public bool MS_InsertMessage(DatabaseMessage message)
{
int recordsAffected = 0;
using (SqlConnection connection = new SqlConnection(Settings.DatabaseSettings.ConnectionString))
using (SqlCommand command = connection.CreateCommand())
{
command.CommandType = CommandType.Text;
command.CommandText = IncomingQueueInsertScript;
command.CommandTimeout = 60; // seconds
command.Parameters.AddWithValue("Идентификатор", message.Uuid);
command.Parameters.AddWithValue("ДатаВремя", message.DateTimeStamp);
command.Parameters.AddWithValue("Отправитель", message.Sender);
command.Parameters.AddWithValue("ТипОперации", message.OperationType);
command.Parameters.AddWithValue("ТипСообщения", message.MessageType);
command.Parameters.AddWithValue("ТелоСообщения", message.MessageBody);
command.Parameters.AddWithValue("КоличествоОшибок", message.ErrorCount);
command.Parameters.AddWithValue("ОписаниеОшибки", message.ErrorDescription);
connection.Open();
recordsAffected = command.ExecuteNonQuery();
}
return(recordsAffected != 0);
}
public bool InsertMessage(DatabaseMessage message)
{
// TODO: use try-catch statement and handle exceptions thrown from using statements in this method !?
if (Settings.DatabaseSettings.DatabaseProvider == DatabaseProviders.SQLServer)
{
return(SQLServer_InsertMessage(message));
}
return(PostgreSQL_InsertMessage(message));
}
private void ProcessMessage(object sender, BasicDeliverEventArgs args)
{
if (!(sender is EventingBasicConsumer consumer))
{
return;
}
if (!ConsumerTags.TryGetValue(args.ConsumerTag, out string exchange))
{
UnsubscribeConsumer(consumer, args.ConsumerTag);
return;
}
JsonDataTransferMessage dataTransferMessage = null;
try
{
byte[] body = args.Body.ToArray();
string messageBody = Encoding.UTF8.GetString(body);
dataTransferMessage = JsonSerializer.Deserialize <JsonDataTransferMessage>(messageBody);
}
catch (Exception error)
{
FileLogger.Log(LOG_TOKEN, ExceptionHelper.GetErrorText(error));
}
if (dataTransferMessage == null)
{
RemovePoisonMessage(exchange, consumer, args.DeliveryTag);
return;
}
bool success = true;
IDatabaseMessageProducer producer = Services.GetService <IDatabaseMessageProducer>();
try
{
DatabaseMessage message = producer.ProduceMessage(dataTransferMessage);
success = producer.InsertMessage(message);
if (success)
{
consumer.Model.BasicAck(args.DeliveryTag, false);
}
}
catch (Exception error)
{
success = false;
FileLogger.Log(LOG_TOKEN, ExceptionHelper.GetErrorText(error));
}
if (!success)
{
ResetConsumer(args.ConsumerTag); // return unacked messages back to queue in the same order (!)
FileLogger.Log(LOG_TOKEN, "Failed to process message. Consumer for exchange \"" + exchange + "\" has been reset.");
}
}
public DatabaseMessage ProduceMessage(JsonDataTransferMessage message)
{
DatabaseMessage dbm = new DatabaseMessage();
dbm.Sender = message.Sender;
if (message.Objects.Count > 0)
{
dbm.MessageType = message.Objects[0].Type;
dbm.MessageBody = message.Objects[0].Body;
dbm.OperationType = message.Objects[0].Operation;
}
return(dbm);
}
public bool InsertMessage(DatabaseMessage message)
{
if (Settings.DatabaseSettings.DatabaseProvider == DatabaseProvider.SQLServer)
{
try
{
return(MS_InsertMessage(message));
}
catch (Exception error)
{
FileLogger.Log(LOG_TOKEN, ExceptionHelper.GetErrorText(error));
return(false);
}
}
return(PG_InsertMessage(message));
}
public DatabaseMessage ProduceMessage(JsonDataTransferMessage message)
{
DatabaseMessage dbm = new DatabaseMessage()
{
Sender = message.Sender,
DateTimeStamp = DateTime.Now.AddYears(YearOffset)
};
if (message.Objects.Count > 0)
{
dbm.MessageType = message.Objects[0].Type;
dbm.MessageBody = message.Objects[0].Body;
dbm.OperationType = message.Objects[0].Operation;
}
return(dbm);
}
public bool PG_InsertMessage(DatabaseMessage message)
{
int recordsAffected = 0;
{
NpgsqlConnection connection = new NpgsqlConnection(Settings.DatabaseSettings.ConnectionString);
NpgsqlCommand command = connection.CreateCommand();
command.CommandType = CommandType.Text;
command.CommandText = IncomingQueueInsertScript;
command.CommandTimeout = 60; // seconds
command.Parameters.AddWithValue("Идентификатор", message.Uuid.ToByteArray());
command.Parameters.AddWithValue("ДатаВремя", message.DateTimeStamp);
command.Parameters.AddWithValue("Отправитель", message.Sender);
command.Parameters.AddWithValue("ТипОперации", message.OperationType);
command.Parameters.AddWithValue("ТипСообщения", message.MessageType);
command.Parameters.AddWithValue("ТелоСообщения", message.MessageBody);
command.Parameters.AddWithValue("КоличествоОшибок", message.ErrorCount);
command.Parameters.AddWithValue("ОписаниеОшибки", message.ErrorDescription);
try
{
connection.Open();
recordsAffected = command.ExecuteNonQuery();
}
catch (Exception error)
{
// FIXME: replace with using statement and handle exceptions outside the method !?
