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Revamp stripe error handling

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This commit is contained in:
fnux 2020-03-05 11:03:47 +01:00
parent 4e658d2d77
commit 80fe28588e
4 changed files with 104 additions and 63 deletions
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37
uncloud/uncloud_pay/models.py
View file

@ -139,35 +139,40 @@ class PaymentMethod(models.Model):
return False
def charge(self, amount):
if amount > 0: # Make sure we don't charge negative amount by errors...
if self.source == 'stripe':
stripe_customer = StripeCustomer.objects.get(owner=self.owner).stripe_id
charge_request = uncloud_pay.stripe.charge_customer(
amount, stripe_customer, self.stripe_payment_method_id)
if charge_request['error'] == None:
payment = Payment(owner=self.owner, source=self.source, amount=amount)
payment.save() # TODO: Check return status
if not self.active:
raise Exception('This payment method is inactive.')
return payment
else:
raise Exception('Stripe error: {}'.format(charge_request['error']))
else:
raise Exception('This payment method is unsupported/cannot be charged.')
else:
if amount > 0: # Make sure we don't charge negative amount by errors...
raise Exception('Cannot charge negative amount.')
if self.source == 'stripe':
stripe_customer = StripeCustomer.objects.get(owner=self.owner).stripe_id
stripe_payment = uncloud_pay.stripe.charge_customer(
amount, stripe_customer, self.stripe_payment_method_id)
if stripe_payment['paid']:
payment = Payment(owner=self.owner, source=self.source, amount=amount)
payment.save() # TODO: Check return status
return payment
else:
raise Exception(stripe_payment['error'])
else:
raise Exception('This payment method is unsupported/cannot be charged.')
def get_primary_for(user):
methods = PaymentMethod.objects.filter(owner=user)
for method in methods:
# Do we want to do something with non-primary method?
if method.primary:
if method.active and method.primary:
return method
return None
class Meta:
#API_keyunique_together = [['owner', 'primary']]
# TODO: limit to one primary method per user.
# unique_together is no good since it won't allow more than one
# non-primary method.
pass
###

46
uncloud/uncloud_pay/stripe.py
View file

@ -17,6 +17,7 @@ CURRENCY = 'chf'
stripe.api_key = uncloud.secrets.STRIPE_KEY
# Helper (decorator) used to catch errors raised by stripe logic.
# Catch errors that should not be displayed to the end user, raise again.
def handle_stripe_error(f):
def handle_problems(*args, **kwargs):
response = {
@ -25,49 +26,38 @@ def handle_stripe_error(f):
'error': None
}
common_message = "Currently it is not possible to make payments."
common_message = "Currently it is not possible to make payments. Please try agin later."
try:
response_object = f(*args, **kwargs)
response = {
'response_object': response_object,
'error': None
}
return response
return response_object
except stripe.error.CardError as e:
# Since it's a decline, stripe.error.CardError will be caught
body = e.json_body
err = body['error']
response.update({'error': err['message']})
logging.error(str(e))
return response
raise e # For error handling.
except stripe.error.RateLimitError:
response.update(
{'error': "Too many requests made to the API too quickly"})
return response
logging.error("Too many requests made to the API too quickly.")
raise Exception(common_message)
except stripe.error.InvalidRequestError as e:
logging.error(str(e))
response.update({'error': "Invalid parameters"})
return response
raise Exception('Invalid parameters.')
except stripe.error.AuthenticationError as e:
# Authentication with Stripe's API failed
# (maybe you changed API keys recently)
logging.error(str(e))
response.update({'error': common_message})
return response
raise Exception(common_message)
except stripe.error.APIConnectionError as e:
logging.error(str(e))
response.update({'error': common_message})
return response
raise Exception(common_message)
except stripe.error.StripeError as e:
# maybe send email
# XXX: maybe send email
logging.error(str(e))
response.update({'error': common_message})
return response
raise Exception(common_message)
except Exception as e:
# maybe send email
logging.error(str(e))
response.update({'error': common_message})
return response
raise Exception(common_message)
return handle_problems
@ -82,14 +72,14 @@ def get_customer_id_for(user):
return uncloud_pay.models.StripeCustomer.objects.get(owner=user).stripe_id
except ObjectDoesNotExist:
# No entry yet - making a new one.
customer_request = create_customer(user.username, user.email)
if customer_request['error'] == None:
mapping = uncloud_pay.models.StripeCustomer.objects.create(
try:
customer = create_customer(user.username, user.email)
uncloud_stripe_mapping = uncloud_pay.models.StripeCustomer.objects.create(
owner=user,
stripe_id=customer_request['response_object']['id']
)
return mapping.stripe_id
else:
return uncloud_stripe_mapping.stripe_id
except Exception as e:
return None
@handle_stripe_error

