public void OnNext(DiagnosticListener value)
{
var subscribedAny = false;
if (_listener != null)
{
if (value.Name == _listener.Name)
{
var listenerType = _listener.GetType();
if (_agent is null || _agent.SubscribedListeners.Add(listenerType) || _listener.AllowDuplicates)
{
_sourceSubscription = new SubscribedListenerDisposable(value.Subscribe(_listener), () => _agent.SubscribedListeners.Remove(listenerType));
_logger.Debug()
?.Log("Subscribed {DiagnosticListenerType} to `{DiagnosticListenerName}' events source",
listenerType.FullName, value.Name);
subscribedAny = true;
}
else
{
_logger.Debug()?.Log("{DiagnosticListenerType} already subscribed to `{DiagnosticListenerName}' events source",
listenerType.FullName, value.Name);
}
}
}
public void OnNext(DiagnosticListener value)
{
var subscribedAny = false;
if (_listener != null)
{
if (value.Name == _listener.Name)
{
_sourceSubscription = value.Subscribe(_listener);
_logger.Debug()
?.Log("Subscribed {DiagnosticListenerType} to `{DiagnosticListenerName}' events source",
_listener.GetType().FullName, value.Name);
subscribedAny = true;
}
}
else
{
foreach (var listener in _listeners)
{
if (value.Name == listener.Name)
{
_sourceSubscription = value.Subscribe(listener);
_logger.Debug()
?.Log("Subscribed {DiagnosticListenerType} to `{DiagnosticListenerName}' events source",
listener.GetType().FullName, value.Name);
subscribedAny = true;
}
}
}
if (!subscribedAny)
{
var listenerTypes = _listener != null
? _listener.GetType().FullName
: string.Join(", ", _listeners.Select(listener => listener.GetType().FullName));
_logger.Trace()
?.Log(
"There are no listeners in the current batch ({DiagnosticListeners}) that would like to subscribe to `{DiagnosticListenerName}' events source",
listenerTypes,
value.Name);
}
}
private static TResult DispatchToImpl <TResult>(
IDiagnosticListener listener,
Func <HttpDiagnosticListenerCoreImpl, TResult> coreImplFunc,
Func <HttpDiagnosticListenerFullFrameworkImpl, TResult> fullFrameworkImplFunc
)
{
switch (listener)
{
case HttpDiagnosticListenerCoreImpl impl:
return(coreImplFunc(impl));
case HttpDiagnosticListenerFullFrameworkImpl impl:
return(fullFrameworkImplFunc(impl));
default:
throw new AssertionFailedException($"Unrecognized {nameof(HttpDiagnosticListener)} implementation - {listener.GetType()}");
}
}
