354 lines
13 KiB
Python
354 lines
13 KiB
Python
import logging
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import stripe
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from django.conf import settings
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from datacenterlight.models import StripePlan
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stripe.api_key = settings.STRIPE_API_PRIVATE_KEY
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logger = logging.getLogger(__name__)
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def handleStripeError(f):
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def handleProblems(*args, **kwargs):
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response = {
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'paid': False,
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'response_object': None,
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'error': None
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}
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common_message = "Currently it's not possible to make payments."
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try:
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response_object = f(*args, **kwargs)
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response = {
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'response_object': response_object,
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'error': None
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}
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return response
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except stripe.error.CardError as e:
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# Since it's a decline, stripe.error.CardError will be caught
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body = e.json_body
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err = body['error']
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response.update({'error': err['message']})
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logger.error(str(e))
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return response
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except stripe.error.RateLimitError as e:
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response.update(
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{'error': "Too many requests made to the API too quickly"})
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return response
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except stripe.error.InvalidRequestError as e:
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logger.error(str(e))
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response.update({'error': "Invalid parameters"})
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return response
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except stripe.error.AuthenticationError as e:
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# Authentication with Stripe's API failed
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# (maybe you changed API keys recently)
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logger.error(str(e))
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response.update({'error': common_message})
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return response
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except stripe.error.APIConnectionError as e:
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logger.error(str(e))
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response.update({'error': common_message})
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return response
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except stripe.error.StripeError as e:
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# maybe send email
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logger.error(str(e))
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response.update({'error': common_message})
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return response
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except Exception as e:
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# maybe send email
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logger.error(str(e))
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response.update({'error': common_message})
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return response
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return handleProblems
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class StripeUtils(object):
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CURRENCY = 'chf'
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INTERVAL = 'month'
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SUCCEEDED_STATUS = 'succeeded'
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STRIPE_PLAN_ALREADY_EXISTS = 'Plan already exists'
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STRIPE_NO_SUCH_PLAN = 'No such plan'
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PLAN_EXISTS_ERROR_MSG = 'Plan {} exists already.\nCreating a local StripePlan now.'
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PLAN_DOES_NOT_EXIST_ERROR_MSG = 'Plan {} does not exist.'
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def __init__(self):
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self.stripe = stripe
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def update_customer_token(self, customer, token):
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customer.source = token
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customer.save()
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@handleStripeError
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def associate_customer_card(self, stripe_customer_id, token,
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set_as_default=False):
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customer = stripe.Customer.retrieve(stripe_customer_id)
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card = customer.sources.create(source=token)
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if set_as_default:
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customer.default_source = card.id
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customer.save()
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return True
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@handleStripeError
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def dissociate_customer_card(self, stripe_customer_id, card_id):
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customer = stripe.Customer.retrieve(stripe_customer_id)
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card = customer.sources.retrieve(card_id)
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card.delete()
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@handleStripeError
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def update_customer_card(self, customer_id, token):
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customer = stripe.Customer.retrieve(customer_id)
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current_card_token = customer.default_source
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customer.sources.retrieve(current_card_token).delete()
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customer.source = token
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customer.save()
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credit_card_raw_data = customer.sources.data.pop()
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new_card_data = {
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'last4': credit_card_raw_data.last4,
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'brand': credit_card_raw_data.brand
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}
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return new_card_data
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@handleStripeError
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def get_card_details(self, customer_id):
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customer = stripe.Customer.retrieve(customer_id)
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credit_card_raw_data = customer.sources.data.pop()
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card_details = {
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'last4': credit_card_raw_data.last4,
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'brand': credit_card_raw_data.brand,
