Merge remote-tracking branch 'origin/fnux-stable'

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>
This commit is contained in:
Nico Schottelius 2020-03-03 11:23:29 +01:00
commit a50095f873
49 changed files with 1340 additions and 116 deletions

View File

@ -14,4 +14,7 @@ LDAP_ADMIN_DN=""
LDAP_ADMIN_PASSWORD=""
LDAP_SERVER_URI = ""
# Stripe (Credit Card payments)
STRIPE_API_key=""
SECRET_KEY="dx$iqt=lc&yrp^!z5$ay^%g5lhx1y3bcu=jg(jx0yj0ogkfqvf"

View File

@ -62,7 +62,9 @@ INSTALLED_APPS = [
'rest_framework',
'uncloud_pay',
'uncloud_auth',
'uncloud_storage',
'uncloud_vm',
'ungleich_service',
'opennebula'
]
@ -174,3 +176,8 @@ USE_TZ = True
STATIC_URL = '/static/'
stripe.api_key = uncloud.secrets.STRIPE_KEY
############
# Stripe
STRIPE_API_KEY = uncloud.secrets.STRIPE_API_KEY

View File

@ -20,11 +20,12 @@ from rest_framework import routers
from uncloud_vm import views as vmviews
from uncloud_pay import views as payviews
from ungleich_service import views as serviceviews
from opennebula import views as oneviews
router = routers.DefaultRouter()
# user / regular urls
# VM
router.register(r'vm/snapshot', vmviews.VMSnapshotProductViewSet, basename='vmsnapshotproduct')
router.register(r'vm/disk', vmviews.VMDiskProductViewSet, basename='vmdiskproduct')
router.register(r'vm/image/mine', vmviews.VMDiskImageProductMineViewSet, basename='vmdiskimagemineproduct')
@ -38,6 +39,7 @@ router.register(r'vm/image/public', vmviews.VMDiskImageProductPublicViewSet, bas
router.register(r'vm/vm', vmviews.VMProductViewSet, basename='vmproduct')
# TBD
#router.register(r'vm/disk', vmviews.VMDiskProductViewSet, basename='vmdiskproduct')
@ -49,11 +51,20 @@ router.register(r'vm/vm', vmviews.VMProductViewSet, basename='vmproduct')
# allow vm creation from own images
# Services
router.register(r'service/matrix', serviceviews.MatrixServiceProductViewSet, basename='matrixserviceproduct')
# Pay
router.register(r'user', payviews.UserViewSet, basename='user')
router.register(r'payment-method', payviews.PaymentMethodViewSet, basename='payment-method')
router.register(r'bill', payviews.BillViewSet, basename='bill')
router.register(r'order', payviews.OrderViewSet, basename='order')
router.register(r'payment', payviews.PaymentViewSet, basename='payment')
router.register(r'payment-method', payviews.PaymentMethodViewSet, basename='payment-methods')
# VMs
router.register(r'vm/vm', vmviews.VMProductViewSet, basename='vm')
# admin/staff urls
router.register(r'admin/bill', payviews.AdminBillViewSet, basename='admin/bill')
@ -61,7 +72,7 @@ router.register(r'admin/payment', payviews.AdminPaymentViewSet, basename='admin/
router.register(r'admin/order', payviews.AdminOrderViewSet, basename='admin/order')
router.register(r'admin/vmhost', vmviews.VMHostViewSet)
router.register(r'admin/opennebula', oneviews.VMViewSet, basename='opennebula')
router.register(r'admin/opennebula_raw', oneviews.RawVMViewSet)
router.register(r'admin/opennebula_raw', oneviews.RawVMViewSet, basename='opennebula_raw')
urlpatterns = [

View File

@ -0,0 +1,96 @@
from functools import reduce
from datetime import datetime
from rest_framework import mixins
from rest_framework.viewsets import GenericViewSet
from django.db.models import Q
from .models import Bill, Payment, PaymentMethod, Order
from django.utils import timezone
from django.core.exceptions import ObjectDoesNotExist
from calendar import monthrange
def get_balance_for(user):
bills = reduce(
lambda acc, entry: acc + entry.total,
Bill.objects.filter(owner=user),
0)
payments = reduce(
lambda acc, entry: acc + entry.amount,
Payment.objects.filter(owner=user),
0)
return payments - bills
def get_payment_method_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:
return method
return None
def beginning_of_month(year, month):
tz = timezone.get_current_timezone()
return datetime(year=year, month=month, day=1, tzinfo=tz)
def end_of_month(year, month):
(_, days) = monthrange(year, month)
tz = timezone.get_current_timezone()
return datetime(year=year, month=month, day=days,
hour=23, minute=59, second=59, tzinfo=tz)
def generate_bills_for(year, month, user, allowed_delay):
# /!\ We exclusively work on the specified year and month.
# Default values for next bill (if any). Only saved at the end of
# this method, if relevant.
next_bill = Bill(owner=user,
starting_date=beginning_of_month(year, month),
ending_date=end_of_month(year, month),
creation_date=timezone.now(),
due_date=timezone.now() + allowed_delay)
# Select all orders active on the request period.
orders = Order.objects.filter(
Q(ending_date__gt=next_bill.starting_date) | Q(ending_date__isnull=True),
owner=user)
# Check if there is already a bill covering the order and period pair:
# * Get latest bill by ending_date: previous_bill.ending_date
# * If previous_bill.ending_date is before next_bill.ending_date, a new
# bill has to be generated.
unpaid_orders = []
for order in orders:
try:
previous_bill = order.bill.latest('ending_date')
except ObjectDoesNotExist:
previous_bill = None
if previous_bill == None or previous_bill.ending_date < next_bill.ending_date:
unpaid_orders.append(order)
# Commit next_bill if it there are 'unpaid' orders.
if len(unpaid_orders) > 0:
next_bill.save()
# It is not possible to register many-to-many relationship before
# the two end-objects are saved in database.
for order in unpaid_orders:
order.bill.add(next_bill)
# TODO: use logger.
print("Generated bill {} (amount: {}) for user {}."
.format(next_bill.uuid, next_bill.total, user))
return next_bill
# Return None if no bill was created.
class ProductViewSet(mixins.CreateModelMixin,
mixins.RetrieveModelMixin,
mixins.ListModelMixin,
GenericViewSet):
"""
A customer-facing viewset that provides default `create()`, `retrieve()`
and `list()`.
"""
pass

