// COORDINATION HANDLING
//============================================================================================================
public void startElection(boolean force) throws ChannelException {
synchronized (electionMutex) {
MemberImpl local = (MemberImpl)getLocalMember(false);
MemberImpl[] others = (MemberImpl[])membership.getMembers();
fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_START_ELECT,this,"Election initated"));
if ( others.length == 0 ) {
this.viewId = new UniqueId(UUIDGenerator.randomUUID(false));
this.view = new Membership(local,AbsoluteOrder.comp, true);
this.handleViewConf(this.createElectionMsg(local,others,local),local,view);
return; //the only member, no need for an election
}
if ( suggestedviewId != null ) {
if ( view != null && Arrays.diff(view,suggestedView,local).length == 0 && Arrays.diff(suggestedView,view,local).length == 0) {
suggestedviewId = null;
suggestedView = null;
fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_ELECT_ABANDONED,this,"Election abandoned, running election matches view"));
} else {
fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_ELECT_ABANDONED,this,"Election abandoned, election running"));
}
return; //election already running, I'm not allowed to have two of them
}
if ( view != null && Arrays.diff(view,membership,local).length == 0 && Arrays.diff(membership,view,local).length == 0) {
fireInterceptorEvent(new CoordinationEvent(CoordinationEvent.EVT_ELECT_ABANDONED,this,"Election abandoned, view matches membership"));
return; //already have this view installed
}
int prio = AbsoluteOrder.comp.compare(local,others[0]);
MemberImpl leader = ( prio < 0 )?local:others[0];//am I the leader in my view?
if ( local.equals(leader) || force ) {
CoordinationMessage msg = createElectionMsg(local, others, leader);
suggestedviewId = msg.getId();
suggestedView = new Membership(local,AbsoluteOrder.comp,true);
Arrays.fill(suggestedView,msg.getMembers());