public override async void OnEntry(MethodExecutionArgs args)
{
var traceId = GetTraceId(args.Instance);
var methodId = Guid.NewGuid().ToString();
var parentMethodId = PeekAndPushParentMethodId(methodId, args.Instance);
var windowsUser = System.Security.Principal.WindowsIdentity.GetCurrent();
var message = new TraceMessage
{
TraceId = traceId,
MethodId = methodId,
ParentMethodId = parentMethodId,
TraceEvent = TraceEvent.OnMethodEntry,
Timestamp = DateTime.Now,
MethodName = _methodName,
Arguments = args.GetMethodArguments(),
MachineName = Environment.MachineName,
WindowsUsername = windowsUser != null ? windowsUser.Name : "Unknown",
};
message.Broadcast();
// ensure TraceId and ParentMethodId are passed across http boundaries
foreach (var argument in args.Arguments.Where(a => a is HttpRequestMessage))
{
var httpRequest = argument as HttpRequestMessage;
if (httpRequest == null) continue;
if (!httpRequest.Headers.Contains(TraceIdHeaderKey)) httpRequest.Headers.Add(TraceIdHeaderKey, traceId);
if (!httpRequest.Headers.Contains(ParentMethodHeaderKey)) httpRequest.Headers.Add(ParentMethodHeaderKey, methodId);
var httpBoundaryRequestMessage = new TraceHttpBoundaryRequestMessage
{
TraceId = traceId,
MethodId = methodId,
Uri = httpRequest.RequestUri.ToString(),
HttpMethod = httpRequest.Method.ToString(),
Timestamp = DateTime.Now,
MachineName = Environment.MachineName,
Headers = httpRequest.Headers.GetHeaders(),
Content = (httpRequest.Content != null) ? await httpRequest.Content.ReadAsStringAsync() : "",
};
httpBoundaryRequestMessage.Broadcast();
}
args.MethodExecutionTag = new TraceAttributeContext(traceId, methodId, parentMethodId);
}
public void SendHttpBoundaryRequest(TraceHttpBoundaryRequestMessage message)
{
Clients.All.broadcastHttpRequestMessage(message);
}