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MailDemonLog.cs
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MailDemonLog.cs
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#region Imports
using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Text;
using NLog;
using NLog.Config;
#endregion Imports
namespace MailDemon
{
/// <summary>
/// Log levels
/// </summary>
public enum LogLevel
{
/// <summary>
/// Trace / Diagnostic
/// </summary>
Trace,
/// <summary>
/// Trace / Diagnostic
/// </summary>
Diagnostic = Trace,
/// <summary>
/// Debug
/// </summary>
Debug,
/// <summary>
/// Information / Info
/// </summary>
Information,
/// <summary>
/// Information / Info
/// </summary>
Info = Information,
/// <summary>
/// Warning / Warn
/// </summary>
Warning,
/// <summary>
/// Warning / Warn
/// </summary>
Warn = Warning,
/// <summary>
/// Error / Exception
/// </summary>
Error,
/// <summary>
/// Error / Exception
/// </summary>
Exception = Error,
/// <summary>
/// Critical / Fatal
/// </summary>
Critical,
/// <summary>
/// Critical / Fatal
/// </summary>
Fatal = Critical,
/// <summary>
/// Off / None
/// </summary>
Off,
/// <summary>
/// Off / None
/// </summary>
None = Off
}
/// <summary>
/// Mail Demon logger. Will never throw exceptions.
/// Currently the Mail Demon logger uses NLog internally, so make sure it is setup in your app.config file or nlog.config file.
/// </summary>
public static class MailDemonLog
{
private static readonly Logger logger;
static MailDemonLog()
{
try
{
LogFactory factory = null;
try
{
factory = LogManager.LoadConfiguration(ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None).FilePath);
}
catch
{
// if no config, exception is thrown that is OK
}
if (factory == null || factory.Configuration.AllTargets.Count == 0)
{
string nlogConfigPath = Path.Combine(Directory.GetCurrentDirectory(), "nlog.config");
if (!File.Exists(nlogConfigPath))
{
Console.WriteLine("Creating default nlog.config file");
// storing this as a resource fails to use correct string in precompiled .exe with .net core, bug with Microsoft I think
File.WriteAllText(nlogConfigPath, @"<?xml version=""1.0""?>
<nlog xmlns=""http://www.nlog-project.org/schemas/NLog.xsd"" xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" throwExceptions=""false"" internalLogToConsole=""false"" internalLogToConsoleError=""false"" internalLogLevel=""Trace"">
<targets>
<target name=""logfile"" xsi:type=""File"" fileName=""${basedir}/logfile.txt"" archiveNumbering=""Sequence"" archiveEvery=""Day"" maxArchiveFiles=""28"" encoding=""UTF-8""/>
<target name=""console"" xsi:type=""Console""/>
</targets>
<rules>
<logger name=""*"" minlevel=""Warn"" writeTo=""logfile""/>
<logger name=""*"" minlevel=""Warn"" writeTo=""console""/>
</rules>
</nlog>");
}
if (File.Exists(nlogConfigPath))
{
factory = LogManager.LoadConfiguration(nlogConfigPath);
}
else
{
throw new IOException("Unable to create nlog configuration file, nlog.config file failed to write default config.");
}
}
logger = factory.GetCurrentClassLogger();
}
catch (Exception ex)
{
// log to console as no other logger is available
Console.WriteLine("Failed to initialize logger: {0}", ex);
}
}
/// <summary>
/// Log current log levels
/// </summary>
public static void WriteLogLevels(MailDemon.LogLevel level = LogLevel.Warn)
{
if (logger != null)
{
MailDemonLog.Write(level, "Log levels: {0},{1},{2},{3},{4},{5}", logger.IsFatalEnabled, logger.IsErrorEnabled, logger.IsWarnEnabled, logger.IsInfoEnabled, logger.IsDebugEnabled, logger.IsTraceEnabled);
}
}
/// <summary>
/// Map IPBan log level to NLog log level
/// </summary>
/// <param name="logLevel">IPBan log level</param>
/// <returns>NLog log level</returns>
public static NLog.LogLevel GetNLogLevel(MailDemon.LogLevel logLevel)
{
switch (logLevel)
{
case MailDemon.LogLevel.Critical: return NLog.LogLevel.Fatal;
case MailDemon.LogLevel.Debug: return NLog.LogLevel.Debug;
case MailDemon.LogLevel.Error: return NLog.LogLevel.Error;
case MailDemon.LogLevel.Information: return NLog.LogLevel.Info;
case MailDemon.LogLevel.Trace: return NLog.LogLevel.Trace;
case MailDemon.LogLevel.Warning: return NLog.LogLevel.Warn;
default: return NLog.LogLevel.Off;
}
}
/// <summary>
/// Map Microsoft log level to NLog log level
/// </summary>
/// <param name="logLevel">Microsoft log level</param>
/// <returns>NLog log level</returns>
public static NLog.LogLevel GetNLogLevel(Microsoft.Extensions.Logging.LogLevel logLevel)
