Not able to register ILogger with the decorater pattern

[arpit2408]

Hi @khellang trying to register my ILogger service like this:-

Method 1:

1: services.AddLogging();
2: services.Decorate<Extensions.Logging.ILogger, ExtensionsLoggerDecorator>();

It gives the following error at line 2:-

Method 2:

1: services.AddLogging();
2: services.AddSingleton<Extensions.Logging.ILogger, Extensions.Logging.ILogger>();
3: services.Decorate<Extensions.Logging.ILogger, ExtensionsLoggerDecorator>();

It passes to line 3 but gives the following error at hostBuilder.build()

Here is the definition of the ExtensionsLoggerDecorator class

public class ExtensionsLoggerDecorator : ILogger {
    // All interface classes implemented
}

I have installed the latest version https://www.nuget.org/packages/Scrutor and using .NET 6. I am trying to accomplish a wrapper/decorator for my ILogging implementation so that all logs pass through my custom class before getting logged by openTelemetry.

Please tell me what I am doing wrong here or is it a bug?

[arpit2408]

I have looked at the answers here dotnet/runtime#36021 but didn't help.

[arpit2408]

The compile time error is resolved if I use the decorator like below:-

services.AddLogging();
services.Decorate(typeof(ILogger), typeof(ExtensionsLoggerDecorator));

But now the decorator function isn't called when I call _logger.logInformation and instead extensions.logger is called.