private void TryPushingMessagesToClients()
{
lock (_lock)
{
if (_state == PersistentSubscriptionState.NotReady)
{
return;
}
foreach (StreamBuffer.OutstandingMessagePointer messagePointer in _streamBuffer.Scan())
{
OutstandingMessage message = messagePointer.Message;
ConsumerPushResult result = _pushClients.PushMessageToClient(message.ResolvedEvent, message.RetryCount);
if (result == ConsumerPushResult.Sent)
{
messagePointer.MarkSent();
MarkBeginProcessing(message);
_lastKnownMessage = Math.Max(_lastKnownMessage, message.ResolvedEvent.OriginalEventNumber);
}
else if (result == ConsumerPushResult.Skipped)
{
// The consumer strategy skipped the message so leave it in the buffer and continue.
}
else if (result == ConsumerPushResult.NoMoreCapacity)
{
return;
}
}
}
}
public void adding_multiple_same_read_message()
{
var buffer = new StreamBuffer(10, 10, -1, true);
var id1 = Guid.NewGuid();
buffer.AddReadMessage(BuildMessageAt(id1, 0));
buffer.AddReadMessage(BuildMessageAt(id1, 0));
Assert.AreEqual(2, buffer.BufferCount);
var messagePointer = buffer.Scan().First();
Assert.AreEqual(id1, messagePointer.Message.EventId);
messagePointer.MarkSent();
Assert.AreEqual(1, buffer.BufferCount);
messagePointer = buffer.Scan().First();
Assert.AreEqual(id1, messagePointer.Message.EventId);
messagePointer.MarkSent();
Assert.AreEqual(0, buffer.BufferCount);
Assert.IsFalse(buffer.Live);
}
public void adding_read_message_in_correct_order()
{
var buffer = new StreamBuffer(10, 10, -1, true);
var id = Guid.NewGuid();
buffer.AddReadMessage(BuildMessageAt(id, 0));
Assert.AreEqual(1, buffer.BufferCount);
OutstandingMessage message = buffer.Scan().First().Message;
Assert.AreEqual(id, message.EventId);
Assert.IsFalse(buffer.Live);
}
public IEnumerable <(ResolvedEvent ResolvedEvent, int RetryCount)> GetNextNOrLessMessages(int count)
{
lock (_lock) {
foreach (var messagePointer in StreamBuffer.Scan().Take(count))
{
messagePointer.MarkSent();
MarkBeginProcessing(messagePointer.Message);
if (!messagePointer.Message.IsReplayedEvent)
{
_lastKnownMessage = Math.Max(_lastKnownMessage, messagePointer.Message.ResolvedEvent.OriginalEventNumber);
}
yield return(messagePointer.Message.ResolvedEvent, messagePointer.Message.RetryCount);
}
}
}
public void adding_messages_to_read_after_same_on_live_switches_to_live()
{
var buffer = new StreamBuffer(10, 10, -1, true);
var id1 = Guid.NewGuid();
buffer.AddLiveMessage(BuildMessageAt(id1, 0));
buffer.AddReadMessage(BuildMessageAt(id1, 0));
Assert.IsTrue(buffer.Live);
Assert.AreEqual(1, buffer.BufferCount);
var messagePointer = buffer.Scan().First();
Assert.AreEqual(id1, messagePointer.Message.EventId);
messagePointer.MarkSent();
Assert.AreEqual(0, buffer.BufferCount);
}
public void retried_messages_appear_in_version_order()
{
var buffer = new StreamBuffer(10, 10, -1, true);
var id1 = Guid.NewGuid();
buffer.AddReadMessage(BuildMessageAt(id1, 0));
var id2 = Guid.NewGuid();
var id3 = Guid.NewGuid();
var id4 = Guid.NewGuid();
var id5 = Guid.NewGuid();
buffer.AddRetry(BuildMessageAt(id2, 2));
buffer.AddRetry(BuildMessageAt(id3, 3));
buffer.AddRetry(BuildMessageAt(id4, 1));
buffer.AddRetry(BuildMessageAt(id5, 2));
var messagePointer = buffer.Scan().First();
Assert.AreEqual(id4, messagePointer.Message.EventId);
