public void disconnected_client_has_assigned_streams_sent_to_another_client()
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
const string subsctiptionStream = "$ce-streamName";
var sub = new Core.Services.PersistentSubscription.PersistentSubscription(
PersistentSubscriptionToStreamParamsBuilder.CreateFor(subsctiptionStream, "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedPersistentSubscriptionConsumerStrategy(new XXHashUnsafe()))
.StartFromCurrent());
reader.Load(null);
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-1", client1Envelope, 10, "foo", "bar");
var client2Id = Guid.NewGuid();
sub.AddClient(Guid.NewGuid(), client2Id, "connection-2", client2Envelope, 10, "foo", "bar");
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(Guid.NewGuid(), subsctiptionStream, 0,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-1", 0), false));
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(Guid.NewGuid(), subsctiptionStream, 1,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-2", 0), false));
Assert.AreEqual(1, client1Envelope.Replies.Count);
Assert.AreEqual(1, client2Envelope.Replies.Count);
sub.RemoveClientByConnectionId(client2Id);
// Message 2 should be retried on client 1 as it wasn't acked.
Assert.AreEqual(2, client1Envelope.Replies.Count);
Assert.AreEqual(1, client2Envelope.Replies.Count);
}
public void events_are_skipped_if_assigned_client_full()
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
const string subsctiptionStream = "$ce-streamName";
var sub = new Core.Services.PersistentSubscription.PersistentSubscription(
PersistentSubscriptionToStreamParamsBuilder.CreateFor(subsctiptionStream, "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedPersistentSubscriptionConsumerStrategy(new XXHashUnsafe()))
.StartFromCurrent());
reader.Load(null);
var correlationId = Guid.NewGuid();
sub.AddClient(correlationId, Guid.NewGuid(), "connection-1", client1Envelope, 1, "foo", "bar");
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-2", client2Envelope, 1, "foo", "bar");
var message1 = Guid.NewGuid();
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(message1, subsctiptionStream, 0,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-1", 0), false));
Assert.That(client1Envelope.Replies.Count, Is.EqualTo(1));
Assert.That(client2Envelope.Replies.Count, Is.EqualTo(0));
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(Guid.NewGuid(), subsctiptionStream, 1,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-1", 0), false));
Assert.That(client1Envelope.Replies.Count, Is.EqualTo(1));
Assert.That(client2Envelope.Replies.Count, Is.EqualTo(0));
Assert.True(sub.TryGetStreamBuffer(out var streamBuffer));
Assert.That(streamBuffer.BufferCount, Is.EqualTo(1));
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(Guid.NewGuid(), subsctiptionStream, 2,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-2", 0), false));
Assert.That(client1Envelope.Replies.Count, Is.EqualTo(1));
Assert.That(client2Envelope.Replies.Count, Is.EqualTo(1));
Assert.That(streamBuffer.BufferCount, Is.EqualTo(1));
sub.AcknowledgeMessagesProcessed(correlationId, new[] { message1 });
Assert.That(client1Envelope.Replies.Count, Is.EqualTo(2));
Assert.That(client2Envelope.Replies.Count, Is.EqualTo(1));
Assert.That(streamBuffer.BufferCount, Is.EqualTo(0));
}
public void available_capacity_is_tracked_with_acked_messages()
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
const string subsctiptionStream = "$ce-streamName";
PersistentSubscriptionParams settings = PersistentSubscriptionToStreamParamsBuilder
.CreateFor(subsctiptionStream, "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedPersistentSubscriptionConsumerStrategy(new XXHashUnsafe()))
.StartFromCurrent();
var consumerStrategy = (PinnedPersistentSubscriptionConsumerStrategy)settings.ConsumerStrategy;
var sub = new Core.Services.PersistentSubscription.PersistentSubscription(settings);
reader.Load(null);
var correlationId1 = Guid.NewGuid();
sub.AddClient(correlationId1, Guid.NewGuid(), "connection-1", client1Envelope, 14, "foo", "bar");
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(14));
var correlationId2 = Guid.NewGuid();
sub.AddClient(correlationId2, Guid.NewGuid(), "connection-2", client2Envelope, 10, "foo", "bar");
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(24));
var message1 = Guid.NewGuid();
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(message1, subsctiptionStream, 0,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-1", 0), false));
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(23));
var message2 = Guid.NewGuid();
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(message2, subsctiptionStream, 1,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-2", 0), false));
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(22));
sub.AcknowledgeMessagesProcessed(correlationId1, new[] { message1 });
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(23));
sub.AcknowledgeMessagesProcessed(correlationId2, new[] { message2 });
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(24));
}
