private void ShiftToRegLeader()
{
Log.Debug("ELECTIONS: (V={lastAttemptedView}) SHIFT TO REG_LEADER.", _lastAttemptedView);
_state = ElectionsState.Leader;
SendProposal();
}
private void ShiftToAcceptor()
{
Log.Information("ELECTIONS: (V={lastAttemptedView}) SHIFT TO REG_ACCEPTOR.", _lastAttemptedView);
_state = ElectionsState.Acceptor;
_lastInstalledView = _lastAttemptedView;
}
private void ShiftToRegNonLeader()
{
Log.Debug("ELECTIONS: (V={lastAttemptedView}) SHIFT TO REG_NONLEADER.", _lastAttemptedView);
_state = ElectionsState.NonLeader;
_lastInstalledView = _lastAttemptedView;
}
public void Handle(LeaderDiscoveryMessage.LeaderFound message)
{
if (_leader != null || _lastElectedLeader != null || _state != ElectionsState.Idle)
{
return;
}
Log.Information("ELECTIONS: Existing LEADER was discovered, updating information. M=[{leaderInternalHttp},{leaderId:B}])", message.Leader.InternalHttp, message.Leader.InstanceId);
_leader = message.Leader.InstanceId;
_lastElectedLeader = message.Leader.InstanceId;
_lastAttemptedView = 0;
_lastInstalledView = 0;
_state = ElectionsState.Acceptor;
}
private void ShiftToLeader()
{
if (_nodeInfo.IsReadOnlyReplica)
{
Log.Information("ELECTIONS: (V={lastAttemptedView}) NOT SHIFTING TO REG_LEADER AS I'M READONLY.",
_lastAttemptedView);
return;
}
Log.Information("ELECTIONS: (V={lastAttemptedView}) SHIFT TO REG_LEADER.", _lastAttemptedView);
_state = ElectionsState.Leader;
SendProposal();
}
public void Handle(LeaderDiscoveryMessage.LeaderFound message)
{
if (_leader != null || _lastElectedLeader != null || _state != ElectionsState.Idle)
{
return;
}
if (_nodeInfo.IsReadOnlyReplica)
{
Log.Verbose("ELECTIONS: THIS NODE IS A READ ONLY REPLICA.");
}
Log.Information("ELECTIONS: Existing LEADER was discovered, updating information. M=[{leaderInternalHttp},{leaderId:B}])", message.Leader.InternalHttp, message.Leader.InstanceId);
_leader = message.Leader.InstanceId;
_lastElectedLeader = message.Leader.InstanceId;
_lastAttemptedView = 0;
_lastInstalledView = 0;
_state = ElectionsState.Acceptor;
}
private void ShiftToLeaderElection(int view)
{
Log.Debug("ELECTIONS: (V={view}) SHIFT TO LEADER ELECTION.", view);
_state = ElectionsState.ElectingLeader;
_vcReceived.Clear();
_prepareOkReceived.Clear();
_lastAttemptedView = view;
_masterProposal = null;
_master = null;
_acceptsReceived.Clear();
var viewChangeMsg = new ElectionMessage.ViewChange(_nodeInfo.InstanceId, _nodeInfo.InternalHttp, view);
Handle(viewChangeMsg);
SendToAllExceptMe(viewChangeMsg);
_publisher.Publish(TimerMessage.Schedule.Create(LeaderElectionProgressTimeout,
_publisherEnvelope,
new ElectionMessage.ElectionsTimedOut(view)));
}
public void Handle(SystemMessage.BecomeShuttingDown message)
{
_state = ElectionsState.Shutdown;
}