Autofac.log4net is a library that allows easy integration of log4net with the Autofac IoC container. It contains a Log4NetModule to support injection of ILog properties and constructor parameter to instances created through the Autofac container. The library now supports .net core (which is awesome!).

• Supports .NET 4 and above.
• The package has 2 package dependencies:
  • log4net >= 2.0.3
  • Autofac >= 3.0.0

• If a class has a property or constructor parameter of type ILog, it will inject it with a logger.
  • The logger instance will be by default the logger with the class type name.
  • If the type/namespace of the class is mapped in the module, the logger instance will be the mapped logger.
• There are 2 type of mappings the Log4NetModule:
  1. Mapping by types.
  2. Mapping by namespaces - when injecting the logger, the most specific namespace mapping will be used.
• The module allows configuring the application to a custom logger configuration file and watching it.

MIT License

public class InjectableClass {
    private readonly ILog _logger;
    
    public InjectableClass(ILog logger){
        _logger = logger;
    }
}

public class InjectableClass {
    public ILog Logger { get; set; }
}

var builder = new ContainerBuilder();
builder.RegisterModule<Log4NetModule>();

var builder = new ContainerBuilder();
var loggingModule =
    new Log4NetModule()
    {
        ConfigFileName = "logger.config",
        ShouldWatchConfiguration = true
    };
builder.RegisterModule(loggingModule);

var builder = new ContainerBuilder();
var loggingModule = new Log4NetModule();
loggingModule.MapTypeToLoggerName(typeof(InjectableClass), "Logger1");
loggingModule.MapNamespaceToLoggerName("Autofac.log4net", "Logger2");
builder.RegisterModule(loggingModule);