void SaveEvents(int numberOfCommandsToProcess, string aggregateRootId)
{
var eventStore = new MongoDbEventStore(_database, "Events");
var serializer = new JsonDomainEventSerializer();
var typeNameMapper = new DefaultDomainTypeNameMapper();
Enumerable.Range(0, numberOfCommandsToProcess)
.ToList()
.ForEach(number =>
{
var domainEvents = new[]
{
new RootGotNewNumber(number)
{
Meta =
{
{ DomainEvent.MetadataKeys.AggregateRootId, aggregateRootId },
{ DomainEvent.MetadataKeys.SequenceNumber, number.ToString() },
{ DomainEvent.MetadataKeys.TimeUtc, Time.UtcNow().ToString("u") },
{ DomainEvent.MetadataKeys.Type, typeNameMapper.GetName(typeof(RootGotNewNumber)) },
{ DomainEvent.MetadataKeys.Owner, typeNameMapper.GetName(typeof(Root)) },
}
}
};
eventStore.Save(Guid.NewGuid(), domainEvents.Select(e => serializer.Serialize(e)));
});
}
public void RoundtripEventWithFloatFields(float value)
{
var serializer = new JsonDomainEventSerializer("<events>");
// .AddAliasesFor(typeof(NumberDomainEvent), typeof(ComplexValue));
var rootId = Guid.NewGuid();
var utcNow = DateTime.UtcNow;
var e = new DomainEvent <float>()
{
Value = value,
Meta =
{
{ DomainEvent.MetadataKeys.AggregateRootId, rootId.ToString() },
{ DomainEvent.MetadataKeys.TimeUtc, utcNow.ToString("u") }
}
};
var text = serializer.Serialize(e);
Console.WriteLine(text);
var roundtrippedEvent = (DomainEvent <float>)serializer.Deserialize(text);
//Assert.That(roundtrippedEvent.Meta[DomainEvent.MetadataKeys.AggregateRootId], Is.EqualTo(rootId));
//Assert.That(roundtrippedEvent.Meta[DomainEvent.MetadataKeys.TimeLocal], Is.EqualTo(utcNow.ToLocalTime()));
//Assert.That(roundtrippedEvent.Meta[DomainEvent.MetadataKeys.TimeUtc], Is.EqualTo(utcNow));
Assert.AreEqual(value, roundtrippedEvent.Value);
}
public void RoundtripEventWithReadonlyFields()
{
var serializer = new JsonDomainEventSerializer("<events>")
.AddAliasesFor(typeof(ComplexDomainEvent), typeof(ComplexValue));
var rootId = Guid.NewGuid();
var utcNow = DateTime.UtcNow;
var e = new ComplexDomainEvent("hello there", new ComplexValue(23))
{
Meta =
{
{ DomainEvent.MetadataKeys.AggregateRootId, rootId.ToString() },
{ DomainEvent.MetadataKeys.TimeUtc, utcNow.ToString("u") }
}
};
var text = serializer.Serialize(e);
Console.WriteLine(text);
var roundtrippedEvent = (ComplexDomainEvent)serializer.Deserialize(text);
//Assert.That(roundtrippedEvent.Meta[DomainEvent.MetadataKeys.AggregateRootId], Is.EqualTo(rootId));
//Assert.That(roundtrippedEvent.Meta[DomainEvent.MetadataKeys.TimeLocal], Is.EqualTo(utcNow.ToLocalTime()));
//Assert.That(roundtrippedEvent.Meta[DomainEvent.MetadataKeys.TimeUtc], Is.EqualTo(utcNow));
Assert.That(roundtrippedEvent.Text, Is.EqualTo("hello there"));
Assert.That(roundtrippedEvent.Value.Value, Is.EqualTo(23));
}
public void TryReplicating()
{
var serializer = new JsonDomainEventSerializer();
var source = new InMemoryEventStore();
var destination = new InMemoryEventStore();
var seqNo = 0;
Func <string, EventData> getRecognizableEvent = text => serializer.Serialize(new RecognizableEvent(text)
{
Meta =
{
{ DomainEvent.MetadataKeys.AggregateRootId, "268DD0C0-529F-4242-9D53-601A88BB1813" },
{ DomainEvent.MetadataKeys.SequenceNumber, (seqNo).ToString(Metadata.NumberCulture) },
{ DomainEvent.MetadataKeys.GlobalSequenceNumber, (seqNo++).ToString(Metadata.NumberCulture) },
}
});
// arrange
using (var eventReplicator = new EventReplicator(source, destination))
{
eventReplicator.Start();
Thread.Sleep(TimeSpan.FromSeconds(2));
// act
source.Save(Guid.NewGuid(), new[] { getRecognizableEvent("hello") });
source.Save(Guid.NewGuid(), new[] { getRecognizableEvent("there") });
source.Save(Guid.NewGuid(), new[] { getRecognizableEvent("my") });
source.Save(Guid.NewGuid(), new[] { getRecognizableEvent("friend") });
Thread.Sleep(TimeSpan.FromSeconds(1));
}
// assert
var greeting = string.Join(" ", destination
.Select(x => serializer.Deserialize(x))
.OfType <RecognizableEvent>()
.Select(e => e.Id));
Assert.That(greeting, Is.EqualTo("hello there my friend"));
}
public void IndexSpeedTest(bool useIndexes, int numberOfQueries, int numberOfEvents)
{
var sequenceNumbers = new Dictionary <string, long>();
var serializer = new JsonDomainEventSerializer();
try
{
var database = MongoHelper.InitializeTestDatabase();
database.Drop();
var eventStore = new MongoDbEventStore(database, "events", automaticallyCreateIndexes: useIndexes);
var random = new Random(DateTime.Now.GetHashCode());
var aggregateRootIds = Enumerable.Range(0, 1000).Select(i => i.ToString()).ToArray();
Func <string, long> getNextSequenceNumber = id => !sequenceNumbers.ContainsKey(id) ? (sequenceNumbers[id] = 0) : ++sequenceNumbers[id];
Func <string> randomAggregateRootId = () => aggregateRootIds[random.Next(aggregateRootIds.Length)];
var events = Enumerable.Range(1, numberOfEvents)
.Select(i => Event(getNextSequenceNumber, randomAggregateRootId()))
.ToList();
TakeTime("Insert " + events.Count + " events", () =>
{
foreach (var e in events)
{
eventStore.Save(Guid.NewGuid(), new[] { serializer.Serialize(e) });
}
});
TakeTime("Execute " + numberOfQueries + " queries", () => numberOfQueries.Times(() => eventStore.Load(randomAggregateRootId()).ToList()));
}
finally
{
Console.WriteLine(@"This is how far we got:
{0}", string.Join(Environment.NewLine, sequenceNumbers.Select(kvp => string.Format(" {0}: {1}", kvp.Key, kvp.Value))));
}
}
public void SaveEvent <TDomainEvent, TAggregateRoot>(TDomainEvent e)
where TAggregateRoot : AggregateRoot, new()
where TDomainEvent : DomainEvent <TAggregateRoot>
{
_eventStore.Save(Guid.NewGuid(), new[] { _domainEventSerializer.Serialize(e) });
}