using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var articleMetricsService = new ArticleMetricsService(new MyErrorDecorator<AltmetricsServicePoC>(new AltmetricsServicePoC()));

        articleMetricsService.Get();

    }

}

​

public class ArticleMetricsService

{

    private readonly MyDecorator<AltmetricsServicePoC> _altmetricsService;

    public ArticleMetricsService(MyDecorator<AltmetricsServicePoC> altmetricsService)

    {

        _altmetricsService = altmetricsService;

    }

    public object Get()

    {

        var result = _altmetricsService.Execute(x => x.GetScoreWithException(true));

        Console.WriteLine(result.Result);

        Console.WriteLine(result.Exception?.ToString());

        //other examples

        //result = _altmetricsService.Execute(x => x.GetNumber(3));

        //Console.WriteLine(result.Result);

        //Console.WriteLine(result.Exception?.ToString());

        //result = _altmetricsService.Execute(x => x.GetDefaultString());

        //Console.WriteLine(result.Result);

        //Console.WriteLine(result.Exception?.ToString());

        //result = _altmetricsService.Execute(x => x.GetScoreWithException(false));

        //Console.WriteLine(result.Result);

        //Console.WriteLine(result.Exception?.ToString());

        //metricsFactory.create(...)

        return "whatever";

    }

}

​

public class AltmetricsServicePoC

{

    public int GetNumber(int x)

    {

        return x+1;

    }

    public string GetDefaultString()

    {

        return "whaaat";

    }

    public int GetScoreWithException(bool shouldThrowException)

    {

        if (shouldThrowException)

            throw new Exception("some exception");

        else

            return 123;

    }

}

​

public class ResultWithException

{

    public object Result { get; set; }

    public Exception Exception { get; set; }

}

​

public class MyDecorator<T>

{

    private readonly T _decorated;

    public MyDecorator(T decorated)

    {

        _decorated = decorated;

    }

    public ResultWithException Execute(Func<T, dynamic> action /* we could pass default values here, or how to handle exceptions (or this could be setup in the constructor*/)

    {

        try

        {

            var result = action(_decorated);

            return new ResultWithException

            {

                Result = result,

                Exception = null

            };

        }

        catch (Exception ex)

        {

            return new ResultWithException

            {

                Result = null,

                Exception = ex

            };

        }

    }

}