/// <summary>
/// Send log message to message queue.
/// </summary>
protected override void Append(LoggingEvent loggingEvent)
{
string text = RenderLoggingEvent(loggingEvent);
string message = text.Replace("(null)", "");
if (!MessageValidation(message))
{
return;
}
bool QueueFailureCountThresholdReached = (QueueFailureCount >= m_QueueFailureCountThreshold);
bool QueueRestoreTimeThresholdReached;
if (!QueueFailureCountThresholdReached)
{
QueueRestoreTimeThresholdReached = false;
}
else
{
TimeSpan t = System.DateTime.Now - LastQueueFailureTime;
QueueRestoreTimeThresholdReached = t.TotalSeconds > m_QueueRestoreTimeThreshold;
}
if (!QueueFailureCountThresholdReached || QueueRestoreTimeThresholdReached)
{
if (QueueRestoreTimeThresholdReached)
{
// Queue Restore Time Threshold is reached.
// It's time to clear the failure count and direct message to queue.
QueueFailureCount = 0;
log.Debug("Queue Restore Time Threshold (" + m_QueueRestoreTimeThreshold.ToString() + ") reached. Message is directed to queue.");
}
try
{
ConnectionFactory connectionFactory = new ConnectionFactory(m_QueueURI);
NmsTemplate template = new NmsTemplate(connectionFactory);
template.ConvertAndSend(m_QueueName, message);
QueueFailureCount = 0;
}
catch (Exception e)
{
log.Fatal("An error occurred while sending message to queue.", e);
QueueHelper.RecordOriginalMessage(message);
QueueFailureCount++;
LastQueueFailureTime = DateTime.Now;
}
}
else
{
log.Debug("Queue Failure Count Threshold (" + m_QueueFailureCountThreshold.ToString() + ") reached. Message is directed to local file. ");
QueueHelper.RecordOriginalMessage(message);
}
}
/// <summary>
/// Check if message in good XML format.
/// </summary>
protected bool MessageValidation(string message)
{
bool result = true;
XmlDocument doc = new XmlDocument();
try
{
doc.LoadXml(message);
}
catch (Exception e)
{
log.Fatal("Message format error.", e);
QueueHelper.RecordOriginalMessage(message);
result = false;
}
return(result);
}