{
switch (logLevel)
{
case Microsoft.Extensions.Logging.LogLevel.Critical: return NLog.LogLevel.Fatal;
case Microsoft.Extensions.Logging.LogLevel.Debug: return NLog.LogLevel.Debug;
case Microsoft.Extensions.Logging.LogLevel.Error: return NLog.LogLevel.Error;
case Microsoft.Extensions.Logging.LogLevel.Information: return NLog.LogLevel.Info;
case Microsoft.Extensions.Logging.LogLevel.Trace: return NLog.LogLevel.Trace;
case Microsoft.Extensions.Logging.LogLevel.Warning: return NLog.LogLevel.Warn;
default: return NLog.LogLevel.Off;
}
}
/// <summary>
/// Log a fatal
/// </summary>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Fatal(string text, params object[] args)
{
Write(LogLevel.Fatal, text, args);
}
/// <summary>
/// Log a fatal
/// </summary>
/// <param name="ex">Error</param>
public static void Fatal(Exception ex)
{
Write(LogLevel.Fatal, "Exception: " + ex.ToString());
}
/// <summary>
/// Log a fatal
/// </summary>
/// <param name="text">Text</param>
/// <param name="ex">Error</param>
public static void Fatal(string text, Exception ex)
{
Write(LogLevel.Fatal, text + ": " + ex.ToString());
}
/// <summary>
/// Log a fatal
/// </summary>
/// <param name="ex">Error</param>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Fatal(Exception ex, string text, params object[] args)
{
Write(LogLevel.Fatal, string.Format(text, args) + ": " + ex.ToString());
}
/// <summary>
/// Log a critical
/// </summary>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Critical(string text, params object[] args)
{
Write(LogLevel.Critical, text, args);
}
/// <summary>
/// Log a critical
/// </summary>
/// <param name="ex">Error</param>
public static void Critical(Exception ex)
{
Write(LogLevel.Critical, "Exception: " + ex.ToString());
}
/// <summary>
/// Log a critical
/// </summary>
/// <param name="text">Text</param>
/// <param name="ex">Error</param>
public static void Critical(string text, Exception ex)
{
Write(LogLevel.Critical, text + ": " + ex.ToString());
}
/// <summary>
/// Log a critical
/// </summary>
/// <param name="ex">Error</param>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Critical(Exception ex, string text, params object[] args)
{
Write(LogLevel.Critical, string.Format(text, args) + ": " + ex.ToString());
}
/// <summary>
/// Log an error
/// </summary>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Error(string text, params object[] args)
{
Write(LogLevel.Error, text, args);
}
/// <summary>
/// Log an error
/// </summary>
/// <param name="ex">Error</param>
public static void Error(Exception ex)
{
Write(LogLevel.Error, "Exception: " + ex.ToString());
}
/// <summary>
/// Log an error
/// </summary>
/// <param name="text">Text</param>
/// <param name="ex">Error</param>
public static void Error(string text, Exception ex)
{
Write(LogLevel.Error, text + ": " + ex.ToString());
}
/// <summary>
/// Log an error
/// </summary>
/// <param name="ex">Error</param>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Error(Exception ex, string text, params object[] args)
{
Write(LogLevel.Error, string.Format(text, args) + ": " + ex.ToString());
}
/// <summary>
/// Log a warn
/// </summary>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Warn(string text, params object[] args)
{
Write(LogLevel.Warn, text, args);
}
/// <summary>
/// Log an info
/// </summary>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Info(string text, params object[] args)
{
Write(LogLevel.Info, text, args);
}
/// <summary>
/// Log a debug
/// </summary>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Debug(string text, params object[] args)
{
Write(LogLevel.Debug, text, args);
}
/// <summary>
/// Log a trace
/// </summary>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
public static void Trace(string text, params object[] args)
{
Write(LogLevel.Trace, text, args);
}
/// <summary>
/// Write to the log
/// </summary>
/// <param name="level">Log level</param>
/// <param name="text">Text with format</param>
/// <param name="args">Format args</param>
private static void Write(MailDemon.LogLevel level, string text, params object[] args)
{
try
{
if (logger == null)
{
throw new ArgumentNullException(nameof(logger));
}
logger?.Log(GetNLogLevel(level), text, args);
}
catch
{
Console.WriteLine("{0}: {1}", level, string.Format(text, args));
}
}
/// <summary>
/// Internal access to the logger
/// </summary>
public static Logger Logger { get { return logger; } }
}
}