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skidoodle 2024-03-13 00:33:46 +01:00
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Framework/Logging/DatabaseLogWriter.cs Normal file
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using System;
namespace Kreta.Framework.Logging
{
/// <summary>
/// Adatbázis naplóvezető osztály.
/// </summary>
public sealed class DatabaseLogWriter : LogWriterBase
{
private string m_ConnectionString;
private string m_ServerName;
private const string insertCommandText = @"
INSERT INTO T_LOG (C_TIMESTAMP, C_SERVER, C_EVENTTYPEID, C_LEVELID, C_SESSIONID, C_DETAILS, C_GENERATEDID, SERIAL)
VALUES (GETDATE(), :pSERVER, :pEVENTTYPE, :pLEVEL, :pSESSIONID, :pDETAILS, :pGENERATEDID, 0)";
private const string insertCommandTextWithIntezmeny = @"
INSERT INTO T_LOG (C_TIMESTAMP, C_SERVER, C_EVENTTYPEID, C_LEVELID, C_SESSIONID, C_DETAILS, C_GENERATEDID, C_INTEZMENYID, C_TANEVID, SERIAL)
VALUES (GETDATE(), :pSERVER, :pEVENTTYPE, :pLEVEL, :pSESSIONID, :pDETAILS, :pGENERATEDID, :pINTEZMENYID, :pTANEVID, 0)";
/// <summary>
/// Az osztály konstruktora.
/// </summary>
/// <param name="connectionString">Az adatbázis kapcsolatot leíró karakterlánc</param>
/// <param name="serverName">A naplózót használó kiszolgáló neve</param>
public DatabaseLogWriter(string connectionString, string serverName)
{
if (string.IsNullOrWhiteSpace(connectionString))
{
throw new ArgumentNullException(nameof(connectionString));
}
if (string.IsNullOrWhiteSpace(serverName))
{
throw new ArgumentNullException(nameof(serverName));
}
m_ConnectionString = connectionString;
m_ServerName = serverName;
}
private string ConnectionString
{
get
{
return m_ConnectionString;
}
}
/// <summary>
/// Naplóba vezeti az üzenetet.
/// </summary>
/// <param name="message">A naplóba vezetendő üzenet</param>
protected override Guid? DoLog(ILogMessage message)
{
var logId = Guid.NewGuid();
DbLog(message, logId);
return logId;
}
protected override void DoLog(ILogMessage message, Guid logId)
{
DbLog(message, logId);
}
private bool ActivateContext()
{
if (UserContext.Instance == null || !UserContext.Instance.Activated)
{
SDAServer.Instance.SessionManager.ActivateSystemSession();
return true;
}
return false;
}
private void DbLog(ILogMessage message, Guid logId)
{
if (message.Level < LogLevel.INFO)
{
// DEBUG-ot nem tolunk le adatbázisba!
return;
}
var sessionActivated = ActivateContext();
try
{
int? intezmenyId = null;
int? tanevId = null;
var commandText = insertCommandText;
if (UserContext.Instance != null && UserContext.Instance.IntezmenyId > 0)
{
commandText = insertCommandTextWithIntezmeny;
intezmenyId = UserContext.Instance.IntezmenyId;
if (UserContext.Instance.AktivTanevId > 0)
{
tanevId = UserContext.Instance.AktivTanevId;
}
}
using (SDA.DataProvider.SDAConnection connection = new SDA.DataProvider.SDAConnection(ConnectionString))
{
using (SDA.DataProvider.SDACommand command = connection.CreateCommand())
{
command.CommandText = commandText;
if (intezmenyId.HasValue)
{
command.Parameters.Add("pINTEZMENYID", intezmenyId.Value);
if (tanevId.HasValue)
{
command.Parameters.Add("pTANEVID", tanevId.Value);
}
else
{
command.Parameters.Add("pTANEVID", DBNull.Value);
}
}
command.Parameters.Add("pSERVER", SDA.DataProvider.SDADBType.String, 36).Value = m_ServerName;
command.Parameters.Add("pEVENTTYPE", SDA.DataProvider.SDADBType.Int, 9).Value = message.EventType;
command.Parameters.Add("pLEVEL", SDA.DataProvider.SDADBType.Int, 9).Value = message.Level;
command.Parameters.Add("pGENERATEDID", logId);
command.Parameters.Add("pSESSIONID", SDA.DataProvider.SDADBType.String, 36).Value = message.SessionId == null ? DBNull.Value : (object)message.SessionId;
string details = LogUtil.FormatMessageDetails(message, "\r\n");
if (string.IsNullOrWhiteSpace(details))
{
command.Parameters.Add("pDETAILS", SDA.DataProvider.SDADBType.LongString).Value = DBNull.Value;
}
else
{
command.Parameters.Add("pDETAILS", SDA.DataProvider.SDADBType.LongString).Value = details;
}
connection.Open();
command.ExecuteNonQuery();
}
}
}
catch (SDA.DataProvider.SDADataProviderException exception)
{
if (exception.Error == SDA.DataProvider.SDADataProviderError.CommunicationError)
{
return;
}
if (exception.Error == SDA.DataProvider.SDADataProviderError.UniqueKeyViolation)
{
// ezt a kivételt nyugodtan lenyelhetjük
return;
}
throw;
}
finally
{
if (sessionActivated)
{
if (UserContext.Instance != null && UserContext.Instance.Activated)
{
SDAServer.Instance.SessionManager.DeactivateSystemSession();
}
}
}
}
}
}