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 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);
OutstandingMessage message;
Assert.IsTrue(buffer.TryDequeue(out message));
Assert.AreEqual(id1, message.EventId);
}
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);
OutstandingMessage message;
Assert.IsTrue(buffer.TryDequeue(out message));
Assert.AreEqual(id1, message.EventId);
Assert.IsTrue(buffer.TryDequeue(out message));
Assert.AreEqual(id1, message.EventId);
Assert.IsFalse(buffer.Live);
}
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);
}
private void OnCheckpointLoaded(int? checkpoint)
{
lock (_lock)
{
_state = PersistentSubscriptionState.Behind;
if (!checkpoint.HasValue)
{
Log.Debug(string.Format("Subscription {0}: read no checksum.", _settings.SubscriptionId));
Log.Debug("strtfrom = " + _settings.StartFrom);
_lastPulledEvent = _settings.StartFrom >= 0 ? _settings.StartFrom : 0;
_streamBuffer = new StreamBuffer(_settings.BufferSize, _settings.LiveBufferSize, -1,
_settings.StartFrom >= 0);
TryReadingNewBatch();
}
else
{
_lastPulledEvent = checkpoint.Value;
Log.Debug(string.Format("Subscription {0}: read checksum {1}", _settings.SubscriptionId,
checkpoint.Value));
_streamBuffer = new StreamBuffer(_settings.BufferSize, _settings.LiveBufferSize, -1, true);
TryReadingNewBatch();
}
}
}
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 lowest_retry_doesnt_assume_order()
{
var buffer = new StreamBuffer(10, 10, -1, true);
buffer.AddRetry(BuildMessageAt(Guid.NewGuid(), 4));
buffer.AddRetry(BuildMessageAt(Guid.NewGuid(), 2));
buffer.AddRetry(BuildMessageAt(Guid.NewGuid(), 3));
Assert.AreEqual(2, buffer.GetLowestRetry());
}
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);
}
public void RetrySingleMessage(ResolvedEvent @event)
{
StreamBuffer.AddRetry(new OutstandingMessage(@event.OriginalEvent.EventId, null, @event, 0));
}
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);
OutstandingMessage message;
Assert.IsTrue(buffer.TryDequeue(out message));
Assert.AreEqual(id2, message.EventId);
}
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);
OutstandingMessage message;
Assert.IsTrue(buffer.TryDequeue(out message));
Assert.AreEqual(id1, message.EventId);
Assert.IsTrue(buffer.TryDequeue(out message));
Assert.AreEqual(id2, message.EventId);
}