public async Task <AppendResult> AppendEventAsync <TAggregateId>(IDomainEvent <TAggregateId> @event) where TAggregateId : IAggregateId
{
var paritionKey = @event.AggregateId.IdAsString();
var partition = new Partition(_table, paritionKey);
var openResult = await Stream.TryOpenAsync(partition).ConfigureAwait(false);
var stream = openResult.Found ? openResult.Stream : new Stream(partition);
if (stream.Version != @event.AggregateVersion)
{
throw new EventStoreConcurrencyException();
}
try
{
var evtId = EventId.From(@event.EventId.ToString());
var evtProperties = new
{
Id = @event.EventId.ToString(),
Type = @event.GetType().AssemblyQualifiedName,
Data = JsonConvert.SerializeObject(@event)
};
var writeResult = await Stream.WriteAsync(stream, new EventData(EventId.From(evtId), EventProperties.From(evtProperties)))
.ConfigureAwait(false);
return(new AppendResult(writeResult.Events.ToList().Last().Version));
}
catch (ConcurrencyConflictException)
{
throw new EventStoreConcurrencyException();
}
}
public FakeEvent()
{
Id = EventId.From(Guid.Empty.ToString());
Subject = Guid.Empty.ToString();
Timestamp = DateTimeOffset.MaxValue;
Version = 2;
}
public void Supports_value_equality_via_Id(string id1, string id2, bool expectedToBeEqual)
{
var ev1 = Event <string> .New("123", EventId.From(id1));
var ev2 = Event <string> .New("321", EventId.From(id2));
(ev1 == ev2).Should().Be(expectedToBeEqual);
}
static EventData CreateEvent(string id)
{
var properties = new Dictionary <string, EntityProperty>
{
{ "Type", new EntityProperty("StreamChanged") },
{ "Data", new EntityProperty("{}") }
};
return(new EventData(EventId.From(id), EventProperties.From(properties)));
}
static EventData Event(int id)
{
var properties = new
{
Id = id,
Type = "<type>",
Data = "{some}"
};
return(new EventData(EventId.From(id.ToString()), EventProperties.From(properties)));
}
internal Event ToEvent(IEventContentTypeResolver eventContentTypeResolver, IEventContentSerializer contentSerializer)
{
var ct = new EventContentType(TypeAssemblyName, TypeNamespace, TypeName);
var t = eventContentTypeResolver.Resolve(ct);
return(Event.From(
EventId.From(Id),
Rill.Sequence.From(Sequence),
Rill.Timestamp.From(Timestamp.UtcDateTime),
contentSerializer.Deserialize(Content, t)));
}
public void WhenDataIsNotNullThenShouldSerializeWithExpectedValueNonGeneric()
{
var serializer = new JsonEventDeserializer();
var result = (FakeEvent)serializer.Deserialize(_json, typeof(FakeEvent));
result.Should().NotBeNull();
result.Id.Should().Be(EventId.From(Guid.Parse("5eb0ea02-7dde-4730-bd61-09fcf1065e11").ToString()));
result.Subject.Should().Be(Guid.Parse("fdfbd5b3-cafb-4376-a3fa-7f74c20a0188").ToString());
result.Timestamp.Should().Be(DateTimeOffset.MaxValue);
result.Version.Should().Be(3);
}
public EventData BuildEventData <T>(IEvent eventData) where T : IAggregateRoot
{
var id = _guidProvider.GenerateGuid();
var properties = new EventStorageData(
typeof(T).Name,
id,
eventData.GetType().AssemblyQualifiedName,
JsonConvert.SerializeObject(eventData));
return(new EventData(EventId.From(id), EventProperties.From(properties)));
}
public override EventId?ReadJson(JsonReader reader, Type objectType, EventId?existingValue, bool hasExistingValue,
JsonSerializer serializer)
{
var value = serializer.Deserialize <string>(reader);
if (value == null)
{
return(null);
}
return(EventId.From(value));
}
static EventData ToEventData(Event e)
{
var id = Guid.NewGuid();
var properties = new
{
Id = id,
Type = e.GetType().FullName,
Data = JsonConvert.SerializeObject(e)
};
return(new EventData(EventId.From(id), EventProperties.From(properties)));
}
static EventData ToEventData(object @event)
{
var id = Guid.NewGuid().ToString("D");
var properties = new EventEntity
{
Id = id,
Type = @event.GetType().FullName,
Data = JsonConvert.SerializeObject(@event, SerializerSettings)
};
return(new EventData(EventId.From(id), EventProperties.From(properties)));
}
static EventData CreateEvent(string id = null)
{
var properties = new Dictionary <string, EntityProperty>
