Stop deployment if application specific property is not set.

[klind]

Hi, I have a servlet that does some initialisation in the init method, it read properties from a property file.

I would like to stop the deployment if some error occurs, like some property is missing in the file.

Is there a nice way to do that ?

[jaikiran]

Well, the mere fact that your servlet was invoked is a sign that the deployment has completed. So there's nothing you can do to stop it. But anyway, what you are trying to do doesn't look right. Why do you want to stop the deployment from within a servlet?

[sfcoy]

One possible solution could be to implement a javax.servlet.ServletContextListener and load your properties file there.

Additionally, you could perform whatever validation that you deem necessary and throw a java.lang.RuntimeException if it fails.

This will make the entire webapp unavailable.

[klind]

I guess the best solution is to provide a very good log information about the error, and throw a RuntimeException.

At least the person who will do the deploy will see the app deployment failed and then look in the log.

[nickarls]

Another option could be a subsystem/deployment processor (if the property file is included in the deployment archive). Could of course be overkill depending on the need.