/** Removes the endpoint from Gossip but retains endpoint state */
public void removeEndpoint(InetAddress endpoint) {
// do subscribers first so anything in the subscriber that depends on gossiper state won't get
// confused
for (IEndpointStateChangeSubscriber subscriber : subscribers_) subscriber.onRemove(endpoint);
liveEndpoints_.remove(endpoint);
unreachableEndpoints_.remove(endpoint);
// do not remove endpointState until aVeryLongTime
FailureDetector.instance.remove(endpoint);
justRemovedEndpoints_.put(endpoint, System.currentTimeMillis());
}
void isAlive(InetAddress addr, EndpointState epState, boolean value) {
epState.isAlive(value);
if (value) {
liveEndpoints_.add(addr);
unreachableEndpoints_.remove(addr);
for (IEndpointStateChangeSubscriber subscriber : subscribers_)
subscriber.onAlive(addr, epState);
} else {
liveEndpoints_.remove(addr);
unreachableEndpoints_.put(addr, System.currentTimeMillis());
for (IEndpointStateChangeSubscriber subscriber : subscribers_)
subscriber.onDead(addr, epState);
}
if (epState.isAGossiper()) return;
epState.isAGossiper(true);
}
void doNotifications(InetAddress addr, ApplicationState state, VersionedValue value) {
for (IEndpointStateChangeSubscriber subscriber : subscribers_) {
subscriber.onChange(addr, state, value);
}
}
/**
* This method is called whenever there is a "big" change in ep state (either a previously unknown
* node or a generation change for a known node). If the node is new, it will be initially marked
* as dead. It will be marked alive as soon as another piece of gossip arrives. On the other hand
* if the node is already known (generation change), we will immediately mark it alive.
*
* @param ep endpoint
* @param epState EndpointState for the endpoint
* @param isKnownNode is this node familiar to us already (present in endpointStateMap)
*/
private void handleMajorStateChange(InetAddress ep, EndpointState epState, boolean isKnownNode) {
endpointStateMap_.put(ep, epState);
isAlive(ep, epState, isKnownNode);
for (IEndpointStateChangeSubscriber subscriber : subscribers_) subscriber.onJoin(ep, epState);
}