Pasta salad with meatballs and curry sauce

400 g chipolata or sausages ((I used chicken sausages)) 350 g pasta 1/2 cucumber 1 pepper 3 spring onions 100 g peas ((frozen)) 20 g chives (finely chopped) 20 g parsley (finely chopped) Salt and pepper 1.5 tbsp neutral oil 1/2 tsp curry powder 150 g Greek yoghurt 2 tbsp mayonnaise