protected override async Task <SSSBMessage> ReadMessage(bool isPrimaryReader, long taskId, CancellationToken token, SqlConnection state)
{
SqlConnection dbconnection = state;
// reading messages from the queue
IDataReader reader = null;
try
{
if (isPrimaryReader)
{
reader = await _manager.ReceiveMessagesAsync(dbconnection, this._service.QueueName,
DEFAULT_FETCH_SIZE,
(int)DefaultWaitForTimeout.TotalMilliseconds,
_conversation_group,
DEFAULT_COMMAND_BEHAVIOR,
token).ConfigureAwait(false);
}
else
{
reader = await _manager.ReceiveMessagesNoWaitAsync(dbconnection, this._service.QueueName,
DEFAULT_FETCH_SIZE,
_conversation_group,
DEFAULT_COMMAND_BEHAVIOR,
token).ConfigureAwait(false);
}
// no result after cancellation
if (reader == null)
{
return(null);
}
return(reader.Read() ? this.FillMessageFromReader(reader) : null);
}
catch (OperationCanceledException)
{
throw;
}
catch (PPSException)
{
throw;
}
catch (Exception ex)
{
var exception = new PPSException(string.Format("ReadMessages error on queue: {0}, isPrimaryListener: {1}", this._service.QueueName, isPrimaryReader), ex);
Log.LogError(ErrorHelper.GetFullMessage(exception));
throw exception;
}
finally
{
if (reader != null)
{
reader.Close();
}
}
}
