/// <summary>
/// Converts <see cref="Microsoft.Extensions.Logging.LogLevel" /> to <see cref="NLog.LogLevel" />.
/// </summary>
/// <param name="logLevel">Log level value to convert.</param>
/// <returns>NLog value of the log level.</returns>
public static LogLevel ToNLogLevel(this Microsoft.Extensions.Logging.LogLevel logLevel)
{
LogLevel res = LogLevel.Trace;
switch (logLevel)
{
case Microsoft.Extensions.Logging.LogLevel.Trace:
res = LogLevel.Trace;
break;
case Microsoft.Extensions.Logging.LogLevel.Debug:
res = LogLevel.Debug;
break;
case Microsoft.Extensions.Logging.LogLevel.Information:
res = LogLevel.Info;
break;
case Microsoft.Extensions.Logging.LogLevel.Warning:
res = LogLevel.Warn;
break;
case Microsoft.Extensions.Logging.LogLevel.Error:
res = LogLevel.Error;
break;
case Microsoft.Extensions.Logging.LogLevel.Critical:
res = LogLevel.Fatal;
break;
}
return(res);
}
/// <summary>
/// Convert loglevel to NLog variant.
/// </summary>
/// <param name="logLevel">level to be converted.</param>
/// <returns></returns>
private static LogLevel ConvertLogLevel(Microsoft.Extensions.Logging.LogLevel logLevel)
{
switch (logLevel)
{
case Microsoft.Extensions.Logging.LogLevel.Trace:
return(LogLevel.Trace);
case Microsoft.Extensions.Logging.LogLevel.Debug:
return(LogLevel.Debug);
case Microsoft.Extensions.Logging.LogLevel.Information:
return(LogLevel.Info);
case Microsoft.Extensions.Logging.LogLevel.Warning:
return(LogLevel.Warn);
case Microsoft.Extensions.Logging.LogLevel.Error:
return(LogLevel.Error);
case Microsoft.Extensions.Logging.LogLevel.Critical:
return(LogLevel.Fatal);
case Microsoft.Extensions.Logging.LogLevel.None:
return(LogLevel.Off);
default:
return(LogLevel.Debug);
}
}
public void Log <TState>(Microsoft.Extensions.Logging.LogLevel logLevel, EventId eventId, TState state, Exception exception, Func <TState, Exception, string> formatter)
{
var nLogLogLevel = ConvertLogLevel(logLevel);
if (!_logger.IsEnabled(nLogLogLevel))
{
return;
}
if (formatter == null)
{
throw new ArgumentNullException(nameof(formatter));
}
var eventInfo = CreateLogEventInfo(nLogLogLevel, state, exception, formatter);
CaptureEventId(eventInfo, eventId);
if (exception != null)
{
eventInfo.Exception = exception;
}
_logger.Log(typeof(Microsoft.Extensions.Logging.ILogger), eventInfo);
}
//todo callsite showing the framework logging classes/methods
public void Log <TState>(Microsoft.Extensions.Logging.LogLevel logLevel, EventId eventId, TState state, Exception exception, Func <TState, Exception, string> formatter)
{
var nLogLogLevel = ConvertLogLevel(logLevel);
if (IsEnabled(nLogLogLevel))
{
if (formatter == null)
{
throw new ArgumentNullException(nameof(formatter));
}
var message = formatter(state, exception);
if (!string.IsNullOrEmpty(message))
{
//message arguments are not needed as it is already checked that the loglevel is enabled.
var eventInfo = LogEventInfo.Create(nLogLogLevel, _logger.Name, message);
eventInfo.Exception = exception;
eventInfo.Properties["EventId" + _options.EventIdSeparator + "Id"] = eventId.Id;
eventInfo.Properties["EventId" + _options.EventIdSeparator + "Name"] = eventId.Name;
eventInfo.Properties["EventId"] = eventId;
_logger.Log(eventInfo);
}
}
}
/// <summary>
/// Is logging enabled for this logger at this <paramref name="logLevel"/>?
/// </summary>
/// <param name="logLevel"></param>
/// <returns></returns>
public bool IsEnabled(Microsoft.Extensions.Logging.LogLevel logLevel)
{
var convertLogLevel = ConvertLogLevel(logLevel);
return(IsEnabled(convertLogLevel));
}
