public TraceEvent(
IVariantEventWriter variantEventWriter,
EventTask taskId,
ushort eventId,
string eventName,
EventLevel level,
EventOpcode opcode,
EventChannel channel,
EventKeywords keywords,
string format,
bool hasId,
ProvisionalMetadataAttribute provisionalAttribute,
int typeFieldIndex,
EventExtendedMetadataAttribute extendedMetadataAttribute = null)
{
if (string.IsNullOrEmpty(eventName))
{
throw new ArgumentException(
StringResources.Error_EventNameNullOrEmpty,
"eventName");
}
// We need to apply a keyword mask to the keyword in order for it to show up
// in the Windows Event Log. The mask that is applied depends on the channel
// in which we want the event to show up.
//
// TODO: We are currently hard-coding the mask values, but this is not ideal
// because we have reverse-engineered these values by looking at the header
// file generated by mc.exe. The algorithm to determine these values is an
// internal implementation detail of mc.exe. A better alternative would be
// to get the mask value from the source file generated by mc.exe, instead
// of hard-coding it as a constant here.
ulong keywordMask = 0;
switch (channel)
{
case EventChannel.Admin:
keywordMask = AdminChannelKeywordMask;
break;
case EventChannel.Debug:
keywordMask = DebugChannelKeywordMask;
break;
case EventChannel.Operational:
keywordMask = OperationalChannelKeywordMask;
break;
}
long keywordWithMask;
unchecked
{
keywordWithMask = (long)((ulong)keywords | keywordMask | TestKeyword);
}
// We ignore the opcode field for now. Manifest generation does the same.
this.descriptor = new GenericEventDescriptor(
eventId,
version,
(byte)channel,
(byte)level,
0,
(int)taskId,
keywordWithMask);
this.eventName = eventName;
this.taskId = taskId;
this.level = level;
this.filterStates = new bool[(int)TraceSinkType.Max];
this.samplingRatio = 0;
this.hasId = hasId;
this.typeFieldIndex = typeFieldIndex;
this.format = format;
this.taskName =
typeof(FabricEvents.Tasks).GetFields().Single(f => (EventTask)f.GetRawConstantValue() == taskId).Name;
this.variantEventWriter = variantEventWriter;
// By default, provisional feature is disabled during object initialization. This needs to be enabled
// by calling the Update function.
this.isProvisionalFeatureEnabled = false;
this.provisionalData = provisionalAttribute;
if (this.provisionalData != null)
{
this.isProvisionalEvent = true;
this.provisionalCache = AgeBasedCache <VariantId, Variant[]> .DefaultInstance;
this.PopulatePositions();
}
for (TraceSinkType sink = 0; sink < TraceSinkType.Max; sink++)
{
var status = TraceConfig.GetEventEnabledStatus(sink, this.level, this.taskId, this.eventName);
var sampling = TraceConfig.GetEventSamplingRatio(sink, this.level, this.taskId, this.eventName);
this.UpdateProvisionalFeatureStatus(sink, TraceConfig.GetEventProvisionalFeatureStatus(sink));
this.UpdateSinkEnabledStatus(sink, status);
this.UpdateSinkSamplingRatio(sink, sampling);
}
#if DotNetCoreClrLinux
// TODO - Following code will be removed once fully transitioned to structured traces in Linux
this.linuxStructuredTracesEnabled = TraceConfig.GetLinuxStructuredTracesEnabled();
TraceConfig.OnLinuxStructuredTracesEnabledUpdate += this.UpdateLinuxStructuredTracesEnabled;
#endif
this.ExtendedMetadata = extendedMetadataAttribute;
}
protected ReadOnlyDictionary <int, TraceEvent> GenerateEventDescriptors(IVariantEventWriter variantEventWriter)
{
var eventDescriptors = new Dictionary <int, TraceEvent>();
foreach (var eventMethod in this.GetType().GetMethods())
{
EventAttribute eventAttribute = (EventAttribute)eventMethod.GetCustomAttributes(typeof(EventAttribute), false).SingleOrDefault();
if (eventAttribute == null)
{
continue;
}
var hasId = false;
int typeFieldIndex = -1;
var methodParams = eventMethod.GetParameters().ToList();
if (methodParams.Any())
{
typeFieldIndex = methodParams.FindIndex(e => e.Name == "type");
hasId = methodParams[0].Name == "id";
}
var eventId = (ushort)eventAttribute.EventId;
ProvisionalMetadataAttribute provisional = (ProvisionalMetadataAttribute)CustomAttributeExtensions.GetCustomAttributes(eventMethod, typeof(ProvisionalMetadataAttribute), false).SingleOrDefault();
EventExtendedMetadataAttribute extended = (EventExtendedMetadataAttribute)CustomAttributeExtensions.GetCustomAttributes(eventMethod, typeof(EventExtendedMetadataAttribute), false).SingleOrDefault();
string eventName = eventMethod.Name;
if (extended != null && extended.TableEntityKind != TableEntityKind.Unknown)
{
eventName = string.Format(FabricEventSourceConstants.OperationalChannelEventNameFormat, extended.TableEntityKind, FabricEventSourceConstants.OperationalChannelTableNameSuffix, eventName);
}
eventDescriptors[eventId] = new TraceEvent(
variantEventWriter,
eventAttribute.Task,
eventId,
eventName,
eventAttribute.Level,
eventAttribute.Opcode,
ChannelToUse(eventAttribute, extended),
eventAttribute.Keywords,
FormatStringToUse(eventAttribute, extended),
hasId,
provisional,
typeFieldIndex,
extended);
// Wire up TraceConfig filtering to event enabled status
TraceConfig.OnFilterUpdate += sinkType =>
{
eventDescriptors[eventId].UpdateSinkEnabledStatus(sinkType, TraceConfig.GetEventEnabledStatus(
sinkType,
eventDescriptors[eventId].Level,
eventDescriptors[eventId].TaskId,
eventDescriptors[eventId].EventName));
eventDescriptors[eventId].UpdateSinkSamplingRatio(sinkType, TraceConfig.GetEventSamplingRatio(
sinkType,
eventDescriptors[eventId].Level,
eventDescriptors[eventId].TaskId,
eventDescriptors[eventId].EventName));
eventDescriptors[eventId].UpdateProvisionalFeatureStatus(sinkType, TraceConfig.GetEventProvisionalFeatureStatus(sinkType));
};
}
return(new ReadOnlyDictionary <int, TraceEvent>(eventDescriptors));
}