private void EnsureConnection()
{
var tcs = new TaskCompletionSource <object>();
if (Interlocked.CompareExchange(ref _connectingTask, tcs.Task, null) != null)
{
// Give all clients the same task for reconnecting
return;
}
try
{
if (_connection == null)
{
_connection = new RedisConnection(_server, _port, password: _password);
_connection.Closed += (sender, e) =>
{
// Reconnect on close
Disconnect();
EnsureConnection();
};
}
// Open the connection
_connection.Open().ContinueWith(task =>
{
if (task.IsFaulted)
{
tcs.SetException(task.Exception);
}
else if (task.IsCanceled)
{
tcs.SetCanceled();
}
else
{
try
{
// Initialize the subscriber channel
var channel = _connection.GetOpenSubscriberChannel();
// Subscribe to the bus event
channel.Subscribe(_eventKey, OnMessage);
// Mark the connection as ready
_connectionReady = true;
// Mark the task as completed
tcs.SetResult(null);
}
catch (Exception ex)
{
tcs.SetException(ex);
}
}
});
}
catch (Exception ex)
{
tcs.SetException(ex);
}
}
private void Disconnect()
{
Interlocked.Exchange(ref _connectingTask, null);
_connectionReady = false;
_connection = null;
}