#region Apache Notice
/*****************************************************************************
* $Header: $
* $Revision: 474141 $
* $Date: 2006-11-13 05:43:37 +0100 (lun., 13 nov. 2006) $
*
* iBATIS.NET Data Mapper
* Copyright (C) 2004 - Gilles Bayon
*
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
********************************************************************************/
#endregion
using System;
using System.Diagnostics;
using System.Globalization;
using System.Text;
namespace IBatisNet.Common.Logging.Impl{
/// <summary>
/// Logger that sends output to the <see cref="System.Diagnostics.Trace" /> sub-system.
/// </summary>
public class TraceLogger: AbstractLogger
{
private bool _showDateTime = false;
private bool _showLogName = false;
private string _logName = string.Empty;
private LogLevel _currentLogLevel = LogLevel.All;
private string _dateTimeFormat = string.Empty;
private bool _hasDateTimeFormat = false;
/// <summary>
/// Creates a new instance of the TraceLogger.
/// </summary>
/// <param name="logName">The name for this instance (usually the fully qualified class name).</param>
/// <param name="logLevel">
/// The logging threshold. Log messages created with a <see cref="LogLevel" />
/// beneath this threshold will not be logged.
/// </param>
/// <param name="showDateTime">Include the current time in the log message </param>
/// <param name="showLogName">Include the instance name in the log message</param>
/// <param name="dateTimeFormat">The date and time format to use in the log message </param>
public TraceLogger( string logName, LogLevel logLevel
, bool showDateTime, bool showLogName, string dateTimeFormat)
{
_logName = logName;
_currentLogLevel = logLevel;
_showDateTime = showDateTime;
_showLogName = showLogName;
_dateTimeFormat = dateTimeFormat;
if (_dateTimeFormat != null && _dateTimeFormat.Length > 0)
{
_hasDateTimeFormat = true;
}
}
/// <summary>
/// Responsible for assembling and writing the log message to the tracing sub-system.
/// </summary>
/// <param name="level"></param>
/// <param name="message"></param>
/// <param name="e"></param>
protected override void Write( LogLevel level, object message, Exception e )
{
// Use a StringBuilder for better performance
StringBuilder sb = new StringBuilder();
// Append date-time if so configured
if ( _showDateTime )
{
if ( _hasDateTimeFormat )
{
sb.Append( DateTime.Now.ToString( _dateTimeFormat, CultureInfo.InvariantCulture ));
}
else
{
sb.Append( DateTime.Now );
}
sb.Append( " " );
}
// Append a readable representation of the log level
sb.Append( string.Format( "[{0}]", level.ToString().ToUpper() ).PadRight( 8 ) );
// Append the name of the log instance if so configured
if ( _showLogName )
{
sb.Append( _logName ).Append( " - " );
}
// Append the message
sb.Append( message.ToString() );
// Append stack trace if not null
if ( e != null )
{
sb.Append(Environment.NewLine).Append(e.ToString());
}
// Print to the appropriate destination
Trace.WriteLine( sb.ToString() );
}
/// <summary>
/// Is the given log level currently enabled ?
/// </summary>
/// <param name="level"></param>
/// <returns></returns>
protected override bool IsLevelEnabled( LogLevel level )
{
int iLevel = (int)level;
int iCurrentLogLevel = (int)_currentLogLevel;
return ( iLevel >= iCurrentLogLevel );
}
}
}
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