public void live_subscription_with_pinned_by_correlation_pushes_events_with_metadata_with_valid_correlation_to_same_client_for_correlation_id()
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
var sub = new PersistentSubscription(
PersistentSubscriptionToStreamParamsBuilder.CreateFor("$ce-streamName", "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedByCorrelationPersistentSubscriptionConsumerStrategy(new XXHashUnsafe()))
.StartFromCurrent());
reader.Load(null);
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-1", client1Envelope, 10, "foo", "bar");
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-2", client2Envelope, 10, "foo", "bar");
CorrelationIdPropertyContext.CorrelationIdProperty = "$correlationId2";
var metaData1 = Encoding.UTF8.GetBytes(@"{ ""x"": ""x"", ""$correlationId2"": ""1234567890"", ""y"": ""y"" }");
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-1", 0, metaData1));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-1", 1, metaData1));
Assert.AreEqual(2, client1Envelope.Replies.Count);
Assert.AreEqual(0, client2Envelope.Replies.Count);
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-2", 2, metaData1));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-2", 3, metaData1));
Assert.AreEqual(4, client1Envelope.Replies.Count);
Assert.AreEqual(0, client2Envelope.Replies.Count);
var metaData2 = Encoding.UTF8.GetBytes(@"{ ""$correlationId2"": ""1234567891"", ""y"": ""y"" }");
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-1", 4, metaData2));
Assert.AreEqual(4, client1Envelope.Replies.Count);
Assert.AreEqual(1, client2Envelope.Replies.Count);
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-3", 5, metaData2));
Assert.AreEqual(4, client1Envelope.Replies.Count);
Assert.AreEqual(2, client2Envelope.Replies.Count);
}
live_subscription_with_pinned_by_correlation_pushes_events_to_same_client_for_stream_id_for_metadata(byte[] metaData)
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
var sub = new PersistentSubscription(
PersistentSubscriptionToStreamParamsBuilder.CreateFor("$ce-streamName", "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedByCorrelationPersistentSubscriptionConsumerStrategy(new XXHashUnsafe()))
.StartFromCurrent());
reader.Load(null);
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-1", client1Envelope, 10, "foo", "bar");
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-2", client2Envelope, 10, "foo", "bar");
sub.NotifyLiveSubscriptionMessage(
Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-1", 0, metaData));
sub.NotifyLiveSubscriptionMessage(
Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-1", 1, metaData));
Assert.AreEqual(2, client1Envelope.Replies.Count);
Assert.AreEqual(0, client2Envelope.Replies.Count);
sub.NotifyLiveSubscriptionMessage(
Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-2", 2, metaData));
sub.NotifyLiveSubscriptionMessage(
Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-2", 3, metaData));
Assert.AreEqual(2, client1Envelope.Replies.Count);
Assert.AreEqual(2, client2Envelope.Replies.Count);
sub.NotifyLiveSubscriptionMessage(
Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-1", 4, metaData));
Assert.AreEqual(3, client1Envelope.Replies.Count);
Assert.AreEqual(2, client2Envelope.Replies.Count);
sub.NotifyLiveSubscriptionMessage(
Helper.BuildFakeEventWithMetadata(Guid.NewGuid(), "type", "streamName-3", 5, metaData));
Assert.AreEqual(4, client1Envelope.Replies.Count);
Assert.AreEqual(2, client2Envelope.Replies.Count);
}
public void resolved_link_events_use_event_stream_id()
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
const string subsctiptionStream = "$ce-streamName";
var sub = new Core.Services.PersistentSubscription.PersistentSubscription(
PersistentSubscriptionToStreamParamsBuilder.CreateFor(subsctiptionStream, "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedPersistentSubscriptionConsumerStrategy(new XXHashUnsafe()))
.StartFromCurrent());
reader.Load(null);
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-1", client1Envelope, 10, "foo", "bar");
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-2", client2Envelope, 10, "foo", "bar");
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(Guid.NewGuid(), subsctiptionStream, 0,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-1", 0)));
Assert.AreEqual(1, client1Envelope.Replies.Count);
Assert.AreEqual(0, client2Envelope.Replies.Count);
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(Guid.NewGuid(), subsctiptionStream, 1,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-2", 0)));
Assert.AreEqual(1, client1Envelope.Replies.Count);
Assert.AreEqual(1, client2Envelope.Replies.Count);
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(Guid.NewGuid(), subsctiptionStream, 2,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-3", 0)));
Assert.AreEqual(2, client1Envelope.Replies.Count);
Assert.AreEqual(1, client2Envelope.Replies.Count);
sub.NotifyLiveSubscriptionMessage(Helper.BuildLinkEvent(Guid.NewGuid(), subsctiptionStream, 3,
Helper.BuildFakeEvent(Guid.NewGuid(), "type", "streamName-4", 0)));
Assert.AreEqual(2, client1Envelope.Replies.Count);
