On 11/16/2011 9:27 PM, Greg Trasuk wrote:
I'm pretty close to being able to host "ServiceStarter" services inside the container, such that the container hosts its own infrastructure (reggie, mahalo, outrigger, etc). Next step will be to make the security infrastructure work, then setup monitoring of a deployment directory such that applications can be dynamically deployed/undeployed (a-la Tomcat or JBoss) by copying them into the deployment directory. I'll keep you posted... Greg.
As you are working on the deployment mechanisms and deployment detection, think about how to keep partial downloads from being loaded and then aborted. Tomcat, in particular, has a behavior that when I just scp a .war into the WEB-INF tree, if it scans while the copy is in progress, and then starts loading before the copy finishes, two bad things happen; 1) the class loading aborts with an EOF or other error due to the .WAR file not being complete, and 2) Tomcat will ignore the final, complete download if it finishes cleaning up after the download completes. You then have to either restart tomcat, or try and copy the .WAR again. The service disappears while you straighten things out. The update should try and provide an atomic switch between the old version and the new version without any loss of service.
Gregg
