I have found my answer in github.
https://github.com/jonwagner/EventSourceProxy/blob/master/EventSourceProxy/EventSourceManifest.cs
Thanks.
题
I want to get the Event Provider Guid based on Event Provider Name(Ex: Sample-Test)
Sample Code
[EventSource(Name = "Sample-Test")]
public sealed class EventSourceLogger : EventSource
Here is my provider
internal class EventProviderVersionOne : EventProvider
{
internal EventProviderVersionOne(Guid id)
: base(id)
{ }
[StructLayout(LayoutKind.Explicit, Size = 16)]
private struct EventData
{
[FieldOffset(0)]
internal UInt64 DataPointer;
[FieldOffset(8)]
internal uint Size;
[FieldOffset(12)]
internal int Reserved;
}
}
My logger class for logging events
public class EventLogger
{
public static EventLogger Log = new EventLogger();
internal static EventProviderVersionOne MProvider = new EventProviderVersionOne(new Guid(ConfigurationSettings.AppSettings["EtwEventProviderGuid"]));
...
}
Please suggest the code necessary to get GUID based on EventSourceName. I have already registered with Eventvwr.
解决方案
I have found my answer in github.
https://github.com/jonwagner/EventSourceProxy/blob/master/EventSourceProxy/EventSourceManifest.cs
Thanks.
其他提示
I used PerfView to get the GUID. Start a capturing, enable the provider you want to know the GUID, start the logging, go to "log" entry and here you see the GUID.
When you registered the Provider system-wide you can use use xperf -providers
to see the GUID.
The following appears to be the algorithm in a less obfuscated form:
public static byte[] Concat(byte[] a, byte[] b)
{
byte[] retval = new byte[a.Length + b.Length];
a.CopyTo(retval, 0);
b.CopyTo(retval, a.Length);
return retval;
}
public static byte[] Slice(byte[] a, int startIndex, int length)
{
byte[] retval = new byte[length];
Array.Copy(a, startIndex, retval, 0, length);
return retval;
}
private static Guid GenerateGuidFromName(string name)
{
byte[] namespaceGuid = Guid.Parse("b22d2c48-90c3-c847-87f8-1a15bfc130fb").ToByteArray();
byte[] nameBytes = Encoding.BigEndianUnicode.GetBytes(name);
byte[] sha1Hash = SHA1.Create().ComputeHash(Concat(namespaceGuid, nameBytes));
byte[] guidBytes = Slice(sha1Hash, 0, 16);
// Overwrite the top 4 bits of the 8th byte with 0101
{
guidBytes[7] &= 0x0F;
guidBytes[7] |= 0x50;
}
return new Guid(guidBytes);
}
This is my quick and dirty way to do this. It works fine for the utility program I use it in, but I'd cache the mappings in a long running production application to avoid unintended consequences of create event sources.
private static Guid GenerateGuidFromName(string name)
{
var eventSource = new EventSource(name);
return eventSource.Guid;
}