public StateLogEntrySuggestion GetNextStateLogEntrySuggestion(StateLogEntryRequest req)
{
StateLogEntrySuggestion le = new StateLogEntrySuggestion()
{
LeaderTerm = this.stateMachine.NodeTerm
};
ulong prevId = 0;
ulong prevTerm = 0;
StateLogEntry entry = null;
if (req.StateLogEntryId == 0)
{
//send first record to sync
var key = GetKey(0, 0);
Slice value;
var iter = db.NewIterator(ReadOptions.Default);
iter.Seek(key);
iter.Next();
while (iter.Valid())
{
entry = StateLogEntry.BiserDecode(value.ToArray());
if (entry.IsCommitted)
{
break;
}
iter.Next();
}
}
else
{
var key = GetKey(req.StateLogEntryTerm, req.StateLogEntryId);
Slice value;
var iter = db.NewIterator(ReadOptions.Default);
iter.Seek(key);
var lastOne = iter.Value();
iter.Next();
while (iter.Valid())
{
entry = StateLogEntry.BiserDecode(value.ToArray());
if (entry.Index > req.StateLogEntryId)
{
var oldEntry = StateLogEntry.BiserDecode(lastOne.ToArray());
prevId = oldEntry.Index;
prevTerm = oldEntry.Term;
}
}
}
if (entry != null)
{
le.StateLogEntry = entry;
entry.PreviousStateLogId = prevId;
entry.PreviousStateLogTerm = prevTerm;
le.IsCommitted = entry.IsCommitted;
return(le);
}
else
{
return(null);
}
}
/// <summary>
/// +
/// Can be null.
/// Must be called inside of operation lock.
/// </summary>
/// <param name="logEntryId"></param>
/// <param name="LeaderTerm"></param>
/// <returns></returns>
public StateLogEntrySuggestion GetNextStateLogEntrySuggestionFromRequested(StateLogEntryRequest req)
{
StateLogEntrySuggestion le = new StateLogEntrySuggestion()
{
LeaderTerm = rn.NodeTerm
};
return(le);
}
public StateLogEntrySuggestion GetNextStateLogEntrySuggestion(StateLogEntryRequest req)
{
StateLogEntrySuggestion le = new StateLogEntrySuggestion()
{
LeaderTerm = this.stateMachine.NodeTerm
};
ulong prevId = 0;
ulong prevTerm = 0;
StateLogEntry entry = null;
if (req.StateLogEntryId == 0)
{
//send first record to sync
entry = list.Find(s => s.IsCommitted == true);
}
else
{
for (int index = 0; index < list.Count; index++)
{
if (list[index].Index > req.StateLogEntryId)
{
//find next one and set preview value
if (index > 0)
{
prevId = list[index - 1].Index;
prevTerm = list[index - 1].Term;
entry = list[index];
break;
}
}
}
}
if (entry != null)
{
le.StateLogEntry = entry;
entry.PreviousStateLogId = prevId;
entry.PreviousStateLogTerm = prevTerm;
le.IsCommitted = entry.IsCommitted;
return(le);
}
else
{
return(null);
}
}
public async Task OnRecieve(IChannelHandlerContext context, string msgstr)
{
//
if (!string.IsNullOrEmpty(msgstr))
{
//RaftCommand msgObj = Newtonsoft.Json.JsonConvert.DeserializeObject<RaftCommand>(msgstr, new JsonSerializerSettings()
//{
// NullValueHandling = NullValueHandling.Ignore,
// TypeNameHandling = TypeNameHandling.All,
// TypeNameAssemblyFormatHandling = TypeNameAssemblyFormatHandling.Full
//}
//);
int index = msgstr.IndexOf(',');
string num = msgstr.Substring(0, index);
string base64 = msgstr.Substring(index + 1);
byte[] data = Convert.FromBase64String(base64);
RaftCommand cmd = new RaftCommand();
cmd.Code = Convert.ToInt32(num);
switch (cmd.Code)
{
case RaftCommand.Handshake:
cmd.Message = TcpMsgHandshake.BiserDecode(data);
break;
case RaftCommand.HandshakeACK:
cmd.Message = TcpMsgHandshake.BiserDecode(data);
break;
case RaftCommand.RaftMessage:
cmd.Message = TcpMsgRaft.BiserDecode(data);
TcpMsgRaft t = (TcpMsgRaft)cmd.Message;
switch (t.RaftSignalType)
{
case eRaftSignalType.LeaderHearthbeat:
t.orginalObject = LeaderHeartbeat.BiserDecode(t.Data);
break;
case eRaftSignalType.CandidateRequest:
t.orginalObject = CandidateRequest.BiserDecode(t.Data);
break;
case eRaftSignalType.StateLogEntryAccepted:
t.orginalObject = StateLogEntryApplied.BiserDecode(t.Data);
break;
case eRaftSignalType.StateLogEntryRequest:
t.orginalObject = StateLogEntryRequest.BiserDecode(t.Data);
break;
case eRaftSignalType.StateLogEntrySuggestion:
t.orginalObject = StateLogEntrySuggestion.BiserDecode(t.Data);
break;
case eRaftSignalType.StateLogRedirectRequest:
t.orginalObject = StateLogEntryRedirectRequest.BiserDecode(t.Data);
break;
case eRaftSignalType.VoteOfCandidate:
t.orginalObject = VoteOfCandidate.BiserDecode(t.Data);
break;
}
break;
case RaftCommand.FreeMessage:
cmd.Message = TcpMsg.BiserDecode(data);
break;
}
this.packetParser(cmd as RaftCommand);
}
}
