public void Run()
{
_rmqConnection = SuperLoggerHelper.GetRmqConnection();
_rmqChannel = _rmqConnection.CreateModel();
_rmqChannel.QueueDeclare(SuperLoggerHelper.QueueName, true, false, false, null);
//@todo: QueueingBasicConsumer is obsolete and impacts the performance. It has to be replaced
QueueingBasicConsumer rmqConsumer = new QueueingBasicConsumer();
_rmqChannel.BasicConsume(SuperLoggerHelper.QueueName, false, rmqConsumer);
while (Running)
{
//@todo: Catch exception from RMQ and reconnect
//@todo: Add mechanism to deal with bad messages and put the service to sleep in case of RMQ or SQL failures
BasicDeliverEventArgs message = rmqConsumer.Queue.Dequeue();
try
{
var body = message.Body;
var payload = Encoding.UTF8.GetString(body);
RmqMessageContent messageContent = JsonConvert.DeserializeObject <RmqMessageContent>(payload);
SuperLoggerDbModel dbModel = new SuperLoggerDbModel();
dbModel.AddLogEntry(messageContent.Source,
messageContent.LogType,
messageContent.CorrelationID,
JsonConvert.DeserializeObject <DateTime>(messageContent.CreatedOn),
messageContent.Message,
messageContent.StackTrace,
messageContent.Data);
_rmqChannel.BasicAck(message.DeliveryTag, false);
} catch (Exception ex)
{
_rmqChannel.BasicReject(message.DeliveryTag, true);
}
}
}
private static RmqMessageContent PrepareMessageContent(string type, string source, string message, string stackTrace, IDictionary <string, string> data)
{
RmqMessageContent messageContent = new RmqMessageContent();
messageContent.LogType = type;
messageContent.Source = source;
messageContent.Message = message;
messageContent.StackTrace = stackTrace;
messageContent.Data = data;
messageContent.CreatedOn = JsonConvert.SerializeObject(DateTime.Now.ToUniversalTime());
messageContent.CorrelationID = CorrelationID;
return(messageContent);
}
private static void SendMessage(string type,
string source,
string message,
string stackTrace,
IDictionary <string, string> data,
bool throwExceptions)
{
IConnection rmqConn = null;
IModel rmqModel = null;
try
{
rmqConn = SuperLoggerHelper.GetRmqConnection();
rmqModel = rmqConn.CreateModel();
// @todo: review this
// This is unecessary and may impact performance. It will require pre rabbit mq configuration to create the Ex
// Better to move this to a initialization area
//rmqModel.ExchangeDeclare(SuperLoggerHelper.Exchange, ExchangeType.Direct);
//rmqModel.QueueDeclare(SuperLoggerHelper.QueueName, true, false, false, null);
//rmqModel.QueueBind(SuperLoggerHelper.QueueName, SuperLoggerHelper.Exchange, SuperLoggerHelper.RoutingKey, null);
RmqMessageContent messageContent = PrepareMessageContent(type, source, message, stackTrace, data);
string messageBody = JsonConvert.SerializeObject(messageContent);
byte[] messageBodyBytes = System.Text.Encoding.UTF8.GetBytes(messageBody);
rmqModel.BasicPublish(SuperLoggerHelper.Exchange, SuperLoggerHelper.RoutingKey, null, messageBodyBytes);
}
catch (Exception ex)
{
if (throwExceptions)
{
throw;
}
// @todo: Add the exception to Event Viewer
//string source = "Super Logger";
//string log = "Application";
//string eventMessage = string.Format("Error: {0} \nStack Trace: {1}", ex.Message, ex.StackTrace);
//// @todo: This requires admin privilege. Check how to make it always work
//if (!EventLog.SourceExists(source))
// EventLog.CreateEventSource(source, log);
//EventLog.WriteEntry(source, eventMessage, EventLogEntryType.Error);
}
finally
{
CloseRmqConnection(rmqConn);
}
}