View File

@ -0,0 +1,32 @@
from django.core.management.base import BaseCommand
from uncloud_auth.models import User
from uncloud_pay.models import Order, Bill
from uncloud_pay.helpers import get_balance_for, get_payment_method_for
from datetime import timedelta
from django.utils import timezone
class Command(BaseCommand):
help = 'Generate bills and charge customers if necessary.'
def add_arguments(self, parser):
pass
def handle(self, *args, **options):
users = User.objects.all()
print("Processing {} users.".format(users.count()))
for user in users:
balance = get_balance_for(user)
if balance < 0:
print("User {} has negative balance ({}), charging.".format(user.username, balance))
payment_method = get_payment_method_for(user)
if payment_method != None:
amount_to_be_charged = abs(balance)
charge_ok = payment_method.charge(amount_to_be_charged)
if not charge_ok:
print("ERR: charging {} with method {} failed"
.format(user.username, payment_method.uuid)
)
else:
print("ERR: no payment method registered for {}".format(user.username))
print("=> Done.")

View File

@ -0,0 +1,38 @@
import logging
from django.core.management.base import BaseCommand
from uncloud_auth.models import User
from uncloud_pay.models import Order, Bill
from django.core.exceptions import ObjectDoesNotExist
from datetime import timedelta, date
from django.utils import timezone
from uncloud_pay.helpers import generate_bills_for
BILL_PAYMENT_DELAY=timedelta(days=10)
logger = logging.getLogger(__name__)
class Command(BaseCommand):
help = 'Generate bills and charge customers if necessary.'
def add_arguments(self, parser):
pass
# TODO: use logger.*
def handle(self, *args, **options):
# Iterate over all 'active' users.
# TODO: filter out inactive users.
users = User.objects.all()
print("Processing {} users.".format(users.count()))
for user in users:
now = timezone.now()
generate_bills_for(
year=now.year,
month=now.month,
user=user,
allowed_delay=BILL_PAYMENT_DELAY)
# We're done for this round :-)
print("=> Done.")

View File

@ -0,0 +1,43 @@
from django.core.management.base import BaseCommand
from uncloud_auth.models import User
from uncloud_pay.models import Order, Bill
from uncloud_pay.helpers import get_balance_for, get_payment_method_for
from datetime import timedelta
from django.utils import timezone
class Command(BaseCommand):
help = 'Generate bills and charge customers if necessary.'
def add_arguments(self, parser):
pass
def handle(self, *args, **options):
users = User.objects.all()
print("Processing {} users.".format(users.count()))
for user in users:
balance = get_balance_for(user)
if balance < 0:
print("User {} has negative balance ({}), checking for overdue bills."
.format(user.username, balance))
# Get bills DESCENDING by creation date (= latest at top).
bills = Bill.objects.filter(
owner=user,
due_date__lt=timezone.now()
).order_by('-creation_date')
overdue_balance = abs(balance)
overdue_bills = []
for bill in bills:
if overdue_balance < 0:
break # XXX: I'm (fnux) not fond of breaks!
overdue_balance -= bill.amount
overdue_bills.append(bill)
for bill in overdue_bills:
print("/!\ Overdue bill for {}, {} with amount {}"
.format(user.username, bill.uuid, bill.amount))
# TODO: take action?
print("=> Done.")

