Re: [Quickfix-users] Dynamic loading of cfg files

[<je...@gm...>]

Hello,

i'm using JBOSS with QF as ORS (Order Routing System) currently over two
years. Yes, the intergration was not easy (JMX, MBean, JCA, JNI, ..) but i
found a way how to bring it to fly.

If somebody needs some help, let me know..

cheers, 
Juergen jetmar


> > We're you planning on managing all of your sessions within one or 
> > multiple SocketInitiator objects? You can't dynamically add sessions to 
> > a SocketInitiator object, but you can certainly create as many of these 
> > objects as you need. And as Scott pointed out, you can construct the 
> > settings with a StringBuffer.
> 
> So we did it within our java processes.
> 
> > Can you also elaborate in what ways you 
> > want to change an active session? Probably the only way to do this right
> > now would be to destroy the SocketInitiator and create a new one in it's
> > place with the same session but different settings. We may need to do 
> > something that will clean up the resources, because I believe some of 
> > them may be locked until the initiator gets garbage collected. This 
> > should be easy enough to address.
> 
> Oren, we are talking here about some prerequisites of an JBoss 
> integration (I conclude that from the term MBean -- Am I right, 
> Shamanth?) This is quite on top of my wish (and todo) list: To integrate 
> the QuickFIX engine into JBoss, probably using detached invoker for 
> different transport levels and forwarding the application level messages 
> to JMS queues or Message Driven Beans.
> 
> So far I did not try to run QuickFIX as a JBoss, but other in this list 
> probably did it (and had success). JNI and C++ shared libs could be a 
> problem here. There is only one instance of the quickfix shared libs 
> used from several places inside the JBoss JVM. The shared libs are 
> unloaded as early as the java classloader which loaded them is garbage 
> collected. So it is important to cleanup carefully, esp. the threading 
> stuff.
> 
> In addition, it would be useful to decouple the java Message and Field 
> classes from the underlying JNI layer. So the Java FIX object could be 
> serialized and sent (e.g. using JMS) to remote instances with an 
> underlying JNI implementation. Do you think this is feasible?
> 
> Shamanth, Scott and others: Are you using QuickFIX inside JBoss? Which 
> versions? How are your experiences and how did you integrate QF into the 
> JBoss framework?
> 
> Cheers, Jörg
> 
> > 
> > --oren
> > 
> > On Jun 9, 2004, at 11:31 AM, Shamanth wrote:
> > 
> > 
> > 
> >     Hi
> > 
> >     I have a requirement, where we want to change or add new sessions or
> >     providers dynamically. Or I would like to change the port for a
> >     given provider. We are going to do this using an MBean. Basically we
> >     will have an MBean which will read the SESSION and DEFAULT
> >     properties from a custom property file.
> > 
> >     Problem:
> >     We want to create a new SocketInitiator for each provider. Since a
> >     SocketInitiator expects a SessionSettings object we would ideally
> >     like to create a new SessionSettings object dynamically. But as the
> >     constructors of a SessionSettings object expects a inputstream, I
> >     don't see how we could do this.
> > 
> >     I would like a empty default constructor for SessionSettings and
> >     then we use the set methods to set any perticular property. Do you
> >     have any plans to incorporate this in your future releases.
> > 
> >     Or is there an alternate way of acheiving the same result.
> > 
> >     I am using Java version of quickFix.
> > 
> >     thanks
> >     R Shamanth
> > 
> > 
> > 
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> 
> 
> -- 
> Joerg Thoennes
>                                 http://macd.com
> Tel.: +49 (0)241 44597-24      Macdonald Associates GmbH
> Fax : +49 (0)241 44597-10      Lothringer Str. 52, D-52070 Aachen
> 
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