RE: [Quickfix-developers] Dynamic allocation of incoming sessions?

[Steve B. <sb...@sm...>]

Graham and Dale and others,
=20
I've been considering this feature for QFJ. My current thinking is that
I'd create a new interface for a session definition repository. This
repository interface would support notifications for session definition
create, update and delete. SessionSettings would be refactored to
implement this interface. However, the implementation would only support
static init-time session definitions and the notification support would
not be used. The other QFJ classes would be modified to only use the
session repository interface. This would allow us to create alternative
dynamic session repositories using JDBC, LDAP, or whatever without
breaking the existing API. The acceptors and initiators would be
modified to respond to session definition change notifications so that
sessions could be created and deleted dynamically. I'm not sure yet
about the update. It may just be implemented as a session delete and
then create with the new configuration (for changing FIX version, data
dictionary, ...).
=20
This is the theory. I haven't created any prototypes yet. I'm definitely
interested in comments.
=20
Steve


________________________________

	From: qui...@li...
[mailto:qui...@li...] On Behalf Of
Dale Wilson
	Sent: Tuesday, May 09, 2006 3:43 PM
	To: Graham Miller
	Cc: qui...@li...
	Subject: Re: [Quickfix-developers] Dynamic allocation of
incoming sessions?
=09
=09
	Hi Graham,
=09
	I've looked into allowing dynamic configuration of sessions in
C++.  It look feasable, but certainly not easy.  Since my company's
business model  is doing sponsored work on open source projects, I
probably won't tackle it until/unless we can find someone to sponsor the
work.  I'd be interested to hear if Oren (or anyone else) has plans in
that direction.
=09
	Dale
=09
	Graham Miller wrote:=20

		QuickFIX Documentation:
http://www.quickfixengine.org/quickfix/doc/html/index.html=20
		QuickFIX Support:
http://www.quickfixengine.org/services.html=20
	=09
		Hello all,=20
		I was looking at the implementation of
DefaultSessionFactory, and=20
		thought it would be easy to subclass that to allow
dynamic=20
		configuration of sessions (that is, configuring sessions
on the fly=20
		based on parameters in a database or LDAP server at
connect time). However it appears that quickfix expects to find entries
for all the=20
		valid sessions in the configuration file, which is read
only once at=20
		startup.  Has anyone looked at making this more dynamic?
Is there any=20
		interest or opinions on how it should be done?=20
	=09
		For reference I'm looking only at the Quickfix/J code,
because I'm=20
		living in Java-land right now.=20
	=09
		graham=20
	=09
	=09
		-------------------------------------------------------=20
		Using Tomcat but need to do more? Need to support web
services, security?=20
		Get stuff done quickly with pre-integrated technology to
make your job easier=20
		Download IBM WebSphere Application Server v.1.0.1 based
on Apache Geronimo=20
=09
http://sel.as-us.falkag.net/sel?cmd=3Dk&kid=120709&bid&3057&dat=121642=20
		_______________________________________________=20
		Quickfix-developers mailing list=20
		Qui...@li...=20
=09
https://lists.sourceforge.net/lists/listinfo/quickfix-developers=20
	=09