Better Workaround for AppFabric Cache’s Tracing Hatred

As a follow up from my last post, here’s a simple extension method to forcibly restore the default trace listener every time you invoke an AppFabric Caching Administration Management cmdlet. It’s not the prettiest code, but it’s functional:

	public static class PowershellExtensions
	{
	public static Collection<PSObject> InvokeCommandAndRestoreDefaultTraceListener(this Pipeline pipeline)
	{
	bool hasDefaultTraceListener = PowershellExtensions.IsDefaultTraceListenerPresent();
	Collection<PSObject> results = pipeline.Invoke();
	if(hasDefaultTraceListener && !PowershellExtensions.IsDefaultTraceListenerPresent())
	{
	Trace.Listeners.Add(new DefaultTraceListener());
	}
	return results;
	}
	private static bool IsDefaultTraceListenerPresent()
	{
	foreach(TraceListener listener in Trace.Listeners)
	{
	if(listener is DefaultTraceListener)
	{
	return true;
	}
	}
	return false;
	}
	}

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AppFabricTracingWorkaround.cs
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