static async Task DoBatchAppendAsync(BatchAppendContext context)
{
var eventList = new List <DomainEventStream>();
while (context.EventQueue.Count > 0)
{
var evnt = context.EventQueue.Dequeue();
eventList.Add(evnt);
if (eventList.Count == context.BatchSize)
{
context.EventList = eventList;
await BatchAppendAsync(context);
return;
}
}
if (eventList.Count > 0)
{
context.EventList = eventList;
await BatchAppendAsync(context);
}
Console.WriteLine("batch append throughput: {0} events/s", 1000 * context.FinishedCount / context.Watch.ElapsedMilliseconds);
}
static void BatchAppendAsyncTest()
{
Console.WriteLine("");
var aggreagateRootId1 = ObjectId.GenerateNewStringId();
var aggreagateRootId2 = ObjectId.GenerateNewStringId();
var count = int.Parse(ConfigurationManager.AppSettings["batchAppendAsyncount"]);
var batchSize = int.Parse(ConfigurationManager.AppSettings["batchSize"]);
var printSize = count / 10;
var finishedCount = 0;
var eventStore = ObjectContainer.Resolve <IEventStore>();
var eventQueue = new Queue <DomainEventStream>();
for (var i = 1; i <= count; i++)
{
var aggregateRootId = i % 2 == 0 ? aggreagateRootId1 : aggreagateRootId2;
var evnt = new TestEvent
{
AggregateRootId = aggregateRootId,
AggregateRootStringId = aggregateRootId,
Version = i
};
var eventStream = new DomainEventStream(ObjectId.GenerateNewStringId(), aggregateRootId, "SampleAggregateRootTypeName", DateTime.Now, new IDomainEvent[] { evnt });
eventQueue.Enqueue(eventStream);
}
var watch = Stopwatch.StartNew();
var context = new BatchAppendContext
{
BatchSize = batchSize,
PrintSize = printSize,
FinishedCount = finishedCount,
EventStore = eventStore,
EventQueue = eventQueue,
Watch = watch
};
Console.WriteLine("start to batch append test, totalCount:" + count);
DoBatchAppendAsync(context).Wait();
}
static async void BatchAppendAsync(BatchAppendContext context)
{
var result = await context.EventStore.BatchAppendAsync(context.EventList);
if (result.Data == EventAppendResult.DuplicateEvent)
{
Console.WriteLine("duplicated event stream.");
return;
}
else if (result.Data == EventAppendResult.DuplicateCommand)
{
Console.WriteLine("duplicated command execution.");
return;
}
var local = Interlocked.Add(ref context.FinishedCount, context.EventList.Count);
if (local % context.PrintSize == 0)
{
Console.WriteLine("batch appended {0}, time:{1}", local, context.Watch.ElapsedMilliseconds);
}
DoBatchAppend(context);
}
