On 21/04/2010 00:26, Anand HS wrote: > Hi, > I have a webapplication deployed in tomcat and have been asked to develop an > auto updater that can grab a new update and apply the updates to my webapp. > I want to ask the community to see if there are 'hooks' tomcat provides to > achieve this.
No hooks. > In essence here is what Im expecting to achieve - > > 1. A simple agent ( can be a java program inside my web app itself ) senses > there is an update. OK so far. > 2. when an update is available, it stops the tomcat server. Possible, but somewhat unwise. You can update a webapp without restarting Tomcat. > 3. Applies the update ( similar to redeploy along with configuration file > changes ) . Not too complicated to replace a file, if you have a program running. > 4. restarts the tomcat. If the agent runs inside webapp (or Tomcat), then it's not running at this point so it can't restart Tomcat. > Some of the ideas Im after are - > > 1. Deploy my updater agent outside of tomcat and hence it can stop and start > the tomcat servers. If you want to restart the servers themselves, the agent will need to be running outside the container, yes. > 2. Have the updater agent as part of my webapp itself and with the help of > Tomcat API ( ? ) , restart the application. What would such an API do? p > I need advice from the community on other approaches as well as any support > tomcat provides out of the box. > > Thanks, > Anand >
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