private synchronized void addParticipant(String location) {
List<String> participants = state.getList(State.PARTICIPANTS);
if (!participants.contains(location)) {
participants.add(location);
long newRevision = revision.incrementAndGet();
state.updateFromObject(State.PARTICIPANTS, participants, newRevision);
sendStateToClients(state.getComponent(State.PARTICIPANTS));
}
}
/** This master should take over from an earlier master. */
public void resumeFrom(State lastKnownState, final int masterId) {
for (Component c : lastKnownState.getComponents()) {
updateRevision(c.getRevision());
}
state = lastKnownState;
this.masterId = masterId;
MasterTakeover takeover =
new MasterTakeover(state.getList(State.PARTICIPANTS), getMasterInfo());
new Thread(takeover).start();
}
private synchronized void removeParticipant(String url) {
List<String> participants0 = state.getList(State.PARTICIPANTS);
if (participants0.contains(url)) {
logger.info("removeParticipant({})", url);
participants0.remove(url);
long newRevision = revision.incrementAndGet();
state.updateFromObject(State.PARTICIPANTS, participants0, newRevision);
sendStateToClients(state.getComponent(State.PARTICIPANTS));
}
}
private void sendStateToClients(State.Component component) {
for (String clientLocation : state.getList(com.orbekk.same.State.PARTICIPANTS)) {
sendComponent(clientLocation, component);
}
}