public static async Task PersistCommitAsync(
this IEventStoreConnection connection, Commit commit, int pageSize = 512)
{
var expectedVersion = commit.Version - commit.Events.Count();
var expectedEventStreamVersion = expectedVersion == 0
? ExpectedVersion.NoStream
: expectedVersion;
if (commit.Events.Count < pageSize)
{
await connection.AppendToStreamAsync(commit.StreamId, expectedEventStreamVersion, commit.Events)
.ConfigureAwait(false);
}
else
{
var transaction = await connection.StartTransactionAsync(commit.StreamId, expectedEventStreamVersion)
.ConfigureAwait(false);
for (var i = 0; i < commit.Events.Count; i += pageSize)
{
await transaction.WriteAsync(commit.Events.Skip(i).Take(pageSize))
.ConfigureAwait(false);
}
await transaction.CommitAsync()
.ConfigureAwait(false);
}
}
public static WriteResult AppendToStream(this IEventStoreConnection con, string stream, int expectedVersion, IEnumerable<EventData> events, UserCredentials userCredentials = null)
{
var task = con.AppendToStreamAsync(stream, expectedVersion, events, userCredentials);
task.Wait();
return task.Result;
}
