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using MediaBrowser.Model.Logging;
using System;
using System.Text;
namespace MediaBrowser.Common.Implementations.Logging
{
/// <summary>
/// Class NLogger
/// </summary>
public class NLogger : ILogger
{
/// <summary>
/// The _logger
/// </summary>
private readonly NLog.Logger _logger;
private readonly ILogManager _logManager;
/// <summary>
/// The _lock object
/// </summary>
private static readonly object LockObject = new object();
/// <summary>
/// Initializes a new instance of the <see cref="NLogger" /> class.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="logManager">The log manager.</param>
public NLogger(string name, ILogManager logManager)
{
_logManager = logManager;
lock (LockObject)
{
_logger = NLog.LogManager.GetLogger(name);
}
}
/// <summary>
/// Infoes the specified message.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="paramList">The param list.</param>
public void Info(string message, params object[] paramList)
{
_logger.Info(message, paramList);
}
/// <summary>
/// Errors the specified message.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="paramList">The param list.</param>
public void Error(string message, params object[] paramList)
{
_logger.Error(message, paramList);
}
/// <summary>
/// Warns the specified message.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="paramList">The param list.</param>
public void Warn(string message, params object[] paramList)
{
_logger.Warn(message, paramList);
}
/// <summary>
/// Debugs the specified message.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="paramList">The param list.</param>
public void Debug(string message, params object[] paramList)
{
if (_logManager.LogSeverity == LogSeverity.Info)
{
return;
}
_logger.Debug(message, paramList);
}
/// <summary>
/// Logs the exception.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="exception">The exception.</param>
/// <param name="paramList">The param list.</param>
/// <exception cref="System.NotImplementedException"></exception>
public void ErrorException(string message, Exception exception, params object[] paramList)
{
LogException(LogSeverity.Error, message, exception, paramList);
}
/// <summary>
/// Logs the exception.
/// </summary>
/// <param name="level">The level.</param>
/// <param name="message">The message.</param>
/// <param name="exception">The exception.</param>
/// <param name="paramList">The param list.</param>
private void LogException(LogSeverity level, string message, Exception exception, params object[] paramList)
{
message = FormatMessage(message, paramList).Replace(Environment.NewLine, ". ");
var messageText = LogHelper.GetLogMessage(exception);
var prefix = _logManager.ExceptionMessagePrefix;
if (!string.IsNullOrWhiteSpace(prefix))
{
messageText.Insert(0, prefix);
}
LogMultiline(message, level, messageText);
}
/// <summary>
/// Formats the message.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="paramList">The param list.</param>
/// <returns>System.String.</returns>
private static string FormatMessage(string message, params object[] paramList)
{
if (paramList != null)
{
for (var i = 0; i < paramList.Length; i++)
{
message = message.Replace("{" + i + "}", paramList[i].ToString());
}
}
return message;
}
/// <summary>
/// Logs the multiline.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="severity">The severity.</param>
/// <param name="additionalContent">Content of the additional.</param>
public void LogMultiline(string message, LogSeverity severity, StringBuilder additionalContent)
{
if (severity == LogSeverity.Debug && _logManager.LogSeverity == LogSeverity.Info)
{
return;
}
additionalContent.Insert(0, message + Environment.NewLine);
const char tabChar = '\t';
var text = additionalContent.ToString()
.Replace(Environment.NewLine, Environment.NewLine + tabChar)
.TrimEnd(tabChar);
if (text.EndsWith(Environment.NewLine))
{
text = text.Substring(0, text.LastIndexOf(Environment.NewLine, StringComparison.OrdinalIgnoreCase));
}
_logger.Log(GetLogLevel(severity), text);
}
/// <summary>
/// Gets the log level.
/// </summary>
/// <param name="severity">The severity.</param>
/// <returns>NLog.LogLevel.</returns>
private NLog.LogLevel GetLogLevel(LogSeverity severity)
{
switch (severity)
{
case LogSeverity.Debug:
return NLog.LogLevel.Debug;
case LogSeverity.Error:
return NLog.LogLevel.Error;
case LogSeverity.Warn:
return NLog.LogLevel.Warn;
case LogSeverity.Fatal:
return NLog.LogLevel.Fatal;
case LogSeverity.Info:
return NLog.LogLevel.Info;
default:
throw new ArgumentException("Unknown LogSeverity: " + severity.ToString());
}
}
/// <summary>
/// Logs the specified severity.
/// </summary>
/// <param name="severity">The severity.</param>
/// <param name="message">The message.</param>
/// <param name="paramList">The param list.</param>
public void Log(LogSeverity severity, string message, params object[] paramList)
{
_logger.Log(GetLogLevel(severity), message, paramList);
}
/// <summary>
/// Fatals the specified message.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="paramList">The param list.</param>
public void Fatal(string message, params object[] paramList)
{
_logger.Fatal(message, paramList);
}
/// <summary>
/// Fatals the exception.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="exception">The exception.</param>
/// <param name="paramList">The param list.</param>
public void FatalException(string message, Exception exception, params object[] paramList)
{
LogException(LogSeverity.Fatal, message, exception, paramList);
}
}
}
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