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Ronald,
Ronald Klop wrote:
| In sessionDestroyed I register the user as logged out.
|
| How can I know if sessionDestroyed is called from session.invalidate()
| from the real expiration of the session or shutdown of one cluster node?
Are your shutdowns typically planned? If so, you could stick something
in the session like "shuttingDown192.168.1.123" and then check for that
key when you are processing a "session destroyed" event. Just ignore
such events from the current machine's IP address.
Or, you could even do something like this:
1. Before shutdown, place a "shutting down" key in the application scope.
2. Modify your sessionDestroyed code to do this:
public void sessionDestroyed(HttpSessionEvent se)
{
~ ServletContext application = se.getSession().getServletContext();
~ if(null != application.getAttribute("SHUTTING_DOWN"))
~ return;
~ // Otherwise, process the shutdown normally.
}
This should work given that the application scope is not distributed
across nodes in the cluster. You just put your node in a "shutdown"
state and then ignore all events (or any you care to ignore).
Hope that helps,
- -chris
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