|
|
using System;
|
|
|
using System.Collections.Generic;
|
|
|
using System.Linq;
|
|
|
using System.Text;
|
|
|
|
|
|
namespace Implab.Diagnostics {
|
|
|
public abstract class TextListenerBase : ServiceLocator, IEventTextFormatter<object>, IEventTextFormatter<TraceEvent> {
|
|
|
|
|
|
readonly Dictionary<object, Action> m_subscriptions = new Dictionary<object, Action>();
|
|
|
readonly LogicalOperation m_boundOperation;
|
|
|
readonly int m_baseIndent;
|
|
|
|
|
|
protected TextListenerBase(bool global) {
|
|
|
Register(this);
|
|
|
if (!global) {
|
|
|
m_boundOperation = TraceContext.Instance.CurrentOperation;
|
|
|
m_baseIndent = Math.Max(0, m_boundOperation.Level - 1);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public void Subscribe(Type eventType) {
|
|
|
if (eventType == null)
|
|
|
throw new ArgumentNullException("eventType");
|
|
|
GetType().GetMethod("Subscribe", new Type[0]).MakeGenericMethod(eventType).Invoke(this, null);
|
|
|
}
|
|
|
|
|
|
public void Subscribe<TEvent>() {
|
|
|
Subscribe<TEvent>(LogChannel<TEvent>.Default);
|
|
|
}
|
|
|
|
|
|
public void Subscribe<TEvent>(LogChannel<TEvent> channel) {
|
|
|
if (channel == null)
|
|
|
throw new ArgumentNullException("channel");
|
|
|
|
|
|
lock (m_subscriptions) {
|
|
|
AssertNotDisposed();
|
|
|
|
|
|
var formatter = GetService<IEventTextFormatter<TEvent>>();
|
|
|
var channelName = channel.Name;
|
|
|
|
|
|
EventHandler<LogEventArgs<TEvent>> handler = (sender, args) => {
|
|
|
var text = formatter.Format(args, args.Value);
|
|
|
text.indent -= m_baseIndent;
|
|
|
|
|
|
if (IsRelated(args.Operation))
|
|
|
WriteEntry(args, text, channelName);
|
|
|
};
|
|
|
|
|
|
if (m_subscriptions.ContainsKey(channel))
|
|
|
return;
|
|
|
|
|
|
channel.Events += handler;
|
|
|
|
|
|
Action unsubscribe = () => {
|
|
|
channel.Events -= handler;
|
|
|
};
|
|
|
|
|
|
m_subscriptions.Add(channel, unsubscribe);
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public bool IsRelated(LogicalOperation op) {
|
|
|
if (m_boundOperation == null)
|
|
|
return true;
|
|
|
|
|
|
while (op != m_boundOperation && op.Level > m_boundOperation.Level)
|
|
|
op = op.Parent;
|
|
|
return op == m_boundOperation;
|
|
|
}
|
|
|
|
|
|
public void Unsubscribe<TEvent>(LogChannel<TEvent> channel) {
|
|
|
if (channel == null)
|
|
|
throw new ArgumentNullException("channel");
|
|
|
|
|
|
lock (m_subscriptions) {
|
|
|
Action subscription;
|
|
|
if (m_subscriptions.TryGetValue(channel, out subscription)) {
|
|
|
subscription();
|
|
|
m_subscriptions.Remove(channel);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
public void UnsubscribeAll() {
|
|
|
lock (m_subscriptions) {
|
|
|
foreach (var subscription in m_subscriptions.Values)
|
|
|
subscription();
|
|
|
m_subscriptions.Clear();
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// Вызывается для записи текста сообщения, в журнал.
|
|
|
/// </summary>
|
|
|
/// <remarks>
|
|
|
/// Данный метод может вызваться из разных потоков одновременно. Возможна ситуация, когда
|
|
|
/// данный метод вызывается уже после освобождения ообъекта методом <see cref="Dispose()"/>.
|
|
|
/// </remarks>
|
|
|
/// <param name="text">Текст сообщения.</param>
|
|
|
/// <param name = "channel"></param>
|
|
|
protected abstract void WriteEntry(LogEventArgs args, EventText text, string channel);
|
|
|
|
|
|
public EventText Format(LogEventArgs args, object data) {
|
|
|
return new EventText {
|
|
|
indent = args.Operation.Level,
|
|
|
content = data.ToString()
|
|
|
};
|
|
|
}
|
|
|
|
|
|
public EventText Format(LogEventArgs args, TraceEvent data) {
|
|
|
var level = args.Operation.Level;
|
|
|
if (data.EventType == TraceEventType.OperationCompleted || data.EventType == TraceEventType.OperationStarted)
|
|
|
level--;
|
|
|
|
|
|
return new EventText {
|
|
|
indent = level,
|
|
|
content = data.ToString()
|
|
|
};
|
|
|
}
|
|
|
|
|
|
protected override void Dispose(bool disposing) {
|
|
|
base.Dispose(disposing);
|
|
|
if (disposing) {
|
|
|
UnsubscribeAll();
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
