/// <summary>
/// Initializes a new instance of the <see cref="LoggerConfiguration" /> class.
/// </summary>
/// <param name="targetsByLevel">The targets by level.</param>
/// <param name="exceptionLoggingOldStyle"> Use the old exception log handling of NLog 3.0?
/// </param>
public LoggerConfiguration(TargetWithFilterChain[] targetsByLevel, bool exceptionLoggingOldStyle = false)
{
this.targetsByLevel = targetsByLevel;
#pragma warning disable 618
ExceptionLoggingOldStyle = exceptionLoggingOldStyle;
#pragma warning restore 618
}
public void PrecalculateNeedsStackTrace()
{
_needsStackTrace = 0;
for (TargetWithFilterChain awf = this; awf != null; awf = awf.Next)
{
if (_needsStackTrace >= 2)
{
break;
}
Target app = awf.Target;
int nst = app.NeedsStackTrace();
_needsStackTrace = Math.Max(_needsStackTrace, nst);
FilterCollection filterChain = awf.FilterChain;
for (int i = 0; i < filterChain.Count; ++i)
{
Filter filter = filterChain[i];
nst = filter.NeedsStackTrace();
_needsStackTrace = Math.Max(_needsStackTrace, nst);
}
}
}
internal static void Write(Type loggerType, TargetWithFilterChain targets, LogEventInfo logEvent, LogFactory factory)
{
if (targets == null)
{
return;
}
#if !NET_CF
StackTraceUsage 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
int firstUserFrame = FindCallingMethodOnStackTrace(stackTrace, loggerType);
logEvent.SetStackTrace(stackTrace, firstUserFrame);
}
#endif
int 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;
}
}
// Destroy the objects
logEvent.Dispose();
}
internal static void Write(Type loggerType, TargetWithFilterChain targets, LogEventInfo logEvent, LogFactory factory)
{
if (targets == null)
return;
#if !NETCF
bool needTrace = false;
bool needTraceSources = false;
int nst = targets.NeedsStackTrace;
if (nst > 0)
needTrace = true;
if (nst > 1)
needTraceSources = true;
StackTrace stackTrace = null;
if (needTrace && !logEvent.HasStackTrace)
{
int firstUserFrame = 0;
stackTrace = new StackTrace(STACK_TRACE_SKIP_METHODS, needTraceSources);
for (int i = 0; i < stackTrace.FrameCount; ++i)
{
System.Reflection.MethodBase mb = stackTrace.GetFrame(i).GetMethod();
if (mb.DeclaringType == loggerType)
{
firstUserFrame = i + 1;
}
else
{
if (firstUserFrame != 0)
break;
}
}
logEvent.SetStackTrace(stackTrace, firstUserFrame);
}
#endif
for (TargetWithFilterChain awf = targets; awf != null; awf = awf.Next)
{
Target app = awf.Target;
FilterResult result = FilterResult.Neutral;
try
{
FilterCollection filterChain = awf.FilterChain;
for (int i = 0; i < filterChain.Count; ++i)
{
Filter f = filterChain[i];
result = f.Check(logEvent);
if (result != FilterResult.Neutral)
break;
}
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;
continue;
}
}
catch (Exception ex)
{
InternalLogger.Error("FilterChain exception: {0}", ex);
if (factory.ThrowExceptions)
throw;
else
continue;
}
try
{
app.Write(logEvent);
}
catch (Exception ex)
{
InternalLogger.Error("Target exception: {0}", ex);
if (factory.ThrowExceptions)
throw;
else
continue;
}
if (result == FilterResult.LogFinal)
return;
}
}
internal LoggerConfiguration GetConfigurationForLogger(string name, LoggingConfiguration config)
{
TargetWithFilterChain[]targetsByLevel = new TargetWithFilterChain[LogLevel.MaxLevel.Ordinal + 1];
TargetWithFilterChain[]lastTargetsByLevel = new TargetWithFilterChain[LogLevel.MaxLevel.Ordinal + 1];
