InnerException type comparison in ExceptionSummarizer ignores BaseType

[KalleOlaviNiemitalo]

In Microsoft.Extensions.Diagnostics.ExceptionSummarization, ExceptionSummarizer.Summarize first searches for an IExceptionSummaryProvider registered for the exception type or a base type of that. For example, a provider registered for COMException can be used for DirectoryServicesCOMException as well.

If that did not find an IExceptionSummaryProvider, but there is an InnerException, then ExceptionSummarizer.Summarize checks for a provider registered for the type of the inner exception. Here though, it checks only the exact type and does not follow the Type.BaseType chain. Is that by design?

extensions/src/Libraries/Microsoft.Extensions.Diagnostics.ExceptionSummarization/ExceptionSummarizer.cs

Lines 50 to 61 in 042cc42

	// Let's see if we get lucky with the inner exception
	if (exception.InnerException != null)
	{
	var innerExceptionType = exception.InnerException.GetType();
	if (_exceptionTypesToProviders.TryGetValue(innerExceptionType, out var innerExceptionSummaryProvider))
	{
	return BuildSummary(
	exception.InnerException,
	innerExceptionSummaryProvider,
	$"{exceptionTypeName}->{innerExceptionType.Name}");
	}
	}

Related to issue #4004 and pull request #4370.