View File

@ -0,0 +1,32 @@
# Generated by Django 3.0.3 on 2020-02-27 14:04
from django.conf import settings
from django.db import migrations, models
import django.db.models.deletion
import uuid
class Migration(migrations.Migration):
dependencies = [
migrations.swappable_dependency(settings.AUTH_USER_MODEL),
('uncloud_pay', '0001_initial'),
]
operations = [
migrations.AlterField(
model_name='payment',
name='source',
field=models.CharField(choices=[('wire', 'Wire Transfer'), ('stripe', 'Stripe'), ('voucher', 'Voucher'), ('referral', 'Referral'), ('unknown', 'Unknown')], default='unknown', max_length=256),
),
migrations.CreateModel(
name='PaymentMethod',
fields=[
('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
('source', models.CharField(choices=[('stripe', 'Stripe'), ('unknown', 'Unknown')], default='stripe', max_length=256)),
('description', models.TextField()),
('default', models.BooleanField()),
('owner', models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
],
),
]

View File

@ -0,0 +1,28 @@
# Generated by Django 3.0.3 on 2020-02-27 14:14
from django.conf import settings
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
migrations.swappable_dependency(settings.AUTH_USER_MODEL),
('uncloud_pay', '0002_auto_20200227_1404'),
]
operations = [
migrations.AddField(
model_name='paymentmethod',
name='primary',
field=models.BooleanField(default=True),
),
migrations.AlterUniqueTogether(
name='paymentmethod',
unique_together={('owner', 'primary')},
),
migrations.RemoveField(
model_name='paymentmethod',
name='default',
),
]

View File

@ -0,0 +1,31 @@
# Generated by Django 3.0.3 on 2020-02-27 15:32
from django.conf import settings
from django.db import migrations, models
import django.db.models.deletion
class Migration(migrations.Migration):
dependencies = [
migrations.swappable_dependency(settings.AUTH_USER_MODEL),
('uncloud_pay', '0003_auto_20200227_1414'),
]
operations = [
migrations.AlterField(
model_name='bill',
name='owner',
field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
),
migrations.AlterField(
model_name='order',
name='recurring_period',
field=models.CharField(choices=[('ONCE', 'Onetime'), ('YEAR', 'Per Year'), ('MONTH', 'Per Month'), ('MINUTE', 'Per Minute'), ('DAY', 'Per Day'), ('HOUR', 'Per Hour'), ('SECOND', 'Per Second')], default='MONTH', max_length=32),
),
migrations.AlterField(
model_name='payment',
name='owner',
field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL),
),
]

View File

@ -0,0 +1,42 @@
# Generated by Django 3.0.3 on 2020-02-28 07:37
from django.db import migrations, models
import uuid
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0004_auto_20200227_1532'),
]
operations = [
migrations.RemoveField(
model_name='bill',
name='id',
),
migrations.RemoveField(
model_name='bill',
name='paid',
),
migrations.AddField(
model_name='bill',
name='uuid',
field=models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False),
),
migrations.AlterField(
model_name='bill',
name='creation_date',
field=models.DateTimeField(auto_now_add=True),
),
migrations.AlterField(
model_name='order',
name='creation_date',
field=models.DateTimeField(auto_now_add=True),
),
migrations.AlterField(
model_name='order',
name='starting_date',
field=models.DateTimeField(auto_now_add=True),
),
]

View File

@ -0,0 +1,18 @@
# Generated by Django 3.0.3 on 2020-02-28 07:41
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0005_auto_20200228_0737'),
]
operations = [
migrations.AlterField(
model_name='order',
name='bill',
field=models.ManyToManyField(blank=True, editable=False, to='uncloud_pay.Bill'),
),
]

View File

@ -0,0 +1,17 @@
# Generated by Django 3.0.3 on 2020-02-28 07:44
from django.db import migrations
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0006_auto_20200228_0741'),
]
operations = [
migrations.RemoveField(
model_name='order',
name='bill',
),
]

View File

@ -0,0 +1,18 @@
# Generated by Django 3.0.3 on 2020-02-28 07:44
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0007_remove_order_bill'),
]
operations = [
migrations.AddField(
model_name='order',
name='bill',
field=models.ManyToManyField(blank=True, editable=False, to='uncloud_pay.Bill'),
),
]

View File

@ -0,0 +1,29 @@
# Generated by Django 3.0.3 on 2020-02-28 08:25
import django.core.validators
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0008_order_bill'),
]
operations = [
migrations.AlterField(
model_name='order',
name='one_time_price',
field=models.DecimalField(decimal_places=2, editable=False, max_digits=10, validators=[django.core.validators.MinValueValidator(0)]),
),
migrations.AlterField(
model_name='order',
name='recurring_price',
field=models.DecimalField(decimal_places=2, editable=False, max_digits=10, validators=[django.core.validators.MinValueValidator(0)]),
),
migrations.AlterField(
model_name='payment',
name='timestamp',
field=models.DateTimeField(auto_now_add=True),
),
]

View File

@ -0,0 +1,14 @@
# Generated by Django 3.0.3 on 2020-02-28 13:03
from django.db import migrations
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0002_auto_20200227_1230'),
('uncloud_pay', '0009_auto_20200228_0825'),
]
operations = [
]

View File

@ -0,0 +1,21 @@
# Generated by Django 3.0.3 on 2020-02-29 14:59
from django.db import migrations
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0010_merge_20200228_1303'),
]
operations = [
migrations.RemoveField(
model_name='order',
name='one_time_price',
),
migrations.RemoveField(
model_name='order',
name='recurring_price',
),
]

