public bool PushMessage(TaskQueue.Providers.TaskMessage msg)
{
ChannelAnteroom ch = MessageChannels.GetAnteroomByMessage(msg.MType);
if (ch == null)
{
logger.Warning("push: unknown message type: {0}", msg.MType);
return false;
}
//ch.ChannelStatsIn.inc();
//return true;
msg.AddedTime = DateTime.UtcNow;
bool status = ch.Push(msg);
if (status)
{
ch.ChannelStatsIn.inc();
}
else
{
logger.Warning("push: can't enqueue message mtype: {0}, channel: {1}", msg.MType, ch.ChannelName);
}
// TODO: replace with suspend interface
//var x = from t in Tasks
// where t.ChannelName == ch.ChannelName
// select t;
//foreach (QueueTask t in x)
//{
// t.Suspended = false;
//}
// ~
return status;
}
public TaskMessage Pop(string channel)
{
ChannelAnteroom ch = MessageChannels.GetAnteroom(channel);
TaskQueue.Providers.TaskMessage item = ch.Next();
if (item == null)
return null;
item.Processed = true;
item.ProcessedTime = DateTime.UtcNow;
ch.Update(item);
return item;
}
private int ConsumerEntry(QueueTask task)
{
//Console.WriteLine("consumer: {0}", task.ChannelName);
//QueueTask task = pi as QueueTask;
IBrokerModule mod = task.Module;
// Pop item from queue
ChannelAnteroom ch = task.Anteroom;//MessageChannels.GetAnteroom(task.ChannelName);
if (ch.InternalEmptyFlag)
{
return(1);
}
TaskQueue.Providers.TaskMessage message = ch.Next();
if (message == null)
{
return(1);
}
//if (message == null)
//{
// // this must be replaced with better way communication with message bus
// Console.WriteLine("Consumer empty, suspended: {0}", task.ChannelName);
// task.Suspended = true;
// return;
//}
TaskQueue.Providers.TaskMessage item = message;
bool updated = ((IModConsumer)mod.MI).Push(task.Parameters, ref message);
if (updated)
{
message.Processed = true;
message.ProcessedTime = DateTime.UtcNow;
}
updated = updated || (!Object.ReferenceEquals(item, message));// model is modified
if (updated)
{
ch.Update(message);
}
ch.ChannelStatsOut.inc(); // inc stats
return(0);
}
public void AddMessageChannel(MessageChannel mc)
{
lock (MChannelsList)
{
MessageChannels.Add(mc.UniqueName, MChannelsList.Count);
//MessageChannelsModels.Add(mc.MessageType, MChannelsList.Count);
MChannelsList.Add(mc);
}
ChannelAnteroom ante = GetAnteroom(mc.UniqueName);
try
{
ante.Queue.OptimiseForSelector();
}
catch (Exception e)
{
logger.Exception(e, "OptimiseForSelector", "error in selector optimisation");
}
}
public ChannelAnteroom GetAnteroom(string name)
{
ChannelAnteroom anteroom = null;
if (Anterooms.TryGetValue(name, out anteroom))
{
return(anteroom);
}
else
{
MessageChannel mc = GetInstanceByName(name);
anteroom = new ChannelAnteroom();
anteroom.ChannelName = name;
TaskQueue.Providers.QueueConnectionParameters qparams = Connections[mc.ConnectionName];
anteroom.Queue = qparams.QueueInstance;
//anteroom.Queue = (TaskQueue.ITQueue)Activator.CreateInstance(qparams.QueueInstance.GetType()); //Queues.GetQueue(mc.QueueName);
try
{
anteroom.Queue.InitialiseFromModel(new RepresentedModel(typeof(TaskMessage)), qparams);// schema free only queue providers (mongodb)
// set selector to queue
anteroom.Queue.SetSelector(mc.consumerSelector);
}
catch (QueueConnectionException e)
{
logger.Warning(e.Message);
}
catch (Exception e)
{
logger.Exception(e, "Anterooms.Add", "anteroom initialisation error");
}
Anterooms.Add(name, anteroom);
return(anteroom);
}
return(null);
}
public long GetChannelOccupancy(string channelName)
{
ChannelAnteroom ch = MessageChannels.GetAnteroom(channelName);
return ch.CountNow;
}
// channels
public long GetChannelLevel(string messageType)
{
ChannelAnteroom ch = MessageChannels.GetAnteroomByMessage(messageType);
return ch.Queue.GetQueueLength();
}
public ChannelAnteroom GetAnteroom(string name)
{
ChannelAnteroom anteroom = null;
if (Anterooms.TryGetValue(name, out anteroom))
{
return anteroom;
}
else
{
MessageChannel mc = GetInstanceByName(name);
anteroom = new ChannelAnteroom();
anteroom.ChannelName = name;
TaskQueue.Providers.QueueConnectionParameters qparams = Connections[mc.ConnectionName];
anteroom.Queue = qparams.QueueInstance;
//anteroom.Queue = (TaskQueue.ITQueue)Activator.CreateInstance(qparams.QueueInstance.GetType()); //Queues.GetQueue(mc.QueueName);
try
{
anteroom.Queue.InitialiseFromModel(new RepresentedModel(typeof(TaskMessage)), qparams);// schema free only queue providers (mongodb)
// set selector to queue
anteroom.Queue.SetSelector(mc.consumerSelector);
}
catch (QueueConnectionException e)
{
logger.Warning(e.Message);
}
catch (Exception e)
{
logger.Exception(e, "Anterooms.Add", "anteroom initialisation error");
}
Anterooms.Add(name, anteroom);
return anteroom;
}
return null;
}
