/// <summary>
/// Poll an message from a queue.
/// </summary>
/// <param name="queueName">Queue name (e.g. "/queue/foo").</param>
/// <param name="timeout">Time, in miliseconds, before the agent stops waiting for a message, if the timeout is bigger than 0. If timeout is reached a TimeoutException is thrown. If the value is zero, than the agent will wait forever. A negative value means that the client doesn't want to wait if there are no messages is local agent's queue.</param>
/// <param name="reserveTime">Message reserve time, in milliseconds. Polled messages are reserved, by default, for 15 minutes. If clients prefer a different reserve time, bigger or small, they can specify it.</param>
/// <param name="acceptRequest">An AcceptRequest instance.</param>
/// <returns>A NetNotification instance. In case of connection fail or if there are no messages in local agent's queue when timeout is negative null is returned.</returns>
public NetNotification Poll(String queueName, long timeout, long reserveTime, AcceptRequest acceptRequest)
{
if (IsClosed())
{
return(null);
}
NetPoll poll = new NetPoll(queueName, timeout);
NetAction action = new NetAction(NetAction.ActionType.POLL);
action.PollMessage = poll;
NetMessage netMessage = new NetMessage(action);
if (reserveTime != -1)
{
netMessage.Headers.Add("RESERVE_TIME", reserveTime.ToString());
}
protocolHandler.HandleOutgoingMessage(netMessage, acceptRequest);
NetNotification notification = protocolHandler.GetSyncMessage(queueName, netMessage);
if (notification == BrokerProtocolHandler.UnblockNotification)
{
throw new TimeoutException();
}
if (notification == BrokerProtocolHandler.NoMessageNotification)
{
return(null);
}
return(notification);
}
private static Poll getPollMessage(NetMessage message)
{
NetPoll netPoll = message.Action.PollMessage;
Poll poll = new Poll();
poll.Action_id = netPoll.ActionId;
poll.Destination = netPoll.Destination;
poll.Timeout = netPoll.Timeout;
return(poll);
}
/// <summary>
/// Poll an message from a queue.
/// </summary>
/// <param name="queueName">Queue name (e.g. "/queue/foo").</param>
/// <param name="timeout">Time, in miliseconds, before the agent stops waiting for a message, if the timeout is bigger than 0. If timeout is reached a TimeoutException is thrown. If the value is zero, than the agent will wait forever. A negative value means that the client doesn't want to wait if there are no messages is local agent's queue.</param>
/// <param name="reserveTime">Message reserve time, in milliseconds. Polled messages are reserved, by default, for 15 minutes. If clients prefer a different reserve time, bigger or small, they can specify it.</param>
/// <param name="acceptRequest">An AcceptRequest instance.</param>
/// <returns>A NetNotification instance. In case of connection fail or if there are no messages in local agent's queue when timeout is negative null is returned.</returns>
public NetNotification Poll(String queueName, long timeout, long reserveTime,AcceptRequest acceptRequest)
{
if (IsClosed())
return null;
NetPoll poll = new NetPoll(queueName, timeout);
NetAction action = new NetAction(NetAction.ActionType.POLL);
action.PollMessage = poll;
NetMessage netMessage = new NetMessage(action);
if (reserveTime != -1)
{
netMessage.Headers.Add("RESERVE_TIME", reserveTime.ToString());
}
protocolHandler.HandleOutgoingMessage(netMessage, acceptRequest);
NetNotification notification = protocolHandler.GetSyncMessage(queueName, netMessage);
if (notification == BrokerProtocolHandler.UnblockNotification)
throw new TimeoutException();
if (notification == BrokerProtocolHandler.NoMessageNotification)
return null;
return notification;
}
