public async Task <PooledConnection> CreateOpenedAsync(CancellationToken cancellationToken)
{
try
{
var stopwatch = Stopwatch.StartNew();
_connectingWaitStatus = await _pool._maxConnectingQueue.WaitAsync(_connectingTimeout, cancellationToken).ConfigureAwait(false);
stopwatch.Stop();
_pool._poolState.ThrowIfNotReady();
if (_connectingWaitStatus == SemaphoreSlimSignalable.SemaphoreWaitResult.TimedOut)
{
_pool.CreateTimeoutException(stopwatch, $"Timed out waiting for in connecting queue after {stopwatch.ElapsedMilliseconds}ms.");
}
var connection = await CreateOpenedInternalAsync(cancellationToken).ConfigureAwait(false);
return(connection);
}
catch (Exception ex)
{
_pool._connectionExceptionHandler.HandleExceptionOnOpen(ex);
throw;
}
}
private TimeSpan EnsureTimeout(Stopwatch stopwatch)
{
var timeSpentInWaitQueue = stopwatch.Elapsed;
var timeout = _timeout - timeSpentInWaitQueue;
if (timeout < TimeSpan.Zero)
{
throw _pool.CreateTimeoutException(stopwatch, $"Timed out waiting for a connection after {timeSpentInWaitQueue.TotalMilliseconds}ms.");
}
return(timeout);
}