def get_product_list()

in src/recommendationservice/recommendation_server.py [0:0]

• 35 lines of code
• 7 McCabe index (conditional complexity)

def get_product_list(request_product_ids):
    global first_run
    global cached_ids
    with tracer.start_as_current_span("get_product_list") as span:
        max_responses = 5

        # Formulate the list of characters to list of strings
        request_product_ids_str = ''.join(request_product_ids)
        request_product_ids = request_product_ids_str.split(',')

        # Feature flag scenario - Cache Leak
        if check_feature_flag("recommendationServiceCacheFailure"):
            span.set_attribute("app.recommendation.cache_enabled", True)
            if random.random() < 0.5 or first_run:
                first_run = False
                span.set_attribute("app.cache_hit", False)
                logger.info("get_product_list: cache miss")
                cat_response = product_catalog_stub.ListProducts(demo_pb2.Empty())
                response_ids = [x.id for x in cat_response.products]
                cached_ids = cached_ids + response_ids
                cached_ids = cached_ids + cached_ids[:len(cached_ids) // 4]
                product_ids = cached_ids
            else:
                span.set_attribute("app.cache_hit", True)
                logger.info("get_product_list: cache hit")
                product_ids = cached_ids
        else:
            span.set_attribute("app.recommendation.cache_enabled", False)
            cat_response = product_catalog_stub.ListProducts(demo_pb2.Empty())
            product_ids = [x.id for x in cat_response.products]

        span.set_attribute("app.products.count", len(product_ids))

        # Create a filtered list of products excluding the products received as input
        filtered_products = list(set(product_ids) - set(request_product_ids))
        num_products = len(filtered_products)
        span.set_attribute("app.filtered_products.count", num_products)
        num_return = min(max_responses, num_products)

        # Sample list of indicies to return
        indices = random.sample(range(num_products), num_return)
        # Fetch product ids from indices
        prod_list = [filtered_products[i] for i in indices]

        span.set_attribute("app.filtered_products.list", prod_list)

        return prod_list