[jdf-dev] [jdf-users] Any JDF Updates equivalents to counter.war? wanted to use a Quickstart app to test cluster session failover

Thu Jul 12 18:38:05 EDT 2012

HTML5 + REST sounds pretty cool.  I like it.  It's certainly the most 
modern approach.

Since a lot of people who will be testing clusters may not be 
professional developers, is it possible to have the WAR somewhere for 
them pre-built?  I am picturing our sysadmins and QA folks, neither of 
which have Maven installed on their system.  Also, some ANT users may 
want to test a cluster, but not download Maven.

So are the goals:

 1. Show developer how to make their application cluster/failover-safe.
 2. Provide a sample app users can deploy to EAP6 and test failover.

Regarding Servlets, I was really just envisioning 1 table...something 
very basic and ugly like:

<html>
<head><title>Session Replication Demo</title><head>
<body>
<table>
<tr><th>user<th><td>?</td></tr>
<tr><th>counter<th><td>?</td></tr>
</table>
</body>
</html>

Is that too "bush-league" for JDF? :)  I like servlets because it will 
make sense to folks who haven't updated their skillset since the early 
2000s.  I run into far more of those than I should.  :)

Then again, maybe it's just time for folks to learn some JavaScript :)

I guess HTTP Auth is not mandatory, just thinking it's good proof things 
are replicating correctly.

Thanks,
Steven

On 7/12/2012 6:00 PM, Pete Muir wrote:
> On 12 Jul 2012, at 22:55, StevenBoscarine wrote:
>
>> Hello Pete,
>> Happy to take the lead and get this started.  Any idea for an initial name?  <artifactId>jboss-as-session-replication</artifactId>?
> Sounds good.
>
>> I was thinking @Stateful because it requires @Clustered, right?
>> https://docs.jboss.org/author/display/AS71/Clustered+EJBs
>>
>> @Stateless requires it as well, right?
>> http://docs.jboss.org/jbossclustering/cluster_guide/5.1/html/clustering-session.html
>>
>> Are there any other Java EE features that need developer action to make them clustering/failover-ready?  Does CDI need anything for replicating conversation or session scoped beans in a cluster?
> To get the CDI session scope clustered, just add <distributable /> to web.xml
>
>> Regarding JSF, I'm fine with whatever folks think.  JSF is good since everything they need is built into the container.
>>
>> However, my first thought is that the simpler we can make things, the better.  A lot of folks hate JSF.  I find pushing it at organizations an uphill battle.  When I say that acronym, a lot of folks still roll their eyes.  IMHO, the best solution for a quickstart is the one that does the job with the least number of moving parts.
> Ok. I was just worried it could be a lot of boilerplate in the Servlet.
>
> Or we could do HTML5 + REST.
>
>> If there's 1 page and HTTP Basic Authentication, would we gain anything by having JSF?  Obviously am happy to accommodate what others want.
> No, I'm just thinking that writing lots of HTML in servlets is pretty nasty.
>
>> I was thinking:
>> 	• HTTP Basic Authentication
>> 	• A servlet displaying a counter and the current login name.
>> 	• @Stateful EJBs injected to maintain state.
>> 	• @Stateless EJB injected just to show how.
> Well, to me the priority is to show CDI session scope working in a cluster. I think more people will use this than EJBs.
>
> We could do a second quickstart to show EJBs.
>
> I'm not sure why we need to pull HTTP auth into it?
>
>> WDYT?
>>
>> Thanks,
>> Steven
>>
>>
>> On 7/12/2012 4:55 PM, Pete Muir wrote:
>>> Hi Steven
>>>
>>> Yes, we want a session replication quickstart :-)
>>>
>>> We should, as you say, update it to use CDI (why an SLSB?) and Servlet 3. Possibly JSF?
>>>
>>> Pete
>>>
>>> On 12 Jul 2012, at 19:56, StevenBoscarine wrote:
>>>
>>>
>>>> Hello All,
>>>> I wanted to do an exercise to test failover on our new EAP6 cluster.
>>>> Any recommendations?
>>>>
>>>> The one I'm familiar with is using
>>>>
>>>> https://community.jboss.org/wiki/ReplicatedCounter
>>>>   and confirming the
>>>> counter doesn't go down when you kill a container.
>>>>
>>>> If there isn't a great QS for session replication, does this dovetail
>>>> with any of the JDF Quickstarts?  If so, I'd love to see it use a
>>>> @Stateful session bean, Maven, and Servlet 3.0.  I could update this war
>>>> rather quickly if you saw value in having a QS specifically for testing
>>>> Session replication.
>>>>
>>>> Thanks,
>>>> Steven
>>>> _______________________________________________
>>>> jdf-users mailing list
>>>>
>>>> jdf-users at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/jdf-users
>>

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