public IDisposable UseTracer(ITracer tracer)
{
// Locking might not be necessary due to being AsyncLocal
var previousTracers = this.Tracer.Value.Tracers.ToArray();
var newTracers = new List <ITracer>(previousTracers.Length + 1);
newTracers.AddRange(previousTracers);
newTracers.Add(tracer);
this.Tracer.Value = CompositeTracerFactory.Create(newTracers);
var expectedLastTracer = tracer;
return(Disposable.Create(
() =>
{
var currentTracers = this.Tracer.Value.Tracers.ToArray();
var lastTracer = currentTracers.Last();
if (lastTracer != expectedLastTracer)
{
throw new InvalidOperationException(
"Logic bug, trying to remove a tracer other than the one added. Check your Disposes.");
}
var newTracersCount = currentTracers.Length - 1;
var newTracers2 = new ITracer[newTracersCount];
Array.Copy(currentTracers, 0, newTracers2, 0, newTracersCount);
this.Tracer.Value = CompositeTracerFactory.Create(newTracers2);
}));
}
public MutableTracer(ITracer tracerImplementation)
{
this.Tracer.Value = CompositeTracerFactory.Create(new[] { tracerImplementation });
}
