Sample of running AppEngine inside the Web Role (for Lokad.CQRS v2.0)

WebRole.cs

// Sample of running AppEngine inside the Web Role, essentially merging
// 1 worker role and 1 web role (for Lokad.CQRS v2.0)
// For explanation see: http://abdullin.com/journal/2011/7/6/lokadcqrs-can-make-windows-azure-cheaper-for-you.html
public class WebRole : RoleEntryPoint
{
    CqrsEngineHost _host;
    readonly CancellationTokenSource _source = new CancellationTokenSource();

    public override bool OnStart()
    {
        ServicePointManager.DefaultConnectionLimit = 48;
        RoleEnvironment.Changing += RoleEnvironmentChanging;

        _host = BuildBusForWorker.Configure().Build();

        return base.OnStart();
    }

    public override void Run()
    {
        var task = _host.Start(_source.Token);
        task.Wait()
    }

    public override void OnStop()
    {
        _source.Cancel();
        base.OnStop();
    }

    private static void RoleEnvironmentChanging(object sender, RoleEnvironmentChangingEventArgs e)
    {
        // If a configuration setting is changing
        if (e.Changes.Any(change => change is RoleEnvironmentConfigurationSettingChange))
        {
            // Set e.Cancel to true to restart this role instance
            e.Cancel = true;
        }
    }
}