FileLogger.Log(LOG_TOKEN, ExceptionHelper.GetErrorText(error));
}
finally
{
DisposeDatabaseResources(connection, null, command);
}
}
return(recordsAffected != 0);
}
public bool SQLServer_InsertMessage(DatabaseMessage message)
{
int recordsAffected = 0;
{
SqlConnection connection = new SqlConnection(Settings.DatabaseSettings.ConnectionString);
SqlCommand command = connection.CreateCommand();
command.CommandType = CommandType.Text;
command.CommandText = SQLServer_InsertMessageScript();
command.CommandTimeout = 60; // seconds
command.Parameters.AddWithValue("p1", message.Code);
command.Parameters.AddWithValue("p2", message.Uuid);
command.Parameters.AddWithValue("p3", message.DateTimeStamp);
command.Parameters.AddWithValue("p4", message.Sender);
command.Parameters.AddWithValue("p5", message.OperationType);
command.Parameters.AddWithValue("p6", message.MessageType);
command.Parameters.AddWithValue("p7", message.MessageBody);
command.Parameters.AddWithValue("p8", message.ErrorCount);
command.Parameters.AddWithValue("p9", message.ErrorDescription);
try
{
connection.Open();
recordsAffected = command.ExecuteNonQuery();
}
catch (Exception error)
{
FileLogger.Log(LOG_TOKEN, ExceptionHelper.GetErrorText(error));
}
finally
{
// TODO: replace with using statement and handle exceptions outside the method !?
DisposeDatabaseResources(connection, null, command);
}
}
return(recordsAffected != 0);
}
private void ProcessMessage(object sender, BasicDeliverEventArgs args)
{
if (!(sender is EventingBasicConsumer consumer))
{
return;
}
if (!ConsumerTags.TryGetValue(args.ConsumerTag, out string exchange))
{
//TODO: review commented code
//UnsubscribeConsumer(consumer, args.ConsumerTag);
//return;
if (!string.IsNullOrWhiteSpace(args.Exchange))
{
exchange = args.Exchange;
}
else if (!string.IsNullOrWhiteSpace(args.RoutingKey))
{
exchange = args.RoutingKey;
}
else
{
exchange = "unknown";
}
}
JsonDataTransferMessage dataTransferMessage = GetJsonDataTransferMessage(args);
if (dataTransferMessage == null)
{
RemovePoisonMessage(exchange, consumer, args.DeliveryTag);
return;
}
bool success = true;
IDatabaseMessageProducer producer = Services.GetService <IDatabaseMessageProducer>();
try
{
DatabaseMessage message = producer.ProduceMessage(dataTransferMessage);
success = producer.InsertMessage(message);
if (success)
{
consumer.Model.BasicAck(args.DeliveryTag, false);
}
}
catch (Exception error)
{
success = false;
FileLogger.Log(LOG_TOKEN, ExceptionHelper.GetErrorText(error));
}
if (!success)
{
// return unacked messages back to queue in the same order (!)
ResetConsumer(args.ConsumerTag);
FileLogger.Log(LOG_TOKEN,
"Failed to process message. Consumer (tag = " + args.ConsumerTag.ToString()
+ ") for exchange \"" + exchange + "\" has been reset.");
}
}
