private void Execute <T>(Func <IDbCommand, Task <T> > commandFunc, DispatchingTaskCompletionSource <T> tcs)
{
IDbConnection connection = null;
try
{
connection = _dbProviderFactory.CreateConnection();
connection.ConnectionString = ConnectionString;
var command = CreateCommand(connection);
connection.Open();
commandFunc(command)
.Then(result => tcs.SetResult(result))
.Catch(ex => tcs.SetUnwrappedException(ex), Trace)
.Finally(state =>
{
var conn = (DbConnection)state;
if (conn != null)
{
conn.Dispose();
}
}, connection);
}
catch (Exception)
{
if (connection != null)
{
connection.Dispose();
}
throw;
}
}
private Task ExecuteHubEvent(IRequest request, string connectionId, Func <IHub, Task> action)
{
var hubs = GetHubs(request, connectionId).ToList();
var operations = hubs.Select(instance => action(instance).OrEmpty().Catch(Trace)).ToArray();
if (operations.Length == 0)
{
DisposeHubs(hubs);
return(TaskAsyncHelper.Empty);
}
var tcs = new DispatchingTaskCompletionSource <object>();
Task.Factory.ContinueWhenAll(operations, tasks =>
{
DisposeHubs(hubs);
var faulted = tasks.FirstOrDefault(t => t.IsFaulted);
if (faulted != null)
{
tcs.SetUnwrappedException(faulted.Exception);
}
else if (tasks.Any(t => t.IsCanceled))
{
tcs.SetCanceled();
}
else
{
tcs.SetResult(null);
}
});
return(tcs.Task);
}
private void Execute <T>(Func <IQuery, Task <T> > commandFunc, DispatchingTaskCompletionSource <T> tcs)
{
using (var session = SessionFactoryInfo.SessionFactory.OpenSession())
{
var command = CreateCommand(session);
commandFunc(command)
.Then(result => tcs.SetResult(result))
.Catch(ex => tcs.SetUnwrappedException(ex), Trace);
}
}
public virtual Task <int> ExecuteNonQueryAsync()
{
var tcs = new DispatchingTaskCompletionSource <int>();
return(new Task <int>(() =>
{
int a;
try
{
a = ExecuteNonQuery();
tcs.SetResult(a);
return a;
}
catch (Exception ex)
{
tcs.SetUnwrappedException(ex);
throw;
}
}));
}
private void SendImpl(IEnumerator <IGrouping <string, Message> > enumerator, DispatchingTaskCompletionSource <object> taskCompletionSource)
{
send:
if (!enumerator.MoveNext())
{
taskCompletionSource.TrySetResult(null);
}
else
{
IGrouping <string, Message> group = enumerator.Current;
// Get the channel index we're going to use for this message
int index = (int)((uint)_sipHashBasedComparer.GetHashCode(group.Key) % StreamCount);
Debug.Assert(index >= 0, "Hash function resulted in an index < 0.");
Task sendTask = StreamManager.Send(index, group.ToArray()).Catch(_trace);
if (sendTask.IsCompleted)
{
try
{
sendTask.Wait();
goto send;
}
catch (Exception ex)
{
taskCompletionSource.SetUnwrappedException(ex);
}
}
else
{
sendTask.Then((enumer, tcs) => SendImpl(enumer, tcs), enumerator, taskCompletionSource)
.ContinueWithNotComplete(taskCompletionSource);
}
}
}
