private void OnConnectionClosing(IConnection c = null)
{
int currentLength;
if (c != null)
{
var removalInfo = _connections.RemoveAndCount(c);
currentLength = removalInfo.Item2;
var hasBeenRemoved = removalInfo.Item1;
if (!hasBeenRemoved)
{
// It has been already removed (via event or direct call)
// When it was removed, all the following checks have been made
// No point in doing them again
return;
}
HostConnectionPool.Logger.Info("Pool #{0} for host {1} removed a connection, new length: {2}",
GetHashCode(), _host.Address, currentLength);
}
else
{
currentLength = _connections.Count;
}
if (IsClosing || currentLength >= _expectedConnectionLength)
{
// No need to reconnect
return;
}
// We are using an IO thread
Task.Run(async() =>
{
// Use a lock for avoiding concurrent calls to SetNewConnectionTimeout()
await _allConnectionClosedEventLock.WaitAsync().ConfigureAwait(false);
try
{
if (currentLength == 0)
{
// All connections have been closed
// If the node is UP, we should stop attempting to reconnect
if (_host.IsUp && AllConnectionClosed != null)
{
// Raise the event and wait for a caller to decide
AllConnectionClosed(_host, this);
return;
}
}
SetNewConnectionTimeout(_reconnectionSchedule);
}
finally
{
_allConnectionClosedEventLock.Release();
}
}).Forget();
}