18
uncloud/uncloud_pay/templates/error.html.j2 Normal file
View file

@ -0,0 +1,18 @@
<!DOCTYPE html>
<html>
<head>
<title>Error</title>
<style>
#content {
width: 400px;
margin: auto;
}
</style>
</head>
<body>
<div id="content">
<h1>Error</h1>
<p>{{ error }}</p>
</div>
</body>
</html>

66
uncloud/uncloud_pay/views.py
View file

@ -58,25 +58,28 @@ class PaymentMethodViewSet(viewsets.ModelViewSet):
if serializer.validated_data['source'] == "stripe":
# Retrieve Stripe customer ID for user.
customer_id = uncloud_stripe.get_customer_id_for(request.user)
customer_id = uncloud_stripe.get_customer_id_for(request.user)
if customer_id == None:
return Response(
{'error': 'Could not resolve customer stripe ID.'},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
# TODO: handle error
setup_intent = uncloud_stripe.create_setup_intent(customer_id)
try:
setup_intent = uncloud_stripe.create_setup_intent(customer_id)
except Exception as e:
return Response({'error': str(e)},
status=status.HTTP_500_INTERNAL_SERVER_ERROR)
payment_method = PaymentMethod.objects.create(
owner=request.user,
stripe_setup_intent_id=setup_intent['response_object']['id'],
stripe_setup_intent_id=setup_intent.id,
**serializer.validated_data)
# TODO: find a way to use reverse properly:
# https://www.django-rest-framework.org/api-guide/reverse/
query= "payment-method/{}/register-stripe-cc".format(
payment_method.uuid
)
stripe_registration_url = reverse('api-root', request=request) + query
path = "payment-method/{}/register-stripe-cc".format(
payment_method.uuid)
stripe_registration_url = reverse('api-root', request=request) + path
return Response({'please_visit': stripe_registration_url})
return Response(serializer.data)
@ -97,26 +100,51 @@ class PaymentMethodViewSet(viewsets.ModelViewSet):
@action(detail=True, methods=['get'], url_path='register-stripe-cc', renderer_classes=[TemplateHTMLRenderer])
def register_stripe_cc(self, request, pk=None):
payment_method = self.get_object()
setup_intent = uncloud_stripe.get_setup_intent(
payment_method.stripe_setup_intent_id)
if payment_method.source != 'stripe':
return Response(
{'error': 'This is not a Stripe-based payment method.'},
template_name='error.html.j2')
if payment_method.active:
return Response(
{'error': 'This payment method is already active'},
template_name='error.html.j2')
try:
setup_intent = uncloud_stripe.get_setup_intent(
payment_method.stripe_setup_intent_id)
except Exception as e:
return Response(
{'error': str(e)},
template_name='error.html.j2')
# TODO: find a way to use reverse properly:
# https://www.django-rest-framework.org/api-guide/reverse/
callback_path= "payment-method/{}/activate-stripe-cc/".format(
payment_method.uuid)
callback = reverse('api-root', request=request) + callback_path
# Render stripe card registration form.
template_args = {
'client_secret': setup_intent["response_object"]["client_secret"],
'stripe_pk': uncloud_stripe.public_api_key
'client_secret': setup_intent.client_secret,
'stripe_pk': uncloud_stripe.public_api_key,
'callback': callback
}
return Response(template_args, template_name='stripe-payment.html.j2')
@action(detail=True, methods=['post'], url_path='register-stripe-cc')
def register_stripe_cc(self, request, pk=None):
@action(detail=True, methods=['post'], url_path='activate-stripe-cc')
def activate_stripe_cc(self, request, pk=None):
payment_method = self.get_object()
setup_intent = uncloud_stripe.get_setup_intent(
payment_method.stripe_setup_intent_id)
try:
setup_intent = uncloud_stripe.get_setup_intent(
payment_method.stripe_setup_intent_id)
except Exception as e:
return Response({'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
# Card had been registered, fetching payment method.
payment_method_id = setup_intent["response_object"].payment_method
if payment_method_id:
payment_method.stripe_payment_method_id = payment_method_id
print(setup_intent)
if setup_intent.payment_method:
payment_method.stripe_payment_method_id = setup_intent.payment_method
payment_method.save()
return Response({