public static TracePayload GetSerializedPayload(object source, TraceRecord traceRecord, Exception exception, bool getServiceReference)
{
string eventSource = null;
string extendedData = null;
string serializedException = null;
if (source != null)
{
eventSource = CreateSourceString(source);
}
if (traceRecord != null)
{
StringBuilder sb = new StringBuilder();
XmlTextWriter writer = new XmlTextWriter(new StringWriter(sb, CultureInfo.CurrentCulture));
writer.WriteStartElement(DiagnosticStrings.ExtendedDataTag);
traceRecord.WriteTo(writer);
writer.WriteEndElement();
extendedData = sb.ToString();
}
if (exception != null)
{
serializedException = DiagnosticTrace.ExceptionToTraceString(exception);
}
if (getServiceReference && (DiagnosticTrace.traceAnnotation != null))
{
return(new TracePayload(serializedException, eventSource, DiagnosticTrace.appDomainFriendlyName, extendedData, DiagnosticTrace.traceAnnotation()));
}
return(new TracePayload(serializedException, eventSource, DiagnosticTrace.appDomainFriendlyName, extendedData, string.Empty));
}
static string BuildTrace(ref EventDescriptor eventDescriptor, string description, TracePayload payload)
{
StringBuilder sb = new StringBuilder();
XmlTextWriter writer = new XmlTextWriter(new StringWriter(sb, CultureInfo.CurrentCulture));
writer.WriteStartElement(DiagnosticStrings.TraceRecordTag);
writer.WriteAttributeString(DiagnosticStrings.NamespaceTag, DiagnosticTrace.TraceRecordVersion);
writer.WriteAttributeString(DiagnosticStrings.SeverityTag,
TraceLevelHelper.LookupSeverity((TraceEventLevel)eventDescriptor.Level, (TraceEventOpcode)eventDescriptor.Opcode));
writer.WriteAttributeString(DiagnosticStrings.ChannelTag, DiagnosticTrace.LookupChannel((TraceChannel)eventDescriptor.Channel));
writer.WriteElementString(DiagnosticStrings.TraceCodeTag, DiagnosticTrace.GenerateTraceCode(ref eventDescriptor));
writer.WriteElementString(DiagnosticStrings.DescriptionTag, description);
writer.WriteElementString(DiagnosticStrings.AppDomain, payload.AppDomainFriendlyName);
if (!string.IsNullOrEmpty(payload.EventSource))
{
writer.WriteElementString(DiagnosticStrings.SourceTag, payload.EventSource);
}
if (!string.IsNullOrEmpty(payload.ExtendedData))
{
writer.WriteRaw(payload.ExtendedData);
}
if (!string.IsNullOrEmpty(payload.SerializedException))
{
writer.WriteRaw(payload.SerializedException);
}
writer.WriteEndElement();
return(sb.ToString());
}
public static EventLogger UnsafeCreateEventLogger(string eventLogSourceName, DiagnosticTrace diagnosticTrace)
{
EventLogger logger = new EventLogger();
logger.SetLogSourceName(eventLogSourceName, diagnosticTrace);
return(logger);
}
public void Event(ref EventDescriptor eventDescriptor, string description)
{
if (this.TracingEnabled)
{
TracePayload tracePayload = DiagnosticTrace.GetSerializedPayload(null, null, null);
this.WriteTraceSource(ref eventDescriptor, description, tracePayload);
}
}
public void Event(int eventId, TraceEventLevel traceEventLevel, TraceChannel channel, string description)
{
if (this.TracingEnabled)
{
EventDescriptor eventDescriptor = DiagnosticTrace.GetEventDescriptor(eventId, channel, traceEventLevel);
this.Event(ref eventDescriptor, description);
}
}
public EventLogger(string eventLogSourceName, DiagnosticTrace diagnosticTrace)
{
try
{
this.diagnosticTrace = diagnosticTrace;
//set diagnostics trace prior to calling SafeSetLogSourceName
if (canLogEvent)
{
SafeSetLogSourceName(eventLogSourceName);
}
}
catch (SecurityException)
{
// running in PT, do not try to log events anymore
canLogEvent = false;
// not throwing exception on purpose
}
}
static string ExceptionToTraceString(Exception exception)
{
StringBuilder sb = new StringBuilder();
XmlTextWriter xml = new XmlTextWriter(new StringWriter(sb, CultureInfo.CurrentCulture));
xml.WriteStartElement(DiagnosticStrings.ExceptionTag);
xml.WriteElementString(DiagnosticStrings.ExceptionTypeTag, DiagnosticTrace.XmlEncode(exception.GetType().AssemblyQualifiedName));
xml.WriteElementString(DiagnosticStrings.MessageTag, DiagnosticTrace.XmlEncode(exception.Message));
xml.WriteElementString(DiagnosticStrings.StackTraceTag, DiagnosticTrace.XmlEncode(StackTraceString(exception)));
xml.WriteElementString(DiagnosticStrings.ExceptionStringTag, DiagnosticTrace.XmlEncode(exception.ToString()));
System.ComponentModel.Win32Exception win32Exception = exception as System.ComponentModel.Win32Exception;
if (win32Exception != null)
{
xml.WriteElementString(DiagnosticStrings.NativeErrorCodeTag, win32Exception.NativeErrorCode.ToString("X", CultureInfo.InvariantCulture));
}
if (exception.Data != null && exception.Data.Count > 0)
{
xml.WriteStartElement(DiagnosticStrings.DataItemsTag);
foreach (object dataItem in exception.Data.Keys)
{
xml.WriteStartElement(DiagnosticStrings.DataTag);
xml.WriteElementString(DiagnosticStrings.KeyTag, DiagnosticTrace.XmlEncode(dataItem.ToString()));
xml.WriteElementString(DiagnosticStrings.ValueTag, DiagnosticTrace.XmlEncode(exception.Data[dataItem].ToString()));
xml.WriteEndElement();
}
xml.WriteEndElement();
}
if (exception.InnerException != null)
{
xml.WriteStartElement(DiagnosticStrings.InnerExceptionTag);
xml.WriteRaw(ExceptionToTraceString(exception.InnerException));
xml.WriteEndElement();
}
xml.WriteEndElement();
return(sb.ToString());
}
public static TracePayload GetSerializedPayload(object source, TraceRecord traceRecord, Exception exception)
{
return(DiagnosticTrace.GetSerializedPayload(source, traceRecord, exception, false));
}
public void TraceTransfer(Guid newId)
{
Guid oldId = DiagnosticTrace.ActivityId;
if (newId != oldId)
{
try
{
if (this.HaveListeners)
{
this.TraceSource.TraceTransfer(0, null, newId);
}
//also emit to ETW
if (this.IsEtwEventEnabled(ref DiagnosticTrace.transferEventDescriptor))
{
this.etwProvider.WriteTransferEvent(ref DiagnosticTrace.transferEventDescriptor, newId,
DiagnosticTrace.traceAnnotation == null ? string.Empty : DiagnosticTrace.traceAnnotation(),
DiagnosticTrace.appDomainFriendlyName);
}
}
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
LogTraceFailure(null, e);
}
}
}
void SetLogSourceName(string updatedEventLogSourceName, DiagnosticTrace updatedDiagnosticTrace)
{
this.eventLogSourceName = updatedEventLogSourceName;
this.diagnosticTrace = updatedDiagnosticTrace;
}
protected static string XmlEncode(string text)
{
return(DiagnosticTrace.XmlEncode(text));
}
