dynamicweb/webhook/views.py

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import datetime
import logging
import json
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import stripe
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# Create your views here.
from django.conf import settings
from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt
from django.views.decorators.http import require_POST
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from datacenterlight.views import do_provisioning, do_provisioning_generic
from membership.models import StripeCustomer
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from hosting.models import IncompleteSubscriptions, IncompletePaymentIntents
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from utils.models import BillingAddress, UserBillingAddress
from utils.tasks import send_plain_email_task
logger = logging.getLogger(__name__)
# Things to do for webhooks feature
# 1. Uninstall old version and install a more recent version of stripe
# ```
# source venv/bin/activate
# ./manage.py shell
# pip uninstall stripe
# pip install stripe==2.24.1
# ```
# 2. Create tax id updated webhook
# ```
# ./manage.py webhook --create \
# --webhook_endpoint https://datacenterlight.ch/en-us/webhooks/ \
# --events_csv customer.tax_id.updated
# ```
#
# 3. From the secret obtained in 2, setup an environment variable
# ```
# WEBHOOK_SECRET='whsec......'
# ```
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@require_POST
@csrf_exempt
def handle_webhook(request):
payload = request.body
event = None
try:
if 'HTTP_STRIPE_SIGNATURE' in request.META:
sig_header = request.META['HTTP_STRIPE_SIGNATURE']
else:
logger.error("No HTTP_STRIPE_SIGNATURE header")
# Invalid payload
return HttpResponse(status=400)
event = stripe.Webhook.construct_event(
payload, sig_header, settings.WEBHOOK_SECRET
)
except ValueError as e:
# Invalid payload
err_msg = "FAILURE handle_invoice_webhook: Invalid payload details"
err_body = "Details %s" % str(e)
return handle_error(err_msg, err_body)
except stripe.error.SignatureVerificationError as e:
# Invalid signature
err_msg = "FAILURE handle_invoice_webhook: SignatureVerificationError"
err_body = "Details %s" % str(e)
return handle_error(err_msg, err_body)
# Do something with event
logger.debug("Passed signature verification")
if event.type == "customer.tax_id.updated":
logger.debug("Webhook Event: customer.tax_id.updated")
tax_id_obj = event.data.object
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logger.debug("Tax_id %s is %s" % (tax_id_obj.id,
tax_id_obj.verification.status))
stripe_customer = None
try:
stripe_customer = StripeCustomer.objects.get(stripe_id=tax_id_obj.customer)
except StripeCustomer.DoesNotExist as dne:
logger.debug(
"StripeCustomer %s does not exist" % tax_id_obj.customer)
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if tax_id_obj.verification.status == "verified":
b_addresses = BillingAddress.objects.filter(stripe_tax_id=tax_id_obj.id)
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for b_address in b_addresses:
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b_address.vat_validation_status = tax_id_obj.verification.status
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b_address.vat_number_validated_on = datetime.datetime.now()
b_address.save()
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ub_addresses = UserBillingAddress.objects.filter(stripe_tax_id=tax_id_obj.id)
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for ub_address in ub_addresses:
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ub_address.vat_validation_status = tax_id_obj.verification.status
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ub_address.vat_number_validated_on = datetime.datetime.now()
ub_address.save()
email_data = {
'subject': "The VAT %s associated with %s was verified" %
(tax_id_obj.value, stripe_customer.user.email if stripe_customer else "unknown"),
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': settings.DCL_ERROR_EMAILS_TO_LIST,
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'body': "The following objects were modified:\n".join(
'\n'.join([str(b_address) for b_address in b_addresses])
).join(
'\n'.join([str(ub_address) for ub_address in ub_addresses])
),
}
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else:
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logger.debug("Tax_id %s is %s" % (tax_id_obj.id,
tax_id_obj.verification.status))
email_data = {
'subject': "The VAT %s associated with %s was %s" %
(tax_id_obj.value, stripe_customer.user.email if stripe_customer else "unknown", tax_id_obj.verification.status),
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': settings.DCL_ERROR_EMAILS_TO_LIST,
'body': "Response = %s" % str(tax_id_obj),
}
send_plain_email_task.delay(email_data)
elif event.type == 'invoice.paid':
#More info: https://stripe.com/docs/billing/migration/strong-customer-authentication#scenario-1-handling-fulfillment
invoice_obj = event.data.object
logger.debug("Webhook Event: invoice.paid")
logger.debug("invoice_obj %s " % str(invoice_obj))
logger.debug("invoice_obj.paid = %s %s" % (invoice_obj.paid, type(invoice_obj.paid)))
logger.debug("invoice_obj.billing_reason = %s %s" % (invoice_obj.billing_reason, type(invoice_obj.billing_reason)))
