private static string Push (string queueName, string message) {
// Notification
Notification n = new Notification();
n.Action = "publish";
n.Expires = DateTime.Now.AddHours(1);
n.Categories = new Category[2];
n.Categories[0] = new Category();
n.Categories[0].Term = message;
n.Categories[1] = new Category();
n.Categories[1].Term = "indie";
// The actual Queue Message to send
Message pm = new Message();
pm.Op.Type = OperationType.PushMessage;
pm.QueueId = queueName;
Console.WriteLine(queueName);
Console.WriteLine(n.ToString());
pm.Payload = Convert.ToBase64String(Notification.Serialize(n));
// An event handler
MessageEvent me = new MessageEvent();
me.Message = pm;
// Let's see what the response of the server was
me.MessageReceived += new MessageEventHandler(queue_MessageReceived);
QueueClientPool.Enqueue(me);
return "message sent";
}
public MessageStateEventArgs ( string xml ) {
try {
message = Message.Parse(xml);
} catch (Exception ex) {
Console.WriteLine(ex.ToString());
throw ex;
}
}
private void CheckQueuesForNewMessages ( object info ) {
if (poller.Service.Connection != null) {
Nuxleus.Bucker.Message lm = new Nuxleus.Bucker.Message();
lm.Op.Type = OperationType.ListMessages;
foreach (string queueId in monitoredQueues) {
lm.QueueId = queueId;
poller.Service.Connection.BeginSend(Nuxleus.Bucker.Message.Serialize(lm));
}
lm = null;
}
}
private void FailureRaised ( ISocketConnection sender, Exception ex ) {
// since the client generated an exceptipon we will disconnect it
// as soon as the error message below is sent
clientsToDisconnect.Add(sender.SocketHandle);
// we warn the client something happened
Nuxleus.Bucker.Message m = new Nuxleus.Bucker.Message();
m.Type = "error";
m.Op = null;
m.Error = new Nuxleus.Bucker.Error();
m.Error.Type = "internal-server-error";
m.Error.Code = 500;
sender.BeginSend(Nuxleus.Bucker.Message.Serialize(m));
}
private void MessageReceived(ISocketConnection sender, IMessage message)
{
if (clientsToDisconnect.Contains(sender.SocketHandle))
{
// if the client has been scheduled to be closed we don't process any of its
// incoming data
return;
}
Nuxleus.Bucker.Message m = Nuxleus.Bucker.Message.Parse(message.InnerMessage);
Nuxleus.Bucker.Message responseToSend = null;
switch (m.Op.Type)
{
case OperationType.GetMessage:
responseToSend = HandleGetMessageRequest(m);
break;
case OperationType.ListMessages:
responseToSend = HandleListMessagesRequest(m);
break;
case OperationType.PushMessage:
Console.WriteLine(m.ToString());
responseToSend = HandlePushMessageRequest(m);
break;
case OperationType.DeleteMessage:
responseToSend = HandleDeleteMessageRequest(m);
break;
case OperationType.NewQueue:
responseToSend = HandleNewQueueRequest(m);
break;
case OperationType.DeleteQueue:
responseToSend = HandleDeleteQueueRequest(m);
break;
case OperationType.ListQueues:
responseToSend = HandleListQueuesRequest(m);
break;
default:
responseToSend = new Nuxleus.Bucker.Message();
responseToSend.Type = "error";
responseToSend.Op = null;
responseToSend.Error = new Nuxleus.Bucker.Error();
responseToSend.Error.Type = "operation-not-allowed";
responseToSend.Error.Code = 405;
break;
}
if (responseToSend != null)
{
sender.BeginSend(Nuxleus.Bucker.Message.Serialize(responseToSend));
responseToSend = null;
}
}
private Nuxleus.Bucker.Message HandleGetMessageRequest(Nuxleus.Bucker.Message m)
{
Nuxleus.Bucker.Message err = CheckQueue(m.QueueId);
if (err != null)
return err;
err = CheckMessageId(m.MessageId);
if (err != null)
return err;
string unreadKey = String.Format("{0}.new", m.QueueId);
string[] keys = { m.QueueId, unreadKey, m.MessageId };
IDictionary<string,object> result = mc.Get(keys);
object keyValue;
if (!mc.TryGet(m.QueueId, out keyValue))
{
m.Type = "error";
m.Op = null;
m.Error = new Nuxleus.Bucker.Error();
