public VoteBackStruct voteForMe(int term, int CandidateId, int lastLogIdx, int lastLogTerm)
{
lock (this)
{
VoteBackStruct ret = new VoteBackStruct();
ret.Term = term_;
ret.VoteGranted = false;
if (term > term_) // recv higher term request
{
Console.WriteLine(String.Format("{0} [{1}] voted in term {2}, recv_term {3} from {4}, isVoteInThisTerm_ {5}!", id, role, term, term, CandidateId, isVoteInThisTerm_));
role_ = NodeRole.Follower;
state_ = ServerState.HigherTerm;
term_ = term;
isVoteInThisTerm_ = false;
if (lastLogTerm < getLastLogTerm()) //log最后的term比我小
{
return(ret);
}
if (lastLogTerm == getLastLogTerm() && lastLogIdx < log_.Count) //log最后的term和我一样，但是log没有我多
{
return(ret);
}
//if(timeout_timer_ != null)
// timeout_timer_.Change(curRandTime_, curRandTime_);
ret.VoteGranted = isVoteInThisTerm_ = true;
return(ret);
}
else
{
ret.VoteGranted = false;
return(ret);
}
}
}
public ElectionState candidate_vote_sender()
{
LOG(String.Format("term {0} calling for votes", term));
int alive_num = 1;
int votes = 1;
VoteBackStruct ret = new VoteBackStruct();
foreach (ClusterNodeSocket node in ExClusterNodeList_)
{
try
{
if (node.transport.IsOpen)
{
++alive_num;
ret = node.client.voteForMe(term, id, log_.Count, getLastLogTerm());
if (ret.VoteGranted)
{
++votes;
}
if (ret.Term > term)
{
return(ElectionState.HigherTerm);
}
//Console.WriteLine(String.Format("{0} [{1}] term {2} calling for votes", ID, curRole_, curTerm_));
}
}
catch (Exception ex)
{
LOG(String.Format("get votes error! {0} {1}", leader_should_stop_, ex.Message));
if (leader_should_stop_)
{
return(ElectionState.Stop);
}
}
}
LOG(String.Format("get votes {0}", votes));
if (votes > alive_num / 2)
{
return(ElectionState.ElectionSuccess);
}
else
{
return(ElectionState.ElectionFailed);
}
}
