public async Task <WriteResult> SetStreamMetadataAsync(string stream, long expectedMetastreamVersion,
byte[] metadata, UserCredentials userCredentials = null)
{
Ensure.NotNullOrEmpty(stream, "stream");
if (SystemStreams.IsMetastream(stream))
{
throw new ArgumentException(
string.Format("Setting metadata for metastream '{0}' is not supported.", stream), nameof(stream));
}
var source = TaskCompletionSourceFactory.Create <WriteResult>();
var metaevent = new EventData(Guid.NewGuid(), SystemEventTypes.StreamMetadata, true,
metadata ?? Empty.ByteArray, null);
var operation = new AppendToStreamOperation(Settings.Log,
source,
Settings.RequireLeader,
SystemStreams.MetastreamOf(stream),
expectedMetastreamVersion,
new[] { metaevent },
userCredentials);
await EnqueueOperation(operation).ConfigureAwait(false);
return(await source.Task.ConfigureAwait(false));
}
public Task AppendToStreamAsync(string stream, int expectedVersion, IEnumerable <IEvent> events)
{
Ensure.NotNullOrEmpty(stream, "stream");
Ensure.NotNull(events, "events");
var source = new TaskCompletionSource <object>();
var operation = new AppendToStreamOperation(source, Guid.NewGuid(), stream, expectedVersion, events);
EnqueueOperation(operation);
return(source.Task);
}
public async Task <WriteResult> AppendToStreamAsync(string stream, long expectedVersion, IEnumerable <EventData> events, UserCredentials userCredentials = null)
{
// ReSharper disable PossibleMultipleEnumeration
Ensure.NotNullOrEmpty(stream, "stream");
Ensure.NotNull(events, "events");
var source = new TaskCompletionSource <WriteResult>(TaskCreationOptions.RunContinuationsAsynchronously);
var operation = new AppendToStreamOperation(Settings.Log, source, Settings.RequireMaster,
stream, expectedVersion, events, userCredentials);
await EnqueueOperation(operation).ConfigureAwait(false);
return(await source.Task.ConfigureAwait(false));
// ReSharper restore PossibleMultipleEnumeration
}