Assert.AreEqual(2, client2Envelope.Replies.Count);
}
public void new_subscription_gets_work()
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var client3Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
const string subsctiptionStream = "$ce-streamName";
var sub = new Core.Services.PersistentSubscription.PersistentSubscription(
PersistentSubscriptionToStreamParamsBuilder.CreateFor(subsctiptionStream, "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedPersistentSubscriptionConsumerStrategy(new ByLengthHasher()))
.StartFromCurrent());
reader.Load(null);
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-1", client1Envelope, 10, "foo", "bar");
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-2", client2Envelope, 10, "foo", "bar");
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "1", 0));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "11", 1));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "111", 2));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "1111", 3));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "11111", 4));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "111111", 5));
Assert.AreEqual(3, client1Envelope.Replies.Count);
Assert.AreEqual(3, client2Envelope.Replies.Count);
sub.AddClient(Guid.NewGuid(), Guid.NewGuid(), "connection-3", client3Envelope, 10, "foo", "bar");
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "1", 6));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "11", 7));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "111", 8));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "1111", 9));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "11111", 10));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "111111", 11));
Assert.AreEqual(5, client1Envelope.Replies.Count);
Assert.AreEqual(5, client2Envelope.Replies.Count);
Assert.AreEqual(2, client3Envelope.Replies.Count);
}
public void available_capacity_is_tracked()
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
const string subsctiptionStream = "$ce-streamName";
PersistentSubscriptionParams settings = PersistentSubscriptionToStreamParamsBuilder
.CreateFor(subsctiptionStream, "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedPersistentSubscriptionConsumerStrategy(new XXHashUnsafe()))
.StartFromCurrent();
var consumerStrategy = (PinnedPersistentSubscriptionConsumerStrategy)settings.ConsumerStrategy;
var sub = new Core.Services.PersistentSubscription.PersistentSubscription(settings);
reader.Load(null);
var client1Id = Guid.NewGuid();
sub.AddClient(Guid.NewGuid(), client1Id, "connection-1", client1Envelope, 14, "foo", "bar");
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(14));
var client2Id = Guid.NewGuid();
sub.AddClient(Guid.NewGuid(), client2Id, "connection-2", client2Envelope, 10, "foo", "bar");
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(24));
sub.RemoveClientByConnectionId(client2Id);
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(14));
sub.RemoveClientByConnectionId(client1Id);
Assert.That(consumerStrategy.AvailableCapacity, Is.EqualTo(0));
}
public void bad_availablecapacity_scneanrio_causing_null_reference()
{
var client1Envelope = new FakeEnvelope();
var client2Envelope = new FakeEnvelope();
var reader = new FakeCheckpointReader();
const string subsctiptionStream = "$ce-streamName";
var sub = new Core.Services.PersistentSubscription.PersistentSubscription(
PersistentSubscriptionToStreamParamsBuilder.CreateFor(subsctiptionStream, "groupName")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(reader)
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.CustomConsumerStrategy(new PinnedPersistentSubscriptionConsumerStrategy(new ByLengthHasher()))
.StartFromCurrent());
reader.Load(null);
var conn1Id = Guid.NewGuid();
sub.AddClient(Guid.NewGuid(), conn1Id, "connection-1", client1Envelope, 10, "foo", "bar");
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "1", 0));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "11", 1));
sub.NotifyLiveSubscriptionMessage(Helper.BuildFakeEvent(Guid.NewGuid(), "type", "111", 2));
Assert.AreEqual(3, client1Envelope.Replies.Count);
var conn2Id = Guid.NewGuid();
sub.AddClient(Guid.NewGuid(), conn2Id, "connection-2", client2Envelope, 10, "foo", "bar");
Assert.AreEqual(3, client1Envelope.Replies.Count);
Assert.AreEqual(0, client2Envelope.Replies.Count);
sub.RemoveClientByConnectionId(conn1Id);
// Used to throw a null reference exception.
Assert.That(() => sub.RemoveClientByConnectionId(conn2Id), Throws.Nothing);
}
public void read_batch_size_greater_or_equal_to_buffer_size_throws(int readBatchSize, int bufferSize)
{
Assert.Throws <ArgumentOutOfRangeException>(() =>
new Core.Services.PersistentSubscription.PersistentSubscription(PersistentSubscriptionToStreamParamsBuilder
.CreateFor("stream", "group")
.WithEventLoader(new FakeStreamReader())
.WithCheckpointReader(new FakeCheckpointReader())
.WithCheckpointWriter(new FakeCheckpointWriter(x => { }))
.WithMessageParker(new FakeMessageParker())
.StartFromCurrent()
.WithReadBatchOf(readBatchSize)
.WithHistoryBufferSizeOf(bufferSize)));
}