messagePointer.MarkSent();
messagePointer = buffer.Scan().First();
Assert.AreEqual(id2, messagePointer.Message.EventId);
messagePointer.MarkSent();
messagePointer = buffer.Scan().First();
Assert.AreEqual(id5, messagePointer.Message.EventId);
messagePointer.MarkSent();
messagePointer = buffer.Scan().First();
Assert.AreEqual(id3, messagePointer.Message.EventId);
messagePointer.MarkSent();
}
public void retried_messages_appear_first()
{
var buffer = new StreamBuffer(10, 10, -1, true);
var id1 = Guid.NewGuid();
buffer.AddReadMessage(BuildMessageAt(id1, 0));
var id2 = Guid.NewGuid();
buffer.AddRetry(BuildMessageAt(id2, 2));
Assert.AreEqual(2, buffer.BufferCount);
Assert.AreEqual(1, buffer.RetryBufferCount);
Assert.AreEqual(1, buffer.ReadBufferCount);
var messagePointer = buffer.Scan().First();
Assert.AreEqual(id2, messagePointer.Message.EventId);
messagePointer.MarkSent();
Assert.AreEqual(1, buffer.BufferCount);
Assert.AreEqual(0, buffer.RetryBufferCount);
Assert.AreEqual(1, buffer.ReadBufferCount);
messagePointer = buffer.Scan().First();
Assert.AreEqual(id1, messagePointer.Message.EventId);
messagePointer.MarkSent();
Assert.AreEqual(0, buffer.BufferCount);
Assert.AreEqual(0, buffer.RetryBufferCount);
Assert.AreEqual(0, buffer.ReadBufferCount);
Assert.IsFalse(buffer.Live);
}
public void skipped_messages_are_not_removed()
{
var buffer = new StreamBuffer(10, 10, -1, true);
var id1 = Guid.NewGuid();
buffer.AddReadMessage(BuildMessageAt(id1, 0));
var id2 = Guid.NewGuid();
buffer.AddReadMessage(BuildMessageAt(id2, 1));
var id3 = Guid.NewGuid();
buffer.AddReadMessage(BuildMessageAt(id3, 2));
Assert.AreEqual(3, buffer.BufferCount);
var messagePointer2 = buffer.Scan().Skip(1).First(); // Skip the first message.
Assert.AreEqual(id2, messagePointer2.Message.EventId);
messagePointer2.MarkSent();
Assert.AreEqual(2, buffer.BufferCount);
var messagePointers = buffer.Scan().ToArray();
Assert.AreEqual(id1, messagePointers[0].Message.EventId);
Assert.AreEqual(id3, messagePointers[1].Message.EventId);
}
public void adding_messages_with_lower_in_live()
{
var buffer = new StreamBuffer(10, 10, -1, true);
var id1 = Guid.NewGuid();
var id2 = Guid.NewGuid();
buffer.AddLiveMessage(BuildMessageAt(id1, 5));
buffer.AddLiveMessage(BuildMessageAt(id1, 6));
buffer.AddLiveMessage(BuildMessageAt(id2, 7));
buffer.AddReadMessage(BuildMessageAt(id1, 7));
Assert.IsTrue(buffer.Live);
Assert.AreEqual(1, buffer.BufferCount);
var messagePointer = buffer.Scan().First();
Assert.AreEqual(id2, messagePointer.Message.EventId);
messagePointer.MarkSent();
Assert.AreEqual(0, buffer.BufferCount);
}
public void adding_messages_to_live_without_start_from_beginning()
{
var buffer = new StreamBuffer(10, 10, -1, false);
var id1 = Guid.NewGuid();
var id2 = Guid.NewGuid();
buffer.AddLiveMessage(BuildMessageAt(id1, 6));
buffer.AddLiveMessage(BuildMessageAt(id2, 7));
Assert.IsTrue(buffer.Live);
Assert.AreEqual(2, buffer.BufferCount);
var messagePointer = buffer.Scan().First();
Assert.AreEqual(id1, messagePointer.Message.EventId);
messagePointer.MarkSent();
Assert.AreEqual(1, buffer.BufferCount);
messagePointer = buffer.Scan().First();
Assert.AreEqual(id2, messagePointer.Message.EventId);
messagePointer.MarkSent();
Assert.AreEqual(0, buffer.BufferCount);
}
