static void Main(string[] args)
{
var broadcastBlock = new BroadcastBlock <int>(a => a);
broadcastBlock.Completion.ContinueWith(a => Console.WriteLine("broadcastBlock completed"));
var a1 = new TransformBlock <int, int>(n => {
Console.WriteLine($"Message {n} received by Consumer 1");
Task.Delay(n % 2 == 0 ? 300 : 100).Wait(); // Join block will still pair them correctly
return(n * -1);
}, new ExecutionDataflowBlockOptions
{
MaxDegreeOfParallelism = 2
});
var a2 = new TransformBlock <int, int>(n => {
Console.WriteLine($"Message {n} received by Consumer 2");
Task.Delay(n % 2 == 0 ? 100 : 300).Wait(); // Join block will still pair them correctly
return(n);
}, new ExecutionDataflowBlockOptions
{
MaxDegreeOfParallelism = 2
});
broadcastBlock.LinkWithPropagationTo(a1);
broadcastBlock.LinkWithPropagationTo(a2);
var joinBlock = new JoinBlock <int, int>();
a1.LinkWithPropagationTo(joinBlock.Target1);
a2.LinkWithPropagationTo(joinBlock.Target2);
var finalBlock = new ActionBlock <Tuple <int, int> >(a => Console.WriteLine($"Message {a.Item1},{a.Item2} was processed"));
joinBlock.LinkWithPropagationTo(finalBlock);
for (int i = 0; i < 10; i++)
{
broadcastBlock.SendAsync(i); // Like Post, if receivers are not ready then they will be ignored, there is no retry
}
broadcastBlock.Complete();
finalBlock.Completion.Wait();
Console.WriteLine("Finished!");
}