m.Error.Type = "not-found";
m.Error.Code = 404;
m.Error.Message = String.Format("'{0}' is not an existing queue", m.QueueId);
return m;
}
string mids = (string)result[m.QueueId];
object messageValue;
if (mc.TryGet(m.MessageId, out messageValue))
{
if (m.Op.Peek == false)
{
string unread = (string)result[unreadKey];
if (unread.Contains(m.MessageId))
{
unread = unread.Replace(m.MessageId, "");
unread = unread.Replace(",,", "");
unread = unread.Trim(comma);
mc.Store(StoreMode.Set, unreadKey, unread);
}
}
string visibilityKey = String.Format("{0}.visibility", m.MessageId);
double visibilityTimeout = (double)mc.Get(visibilityKey);
double now = UnixTimestampNow;
if (now > visibilityTimeout)
{
if (m.Op.Peek == false)
mc.Store(StoreMode.Set, visibilityKey, now + 30);
string payload = String.Empty;
if (result.ContainsKey(m.MessageId))
{
payload = (string)result[m.MessageId];
if (payload == null)
payload = String.Empty;
}
m.Type = "response";
m.Payload = payload;
}
else
{
err = new Nuxleus.Bucker.Message();
err.Type = "error";
err.Op = null;
err.Error = new Nuxleus.Bucker.Error();
err.Error.Type = "invisible";
err.Error.Code = 404;
err.Error.Message = String.Format("'{0}' is not visible", m.MessageId);
}
}
else
{
err = new Nuxleus.Bucker.Message();
err.Type = "error";
err.Op = null;
err.Error = new Nuxleus.Bucker.Error();
err.Error.Type = "not-found";
err.Error.Code = 404;
err.Error.Message = String.Format("'{0}' was not found in the queue '{1}'", m.MessageId, m.QueueId);
}
return m;
}
private Nuxleus.Bucker.Message HandleListQueuesRequest(Nuxleus.Bucker.Message m)
{
string queues = (string)mc.Get(rootQueueId);
if (queues == null)
queues = String.Empty;
string[] queuesList = queues.Split(',');
Nuxleus.Bucker.Message lm = new Nuxleus.Bucker.Message();
lm.Type = "response";
lm.Op.Type = OperationType.ListQueues;
if (queues == String.Empty)
{
lm.Queues = new string[0];
}
else
{
lm.Queues = new string[queuesList.Length];
Array.Copy(queuesList, lm.Queues, queuesList.Length);
}
return lm;
}
private Nuxleus.Bucker.Message HandleDeleteQueueRequest(Nuxleus.Bucker.Message m)
{
Nuxleus.Bucker.Message err = CheckQueueId(m.QueueId);
if (err != null)
return err;
string qid = m.QueueId;
string keys = (string)mc.Get(qid);
if ((keys != null) && (keys != String.Empty))
{
if (m.Op.Force == false)
{
m = new Nuxleus.Bucker.Message();
m.Type = "error";
m.Op = null;
m.Error = new Nuxleus.Bucker.Error();
m.Error.Type = "queue-not-empty";
m.Error.Code = 400;
m.Error.Message = String.Format("'{0}' is not empty. Either delete all the messages first or set the force attribute on the 'op' element", qid);
return m;
}
else
{
// Deleting all the messages attached to that queue
string[] keysList = keys.Split(',');
foreach (string key in keysList)
{
mc.Remove(String.Format("{0}.visibility", key));
mc.Remove(key);
}
}
}
mc.Remove(qid);
mc.Remove(String.Format("{0}.new", qid));
string queues = (string)mc.Get(rootQueueId);
if (queues == null)
queues = String.Empty;
if (queues.Contains(qid))
{
queues = queues.Replace(qid, "");
queues = queues.Replace(",,", "");
queues = queues.Trim(comma);
mc.Store(StoreMode.Set, rootQueueId, queues);
}
m.Type = "response";
return m;
}
private Nuxleus.Bucker.Message HandleNewQueueRequest(Nuxleus.Bucker.Message m)
{
Nuxleus.Bucker.Message err = CheckQueueId(m.QueueId);
if (err != null)
return err;
string queues = (string)mc.Get(rootQueueId);
if (queues == null)
{ // just in case
queues = String.Empty;
}
if (!queues.Contains(m.QueueId))
{
//mc.Add(m.QueueId, String.Empty);
//mc.Add(String.Format("{0}.new", m.QueueId), String.Empty);
//if (queues == String.Empty) {
// queues = m.QueueId;
//} else {
// queues = String.Format("{0},{1}", queues, m.QueueId);
//}
//mc.Set(rootQueueId, queues);
m.Type = "response";
}
else
{
// Houston we have a conflict!
