/// <summary>
/// This method is started by the first message of a batch and waits for a specified amount of time before forwarding the entire batch.
/// </summary>
/// <param name="message">The first message</param>
/// <returns></returns>
private async Task StartCollect(TypedModelUpdate message)
{
lock (_batchLock)
{
_batch.AddOrUpdate(message.Property, message, (key, old) => (old.TimestampUtc > message.TimestampUtc) ? (old) : (message));
}
await Task.Delay(_delayMilliseconds);
lock (_onMessageModeLock)
{
lock (_batchLock)
{
SendAndClearBag();
}
_isCollectionMode = false;
}
}
/// <summary>
/// Receives a ModelUpdate for delivery after the current waiting delay has completed.
/// ModelUpdates will NOT be sent out if they are superseded by new updates for the same property with greater TimestampUtc
/// </summary>
/// <param name="mu"></param>
public void OnMessage(TypedModelUpdate message)
{
lock (_onMessageModeLock)
{
if (_isCollectionMode)
{
lock (_batchLock)
{
_batch.AddOrUpdate(message.Property, message, (key, old) => (old.TimestampUtc > message.TimestampUtc) ? (old) : (message));
}
}
else
{
_isCollectionMode = true;
_collectionWaitTask = StartCollect(message);
}
}
}