View File

@ -0,0 +1,25 @@
# Generated by Django 3.0.3 on 2020-03-01 16:04
import django.core.validators
from django.db import migrations, models
import django.db.models.deletion
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0011_auto_20200229_1459'),
]
operations = [
migrations.CreateModel(
name='OrderRecord',
fields=[
('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
('setup_fee', models.DecimalField(decimal_places=2, default=0.0, max_digits=10, validators=[django.core.validators.MinValueValidator(0)])),
('recurring_price', models.DecimalField(decimal_places=2, default=0.0, max_digits=10, validators=[django.core.validators.MinValueValidator(0)])),
('description', models.TextField()),
('order', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='uncloud_pay.Order')),
],
),
]

View File

@ -0,0 +1,18 @@
# Generated by Django 3.0.3 on 2020-03-02 20:14
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0012_orderrecord'),
]
operations = [
migrations.AddField(
model_name='paymentmethod',
name='stripe_card_id',
field=models.CharField(blank=True, max_length=32, null=True),
),
]

View File

@ -1,81 +1,37 @@
from django.db import models
from functools import reduce
from django.contrib.auth import get_user_model
from django.core.validators import MinValueValidator
from django.utils.translation import gettext_lazy as _
from django.utils import timezone
from math import ceil
from datetime import timedelta
from calendar import monthrange
import uuid
# Define DecimalField properties, used to represent amounts of money.
AMOUNT_MAX_DIGITS=10
AMOUNT_DECIMALS=2
class Bill(models.Model):
owner = models.ForeignKey(get_user_model(),
on_delete=models.CASCADE,
editable=False)
creation_date = models.DateTimeField()
starting_date = models.DateTimeField()
ending_date = models.DateTimeField()
due_date = models.DateField()
paid = models.BooleanField(default=False)
valid = models.BooleanField(default=True)
@property
def amount(self):
# iterate over all related orders
pass
class Order(models.Model):
uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
owner = models.ForeignKey(get_user_model(),
on_delete=models.CASCADE,
editable=False)
creation_date = models.DateTimeField()
starting_date = models.DateTimeField()
ending_date = models.DateTimeField(blank=True,
null=True)
bill = models.ManyToManyField(Bill,
editable=False,
blank=True,
null=True)
recurring_price = models.FloatField(editable=False)
one_time_price = models.FloatField(editable=False)
recurring_period = models.CharField(max_length=32,
choices = (
('onetime', 'Onetime'),
('per_year', 'Per Year'),
('per_month', 'Per Month'),
('per_week', 'Per Week'),
('per_day', 'Per Day'),
('per_hour', 'Per Hour'),
('per_minute', 'Per Minute'),
('per_second', 'Per Second'),
),
default='onetime'
)
# def amount(self):
# amount = recurring_price
# if recurring and first_month:
# amount += one_time_price
# return amount # you get the picture
# See https://docs.djangoproject.com/en/dev/ref/models/fields/#field-choices-enum-types
class RecurringPeriod(models.TextChoices):
ONE_TIME = 'ONCE', _('Onetime')
PER_YEAR = 'YEAR', _('Per Year')
PER_MONTH = 'MONTH', _('Per Month')
PER_MINUTE = 'MINUTE', _('Per Minute')
PER_DAY = 'DAY', _('Per Day')
PER_HOUR = 'HOUR', _('Per Hour')
PER_SECOND = 'SECOND', _('Per Second')
###
# Payments and Payment Methods.
class Payment(models.Model):
uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
owner = models.ForeignKey(get_user_model(),
on_delete=models.CASCADE,
editable=False)
on_delete=models.CASCADE)
amount = models.DecimalField(
default=0.0,
@ -92,11 +48,226 @@ class Payment(models.Model):
('unknown', 'Unknown')
),
default='unknown')
timestamp = models.DateTimeField(editable=False)
timestamp = models.DateTimeField(editable=False, auto_now_add=True)
class PaymentMethod(models.Model):
uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
owner = models.ForeignKey(get_user_model(),
on_delete=models.CASCADE,
editable=False)
source = models.CharField(max_length=256,
choices = (
('stripe', 'Stripe'),
('unknown', 'Unknown'),
),
default='stripe')
description = models.TextField()
primary = models.BooleanField(default=True)
# Only used for "Stripe" source
stripe_card_id = models.CharField(max_length=32, blank=True, null=True)
def charge(self, amount):
if amount > 0: # Make sure we don't charge negative amount by errors...
if self.source == 'stripe':
# TODO: wire to stripe, see meooow-payv1/strip_utils.py
payment = Payment(owner=self.owner, source=self.source, amount=amount)
payment.save() # TODO: Check return status
return True
else:
# We do not handle that source yet.
return False
else:
return False
class Meta:
unique_together = [['owner', 'primary']]
###
# Bills & Payments.
class Bill(models.Model):
uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
owner = models.ForeignKey(get_user_model(),
on_delete=models.CASCADE)
creation_date = models.DateTimeField(auto_now_add=True)
starting_date = models.DateTimeField()
ending_date = models.DateTimeField()
due_date = models.DateField()
valid = models.BooleanField(default=True)
@property
def records(self):
bill_records = []
orders = Order.objects.filter(bill=self)
for order in orders:
for order_record in order.records:
bill_record = BillRecord(self, order_record)
bill_records.append(bill_record)
return bill_records
@property
