Easy cassoulet

Name: Easy cassoulet
Ingredients: 6 duck legs; Salt and freshly ground black pepper; 6 good-quality pork sausages; 4 tablespoons olive oil or duck fat; 1 large onion, peeled and finely chopped; 2 carrots, peeled and finely chopped; 2 sticks celery, finely chopped; 4 garlic cloves, crushed; 120g smoked back bacon, roughly chopped; 2 bay leaves; 2 sprigs rosemary; 400g tin cherry tomatoes in tomato juice; 500ml chicken stock; 3 x 400g tins haricot beans in water, drained; 80g fresh breadcrumbs