internal static void Write(Type loggerType, TargetWithFilterChain targets, LogEventInfo logEvent, LogFactory factory)
{
if (targets == null)
{
return;
}
#if !NET_CF
var stu = targets.GetStackTraceUsage();
if (stu != StackTraceUsage.None && !logEvent.HasStackTrace)
{
StackTrace stackTrace;
#if !SILVERLIGHT
stackTrace = new StackTrace(StackTraceSkipMethods, stu == StackTraceUsage.WithSource);
#else
stackTrace = new StackTrace();
#endif
var firstUserFrame = FindCallingMethodOnStackTrace(stackTrace, loggerType);
logEvent.SetStackTrace(stackTrace, firstUserFrame);
}
#endif
var originalThreadId = Thread.CurrentThread.ManagedThreadId;
AsyncContinuation exceptionHandler = ex =>
{
if (ex != null)
{
if (factory.ThrowExceptions && Thread.CurrentThread.ManagedThreadId == originalThreadId)
{
throw new NLogRuntimeException("Exception occurred in NLog", ex);
}
}
};
for (var t = targets; t != null; t = t.NextInChain)
{
if (!WriteToTargetWithFilterChain(t, logEvent, exceptionHandler))
{
break;
}
}
}
private void ProcessLogEventInfo(LogLevel logLevel, string loggerName, [Localizable(false)] string message, object[] arguments, int? eventId)
{
var ev = new LogEventInfo();
ev.LoggerName = (loggerName ?? Name) ?? string.Empty;
#if !NET_CF
if (AutoLoggerName)
{
var stack = new StackTrace();
var userFrameIndex = -1;
MethodBase userMethod = null;
for (var i = 0; i < stack.FrameCount; ++i)
{
var frame = stack.GetFrame(i);
var method = frame.GetMethod();
if (method.DeclaringType == GetType())
{
// skip all methods of this type
continue;
}
if (method.DeclaringType.Assembly == systemAssembly)
{
// skip all methods from System.dll
continue;
}
userFrameIndex = i;
userMethod = method;
break;
}
if (userFrameIndex >= 0)
{
ev.SetStackTrace(stack, userFrameIndex);
if (userMethod.DeclaringType != null)
{
ev.LoggerName = userMethod.DeclaringType.FullName;
}
}
}
#endif
ev.TimeStamp = CurrentTimeGetter.Now;
ev.Message = message;
ev.Parameters = arguments;
ev.Level = forceLogLevel ?? logLevel;
if (eventId.HasValue)
{
ev.Properties.Add("EventID", eventId.Value);
}
var logger = LogManager.GetLogger(ev.LoggerName);
logger.Log(ev);
}
/// <summary>
/// Gets the filter result.
/// </summary>
/// <param name="filterChain">The filter chain.</param>
/// <param name="logEvent">The log event.</param>
/// <returns>The result of the filter.</returns>
private static FilterResult GetFilterResult(IEnumerable<Filter> filterChain, LogEventInfo logEvent)
{
var result = FilterResult.Neutral;
try
{
foreach (var f in filterChain)
{
result = f.GetFilterResult(logEvent);
if (result != FilterResult.Neutral)
{
break;
}
}
return result;
}
catch (Exception exception)
{
if (exception.MustBeRethrown())
{
throw;
}
InternalLogger.Warn("Exception during filter evaluation: {0}", exception);
return FilterResult.Ignore;
}
}
private static bool WriteToTargetWithFilterChain(TargetWithFilterChain targetListHead, LogEventInfo logEvent, AsyncContinuation onException)
{
var target = targetListHead.Target;
var result = GetFilterResult(targetListHead.FilterChain, logEvent);
if ((result == FilterResult.Ignore) || (result == FilterResult.IgnoreFinal))
{
if (InternalLogger.IsDebugEnabled)
{
InternalLogger.Debug("{0}.{1} Rejecting message because of a filter.", logEvent.LoggerName, logEvent.Level);
}
if (result == FilterResult.IgnoreFinal)
{
return false;
}
return true;
}
target.WriteAsyncLogEvent(logEvent.WithContinuation(onException));
if (result == FilterResult.LogFinal)
{
return false;
}
return true;
}