def total(self):
return reduce(lambda acc, record: acc + record.amount(), self.records, 0)
@property
def final(self):
# A bill is final when its ending date is passed.
return self.ending_date < timezone.now()
class BillRecord():
"""
Entry of a bill, dynamically generated from order records.
"""
def __init__(self, bill, order_record):
self.bill = bill
self.order = order_record.order
self.setup_fee = order_record.setup_fee
self.recurring_price = order_record.recurring_price
self.recurring_period = order_record.recurring_period
self.description = order_record.description
def amount(self):
# Compute billing delta.
billed_until = self.bill.ending_date
if self.order.ending_date != None and self.order.ending_date < self.order.ending_date:
billed_until = self.order.ending_date
billed_from = self.bill.starting_date
if self.order.starting_date > self.bill.starting_date:
billed_from = self.order.starting_date
if billed_from > billed_until:
# TODO: think about and check edges cases. This should not be
# possible.
raise Exception('Impossible billing delta!')
billed_delta = billed_until - billed_from
# TODO: refactor this thing?
# TODO: weekly
# TODO: yearly
if self.recurring_period == RecurringPeriod.PER_MONTH:
days = ceil(billed_delta / timedelta(days=1))
# XXX: we assume monthly bills for now.
if (self.bill.starting_date.year != self.bill.starting_date.year or
self.bill.starting_date.month != self.bill.ending_date.month):
raise Exception('Bill {} covers more than one month. Cannot bill PER_MONTH.'.
format(self.bill.uuid))
# XXX: minumal length of monthly order is to be enforced somewhere else.
(_, days_in_month) = monthrange(
self.bill.starting_date.year,
self.bill.starting_date.month)
adjusted_recurring_price = self.recurring_price / days_in_month
recurring_price = adjusted_recurring_price * days
return self.recurring_price # TODO
elif self.recurring_period == RecurringPeriod.PER_DAY:
days = ceil(billed_delta / timedelta(days=1))
return self.recurring_price * days
elif self.recurring_period == RecurringPeriod.PER_HOUR:
hours = ceil(billed_delta / timedelta(hours=1))
return self.recurring_price * hours
elif self.recurring_period == RecurringPeriod.PER_SECOND:
seconds = ceil(billed_delta / timedelta(seconds=1))
return self.recurring_price * seconds
else:
raise Exception('Unsupported recurring period: {}.'.
format(record.recurring_period))
###
# Orders.
# /!\ BIG FAT WARNING /!\ #
#
# Order are assumed IMMUTABLE and used as SOURCE OF TRUST for generating
# bills. Do **NOT** mutate then!
#
# Why? We need to store the state somewhere since product are mutable (e.g.
# adding RAM to VM, changing price of 1GB of RAM, ...). An alternative could
# have been to only store the state in bills but would have been more
# confusing: the order is a 'contract' with the customer, were both parts
# agree on deal => That's what we want to keep archived.
#
# /!\ BIG FAT WARNING /!\ #
class Order(models.Model):
uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
owner = models.ForeignKey(get_user_model(),
on_delete=models.CASCADE,
editable=False)
# TODO: enforce ending_date - starting_date to be larger than recurring_period.
creation_date = models.DateTimeField(auto_now_add=True)
starting_date = models.DateTimeField(auto_now_add=True)
ending_date = models.DateTimeField(blank=True,
null=True)
bill = models.ManyToManyField(Bill,
editable=False,
blank=True)
recurring_period = models.CharField(max_length=32,
choices = RecurringPeriod.choices,
default = RecurringPeriod.PER_MONTH)
@property
def records(self):
return OrderRecord.objects.filter(order=self)
@property
def setup_fee(self):
return reduce(lambda acc, record: acc + record.setup_fee, self.records, 0)
@property
def recurring_price(self):
return reduce(lambda acc, record: acc + record.recurring_price, self.records, 0)
def add_record(self, setup_fee, recurring_price, description):
OrderRecord.objects.create(order=self,
setup_fee=setup_fee,
recurring_price=recurring_price,
description=description)
class OrderRecord(models.Model):
order = models.ForeignKey(Order, on_delete=models.CASCADE)
setup_fee = models.DecimalField(default=0.0,
max_digits=AMOUNT_MAX_DIGITS,
decimal_places=AMOUNT_DECIMALS,
validators=[MinValueValidator(0)])
recurring_price = models.DecimalField(default=0.0,
max_digits=AMOUNT_MAX_DIGITS,
decimal_places=AMOUNT_DECIMALS,
validators=[MinValueValidator(0)])
description = models.TextField()
@property
def recurring_period(self):
return self.order.recurring_period
@property
def starting_date(self):
return self.order.starting_date
@property
def ending_date(self):
return self.order.ending_date
###
# Products
# Abstract (= no database representation) class used as parent for products
# (e.g. uncloud_vm.models.VMProduct).
class Product(models.Model):
uuid = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
owner = models.ForeignKey(get_user_model(),
@ -117,7 +288,24 @@ class Product(models.Model):
order = models.ForeignKey(Order,
on_delete=models.CASCADE,
editable=False)
editable=False,
null=True)
@property
def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
pass # To be implemented in child.
@property
def setup_fee(self):
return 0
@property
def recurring_period(self):
return self.order.recurring_period
@staticmethod
def allowed_recurring_periods():
return RecurringPeriod.choices
class Meta:
abstract = True