string qid = m.QueueId;
m = new Nuxleus.Bucker.Message();
m.Type = "error";
m.Op = null;
m.Error = new Nuxleus.Bucker.Error();
m.Error.Type = "conflict";
m.Error.Code = 409;
m.Error.Message = String.Format("'{0}' is already an existing queue", qid);
}
return m;
}
private Nuxleus.Bucker.Message CheckQueue(string queueId)
{
Nuxleus.Bucker.Message err = CheckQueueId(queueId);
if (err != null)
return err;
string queues = (string)mc.Get(rootQueueId);
if ((queues == null) || (queues == String.Empty) || !queues.Contains(queueId))
{
Nuxleus.Bucker.Message m = new Nuxleus.Bucker.Message();
m.Type = "error";
m.Op = null;
m.Error = new Nuxleus.Bucker.Error();
m.Error.Type = "not-found";
m.Error.Code = 404;
m.Error.Message = String.Format("'{0}' is not an existing queue", queueId);
return m;
}
return null;
}
private Nuxleus.Bucker.Message CheckMessageId(string messageId)
{
if ((messageId == null) || (messageId == String.Empty))
{
Nuxleus.Bucker.Message m = new Nuxleus.Bucker.Message();
m.Type = "error";
m.Op = null;
m.Error = new Nuxleus.Bucker.Error();
m.Error.Type = "message-invalid";
m.Error.Code = 400;
m.Error.Message = "Missing message id value";
return m;
}
return null;
}
public MessageStateEventArgs ( Message m ) {
message = m;
}
/// <summary>
/// Send a message instance.
/// </summary>
/// <param name="m">Message instance.</param>
public void Send ( Message m ) {
this.Send(m.ToString());
}
private void HandleMessageReceived ( Nuxleus.Bucker.Message m ) {
// When a message is received we delete it from the queue as
// it has no purpose anymore
Nuxleus.Bucker.Message dm = new Nuxleus.Bucker.Message();
dm.Op.Type = OperationType.DeleteMessage;
dm.QueueId = m.QueueId;
dm.MessageId = m.MessageId;
Service.Connection.BeginSend(Nuxleus.Bucker.Message.Serialize(dm));
LLUP.Notification n = LLUP.Notification.Parse(Convert.FromBase64String(m.Payload));
postOffice.Post(n);
}
private void HandleListOfNewMessages ( Nuxleus.Bucker.Message m ) {
if (m.Messages != null) {
Nuxleus.Bucker.Message gm = new Nuxleus.Bucker.Message();
gm.Op.Type = OperationType.GetMessage;
gm.QueueId = m.QueueId;
foreach (string mid in m.Messages) {
gm.MessageId = mid;
Service.Connection.BeginSend(Nuxleus.Bucker.Message.Serialize(gm));
}
}
}
private void ClientConnected ( ISocketConnection sender ) {
// we are now connected to the queue server
// let's ensure the queues we monitor are created too
Nuxleus.Bucker.Message nq = new Nuxleus.Bucker.Message();
nq.Op.Type = OperationType.NewQueue;
foreach (string queueId in monitoredQueues) {
nq.QueueId = queueId;
sender.BeginSend(Nuxleus.Bucker.Message.Serialize(nq));
}
StartMonitoring();
}
public static byte[] Serialize ( Message message, Encoding encoding ) {
return encoding.GetBytes(message.ToString());
}
public static byte[] Serialize ( Message message ) {
return Encoding.UTF8.GetBytes(message.ToString());
}
