Hangfire.Autofac

Hangfire background job activator based on Autofac IoC Container. It allows you to use instance methods of classes that define parametrized constructors:

public class EmailService
{
	private DbContext _context;
    private IEmailSender _sender;
	
	public EmailService(DbContext context, IEmailSender sender)
	{
		_context = context;
		_sender = sender;
	}
	
	public void Send(int userId, string message)
	{
		var user = _context.Users.Get(userId);
		_sender.Send(user.Email, message);
	}
}	

// Somewhere in the code
BackgroundJob.Enqueue<EmailService>(x => x.Send(1, "Hello, world!"));

Improve the testability of your jobs without static factories!

Installation

Hangfire.Autofac is available as a NuGet Package. Type the following command into NuGet Package Manager Console window to install it:

Install-Package Hangfire.Autofac

Usage

The package provides an extension method for OWIN bootstrapper:

app.UseHangfire(config =>
{
    var builder = new ContainerBuilder();
    config.UseAutofacActivator(builder.Build());
});

In order to use the library outside of web application, set the static JobActivator.Current property:

var builder = new ContainerBuilder();
JobActivator.Current = new AutofacJobActivator(builder.Build());

HTTP Request warnings

Services registered with InstancePerHttpRequest() directive will be unavailable during job activation, you should re-register these services without this hint.

HttpContext.Current is also not available during the job performance. Don't use it!