View File

@ -1,27 +1,125 @@
from django.contrib.auth import get_user_model
from rest_framework import serializers
from .models import Bill, Payment, Order
from .models import *
from .helpers import get_balance_for
class BillSerializer(serializers.ModelSerializer):
from functools import reduce
from uncloud_vm.serializers import VMProductSerializer
from uncloud_vm.models import VMProduct
import uncloud_pay.stripe as stripe
###
# Users.
class UserSerializer(serializers.ModelSerializer):
class Meta:
model = Bill
fields = ['owner', 'amount', 'due_date', 'creation_date',
'starting_date', 'ending_date', 'paid']
model = get_user_model()
fields = ['username', 'email', 'balance']
# Display current 'balance'
balance = serializers.SerializerMethodField('get_balance')
def __sum_balance(self, entries):
return reduce(lambda acc, entry: acc + entry.amount, entries, 0)
def get_balance(self, user):
return get_balance_for(user)
###
# Payments and Payment Methods.
class PaymentSerializer(serializers.ModelSerializer):
class Meta:
model = Payment
fields = ['owner', 'amount', 'source', 'timestamp']
class PaymentMethodSerializer(serializers.ModelSerializer):
class Meta:
model = PaymentMethod
fields = ['source', 'description', 'primary']
class CreditCardSerializer(serializers.Serializer):
number = serializers.IntegerField()
exp_month = serializers.IntegerField()
exp_year = serializers.IntegerField()
cvc = serializers.IntegerField()
class CreatePaymentMethodSerializer(serializers.ModelSerializer):
credit_card = CreditCardSerializer()
class Meta:
model = PaymentMethod
fields = ['source', 'description', 'primary', 'credit_card']
def create(self, validated_data):
credit_card = stripe.CreditCard(**validated_data.pop('credit_card'))
user = self.context['request'].user
customer = stripe.create_customer(user.username, user.email)
# TODO check customer error
customer_id = customer['response_object']['id']
stripe_card = stripe.create_card(customer_id, credit_card)
# TODO: check credit card error
validated_data['stripe_card_id'] = stripe_card['response_object']['id']
class CreditCardSerializer(serializers.Serializer):
number = serializers.IntegerField()
exp_month = serializers.IntegerField()
exp_year = serializers.IntegerField()
cvc = serializers.IntegerField()
class CreatePaymentMethodSerializer(serializers.ModelSerializer):
credit_card = CreditCardSerializer()
class Meta:
model = PaymentMethod
fields = ['source', 'description', 'primary', 'credit_card']
def create(self, validated_data):
credit_card = stripe.CreditCard(**validated_data.pop('credit_card'))
user = self.context['request'].user
customer = stripe.create_customer(user.username, user.email)
# TODO check customer error
customer_id = customer['response_object']['id']
stripe_card = stripe.create_card(customer_id, credit_card)
# TODO: check credit card error
validated_data['stripe_card_id'] = stripe_card['response_object']['id']
payment_method = PaymentMethod.objects.create(**validated_data)
return payment_method
payment_method = PaymentMethod.objects.create(**validated_data)
return payment_method
###
# Bills
# TODO: remove magic numbers for decimal fields
class BillRecordSerializer(serializers.Serializer):
order = serializers.CharField()
description = serializers.CharField()
recurring_period = serializers.CharField()
recurring_price = serializers.DecimalField(max_digits=10, decimal_places=2)
amount = serializers.DecimalField(max_digits=10, decimal_places=2)
class BillSerializer(serializers.ModelSerializer):
records = BillRecordSerializer(many=True, read_only=True)
class Meta:
model = Bill
fields = ['owner', 'total', 'due_date', 'creation_date',
'starting_date', 'ending_date', 'records', 'final']
###
# Orders & Products.
class OrderRecordSerializer(serializers.ModelSerializer):
class Meta:
model = OrderRecord
fields = ['setup_fee', 'recurring_price', 'description']
class OrderSerializer(serializers.ModelSerializer):
records = OrderRecordSerializer(many=True, read_only=True)
class Meta:
model = Order
fields = '__all__'
fields = ['uuid', 'creation_date', 'starting_date', 'ending_date',
'bill', 'recurring_period', 'records', 'recurring_price', 'setup_fee']
class UserSerializer(serializers.ModelSerializer):
class Meta:
model = get_user_model()
fields = ['username', 'email']
def get_balance(self, obj):
return 666
class ProductSerializer(serializers.Serializer):
vms = VMProductSerializer(many=True, read_only=True)

