private void ProcessTablePos(Message.TablePos msg) {
if (_peerTablePositions == null)
_peerTablePositions = new Dictionary<string, ulong>();
_peerTablePositions.Add(msg.Table, msg.Pos);
return;
}
private void ProcessStartStream(Message.StartStream msg) {
if (!IsStopping)
IsOkToStream = true;
return;
}
private void ProcessFilter(Message.Filter msg) {
if (msg.Tablenames != null && msg.Tablenames.Count > 0) {
if (_peerTableFilters == null) {
_peerTableFilters = new List<HashSet<string>>();
}
_peerTableFilters.Add(msg.Tablenames);
}
return;
}
private void ProcessOk(Message.Ok msg) {
if (State == RunState.Starting)
SetState(RunState.Running);
return;
}
private void ProcessOpenLog(Message.OpenLog msg) {
OpenLog().ContinueWith(AllLogsOpened);
return;
}
private void ProcessId(Message.Id msg) {
var peerGuid = Guid.Parse(msg.Guid);
if (peerGuid == Guid.Empty) {
Quit("GUID is empty");
return;
}
if (peerGuid == SelfGuid) {
Quit("GUID is my own");
return;
}
PeerDatabaseName = msg.DatabaseName;
PeerGuid = peerGuid;
PeerFirstUserOid = msg.FirstUserOid;
PeerLastUserOid = msg.LastUserOid;
// Peer object ID range must be either identical to ours
// (in a failover/backup scenario) or nonoverlapping.
if (PeerFirstUserOid != Db.Environment.FirstUserOid || PeerLastUserOid != Db.Environment.LastUserOid) {
if (PeerFirstUserOid > Db.Environment.LastUserOid || PeerLastUserOid < Db.Environment.FirstUserOid) {
if (PeerFirstUserOid >= PeerLastUserOid) {
Quit("OID range invalid");
return;
}
} else {
Quit("OID range overlap");
return;
}
}
OnIdentified?.Invoke();
if (!IsStopping) {
SendFilterState();
SendLastPositions();
Send(new Message.OpenLog());
}
return;
}
private void ProcessQuit(Message.Quit msg) {
Log(Logger.EntryKind.WsRecvCmd, "Quit: " + msg.Message);
if (SetState(RunState.Stopping)) {
Task.Delay(10 * 1000, CancellationToken).ContinueWith((t) => {
if (!IsCancellationRequested) {
Status = "Timeout waiting for close";
Stop();
}
});
}
return;
}
private void ProcessTransaction(Message.Transaction msg) {
if (!IsPeerGuidSet) {
Quit("peer GUID not set");
return;
}
ProcessIncomingTransaction(msg.LogReadResult);
if (State == RunState.Starting)
SetState(RunState.Running);
if (TransactionsReceived == 1 && !IsStopping)
Send(new Message.Ok());
return;
}
private void ProcessMessage(Message msg) {
if (msg is Message.Transaction) {
ProcessTransaction((Message.Transaction)msg);
return;
}
if (msg is Message.TablePos) {
ProcessTablePos((Message.TablePos)msg);
return;
}
if (msg is Message.Filter) {
ProcessFilter((Message.Filter)msg);
return;
}
if (msg is Message.Quit) {
ProcessQuit((Message.Quit)msg);
return;
}
if (msg is Message.Id) {
ProcessId((Message.Id)msg);
return;
}
if (msg is Message.Ok) {
ProcessOk((Message.Ok)msg);
return;
}
if (msg is Message.OpenLog) {
ProcessOpenLog((Message.OpenLog)msg);
return;
}
if (msg is Message.StartStream) {
ProcessStartStream((Message.StartStream)msg);
return;
}
Stop("unrecognized message " + msg.GetType().ToString());
}
private void Send(Message msg) {
_output.Enqueue(msg);
_outputSem.Release();
}