# We should check for billing_reason == "subscription_create" but we
# check for "subscription_update"
# because we are using older api.
# See https://stripe.com/docs/upgrades?since=2015-07-13
# The billing_reason attribute of the invoice object now can take the
# value of subscription_create, indicating that it is the first
# invoice of a subscription. For older API versions,
# billing_reason=subscription_create is represented as
# subscription_update.
if (invoice_obj.paid and
invoice_obj.billing_reason == "subscription_update"):
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logger.debug("""invoice_obj.paid and
invoice_obj.billing_reason == subscription_update""")
logger.debug("Start provisioning")
try:
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stripe_subscription_obj = stripe.Subscription.retrieve(
invoice_obj.subscription)
try:
incomplete_sub = IncompleteSubscriptions.objects.get(
subscription_id=invoice_obj.subscription)
request = ""
soc = ""
card_details_response = ""
gp_details = ""
template = ""
specs = ""
billing_address_data = ""
if incomplete_sub.request:
request = json.loads(incomplete_sub.request)
if incomplete_sub.specs:
specs = json.loads(incomplete_sub.specs)
if incomplete_sub.stripe_onetime_charge:
soc = json.loads(incomplete_sub.stripe_onetime_charge)
if incomplete_sub.gp_details:
gp_details = json.loads(incomplete_sub.gp_details)
if incomplete_sub.card_details_response:
card_details_response = json.loads(
incomplete_sub.card_details_response)
if incomplete_sub.template:
template = json.loads(
incomplete_sub.template)
if incomplete_sub.billing_address_data:
billing_address_data = json.loads(
incomplete_sub.billing_address_data)
logger.debug("*******")
logger.debug(str(incomplete_sub))
logger.debug("*******")
logger.debug("1*******")
logger.debug(request)
logger.debug("2*******")
logger.debug(card_details_response)
logger.debug("3*******")
logger.debug(soc)
logger.debug("4*******")
logger.debug(gp_details)
logger.debug("5*******")
logger.debug(template)
logger.debug("6*******")
do_provisioning(
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request=request,
stripe_api_cus_id=incomplete_sub.stripe_api_cus_id,
card_details_response=card_details_response,
stripe_subscription_obj=stripe_subscription_obj,
stripe_onetime_charge=soc,
gp_details=gp_details,
specs=specs,
vm_template_id=incomplete_sub.vm_template_id,
template=template,
billing_address_data=billing_address_data,
real_request=None
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)
except (IncompleteSubscriptions.DoesNotExist,
IncompleteSubscriptions.MultipleObjectsReturned) as ex:
logger.error(str(ex))
email_data = {
'subject': "IncompleteSubscriptions error",
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': settings.DCL_ERROR_EMAILS_TO_LIST,
'body': "Response = %s" % str(ex),
}
send_plain_email_task.delay(email_data)
except Exception as ex:
logger.error(str(ex))
email_data = {
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'subject': "invoice.paid Webhook error",
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': settings.DCL_ERROR_EMAILS_TO_LIST,
'body': "Response = %s" % str(ex),
}
send_plain_email_task.delay(email_data)
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elif event.type == 'invoice.payment_failed':
invoice_obj = event.data.object
logger.debug("Webhook Event: invoice.payment_failed")
logger.debug("invoice_obj %s " % str(invoice_obj))
if (invoice_obj.payment_failed and
invoice_obj.billing_reason == "subscription_update"):
logger.debug("Payment failed, inform the users")
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elif event.type == 'payment_intent.succeeded':
payment_intent_obj = event.data.object
logger.debug("Webhook Event: payment_intent.succeeded")
logger.debug("payment_intent_obj %s " % str(payment_intent_obj))
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try:
incomplete_pm = IncompletePaymentIntents.objects.get(
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payment_intent_id=payment_intent_obj.id)
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request = ""
soc = ""
card_details_response = ""
gp_details = ""
template = ""
billing_address_data = ""
if incomplete_pm.request:
request = json.loads(incomplete_pm.request)
if incomplete_pm.stripe_onetime_charge:
soc = json.loads(incomplete_pm.stripe_onetime_charge)
if incomplete_pm.gp_details:
gp_details = json.loads(incomplete_pm.gp_details)
if incomplete_pm.card_details_response:
card_details_response = json.loads(
incomplete_pm.card_details_response)
if incomplete_pm.billing_address_data:
billing_address_data = json.loads(
incomplete_pm.billing_address_data)
logger.debug("1*******")
logger.debug(request)
logger.debug("2*******")
logger.debug(card_details_response)
logger.debug("3*******")
logger.debug(soc)
logger.debug("4*******")
logger.debug(gp_details)
logger.debug("5*******")
logger.debug(template)
logger.debug("6*******")
logger.debug(billing_address_data)
do_provisioning_generic(
request=request,
stripe_api_cus_id=incomplete_pm.stripe_api_cus_id,
card_details_response=card_details_response,
stripe_subscription_id=None,
stripe_charge_id=soc,
gp_details=gp_details,
billing_address_data=billing_address_data
)
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incomplete_pm.completed_at = datetime.datetime.now()
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charges = ""
if len(payment_intent_obj.charges.data) > 0:
for d in payment_intent_obj.charges.data:
if charges == "":
charges = "%s" % d.id
else:
charges = "%s,%s" % (charges, d.id)
incomplete_pm.stripe_charge_id=charges
incomplete_pm.save()
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except (IncompletePaymentIntents.DoesNotExist,
IncompletePaymentIntents.MultipleObjectsReturned) as ex:
logger.error(str(ex))
email_data = {
'subject': "IncompletePaymentIntents error",
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': settings.DCL_ERROR_EMAILS_TO_LIST,
'body': "Response = %s" % str(ex),
}
send_plain_email_task.delay(email_data)
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else:
logger.error("Unhandled event : " + event.type)
return HttpResponse(status=200)
def handle_error(error_msg, error_body):
logger.error("%s -- %s" % (error_msg, error_body))
email_to_admin_data = {
'subject': error_msg,
'from_email': settings.DCL_SUPPORT_FROM_ADDRESS,
'to': [settings.ADMIN_EMAIL],
'body': error_body,
}
send_plain_email_task.delay(email_to_admin_data)
return HttpResponse(status=400)