View File

@ -1,5 +1,16 @@
import stripe
import stripe.error
import logging
from django.conf import settings
# Static stripe configuration used below.
CURRENCY = 'chf'
# Register stripe (secret) API key from config.
stripe.api_key = settings.STRIPE_API_KEY
# Helper (decorator) used to catch errors raised by stripe logic.
def handle_stripe_error(f):
def handle_problems(*args, **kwargs):
response = {
@ -53,3 +64,51 @@ def handle_stripe_error(f):
return response
return handle_problems
# Convenience CC container, also used for serialization.
class CreditCard():
number = None
exp_year = None
exp_month = None
cvc = None
def __init__(self, number, exp_month, exp_year, cvc):
self.number=number
self.exp_year = exp_year
self.exp_month = exp_month
self.cvc = cvc
# Actual Stripe logic.
@handle_stripe_error
def create_card(customer_id, credit_card):
# Test settings
credit_card.number = "5555555555554444"
return stripe.Customer.create_source(
customer_id,
card={
'number': credit_card.number,
'exp_month': credit_card.exp_month,
'exp_year': credit_card.exp_year,
'cvc': credit_card.cvc
})
@handle_stripe_error
def get_card(customer_id, card_id):
return stripe.Card.retrieve_source(customer_id, card_id)
@handle_stripe_error
def charge_customer(amount, source):
return stripe.Charge.create(
amount=amount,
currenty=CURRENCY,
source=source)
@handle_stripe_error
def create_customer(name, email):
return stripe.Customer.create(name=name, email=email)
@handle_stripe_error
def get_customer(customer_id):
return stripe.Customer.retrieve(customer_id)

View File

@ -4,8 +4,10 @@ from rest_framework import viewsets, permissions, status
from rest_framework.response import Response
from rest_framework.decorators import action
from .models import Bill, Payment, Order
from .serializers import BillSerializer, PaymentSerializer, UserSerializer, OrderSerializer
import json
from .models import *
from .serializers import *
from datetime import datetime
###
@ -54,9 +56,39 @@ class UserViewSet(viewsets.ReadOnlyModelViewSet):
def get_queryset(self):
return get_user_model().objects.all()
@action(detail=True)
def balance(self, request):
return Response(status=status.HTTP_204_NO_CONTENT)
class PaymentMethodViewSet(viewsets.ModelViewSet):
permission_classes = [permissions.IsAuthenticated]
def get_serializer_class(self):
if self.action == 'create':
return CreatePaymentMethodSerializer
else:
return PaymentMethodSerializer
def get_queryset(self):
return PaymentMethod.objects.filter(owner=self.request.user)
def create(self, request):
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
serializer.save(owner=request.user)
headers = self.get_success_headers(serializer.data)
return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
# TODO: find a way to customize serializer for actions.
# drf-action-serializer module seems to do that.
@action(detail=True, methods=['post'])
def charge(self, request, pk=None):
payment_method = self.get_object()
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
amount = serializer.data['amount']
if payment_method.charge(amount):
return Response({'charged', amount})
else:
return Response(status=status.HTTP_500_INTERNAL_ERROR)
###
# Admin views.
@ -89,7 +121,7 @@ class AdminBillViewSet(viewsets.ModelViewSet):
def create(self, request):
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
serializer.save(created_at=datetime.now())
serializer.save(creation_date=datetime.now())
headers = self.get_success_headers(serializer.data)
return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)

View File

View File

@ -0,0 +1,3 @@
from django.contrib import admin
# Register your models here.

View File

@ -0,0 +1,5 @@
from django.apps import AppConfig
class UncloudStorageConfig(AppConfig):
name = 'uncloud_storage'

View File

@ -0,0 +1,3 @@
from django.db import models
# Create your models here.

View File

@ -0,0 +1,3 @@
from django.test import TestCase
# Create your tests here.

View File

@ -0,0 +1,3 @@
from django.shortcuts import render
# Create your views here.

View File

@ -16,17 +16,6 @@ class Migration(migrations.Migration):
model_name='vmsnapshotproduct',
name='vm_uuid',
),
migrations.AddField(
model_name='vmproduct',
name='order',
field=models.ForeignKey(default=0, editable=False, on_delete=django.db.models.deletion.CASCADE, to='uncloud_pay.Order'),
preserve_default=False,
),
migrations.AddField(
model_name='vmproduct',
name='status',
field=models.CharField(choices=[('pending', 'Pending'), ('being_created', 'Being created'), ('active', 'Active'), ('deleted', 'Deleted')], default='pending', max_length=256),
),
migrations.AddField(
model_name='vmsnapshotproduct',
name='vm',

View File

@ -0,0 +1,25 @@
# Generated by Django 3.0.3 on 2020-02-27 15:32
from django.db import migrations, models
import django.db.models.deletion
class Migration(migrations.Migration):
dependencies = [
('uncloud_pay', '0004_auto_20200227_1532'),
('uncloud_vm', '0004_vmsnapshotproduct'),
]
operations = [
migrations.AddField(
model_name='vmproduct',
name='order',
field=models.ForeignKey(editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_pay.Order'),
),
migrations.AlterField(
model_name='vmsnapshotproduct',
name='order',
field=models.ForeignKey(editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_pay.Order'),
),
]

