public void should_commit_when_writing_with_exp_ver_any_even_while_somene_is_writing_in_parallel()
{
const string stream = "should_commit_when_writing_with_exp_ver_any_even_while_somene_is_writing_in_parallel";
var transWritesCompleted = new AutoResetEvent(false);
var writesToSameStreamCompleted = new AutoResetEvent(false);
var totalTranWrites = 500;
var totalPlainWrites = 500;
//excplicitly creating stream
using (var store = new EventStoreConnection(MiniNode.Instance.TcpEndPoint))
store.CreateStream(stream, new byte[0]);
//500 events during transaction
ThreadPool.QueueUserWorkItem(_ =>
{
using (var store = new EventStoreConnection(MiniNode.Instance.TcpEndPoint))
{
var transaction = store.StartTransaction(stream, ExpectedVersion.Any);
var writes = new List<Task>();
for (int i = 0; i < totalTranWrites; i++)
{
if (i % 10 == 0)
writes.RemoveAll(write => write.IsCompleted);
writes.Add(store.TransactionalWriteAsync(transaction.TransactionId,
transaction.Stream,
new[] { new TestEvent((i + 1).ToString(), "trans write") }));
}
Task.WaitAll(writes.ToArray());
store.CommitTransaction(transaction.TransactionId, transaction.Stream);
transWritesCompleted.Set();
}
});
//500 events to same stream in parallel
ThreadPool.QueueUserWorkItem(_ =>
{
using (var store = new EventStoreConnection(MiniNode.Instance.TcpEndPoint))
{
var writes = new List<Task>();
for (int i = 0; i < totalPlainWrites; i++)
{
if (i % 10 == 0)
writes.RemoveAll(write => write.IsCompleted);
writes.Add(store.AppendToStreamAsync(stream,
ExpectedVersion.Any,
new[] {new TestEvent((i + 1).ToString(), "plain write")}));
}
Task.WaitAll(writes.ToArray());
writesToSameStreamCompleted.Set();
}
});
transWritesCompleted.WaitOne();
writesToSameStreamCompleted.WaitOne();
//check all written
using (var store = new EventStoreConnection(MiniNode.Instance.TcpEndPoint))
{
var slice = store.ReadEventStreamForward(stream, 0, totalTranWrites + totalPlainWrites + 1);
Assert.That(slice.Events.Length, Is.EqualTo(totalTranWrites + totalPlainWrites + 1));
Assert.That(slice.Events.Count(ent => Encoding.UTF8.GetString(ent.Metadata) == "trans write"), Is.EqualTo(totalTranWrites));
Assert.That(slice.Events.Count(ent => Encoding.UTF8.GetString(ent.Metadata) == "plain write"), Is.EqualTo(totalPlainWrites));
}
}