/// <summary>
/// Saves a MDSMessageRecord object.
/// </summary>
/// <param name="messageRecord"></param>
public int StoreMessage(MDSMessageRecord messageRecord)
{
lock (_messages)
{
messageRecord.Id = (++_lastRecordId);
_messages.Add(messageRecord.Id, messageRecord);
return(messageRecord.Id);
}
}
/// <summary>
/// Saves a MDSMessageRecord object.
/// </summary>
/// <param name="messageRecord"></param>
public int StoreMessage(MDSMessageRecord messageRecord)
{
lock (_messages)
{
messageRecord.Id = (++_lastRecordId);
_messages.Add(messageRecord.Id, messageRecord);
return messageRecord.Id;
}
}
/// <summary>
/// This method is called when a MDSDataTransferMessage sent to this application.
/// Stores message and adds to queue to send to remote application.
/// </summary>
/// <param name="message">Message</param>
public void EnqueueMessage(MDSDataTransferMessage message)
{
//Create MDSMessageRecord from MDSDataTransferMessage to save message to database
var messageRecord = new MDSMessageRecord(message)
{
NextServer = GetNextServerForMessage(message)
};
//Lock collection to be synchronized.
lock (_waitingMessages)
{
if (message.TransmitRule == MessageTransmitRules.StoreAndForward)
{
//Save message to database
StorageManager.StoreMessage(messageRecord);
/* If these conditions are true, then message also added to _waitingMessages
* and message is sent to appliction from this queue instead of read again from database (for performance reasons):
* - _waitingMessages's message count is smaller than a maximum count (_waitingMessages.Count < MaxMessagesInQueue).
* - All messages in database is also in _waitingMessages (_biggestWaitingMessageIdInList >= _biggestWaitingMessageId)
* That means there is no message that is in database but not in _waitingMessages list.
*/
if (_waitingMessages.Count < MaxMessagesInQueue &&
_biggestWaitingMessageIdInList >= _biggestWaitingMessageId)
{
//Add message to queue.
_waitingMessages.AddLast(new WaitingMessage(messageRecord));
//This message's Id is new biggest id on queue.
_biggestWaitingMessageIdInList = messageRecord.Id;
}
//This message's id is new biggest id in database, so update _biggestWaitingMessageId value
_biggestWaitingMessageId = messageRecord.Id;
}
else
{
//Add message to queue.
_waitingMessages.AddFirst(new WaitingMessage(messageRecord));
}
//Pulse waiting thread that is in wait state because of no message to process.
if (!_waitingForAnError)
{
Monitor.PulseAll(_waitingMessages);
}
Logger.Debug("EnqueueMessage - WaitingMessages.Count = " + _waitingMessages.Count + ", Application = " + Name);
}
}
/// <summary>
/// Saves a MDSMessageRecord.
/// </summary>
/// <param name="messageRecord">MDSMessageRecord object to save</param>
/// <returns>Auto Increment Id of saved message</returns>
public int StoreMessage(MDSMessageRecord messageRecord)
{
var bytesOfMessage = MDSSerializationHelper.SerializeToByteArray(messageRecord.Message);
var id = InsertAndGetLastId(
"INSERT INTO messages(MessageId, DestServer, NextServer, DestApplication, MessageData, MessageDataLength, RecordDate) VALUES(?,?,?,?,?,?,now());",
new OdbcParameter("?MessageId", messageRecord.MessageId),
new OdbcParameter("?DestServer", messageRecord.DestServer),
new OdbcParameter("?NextServer", messageRecord.NextServer),
new OdbcParameter("?DestApplication", messageRecord.DestApplication),
new OdbcParameter("?MessageData", bytesOfMessage),
new OdbcParameter("?MessageDataLength", bytesOfMessage.Length)
);
messageRecord.Id = id;
return id;
}
/// <summary>
/// Saves a MDSMessageRecord.
/// </summary>
/// <param name="messageRecord">MDSMessageRecord object to save</param>
/// <returns>Auto Increment Id of saved message</returns>
public int StoreMessage(MDSMessageRecord messageRecord)
{
var bytesOfMessage = MDSSerializationHelper.SerializeToByteArray(messageRecord.Message);
var id = InsertAndGetLastId(
"INSERT INTO Messages(MessageId, DestServer, NextServer, DestApplication, MessageData, MessageDataLength, RecordDate) VALUES(@MessageId, @DestServer, @NextServer, @DestApplication, @MessageData, @MessageDataLength, GetDate())",
new SqlParameter("@MessageId", messageRecord.MessageId),
new SqlParameter("@DestServer", messageRecord.DestServer),
new SqlParameter("@NextServer", messageRecord.NextServer),
new SqlParameter("@DestApplication", messageRecord.DestApplication),
new SqlParameter("@MessageData", bytesOfMessage),
new SqlParameter("@MessageDataLength", bytesOfMessage.Length)
);
messageRecord.Id = id;
return(id);
}
public int StoreMessage(MDSMessageRecord messageRecord)
{
int id = 0;
var bytesOfMessage = MDSSerializationHelper.SerializeToByteArray(messageRecord.Message);
//Buscando id e insertando
while (true)
{
var collection = _database.GetCollection <MDSMessageRecord>(_tableName);
int lastId = collection.AsQueryable()
.OrderByDescending(m => m.Id)
.Select(m => m.Id)
.FirstOrDefault();
id = lastId + 1;
messageRecord.Id = id;
try
{
collection.InsertOne(messageRecord);
}
catch (Exception writeError)
{
if (writeError.Message.Contains("11000"))
{
continue;
}
else
{
throw writeError;
}
}
break;
}
return(id);
}
/// <summary>
/// Creates a new WaitingMessage object.