if (config != null && IsLoggingEnabled())
{
GetTargetsByLevelForLogger(name, config.LoggingRules, targetsByLevel, lastTargetsByLevel);
}
InternalLogger.Debug("Targets for {0} by level:", name);
for (int i = 0; i <= LogLevel.MaxLevel.Ordinal; ++i)
{
StringBuilder sb = new StringBuilder();
sb.AppendFormat(CultureInfo.InvariantCulture, "{0} =>", LogLevel.FromOrdinal(i));
for (TargetWithFilterChain afc = targetsByLevel[i]; afc != null; afc = afc.Next)
{
sb.AppendFormat(CultureInfo.InvariantCulture, " {0}", afc.Target.Name);
if (afc.FilterChain.Count > 0)
sb.AppendFormat(CultureInfo.InvariantCulture, " ({0} filters)", afc.FilterChain.Count);
}
InternalLogger.Debug(sb.ToString());
}
return new LoggerConfiguration(targetsByLevel);
}
internal void GetTargetsByLevelForLogger(string name, LoggingRuleCollection rules, TargetWithFilterChain[]targetsByLevel, TargetWithFilterChain[]lastTargetsByLevel)
{
foreach (LoggingRule rule in rules)
{
if (rule.NameMatches(name))
{
for (int i = 0; i <= LogLevel.MaxLevel.Ordinal; ++i)
{
if (i >= GlobalThreshold.Ordinal && rule.IsLoggingEnabledForLevel(LogLevel.FromOrdinal(i)))
{
foreach (Target target in rule.Targets)
{
TargetWithFilterChain awf = new TargetWithFilterChain(target, rule.Filters);
if (lastTargetsByLevel[i] != null)
{
lastTargetsByLevel[i].Next = awf;
}
else
{
targetsByLevel[i] = awf;
}
lastTargetsByLevel[i] = awf;
}
}
}
GetTargetsByLevelForLogger(name, rule.ChildRules, targetsByLevel, lastTargetsByLevel);
if (rule.Final)
break;
}
}
for (int i = 0; i <= LogLevel.MaxLevel.Ordinal; ++i)
{
TargetWithFilterChain tfc = targetsByLevel[i];
if (tfc != null)
tfc.PrecalculateNeedsStackTrace();
}
}
/// <summary>
/// Creates a logger that discards all log messages.
/// </summary>
/// <returns></returns>
public Logger CreateNullLogger()
{
TargetWithFilterChain[]targetsByLevel = new TargetWithFilterChain[LogLevel.MaxLevel.Ordinal + 1];
Logger newLogger = new Logger();
newLogger.Initialize("", new LoggerConfiguration(targetsByLevel), this);
return newLogger;
}
private static bool WriteToTargetWithFilterChain(TargetWithFilterChain targetListHead, LogEventInfo logEvent, AsyncContinuation onException)
{
Target target = targetListHead.Target;
FilterResult 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;
}
internal void GetTargetsByLevelForLogger(string name, IList<LoggingRule> rules, TargetWithFilterChain[] targetsByLevel, TargetWithFilterChain[] lastTargetsByLevel)
{
foreach (LoggingRule rule in rules)
{
if (!rule.NameMatches(name))
{
continue;
}
for (int i = 0; i <= LogLevel.MaxLevel.Ordinal; ++i)
{
if (i < this.GlobalThreshold.Ordinal || !rule.IsLoggingEnabledForLevel(LogLevel.FromOrdinal(i)))
{
continue;
}
foreach (Target target in rule.Targets)
{
var awf = new TargetWithFilterChain(target, rule.Filters);
if (lastTargetsByLevel[i] != null)
{
lastTargetsByLevel[i].NextInChain = awf;
}
else
{
targetsByLevel[i] = awf;
}
lastTargetsByLevel[i] = awf;
}
}
this.GetTargetsByLevelForLogger(name, rule.ChildRules, targetsByLevel, lastTargetsByLevel);
if (rule.Final)
{
break;
}
}
for (int i = 0; i <= LogLevel.MaxLevel.Ordinal; ++i)
{
TargetWithFilterChain tfc = targetsByLevel[i];
if (tfc != null)
{
tfc.PrecalculateStackTraceUsage();
}
}
}
public LoggerConfiguration(TargetWithFilterChain[] targetsByLevel)
{
_targetsByLevel = targetsByLevel;
}