{
{ "Type", new EntityProperty("StreamChanged") },
{ "Data", new EntityProperty("{}") }
};
var eventId = id != null
? EventId.From(id)
: EventId.None;
return(new EventData(eventId, EventProperties.From(properties)));
}
static EventData Event(object e)
{
var id = Guid.NewGuid();
var properties = new
{
Id = id, // id that you specify for Event ctor is used only for duplicate event detection
Type = e.GetType().Name, // you can include any number of custom properties along with event
Data = JSON(e), // you're free to choose any name you like for data property
Bin = BSON(e) // and any storage format: binary, string, whatever (any EdmType)
};
return(new EventData(EventId.From(id), EventProperties.From(properties)));
}
static EventData Event(object @event, params Include[] includes)
{
var id = Guid.NewGuid();
var properties = new
{
Type = @event.GetType().Name,
Data = JsonConvert.SerializeObject(@event)
};
return(new EventData(
EventId.From(id),
EventProperties.From(properties),
EventIncludes.From(includes)));
}
public void When_writing_duplicate_event()
{
var partition = new Partition(table, "test-cosmos-dupes");
var stream = new Stream(partition);
partition.InsertEventIdEntities("e1", "e2");
partition.CaptureContents(contents =>
{
var duplicate = new EventData(EventId.From("e2"));
Assert.ThrowsAsync <DuplicateEventException>(
async() => await Stream.WriteAsync(stream, new EventData(EventId.From("e3")), duplicate));
contents.AssertNothingChanged();
});
}
void SimultaneousWriting()
{
var a = Stream.Open(Partition);
var b = Stream.Open(Partition);
Stream.Write(a, new EventData(EventId.From("123")));
try
{
Stream.Write(b, new EventData(EventId.From("456")));
}
catch (ConcurrencyConflictException)
{
Console.WriteLine("Simultaneously writing to the same version of stream will lead to ConcurrencyConflictException");
}
}
public void When_single_event_along_with_includes_is_over_WATS_max_batch_size_limit()
{
var stream = new Stream(partition);
var includes = Enumerable
.Range(1, Api.AzureMaxBatchSize)
.Select(i => Include.Insert(new TestEntity(i.ToString())))
.ToArray();
var @event = new EventData(
EventId.From("offsize"),
EventIncludes.From(includes)
);
Assert.ThrowsAsync <InvalidOperationException>(
async() => await Stream.WriteAsync(stream, @event));
}
async Task SequentiallyWritingToStreamIgnoringReturnedStreamHeader()
{
var stream = await Stream.OpenAsync(Partition);
var result = await Stream.WriteAsync(stream, new EventData(EventId.From("AAA")));
// a new stream header is returned after each write, it contains new Etag
// and it should be used for subsequent operations
// stream = result.Stream;
try
{
await Stream.WriteAsync(stream, new EventData(EventId.From("BBB")));
}
catch (ConcurrencyConflictException)
{
Console.WriteLine("Ignoring new stream (header) returned after each Write() operation will lead to ConcurrencyConflictException on subsequent write operation");
}
}
public override void Run()
{
var result = Stream.Write(new Stream(Partition), new EventData(EventId.From("42")));
try
{
var events = new[]
{
new EventData(EventId.From("56")),
new EventData(EventId.From("42")) // conflicting (duplicate) event
};
Stream.Write(result.Stream, events);
}
catch (DuplicateEventException e)
{
Console.WriteLine("Duplicate event detection is based on ID of the event.");
Console.WriteLine("An ID of conflicting event will be reported back as a property of DuplicateEventException.");
Console.WriteLine("Here the conflicting event is: {0}", e.Id);
Console.WriteLine("The caller can use this information to remove conflicting event from the batch and retry (or cancel)");
}
}
public void Can_be_reconstructed()
{
var org = Guid.NewGuid();
(EventId.From(org) == org).Should().BeTrue();
}
public void Can_be_reconstructed_from_guid_string()
{
var org = Guid.NewGuid();
(EventId.From(org.ToString()) == org).Should().BeTrue();
}
public void Can_not_be_created_from_an_empty_guid()
{
Action a = () => EventId.From(Guid.Empty);
a.Should().Throw <ArgumentException>();
}
