On 20/11/2007, James Strachan <[EMAIL PROTECTED]> wrote: > On 20/11/2007, Rob Davies <[EMAIL PROTECTED]> wrote: > > ActiveMQ 5 requires Java 5 - so this won't be a problem for AgentSmth > > We just need to override the Smith.redefineClass() method in a > > derived class to add some eventing to stop the routes and reload the > > classes > > That should work! :) > > If it doesn't - or we hit some limitation of AgentSmith (e.g. I've > seen talk of AgentSmith not reloading stuff if you add new methods or > fields to a class), I guess we could always build our own little > reloading classloader thingy? > > e.g. we could do something like this in camel... > > <camelContext> > <rules dir="lib/rules" package="org.foo"/> > </camelContext> > > which would then create a single ClassLoader for all the *.jar files > in that directory and then load and activate all the rules in there. > > If any of the jars change, we could stop all those rules, ditch the > classloader and reload all the jars again and re-activate the rules > again. > > I guess AgentSmith might be more clever and realise just which rules > have actually changed maybe? I wonder if eclipse has any clever > hot-swap ninja we could reuse?
I was chatting with Guillaume on IRC and he mentioned this lovely looking tool... http://www.aqute.biz/Code/FileInstall which can monitor a directory for OSGi bundles (jars really) and install+start then stop+uninstall & reload things if the jars change. So I guess one neat solution could be to allow ActiveMQ to boot up an OSGi container (say Felix) with spring+osgi and FileInstall installed. Then if Java routing rules were put into OSGi bundles (i.e. a jar with the OSGi metadata), spring-osgi should auto-boot up the bundle and activate the routing rules when the jar loads - and stop the routing rules when the bundle is stopped & uninstalled. It'd be nice if we could get the FileInstall to also allow any spring.xml to be added to the deploy directory & for it to be reloaded; then folks could just drop in routing rules as spring.xml files; or edit them to have things reload. i.e. kinda treating any spring.xml file as a kinda bundle with no Java code :) -- James ------- http://macstrac.blogspot.com/ Open Source Integration http://open.iona.com
