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))));
}
}
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)));
});
}