private void ProcOldMessages(CallContext cntx, SignalRMessageServiceProxy msgsvc)
{
var hsvc = new SignalRHostStateServiceProxy();
var host = hsvc.LoadEntityByNature(cntx, config.HostName, config.App.ID).SingleOrDefault();
if (host == null)
{
host = new SignalRHostState
{
HostName = config.HostName,
ApplicationID = config.App.ID,
LastMsgId = 0
};
var x = hsvc.AddOrUpdateEntities(cntx, new SignalRHostStateSet(), new SignalRHostState[] { host });
host = x.ChangedEntities[0].UpdatedItem;
}
DateTime dt = DateTime.UtcNow.AddHours(-config.TimeWindowInHours);
QueryExpresion qexpr = new QueryExpresion();
qexpr.OrderTks = new List <QToken>(new QToken[] {
new QToken {
TkName = "ID"
},
new QToken {
TkName = "desc"
}
});
qexpr.FilterTks = new List <QToken>(new QToken[] {
new QToken {
TkName = "ApplicationID == \"" + config.App.ID + "\" && ID > " + host.LastMsgId + " && TimeStamp > " + dt.Ticks
}
});
var msgs = msgsvc.QueryDatabaseLimited(cntx, new SignalRMessageSet(), qexpr, config.MaxBacklogMessages).ToArray();
if (msgs.Length > 0)
{
host.LastMsgId = msgs[0].ID;
LastMessageId = (ulong)host.LastMsgId;
IsLastMessageIdChanged = true;
foreach (var e in from d in msgs orderby d.ID ascending select d)
{
OnReceived(0, (ulong)e.ID, ScaleoutMessage.FromBytes(e.MesssageData));
}
}
}
private static void LastIdUpdateThread()
{
var hsvc = new SignalRHostStateServiceProxy();
SignalRHostStateSet set = new SignalRHostStateSet();
try
{
evt.Set();
while (true)
{
Thread.Sleep(1000 * config.HostStateUpdateIntervalInSeconds);
if (IsLastMessageIdChanged)
{
SignalRHostState host = new SignalRHostState
{
IsPersisted = true,
HostName = config.HostName,
ApplicationID = config.App.ID,
LastMsgId = (long)LastMessageId,
IsLastMsgIdModified = true
};
try
{
hsvc.AddOrUpdateEntities(Cntx, set, new SignalRHostState[] { host });
IsLastMessageIdChanged = false;
}
catch
{
}
}
}
}
finally
{
LastMessageIdUpdateThread = null;
}
}
private static void KeepAliveThread()
{
SignalRHostStateSet set = new SignalRHostStateSet();
try
{
evt.Set();
int failCount = 0;
var cntx = Cntx;
var hsvc = new SignalRHostStateServiceProxy();
var host = hsvc.LoadEntityByNature(cntx, config.HostName, config.App.ID).SingleOrDefault();
if (host == null)
{
host = new SignalRHostState
{
HostName = config.HostName,
ApplicationID = config.App.ID,
LastMsgId = 0
};
var x = hsvc.AddOrUpdateEntities(cntx, new SignalRHostStateSet(), new SignalRHostState[] { host });
host = x.ChangedEntities[0].UpdatedItem;
}
while (true)
{
Thread.Sleep(1000 * config.HostStateUpdateIntervalInSeconds);
hsvc = new SignalRHostStateServiceProxy();
if (IsLastMessageIdChanged)
{
host = new SignalRHostState
{
IsPersisted = true,
HostName = config.HostName,
ApplicationID = config.App.ID,
LastMsgId = (long)LastMessageId,
IsLastMsgIdModified = true
};
try
{
hsvc.AddOrUpdateEntities(cntx, set, new SignalRHostState[] { host });
IsLastMessageIdChanged = false;
if (failCount > 0)
{
Current.Subscribe();
failCount = 0;
}
}
catch
{
failCount++;
}
}
else
{
try
{
bool b = Current.PollMessages(cntx, LastMessageId);
if (b || (Current.lastSent - Current.lastReceived) > TimeSpan.FromSeconds(20) || failCount > 0)
{
Current.Subscribe();
failCount = 0;
}
}
catch
{
failCount++;
}
}
if (Current.CallbackFailed)
{
try
{
Current.Subscribe();
failCount = 0;
}
catch
{
failCount++;
}
}
}
}
finally
{
LastMessageIdUpdateThread = null;
}
}