public QueryEndpoint(EventStorageReader reader, ResConfiguration config)
{
var ctx = NetMQContext.Create();
_ctx = ctx;
var outBuffer = new OutBuffer(config.QueryEndpoint.BufferSize);
var dispatcher = new TcpMessageDispatcher();
dispatcher.Register(ResCommands.QueryEventsByStream, new LoadEventsByStreamHandler(reader, outBuffer));
MessageProcessor messageProcessor = new TcpIncomingMessageProcessor(dispatcher);
messageProcessor = new ErrorHandlingMessageProcessor(messageProcessor);
//important...the factory method parameter must "create" the gateway, threading issue otherwise.
Logger.Debug("[QueryEndpoint] Initialising Transceiver. Endpoint: {0}", config.QueryEndpoint.Endpoint);
_transceiver = new Transceiver(() => new TcpGateway(ctx, config.QueryEndpoint.Endpoint, messageProcessor), outBuffer);
}
public void should_be_able_to_load_events_for_a_context_and_a_stream()
{
var storage = new InMemoryEventStorage();
var now = new DateTime(2013, 1, 1);
var createEventsDetails = new Dictionary<Guid, CreateEventsMetaData>();
var j = 0;
for (var i = 1; i <= 6; i++)
{
createEventsDetails.Add(Guid.NewGuid(), new CreateEventsMetaData(2, "foo", "stream" + i, new[] { now.AddMilliseconds(++j), now.AddMilliseconds(++j) }));
}
var commitDetails = new EventsInjector(storage).InsertEvents(createEventsDetails);
var reader = new EventStorageReader(10, TimeSpan.FromMinutes(5), storage);
for (var i = 1; i <= 6; i++)
{
var events = reader.LoadEventsForStream("foo", "stream" + i);
Assert.That(events.Length, Is.EqualTo(2));
}
}
public void Start(ResConfiguration config)
{
Logger.Info("[ResHost] Starting...Geronimo....");
_cancellationToken = new CancellationTokenSource();
var eventStorage = getEventStorage(config.ConnectionStringName);
var storageWriter = new EventStorageWriter(config.Writer.BufferSize, config.Writer.TimeoutBeforeDrop,
eventStorage, config.Writer.BatchSize);
storageWriter.Start(_cancellationToken.Token);
var storageReader = new EventStorageReader(config.Reader.BufferSize, config.Reader.TimeoutBeforeDrop,
eventStorage, config.Reader.BatchSize);
_publishEndpoint = new PublishEndpoint(storageWriter, config);
_publishEndpoint.Start(_cancellationToken.Token);
_queryEndpoint = new QueryEndpoint(storageReader, config);
_queryEndpoint.Start(_cancellationToken.Token);
var queueStorage = getQueueStorage(config.ConnectionStringName, eventStorage);
_queueEndpoint = new QueueEndpoint(queueStorage, config);
_queueEndpoint.Start(_cancellationToken.Token);
Logger.Info("[ResHost] Started. All systems go...");
}
public void should_be_able_to_fetch_a_particular_event()
{
var storage = new InMemoryEventStorage();
var now = new DateTime(2013, 1, 1);
var createEventsDetails = new Dictionary<Guid, CreateEventsMetaData>();
var j = 0;
for (var i = 1; i <= 1; i++)
{
createEventsDetails.Add(Guid.NewGuid(), new CreateEventsMetaData(1, "foo", "stream", new[] { now.AddMilliseconds(++j) }));
}
var commitDetails = new EventsInjector(storage).InsertEvents(createEventsDetails);
var reader = new EventStorageReader(10, TimeSpan.FromMinutes(5), storage);
var eventTask = reader.Fetch(new FetchEventRequest(commitDetails[0].Events[0].EventId, "foo", "stream"));
reader.Start(_token.Token);
var @event = eventTask.Result;
var expecetdEvent = commitDetails[0].Events[0];
Assert.That(@event, !Is.Null, "No event is fetched");
Assert.That(@event.EventId, Is.EqualTo(expecetdEvent.EventId), "This is not the exepected event from the fetch opeartion");
