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implab » ImplabNet
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fixed promise chaining behavior, the error handler doesn't handle result or cancellation handlers exceptions these exceptions are propagated to the next handlers.
fixed promise chaining behavior, the error handler doesn't handle result or cancellation handlers exceptions these exceptions are propagated to the next handlers.
cin - - Load All Authors

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r194:d45bdf510514 v2
r196:40d7fed4a09e default
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ListenerBase.cs
86 lines | 2.7 KiB | text/x-csharp | CSharpLexer
/ Implab / Diagnostics / ListenerBase.cs
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cin
Improved logging
 r134 using System;
using System.Collections.Generic;
cin
component model refactoring
 r152 using Implab.Components;
cin
Improved logging
 r134
namespace Implab.Diagnostics {
public abstract class ListenerBase : ServiceLocator, ILogWriter<object>, ILogWriter<TraceEvent> {
readonly Dictionary<object, Action> m_subscriptions = new Dictionary<object, Action>();
protected ListenerBase() {
Register(this);
}
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();
if (m_subscriptions.ContainsKey(channel))
return;
var writer = GetService<ILogWriter<TEvent>>();
EventHandler<LogEventArgs<TEvent>> handler = (sender, args) => writer.Write(args,args.Value);
channel.Events += handler;
Action unsubscribe = () => {
channel.Events -= handler;
};
m_subscriptions.Add(channel, unsubscribe);
}
}
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();
}
}
#region ILogWriter implementation
public abstract void Write(LogEventArgs args, object entry);
#endregion
#region ILogWriter implementation
public virtual void Write(LogEventArgs args, TraceEvent entry) {
Write(args, (object)entry);
}
#endregion
protected override void Dispose(bool disposing) {
base.Dispose(disposing);
if (disposing) {
UnsubscribeAll();
}
}
}
}