/// </summary>
/// <param name="messageRecord">Message record in storage manager</param>
public WaitingMessage(MDSMessageRecord messageRecord)
{
MessageRecord = messageRecord;
State = WaitingMessageStates.ReadyToSend;
}
/// <summary>
/// Saves a MDSMessageRecord.
/// </summary>
/// <param name="messageRecord">MDSMessageRecord object to save</param>
/// <returns>Auto Increment Id of saved message</returns>
public int StoreMessage(MDSMessageRecord messageRecord)
{
lock (_syncObj)
{
var bytesOfMessage = MDSSerializationHelper.SerializeToByteArray(messageRecord.Message);
var id = InsertAndGetLastId(
"INSERT INTO messages(MessageId, DestServer, NextServer, DestApplication, MessageData, MessageDataLength, RecordDate) VALUES(@MessageId,@DestServer,@NextServer,@DestApplication,@MessageData,@MessageDataLength,@RecordDate);",
new SQLiteParameter("@MessageId", messageRecord.MessageId),
new SQLiteParameter("@DestServer", messageRecord.DestServer),
new SQLiteParameter("@NextServer", messageRecord.NextServer),
new SQLiteParameter("@DestApplication", messageRecord.DestApplication),
new SQLiteParameter("@MessageData", bytesOfMessage),
new SQLiteParameter("@MessageDataLength", bytesOfMessage.Length),
new SQLiteParameter("@RecordDate", DateTime.Now)
);
messageRecord.Id = id;
return id;
}
}
/// <summary>
/// Creates a new WaitingMessage object.
/// </summary>
/// <param name="messageRecord">Message record in storage manager</param>
public WaitingMessage(MDSMessageRecord messageRecord)
{
MessageRecord = messageRecord;
State = WaitingMessageStates.ReadyToSend;
}
/// <summary>
/// This method is called when a MDSDataTransferMessage sent to this application.
/// Stores message and adds to queue to send to remote application.
/// </summary>
/// <param name="message">Message</param>
public void EnqueueMessage(MDSDataTransferMessage message)
{
//Create MDSMessageRecord from MDSDataTransferMessage to save message to database
var messageRecord = new MDSMessageRecord(message) {NextServer = GetNextServerForMessage(message)};
//Lock collection to be synchronized.
lock (_waitingMessages)
{
if (message.TransmitRule == MessageTransmitRules.StoreAndForward)
{
//Save message to database
StorageManager.StoreMessage(messageRecord);
/* If these conditions are true, then message also added to _waitingMessages
* and message is sent to appliction from this queue instead of read again from database (for performance reasons):
* - _waitingMessages's message count is smaller than a maximum count (_waitingMessages.Count < MaxMessagesInQueue).
* - All messages in database is also in _waitingMessages (_biggestWaitingMessageIdInList >= _biggestWaitingMessageId)
* That means there is no message that is in database but not in _waitingMessages list.
*/
if (_waitingMessages.Count < MaxMessagesInQueue &&
_biggestWaitingMessageIdInList >= _biggestWaitingMessageId)
{
//Add message to queue.
_waitingMessages.AddLast(new WaitingMessage(messageRecord));
//This message's Id is new biggest id on queue.
_biggestWaitingMessageIdInList = messageRecord.Id;
}
//This message's id is new biggest id in database, so update _biggestWaitingMessageId value
_biggestWaitingMessageId = messageRecord.Id;
}
else
{
//Add message to queue.
_waitingMessages.AddFirst(new WaitingMessage(messageRecord));
}
//Pulse waiting thread that is in wait state because of no message to process.
if (!_waitingForAnError)
{
Monitor.PulseAll(_waitingMessages);
}
Logger.Debug("EnqueueMessage - WaitingMessages.Count = " + _waitingMessages.Count + ", Application = " + Name);
}
}
public int StoreMessage(MDSMessageRecord messageRecord)
{
var startTime = DateTime.Now;
Exception lastException = null;
while (DateTime.Now.Subtract(startTime).TotalMilliseconds < TimeOut)
{
try
{
return _storageManager.StoreMessage(messageRecord);
}
catch (Exception ex)
{
Logger.Warn(ex.Message, ex);
lastException = ex;
Thread.Sleep(WaitTimeBeforeRetry);
RestartStorageManager();
}
}
throw new MDSDatabaseException("Can not performed a database operation.", lastException);
}
