/**
* Federation destroying is a bit of a catch-22. We need to connect to the channel that the
* federation is operating on in order to determine whether a federation is even active at all
* (which it may well not be). So in this case we connect to the channel and then if there is a
* federation running in there, we ask that it be destroyed by removing the contained FOM.
*
* <p>If there are members of the channel who are still currently federates, then this call will
* fail and thrown an exception.
*
* <p>**NOTE** If we ever ask to destroy a federation, we will automatically disconnect from the
* channel when done. Fair chance we don't care about it any more once we try a destroy.
*/
public void destroyFederation(DestroyFederation destroyMessage) throws Exception {
// connect to the channel if we are not already
Federation federation = findFederation(destroyMessage.getFederationName());
try {
federation.sendDestroyFederation();
} finally {
// We put this here because the above call may throw an exception if there
// are federates still connected (and thus it can't destroy the federation).
// That exception would in turn cascade out and prevent us from disconnecting
// unless we did something about it!
federation.disconnect();
federations.remove(federation);
}
}
/**
* <i>This method is called by the Portico infrastructure during shutdown.</i>
*
* <p>When the kernel is ready to shutdown, it will call this method, signalling to the connection
* that it should disconnect and do any shutdown and cleanup necessary.
*/
public void disconnect() throws JRTIinternalError {
if (this.running == false) {
logger.info("jgroups connection is already disconnected");
return;
}
logger.info("jgroups connection is disconnecting...");
// for each federation we're connected to, disconnect from it
for (Federation federation : federations.values()) federation.disconnect();
federations.clear();
logger.info("jgroups connection has disconnected");
}