public void fullReplication(ReplicatedInfo replicatedInfo)
{
this.replicatedInfo = replicatedInfo;
if (!beating)
{
Console.WriteLine("I AM NOW SECONDARY URAYYY");
lastPrimaryHeartBeat = DateTime.Now;
// start heartbeats
heartbeatDelegate del = new heartbeatDelegate(heartbeat);
del.BeginInvoke(null, null);
beating = true;
}
}
public WorkerJobTracker(int id, string serviceURL, TcpChannel clientChannel)
{
this.id = id;
this.serviceURL = serviceURL;
this.JTURL = serviceURL;
this.isJT = true;
this.tcpChannel = clientChannel;
replicatedInfo = new ReplicatedInfo();
replicatedInfo.workers = new Dictionary <int, string>();
jobTracker = (IWorkerJobTracker)Activator.GetObject(
typeof(IWorkerJobTracker), serviceURL);
addWorker(id, serviceURL);
heartbeatDelegate del = new heartbeatDelegate(heartbeat);
del.BeginInvoke(null, null);
}
public void heartbeat()
{
JTsemaphore.WaitOne();
JTsemaphore.Release();
//Console.WriteLine("heartBeat");
if (isJT && replicatedInfo.workers.Count > 1 && secondary == null && !outOfJT)
{
int newSecondaryID = id + 1;
if (newSecondaryID > replicatedInfo.workers.Count)
{
newSecondaryID = 1;
}
IWorkerJobTracker worker = (IWorkerJobTracker)Activator.GetObject(typeof(IWorkerJobTracker), replicatedInfo.workers[newSecondaryID]);
worker.fullReplication(replicatedInfo);
secondaryID = newSecondaryID;
secondary = worker;
Console.WriteLine("creating secondary");
}
else if (isJT && secondary != null)
{
Console.WriteLine("sending heartbeat");
sendHeartbeatDelegator del = new sendHeartbeatDelegator(secondary.sendHeartbeat);
IAsyncResult result = del.BeginInvoke(null, null);
DateTime time = DateTime.Now;
while (!result.IsCompleted)
{
if ((DateTime.Now - time).TotalMilliseconds > HEARTBEATTIMEOUT * 1000)
{
//replace secondary
Console.WriteLine("RIP secondary Count: " + replicatedInfo.workers.Count);
if (replicatedInfo.workers.Count < 3)
{
outOfJT = true;
secondary = null;
secondaryID = 0;
break;
}
else
{
int newSecondaryID = id + 2;
if (newSecondaryID > replicatedInfo.workers.Count)
{
newSecondaryID = 1;
}
IWorkerJobTracker worker = (IWorkerJobTracker)Activator.GetObject(typeof(IWorkerJobTracker), replicatedInfo.workers[newSecondaryID]);
worker.fullReplication(replicatedInfo);
secondaryID = newSecondaryID;
secondary = worker;
Console.WriteLine("created new secondary");
break;
}
}
}
if (result.IsCompleted)
{
bool stillprimary = del.EndInvoke(result);
if (!stillprimary)
{
replicatedInfo = null;
isJT = false;
secondary = null;
beating = false;
Console.WriteLine("Lost primary :C ");
return;
}
}
}
else if (!isJT && secondary == null)
{
Console.WriteLine("checking on primary " + (DateTime.Now - lastPrimaryHeartBeat).TotalMilliseconds);
if ((DateTime.Now - lastPrimaryHeartBeat).TotalMilliseconds > HEARTBEATTIMEOUT * 1000)
{
areYouAliveDelegate del = new areYouAliveDelegate(jobTracker.areYouAlive);
IAsyncResult result = del.BeginInvoke(id, null, null);
DateTime time = DateTime.Now;
while (!result.IsCompleted)
{
if ((DateTime.Now - time).TotalMilliseconds > HEARTBEATTIMEOUT / 2 * 1000)
{
// replace primary
Console.WriteLine("RIP PRIMARY Count: " + replicatedInfo.workers.Count);
if (replicatedInfo.workers.Count < 3)
{
outOfJT = true;
isJT = true;
foreach (string w in replicatedInfo.workers.Values)
{
((IWorkerJobTracker)Activator.GetObject(typeof(IWorkerJobTracker), w)).newJobTracker(serviceURL);
}
Console.WriteLine("created no secondary");
break;
}
else
{
int newSecondaryID = id + 1;
if (newSecondaryID > replicatedInfo.workers.Count)
{
newSecondaryID = 1;
}
IWorkerJobTracker worker = (IWorkerJobTracker)Activator.GetObject(typeof(IWorkerJobTracker), replicatedInfo.workers[newSecondaryID]);
worker.fullReplication(replicatedInfo);
secondaryID = newSecondaryID;
secondary = worker;
isJT = true;
foreach (string w in replicatedInfo.workers.Values)
{
((IWorkerJobTracker)Activator.GetObject(typeof(IWorkerJobTracker), w)).newJobTracker(serviceURL);
}
Console.WriteLine("created new secondary");
break;
}
}
}
if (result.IsCompleted)
{
bool stillSecondary = del.EndInvoke(result);
if (!stillSecondary)
{
beating = false;
replicatedInfo = null;
return;
}
}
}
}
Task.Delay(TimeSpan.FromSeconds(heartbeatDelay)).Wait();
heartbeat();
}
