/// <summary>
/// Контекст трассировки
/// </summary>
/// <param name="id">идентификатор трассировки</param>
/// <param name="root">корневое событие трассировки</param>
internal TraceContext(TraceId id
, TraceEvent root)
{
if (id == null)
{
throw new ArgumentNullException("id");
}
_id = id;
_root = root;
if (_root == null)
{
_root = TraceEvent.Create(_id, _id.Name);
}
}
/// <summary>
/// Добавить событие
/// </summary>
/// <param name="name">сообщение</param>
/// <param name="type">тип</param>
public static void AddEvent(string name)
{
var current = Current;
var @event = TraceEvent.Create(current.Id, name);
current.Root.AddEvent(@event);
var h = current.OnEvent;
if (h != null)
{
h(current, new OnAppendEventArgs(@event));
}
}
/// <summary>
/// Окружение контекста трассировки
/// </summary>
/// <param name="eventName">имя события</param>
/// <param name="mode"></param>
public TraceContextScope(string eventName
, TraceContextMode mode = TraceContextMode.Add)
{
if (Current != null)
{
Id = Current.Id;
}
else
{
Id = TraceId.Create(eventName);
}
Root = TraceEvent.Create(id: Id, name: eventName);
Mode = mode;
PushScope();
}
/// <summary>
/// Перед отправкой сообщения включаем в заголовок информацию о текущей трассировке
/// </summary>
/// <param name="request">запрос</param>
/// <param name="channel">канал</param>
/// <returns></returns>
public object BeforeSendRequest(ref Message request, IClientChannel channel)
{
var scope = TraceContextScope.Current;
if (scope == null)
{
return(null);
}
var action = request.Headers.Action;
action = action.Replace("http://tempuri.org/", "");
var id = scope.Id;
var @event = TraceEvent.Create(id: id
, name: "call> " + action);
var callScope = new TraceContextScope(id, @event, TraceContextMode.Add);
var index = request.Headers.FindHeader(TraceMeHeader.HeaderName, Namespace.Main);
if (index > -1)
{
request.Headers.RemoveAt(index);
}
var header = MessageHeader.CreateHeader(
TraceMeHeader.HeaderName, Namespace.Main
, new TraceMeHeader()
{
Id = id,
});
request.Headers.Add(header);
return(callScope);
}
/// <summary>
/// После принятия запроса если присутствует флаг TraceMe, создаем окружение трассировки
/// </summary>
/// <param name="request"></param>
/// <param name="channel"></param>
/// <param name="instanceContext"></param>
/// <returns></returns>
public object AfterReceiveRequest(ref Message request, IClientChannel channel, InstanceContext instanceContext)
{
var index = request.Headers.FindHeader(TraceMeHeader.HeaderName, Namespace.Main);
if (index < 0)
{
return(null);
}
var header = request.Headers.GetHeader <TraceMeHeader>(index);
if (header == null)
{
return(null);
}
var @event = TraceEvent.Create(
id: header.Id
, name: "disp> " + instanceContext.Host.Description.Name);
@event["host"] = HostName;
return(new TraceContextScope(header.Id, @event, TraceContextMode.Add));
}