I’ve always liked the Castle.Core ILogger and ILoggerFactory abstraction. I don’t know why but I’ve never been a fan of log4net so I like to keep direct dependencies to it at arm’s length.

Looking into Autofac recently, I was trying to find a way of getting a logger property assigned as a component is created from the container in the same way as Windsor‘s logging facility. The Autofac container has a Module/IModule extensibility which works well for the tasks a facility would have done.

Here’s the type of code I’m used to seeing from logging. 

using Castle.Core.Logging;

namespace LoggingStudy {
    public interface IFoo {
        void Bar();
    }

    public class Foo : IFoo {
        public Foo() {
            Logger = NullLogger.Instance;
        }

        public ILogger Logger { get; set; }

        public void Bar() {
            Logger.Info("Bar called");
        }
    }
}

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