private static TraceSource GetTraceSourceWithListeners_Locked(string name, SourceLevels sourceLevels)
{
string[] parts = name.Split(new char[] { '.' }, StringSplitOptions.None);
List<string> namesToTest = new List<string>();
StringBuilder sb = new StringBuilder();
foreach (var part in parts)
{
if (sb.Length > 0)
sb.Append(".");
sb.Append(part);
string partialName = sb.ToString();
namesToTest.Add(partialName);
}
namesToTest.Reverse();
foreach (var testName in namesToTest)
{
TraceSource ts = null;
ts = new TraceSource(testName, sourceLevels);
// no listeners? skip
if (ts.Listeners == null || ts.Listeners.Count == 0)
{
ts.Close();
continue;
}
// more than one listener? use this TraceSource
if (ts.Listeners.Count > 1)
return ts;
TraceListener listener = ts.Listeners[0];
// single listener isn't DefaultTraceListener? use this TraceRoute
if (!(listener is DefaultTraceListener))
return ts;
// single listener is DefaultTraceListener but isn't named Default? use this TraceRoute
if (!string.Equals(listener.Name, "Default", StringComparison.Ordinal))
return ts;
// not the TraceSource we're looking for, close it
ts.Close();
}
// nothing found? no listeners are configured for any of the names, even the original,
// so return null to signify failure
return null;
}
