def create_product(product_id=None,product_name=None):
if product_id is None or len(product_id) <= 3:
product_id = random_key(10)
existing_products = Product.query(Product.product_id == product_id).fetch(1)
if len(existing_products) != 0:
import logging
logging.error('Product with ID "' + product_id + '" already exists.' )
return make_error(400,'A product with ID ' + product_id + ' already exists, overwriting is forbidden.')
product = Product(product_id=product_id)
if product_name is not None:
product.product_name = product_name
product.put()
return product.product_id
