[jboss-dev-forums] [JBoss Transactions Development] - Re: Transactional MSC

[Paul Robinson]

Paul Robinson [https://community.jboss.org/people/paul.robinson] created the discussion

"Re: Transactional MSC"

To view the discussion, visit: https://community.jboss.org/message/830019#830019

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All,

I've knocked up a quick prototype [1] that uses JBoss Modules to provide classloader isolation. I'm sure we all (especilly David) already know what this would look like, but I thought it would be a good idea to create something so that I can make sure I understand it properly and so that we have something tangible to discuss.

In the prototype, I've created a new JBossModule called "org.jboss.narayana.arjunacore". This module has its own jbossts-properties.xml (located at /modules/system/layers/base/org/jboss/narayana/arjunacore/main/config/jbossts-properties.xml) for configuring this instance of ArjunaCore. In the property file I have changed the object store location to be in "./dummymsc-object-store"; this allows us to see that two seperate configs are actually being used. 

To show this in action, I created a new subsystem that depends on the "org.jboss.narayana.arjunacore" that: starts the recovery manager, begins a BasicAction, adds a BasicRecord to the transaction and then commits the BasicAction. I used a subsytem to demonstrate this as I wanted something low level that would match closely enough, how Transactional MSC would use transactions. 

This is just a quick prototype, I've not considered what further configuration of ArjunaCore should be done. Neither have I ensured other services, such as the transaction reaper, are running. I can work on this, if we decide this is the right approach to take (initially).


[1] https://github.com/paulrobinson/jboss-as/tree/TxMSC_arjuna_module (https://github.com/paulrobinson/jboss-as/tree/TxMSC_arjuna_module)
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