zulip/zilencer/lib/stripe.py

95 lines
4.0 KiB
Python

from functools import wraps
import logging
import os
from typing import Any, Callable, TypeVar
from django.conf import settings
from django.utils.translation import ugettext as _
import stripe
from zerver.lib.exceptions import JsonableError
from zerver.lib.logging_util import log_to_file
from zerver.models import Realm, UserProfile
from zilencer.models import Customer
from zproject.settings import get_secret
STRIPE_SECRET_KEY = get_secret('stripe_secret_key')
STRIPE_PUBLISHABLE_KEY = get_secret('stripe_publishable_key')
stripe.api_key = STRIPE_SECRET_KEY
BILLING_LOG_PATH = os.path.join('/var/log/zulip'
if not settings.DEVELOPMENT
else settings.DEVELOPMENT_LOG_DIRECTORY,
'billing.log')
billing_logger = logging.getLogger('zilencer.stripe')
log_to_file(billing_logger, BILLING_LOG_PATH)
log_to_file(logging.getLogger('stripe'), BILLING_LOG_PATH)
CallableT = TypeVar('CallableT', bound=Callable[..., Any])
class StripeError(JsonableError):
pass
def catch_stripe_errors(func: CallableT) -> CallableT:
@wraps(func)
def wrapped(*args: Any, **kwargs: Any) -> Any:
if STRIPE_PUBLISHABLE_KEY is None:
# Dev-only message; no translation needed.
raise StripeError(
"Missing Stripe config. In dev, add to zproject/dev-secrets.conf .")
try:
return func(*args, **kwargs)
except stripe.error.StripeError as e:
billing_logger.error("Stripe error: %d %s",
e.http_status, e.__class__.__name__)
if isinstance(e, stripe.error.CardError):
raise StripeError(e.json_body.get('error', {}).get('message'))
else:
raise StripeError(
_("Something went wrong. Please try again or email us at %s.")
% (settings.ZULIP_ADMINISTRATOR,))
except Exception as e:
billing_logger.exception("Uncaught error in Stripe integration")
raise
return wrapped # type: ignore # https://github.com/python/mypy/issues/1927
@catch_stripe_errors
def count_stripe_cards(realm: Realm) -> int:
try:
customer_obj = Customer.objects.get(realm=realm)
cards = stripe.Customer.retrieve(customer_obj.stripe_customer_id).sources.all(object="card")
return len(cards["data"])
except Customer.DoesNotExist:
return 0
@catch_stripe_errors
def save_stripe_token(user: UserProfile, token: str) -> int:
"""Returns total number of cards."""
# The card metadata doesn't show up in Dashboard but can be accessed
# using the API.
card_metadata = {"added_user_id": user.id, "added_user_email": user.email}
try:
customer_obj = Customer.objects.get(realm=user.realm)
customer = stripe.Customer.retrieve(customer_obj.stripe_customer_id)
billing_logger.info("Adding card on customer %s: source=%r, metadata=%r",
customer_obj.stripe_customer_id, token, card_metadata)
card = customer.sources.create(source=token, metadata=card_metadata)
customer.default_source = card.id
customer.save()
return len(customer.sources.list(object="card")["data"])
except Customer.DoesNotExist:
customer_metadata = {"string_id": user.realm.string_id}
# Description makes it easier to identify customers in Stripe dashboard
description = "{} ({})".format(user.realm.name, user.realm.string_id)
billing_logger.info("Creating customer: source=%r, description=%r, metadata=%r",
token, description, customer_metadata)
customer = stripe.Customer.create(source=token,
description=description,
metadata=customer_metadata)
card = customer.sources.list(object="card")["data"][0]
card.metadata = card_metadata
card.save()
Customer.objects.create(realm=user.realm, stripe_customer_id=customer.id)
return 1