Assert.That(@event.Sequence, Is.EqualTo(expecetdEvent.Sequence), "This is not the exepected sequence of the event from the fetch opeartion");
Assert.That(@event.Timestamp, Is.EqualTo(expecetdEvent.Timestamp), "This is not the exepected sequence of the event from the fetch opeartion");
Assert.That(@event.TypeKey, Is.EqualTo(expecetdEvent.TypeKey), "This is not the exepected type of the event from the fetch opeartion");
}
public void should_cascade_event_not_found_exception_for_invalid_event()
{
var storage = new InMemoryEventStorage();
var now = new DateTime(2013, 1, 1);
var createEventsDetails = new Dictionary<Guid, CreateEventsMetaData>();
var j = 0;
for (var i = 1; i <= 6; i++)
{
createEventsDetails.Add(Guid.NewGuid(), new CreateEventsMetaData(2, "foo", "stream" + i, new[] { now.AddMilliseconds(++j), now.AddMilliseconds(++j) }));
}
var commitDetails = new EventsInjector(storage).InsertEvents(createEventsDetails);
var reader = new EventStorageReader(10, TimeSpan.FromMilliseconds(10), storage);
var @event = reader.Fetch(new FetchEventRequest(commitDetails[0].Events[0].EventId, "foo", "stream"));
reader.Start(_token.Token);
try
{
var result = @event.Result;
}
catch (AggregateException ae)
{
throw ae.InnerException;
}
}
public void there_should_be_exactly_one_read_per_batch()
{
var storage = new InMemoryEventStorage();
var now = new DateTime(2013, 1, 1);
var createEventsDetails = new Dictionary<Guid, CreateEventsMetaData>();
var j = 0;
for (var i = 1; i <= 6; i++)
{
createEventsDetails.Add(Guid.NewGuid(), new CreateEventsMetaData(2, "foo", "stream" + i, new[] { now.AddMilliseconds(++j), now.AddMilliseconds(++j) }));
}
var commitDetails = new EventsInjector(storage).InsertEvents(createEventsDetails);
var reader = new EventStorageReader(100, TimeSpan.FromSeconds(10), storage, 2);
var listOfTasksOfEvents = new List<Task>();
for (int i = 0; i < 6; i++)
{
for (int k = 0; k < 2; k++)
{
var eventTask = reader.Fetch(new FetchEventRequest(commitDetails[i].Events[k].EventId, "foo", "stream" + (i + 1)));
listOfTasksOfEvents.Add(eventTask);
}
}
reader.Start(_token.Token);
try
{
Task.WaitAll(listOfTasksOfEvents.ToArray());
Assert.That(storage.ReadCount, Is.EqualTo(6));
}
catch (AggregateException ae)
{
throw ae.InnerException;
}
}
public void should_throw__reader_busy_exception_when_the_reader_max_count_is_reached()
{
var storage = new InMemoryEventStorage();
var now = new DateTime(2013, 1, 1);
var createEventsDetails = new Dictionary<Guid, CreateEventsMetaData>();
var j = 0;
for (var i = 1; i <= 6; i++)
{
createEventsDetails.Add(Guid.NewGuid(), new CreateEventsMetaData(2, "foo", "stream", new[] { now.AddMilliseconds(++j), now.AddMilliseconds(++j) }));
}
var commitDetails = new EventsInjector(storage).InsertEvents(createEventsDetails);
var reader = new EventStorageReader(10, TimeSpan.FromMinutes(5), storage);
var listOfTasksOfEvents = new List<Task>();
for (int i = 1; i < 12; i++)
{
var eventTask = reader.Fetch(new FetchEventRequest(commitDetails[0].Events[0].EventId, "foo", "stream"));
listOfTasksOfEvents.Add(eventTask);
}
}
public void Should_load_nothing_when_there_is_no_event()
{
var storage = new InMemoryEventStorage();
var reader = new EventStorageReader(2000, TimeSpan.FromMinutes(5), storage);
var events = reader.LoadEventsForStream("foo", "stream");
Assert.That(events.Length, Is.EqualTo(0), "events list should be empty as there is no events to laod!");
}
public LoadEventsByStreamHandler(EventStorageReader storage, OutBuffer buffer)
{
_storage = storage;
_buffer = buffer;
_spin = new SpinWait();
}