the rest directly, that would be  fine too." 

At the time thinking of this feature, I was debating another idea which
is having a dual notification interceptor. One to emits pre-call
notification at the bottom of the stack and one emits post-call at the
top of the stack. I can't recall why we didn't go with it. Anyway, I'm
bringing it up right now just to kick start the thinking process again. 

Cheers, 

Hany 

>>> On Sun, Sep 17, 2006 at  7:28 AM, in message
<16715A85-5394-48E3-A646-785A99CD3E6F at jboss.org>, Manik Surtani
<manik at jboss.org> wrote:

Hany,

Could you pls join the JBoss Cache dev list here:

https://lists.jboss.org/mailman/roster/jbosscache-dev

and join this discussion?

Thanks,
--
Manik Surtani

Lead, JBoss Cache
JBoss, a division of Red Hat

Email: manik at jboss.org
Telephone: +44 7786 702 706
MSN: manik at surtani.org
Yahoo/AIM/Skype: maniksurtani


On 16 Sep 2006, at 20:50, Bela Ban wrote:

> Let's find the bits and pieces of emails between us and Hany, we 
> discussed this feature in great detail. IIRC, one of the issues was 
> that there was no real good place for the NotificationInterceptor, 
> in some cases towards the top would have been okay, in some not. 
> Example: CacheLoader/Store interceptor: those methods don't get 
> passed up, so a NotifInt towards the top would not be able to catch 
> them.
>
> But, yes, we need to start thinking about having all notifications 
> emitted from one place, so let's kick-start that thought process 
> again. Even if we end up having only 95% of all notifications 
> emitted from the interceptor, and the rest directly, that would be 
> fine too.
>
> Manik, maybe it is a good idea to involve Hany again, because he 
> was involved real deep before... I'm sure he remembers some of the 
> discussions...
>
> Manik Surtani wrote:
>> Hi,
>>
>> There was talk of a separate notification interceptor some while 
>> back.  What happened around this?
>>
>> Looking at wiring in the relevant notifications for move() and 
>> realise what a PITA it is with notification calls scattered all 
>> over the code base.
>>
>> I think an interceptor at (or close to) the head of the chain to 
>> fire notifications would be quite straightforward and easy - pre 
>> and post notifications would be easily handled.  The only 
>> notification that would originate outside of this interceptor 
>> would be load/evict/activate/passivate notifications ...
>>
>> What do people think?
>>
>> Cheers,
>> --
>> Manik Surtani
>>
>> Lead, JBoss Cache
>> JBoss, a division of Red Hat
>>
>> Email: manik at jboss.org
>> Telephone: +44 7786 702 706
>> MSN: manik at surtani.org
>> Yahoo/AIM/Skype: maniksurtani
>>
>>
>> _______________________________________________
>> jbosscache-dev mailing list
>> jbosscache-dev at lists.jboss.org
>> https://lists.jboss.org/mailman/listinfo/jbosscache-dev
>>
>
> --
> Bela Ban
> Lead JGroups / Manager JBoss Clustering Group
> JBoss - a division of Red Hat
>


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