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);
}