public IEnumerable <HistoryMessage> GetAllProcessedMessages(int?batchSize = null)
{
int count = 0;
var enumerator = _messageHistory.GetEnumerator();
while (enumerator.MoveNext() && count++ != batchSize)
{
var bookmark = enumerator.Current;
bookmark.QueueName = _queueName;
yield return(_messageHistory.ReadMessageWithId <HistoryMessage>(bookmark, _queueName, x =>
{
x.MovedToHistoryAt = _messageHistory.ForColumnType <DateTimeColumn>().Get("moved_to_history_at");
}));
}
}
public PersistentMessage Dequeue(string subqueue)
{
var enumerator = _messages.GetEnumerator(new StringValueIndex("by_sub_queue", subqueue));
while (enumerator.MoveNext())
{
var id = _messages.GetMessageId();
var status = (MessageStatus)_messages.ForColumnType <IntColumn>().Get("status");
_logger.Debug("Scanning incoming message {2} on '{0}/{1}' with status {3}",
_queueName, subqueue, id, status);
if (status != MessageStatus.ReadyToDeliver)
{
continue;
}
try
{
_messages.Update(() => _messages.ForColumnType <IntColumn>().Set("status", (int)MessageStatus.Processing));
}
catch (EsentErrorException e)
{
_logger.Debug("Write conflict on '{0}/{1}' for {2}, skipping message",
_queueName, subqueue, id);
if (e.Error == JET_err.WriteConflict)
{
continue;
}
throw;
}
var bookmark = enumerator.Current;
bookmark.QueueName = _queueName;
_changeNumberOfMessages(-1);
_logger.Debug("Dequeuing message {2} from '{0}/{1}'",
_queueName, subqueue, id);
return(_messages.ReadMessageWithId <PersistentMessage>(bookmark, _queueName, x =>
{
x.SubQueue = subqueue;
}));
}
return(null);
}
internal void ClearTable(EsentTable table)
{
var enumerator = table.GetEnumerator();
while (enumerator.MoveNext())
{
table.Delete();
}
}
private string[] GetSubqueues(string queueName)
{
var list = new List <string>();
var enumerator = subqueues.GetEnumerator(new StringValueIndex("by_queue", queueName));
while (enumerator.MoveNext())
{
list.Add(subqueues.ForColumnType <StringColumn>().Get("subqueue"));
}
return(list.ToArray());
}
public QueueActions GetQueue(string queueName)
{
QueueActions actions;
if (queuesByName.TryGetValue(queueName, out actions))
{
return(actions);
}
var enumerator = queues.GetEnumerator(new StringValueIndex("pk", queueName));
if (!enumerator.MoveNext())
{
throw new QueueDoesNotExistsException(queueName);
}
queuesByName[queueName] = actions =
new QueueActions(session, dbid, queueName, GetSubqueues(queueName), this,
i => AddToNumberOfMessagesIn(queueName, i));
return(actions);
}