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'exp_month': credit_card_raw_data.exp_month,
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'exp_year': credit_card_raw_data.exp_year,
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'fingerprint': credit_card_raw_data.fingerprint,
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'card_id': credit_card_raw_data.id
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}
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return card_details
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@handleStripeError
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def get_cards_details_from_token(self, token):
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stripe_token = stripe.Token.retrieve(token)
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card_details = {
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'last4': stripe_token.card.last4,
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'brand': stripe_token.card.brand,
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'exp_month': stripe_token.card.exp_month,
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'exp_year': stripe_token.card.exp_year,
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'fingerprint': stripe_token.card.fingerprint,
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'card_id': stripe_token.card.id
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}
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return card_details
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def check_customer(self, stripe_cus_api_id, user, token):
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try:
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customer = stripe.Customer.retrieve(stripe_cus_api_id)
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except stripe.InvalidRequestError:
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customer = self.create_customer(token, user.email, user.name)
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user.stripecustomer.stripe_id = customer.get(
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'response_object').get('id')
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user.stripecustomer.save()
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if type(customer) is dict:
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customer = customer['response_object']
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return customer
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@handleStripeError
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def get_customer(self, stripe_api_cus_id):
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customer = stripe.Customer.retrieve(stripe_api_cus_id)
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# data = customer.get('response_object')
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return customer
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@handleStripeError
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def create_customer(self, token, email, name=None):
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if name is None or name.strip() == "":
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name = email
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customer = self.stripe.Customer.create(
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source=token,
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description=name,
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email=email
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)
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return customer
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@handleStripeError
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def make_charge(self, amount=None, customer=None):
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_amount = float(amount)
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amount = int(_amount * 100) # stripe amount unit, in cents
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charge = self.stripe.Charge.create(
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amount=amount, # in cents
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currency=self.CURRENCY,
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customer=customer
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)
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return charge
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@handleStripeError
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def get_or_create_stripe_plan(self, amount, name, stripe_plan_id):
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"""
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This function checks if a StripePlan with the given
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stripe_plan_id already exists. If it exists then the function
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returns this object otherwise it creates a new StripePlan and
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returns the new object.
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:param amount: The amount in CHF
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:param name: The name of the Stripe plan to be created.
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:param stripe_plan_id: The id of the Stripe plan to be
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created. Use get_stripe_plan_id_string function to
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obtain the name of the plan to be created
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:return: The StripePlan object if it exists else creates a
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Plan object in Stripe and a local StripePlan and
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returns it. Returns None in case of Stripe error
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"""
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_amount = float(amount)
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amount = int(_amount * 100) # stripe amount unit, in cents
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stripe_plan_db_obj = None
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try:
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stripe_plan_db_obj = StripePlan.objects.get(
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stripe_plan_id=stripe_plan_id)
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except StripePlan.DoesNotExist:
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try:
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self.stripe.Plan.create(
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amount=amount,
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interval=self.INTERVAL,
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name=name,
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currency=self.CURRENCY,
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id=stripe_plan_id)
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stripe_plan_db_obj = StripePlan.objects.create(
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stripe_plan_id=stripe_plan_id)
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except stripe.error.InvalidRequestError as e:
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if self.STRIPE_PLAN_ALREADY_EXISTS in str(e):
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logger.debug(
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self.PLAN_EXISTS_ERROR_MSG.format(stripe_plan_id))
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stripe_plan_db_obj = StripePlan.objects.create(
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stripe_plan_id=stripe_plan_id)
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return stripe_plan_db_obj
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@handleStripeError
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def delete_stripe_plan(self, stripe_plan_id):
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"""
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Deletes the Plan in Stripe and also deletes the local db copy
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of the plan if it exists
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:param stripe_plan_id: The stripe plan id that needs to be
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deleted
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:return: True if the plan was deleted successfully from
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Stripe, False otherwise.
