//subscribe to a collection shard (pull)
public virtual void Subscribe(SendChannel <T> channel, Task task)
{
//dependes - list people the need to run next
dependents = dependents.Concat(new Task[] { task }).ToArray();
//where to send to stuff
outputChannels = outputChannels.Concat(new SendChannel <T>[] { channel }).ToArray();
var tempMessage = new Message <T>(null);
//ask current content for that shard
//contentes - virtual method each one has to define to create the diff.
foreach (var record in Contents())
{
//Console.WriteLine("Sending {0}", record);
//if all the message is ready to send - fill up all the message in payload
if (tempMessage.length == tempMessage.payload.Length)
{
channel.Send(ref tempMessage);
tempMessage.length = 0;
}
tempMessage.payload[tempMessage.length++] = record;
}
//send even if the payload is not full...
tempMessage.status = MessageStatus.FinalNonEmpty;
//send to every single channel
channel.Send(ref tempMessage);
}
public void Send(ref Message <Weighted <T> > message)
{
newMessage.status = message.status;
for (int i = 0; i < message.length; i++)
{
newMessage.payload[newMessage.length++] = new Weighted <R>(selector(message.payload[i].record), message.payload[i].weight);
}
baseChannel.Send(ref newMessage);
newMessage.length = 0;
}
public void Send(ref Message <Weighted <T> > message)
{
for (int i = 0; i < message.length; i++)
{
var results = selector(message.payload[i].record).ToArray();
for (int j = 0; j < results.Length; j++)
{
if (newMessage.length == newMessage.payload.Length)
{
newMessage.status = MessageStatus.Normal;
baseChannel.Send(ref newMessage);
newMessage.length = 0;
}
newMessage.payload[newMessage.length++] = new Weighted <R>(results[j], message.payload[i].weight / results.Length);
}
}
newMessage.status = message.status;
baseChannel.Send(ref newMessage);
newMessage.length = 0;
}
public void Send(ref Message <Weighted <T> > message)
{
newMessage.status = message.status;
for (int i = 0; i < message.length; i++)
{
if (predicate(message.payload[i].record))
{
newMessage.payload[newMessage.length++] = message.payload[i];
}
}
baseChannel.Send(ref newMessage);
newMessage.length = 0;
}
public void Send(ref Message <Weighted <T> > message)
{
// tamper with the message payload
for (int i = 0; i < message.length; i++)
{
message.payload[i].weight *= -1;
}
baseChannel.Send(ref message);
// un-tamper with the message payload
for (int i = 0; i < message.length; i++)
{
message.payload[i].weight *= -1;
}
}
public static void Main()
{
var conn = new RabbitMQConnection("amqp://localhost");
var sendChannel = new SendChannel(conn);
int i = 0;
while (i++ < 30)
{
Thread.Sleep(1000);
Console.WriteLine(" [x] Sent {0}", i);
sendChannel.Send(i, null);
}
Console.WriteLine(" Press [enter] to exit.");
Console.ReadLine();
}
public void Send(Message m) => SendChannel.Send(m);