private EventArrivedEventArgs CreateEventArgsFromEventRecord(EventRecord eventRecord)
{
using (TraceEventInfoWrapper traceEventInfo = new TraceEventInfoWrapper(eventRecord))
{
Guid providerId = eventRecord.EventHeader.ProviderId;
try
{
// Get the properties using the current event information (schema).
IList <PropertyItem> properties = traceEventInfo.GetProperties(eventRecord);
string fmtmsg = traceEventInfo.GetMessage();
string message = traceEventInfo.FormatMessage(fmtmsg, properties.Select(p => p.Value.ToString()).ToArray());
EventArrivedEventArgs args = new EventArrivedEventArgs(providerId, traceEventInfo.EventName, properties);
args.Message = message;
args.LogDateTime = DateTime.FromFileTime(eventRecord.EventHeader.TimeStamp);
args.Task = traceEventInfo.GetTask();
args.Level = eventRecord.EventHeader.EventDescriptor.Level;
args.LevelName = traceEventInfo.GetLevelName();
args.ProcessId = eventRecord.EventHeader.ProcessId;
args.ThreadId = eventRecord.EventHeader.ThreadId;
return(args);
}
catch (Exception e)
{
// there are some error when creating a event arg, so use the exception as the message
EventArrivedEventArgs args = new EventArrivedEventArgs(e);
args.Task = string.Empty;
return(args);
}
}
}
/// <summary>
/// The create event args from event record.
/// </summary>
/// <param name="eventRecord">
/// The event record.
/// </param>
/// <returns>
/// The <see cref="EventArrivedEventArgs"/>.
/// </returns>
private EventArrivedEventArgs CreateEventArgsFromEventRecord(EventRecord eventRecord)
{
var eventOpcode = eventRecord.EventHeader.EventDescriptor.Opcode;
TraceEventInfoWrapper traceEventInfo;
var shouldDispose = false;
// Find the event information (schema).
var index = this.traceEventInfoCache.IndexOfKey(eventOpcode);
if (index >= 0)
{
traceEventInfo = this.traceEventInfoCache.Values[index];
}
else
{
traceEventInfo = new TraceEventInfoWrapper(eventRecord);
try
{
this.traceEventInfoCache.Add(eventOpcode, traceEventInfo);
}
catch (ArgumentException)
{
// Some other thread added this entry.
shouldDispose = true;
}
}
// Get the properties using the current event information (schema).
var properties = traceEventInfo.GetProperties(eventRecord);
// Dispose the event information because it doesn't live in the cache
if (shouldDispose)
{
traceEventInfo.Dispose();
}
var args = new EventArrivedEventArgs(eventOpcode, properties);
return(args);
}
private EventArrivedEventArgs CreateEventArgsFromEventRecord(EventRecord eventRecord)
{
if (traceEventInfoCache == null)
{
return(null);
}
Guid providerId = eventRecord.EventHeader.ProviderId;
TraceEventInfoWrapper traceEventInfo;
byte[] key = CreateComposedKey(providerId, eventRecord.EventHeader.EventDescriptor.Opcode);
bool shouldDispose = false;
// Find the event information (schema).
if (!traceEventInfoCache.TryGetValue(key, out traceEventInfo))
{
traceEventInfo = new TraceEventInfoWrapper(eventRecord);
try
{
traceEventInfoCache.Add(key, traceEventInfo);
}
catch (ArgumentException)
{
// Someone other thread added this entry.
shouldDispose = true;
}
}
// Get the properties using the current event information (schema).
PropertyBag properties = traceEventInfo.GetProperties(eventRecord);
EventArrivedEventArgs args = CreateEventArgs();
args.Timestamp = eventRecord.EventHeader.TimeStamp;
args.ProviderId = providerId;
args.EventId = eventRecord.EventHeader.EventDescriptor.Id;
args.EventName = traceEventInfo.EventName;
args.Properties = properties;
IntPtr addr = eventRecord.UserData;
int length = eventRecord.UserDataLength;
if (addr != IntPtr.Zero && length > 0)
{
byte[] buffer = new byte[length];
for (int i = 0; i < length; i++)
{
buffer[i] = Marshal.ReadByte(addr);
addr = new IntPtr((long)addr + 1);
}
using (System.IO.BinaryReader reader = new System.IO.BinaryReader(new System.IO.MemoryStream(buffer)))
{
args.ParseUserData(args.EventId, reader);
}
}
// Dispose the event information because it doesn't live in the cache
if (shouldDispose)
{
traceEventInfo.Dispose();
}
return(args);
}