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"""
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return_value = False
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try:
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plan = self.stripe.Plan.retrieve(stripe_plan_id)
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plan.delete()
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return_value = True
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StripePlan.objects.filter(
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stripe_plan_id=stripe_plan_id).all().delete()
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except stripe.error.InvalidRequestError as e:
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if self.STRIPE_NO_SUCH_PLAN in str(e):
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logger.debug(
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self.PLAN_DOES_NOT_EXIST_ERROR_MSG.format(stripe_plan_id))
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return return_value
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@handleStripeError
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def subscribe_customer_to_plan(self, customer, plans, trial_end=None):
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"""
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Subscribes the given customer to the list of given plans
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:param customer: The stripe customer identifier
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:param plans: A list of stripe plans.
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:param trial_end: An integer representing when the Stripe subscription
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is supposed to end
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Ref: https://stripe.com/docs/api/python#create_subscription-items
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e.g.
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plans = [
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{
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"plan": "dcl-v1-cpu-2-ram-5gb-ssd-10gb",
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},
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]
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:return: The subscription StripeObject
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"""
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subscription_result = self.stripe.Subscription.create(
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customer=customer, items=plans, trial_end=trial_end
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)
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return subscription_result
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@handleStripeError
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def set_subscription_metadata(self, subscription_id, metadata):
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subscription = stripe.Subscription.retrieve(subscription_id)
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subscription.metadata = metadata
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subscription.save()
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@handleStripeError
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def unsubscribe_customer(self, subscription_id):
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"""
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Cancels a given subscription
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:param subscription_id: The Stripe subscription id string
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:return:
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"""
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sub = stripe.Subscription.retrieve(subscription_id)
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return sub.delete()
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@handleStripeError
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def make_payment(self, customer, amount, token):
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charge = self.stripe.Charge.create(
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amount=amount, # in cents
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currency=self.CURRENCY,
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customer=customer
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)
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return charge
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@staticmethod
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def get_stripe_plan_id(cpu, ram, ssd, version, app='dcl', hdd=None,
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price=None):
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"""
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Returns the Stripe plan id string of the form
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`dcl-v1-cpu-2-ram-5gb-ssd-10gb` based on the input parameters
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:param cpu: The number of cores
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:param ram: The size of the RAM in GB
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:param ssd: The size of ssd storage in GB
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:param hdd: The size of hdd storage in GB
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:param version: The version of the Stripe plans
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:param app: The application to which the stripe plan belongs
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to. By default it is 'dcl'
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:param price: The price for this plan
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:return: A string of the form `dcl-v1-cpu-2-ram-5gb-ssd-10gb`
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"""
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dcl_plan_string = 'cpu-{cpu}-ram-{ram}gb-ssd-{ssd}gb'.format(cpu=cpu,
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ram=ram,
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ssd=ssd)
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if hdd is not None:
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dcl_plan_string = '{dcl_plan_string}-hdd-{hdd}gb'.format(
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dcl_plan_string=dcl_plan_string, hdd=hdd)
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stripe_plan_id_string = '{app}-v{version}-{plan}'.format(
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app=app,
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version=version,
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plan=dcl_plan_string
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)
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if price is not None:
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stripe_plan_id_string_with_price = '{}-{}chf'.format(
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stripe_plan_id_string,
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round(price, 2)
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)
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return stripe_plan_id_string_with_price
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else:
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return stripe_plan_id_string
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@staticmethod
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def get_stripe_plan_name(cpu, memory, disk_size, price):
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"""
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Returns the Stripe plan name
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:return:
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"""
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return "{cpu} Cores, {memory} GB RAM, {disk_size} GB SSD, " \
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"{price} CHF".format(
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cpu=cpu,
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memory=memory,
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disk_size=disk_size,
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price=round(price, 2)
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)
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@handleStripeError
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def set_subscription_meta_data(self, subscription_id, meta_data):
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"""
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Adds VM metadata to a subscription
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:param subscription_id: Stripe identifier for the subscription
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:param meta_data: A dict of meta data to be added
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:return:
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"""
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subscription = stripe.Subscription.retrieve(subscription_id)
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subscription.metadata = meta_data
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subscription.save()
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