View File

@ -0,0 +1,14 @@
# Generated by Django 3.0.3 on 2020-02-28 13:03
from django.db import migrations
class Migration(migrations.Migration):
dependencies = [
('uncloud_vm', '0005_auto_20200227_1532'),
('uncloud_vm', '0005_auto_20200227_1230'),
]
operations = [
]

View File

@ -0,0 +1,23 @@
# Generated by Django 3.0.3 on 2020-02-28 13:44
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('uncloud_vm', '0006_merge_20200228_1303'),
]
operations = [
migrations.AddField(
model_name='vmnetworkcard',
name='ip_address',
field=models.GenericIPAddressField(blank=True, null=True),
),
migrations.AddField(
model_name='vmproduct',
name='status',
field=models.CharField(choices=[('pending', 'Pending'), ('being_created', 'Being created'), ('active', 'Active'), ('deleted', 'Deleted')], default='pending', max_length=256),
),
]

View File

@ -0,0 +1,18 @@
# Generated by Django 3.0.3 on 2020-02-28 14:05
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('uncloud_vm', '0007_auto_20200228_1344'),
]
operations = [
migrations.AddField(
model_name='vmproduct',
name='name',
field=models.CharField(blank=True, max_length=32),
),
]

View File

@ -0,0 +1,18 @@
# Generated by Django 3.0.3 on 2020-02-28 14:16
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('uncloud_vm', '0008_vmproduct_name'),
]
operations = [
migrations.AlterField(
model_name='vmproduct',
name='name',
field=models.CharField(max_length=32),
),
]

View File

@ -6,7 +6,8 @@ from django.contrib.auth import get_user_model
# Uncomment if you override model's clean method
# from django.core.exceptions import ValidationError
from uncloud_pay.models import Product
from uncloud_pay.models import Product, RecurringPeriod
import uncloud_pay.models as pay_models
STATUS_CHOICES = (
('pending', 'Pending'), # Initial state
@ -45,9 +46,31 @@ class VMProduct(Product):
VMHost, on_delete=models.CASCADE, editable=False, blank=True, null=True
)
# VM-specific. The name is only intended for customers: it's a pain te
# remember IDs (speaking from experience as ungleich customer)!
name = models.CharField(max_length=32)
cores = models.IntegerField()
ram_in_gb = models.FloatField()
def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
# TODO: move magic numbers in variables
if recurring_period == RecurringPeriod.PER_MONTH:
return self.cores * 3 + self.ram_in_gb * 2
elif recurring_period == RecurringPeriod.PER_HOUR:
return self.cores * 4.0/(30 * 24) + self.ram_in_gb * 3.0/(30* 24)
else:
raise Exception('Invalid recurring period for VM Product pricing.')
@property
def description(self):
return "Virtual machine '{}': {} core(s), {}GB memory".format(
self.name, self.cores, self.ram_in_gb)
@staticmethod
def allowed_recurring_periods():
return list(filter(
lambda pair: pair[0] in [RecurringPeriod.PER_MONTH, RecurringPeriod.PER_HOUR],
RecurringPeriod.choices))
class VMWithOSProduct(VMProduct):
pass

View File

@ -1,7 +1,9 @@
from django.contrib.auth import get_user_model
from rest_framework import serializers
from .models import VMHost, VMProduct, VMSnapshotProduct, VMDiskProduct, VMDiskImageProduct
from uncloud_pay.models import RecurringPeriod
GB_SSD_PER_DAY=0.012
GB_HDD_PER_DAY=0.0006
@ -16,14 +18,7 @@ class VMHostSerializer(serializers.ModelSerializer):
fields = '__all__'
class VMProductSerializer(serializers.ModelSerializer):
class Meta:
model = VMProduct
fields = '__all__'
class VMDiskProductSerializer(serializers.ModelSerializer):
# vm = VMProductSerializer()
class Meta:
model = VMDiskProduct
fields = '__all__'
@ -33,6 +28,25 @@ class VMDiskImageProductSerializer(serializers.ModelSerializer):
model = VMDiskImageProduct
fields = '__all__'
class VMProductSerializer(serializers.HyperlinkedModelSerializer):
# Custom field used at creation (= ordering) only.
recurring_period = serializers.ChoiceField(
choices=VMProduct.allowed_recurring_periods())
class Meta:
model = VMProduct
fields = ['uuid', 'order', 'owner', 'status', 'name', \
'cores', 'ram_in_gb', 'recurring_period']
read_only_fields = ['uuid', 'order', 'owner', 'status']
class ManagedVMProductSerializer(serializers.ModelSerializer):
"""
Managed VM serializer used in ungleich_service app.
"""
class Meta:
model = VMProduct
fields = [ 'cores', 'ram_in_gb']
class VMSnapshotProductSerializer(serializers.ModelSerializer):
class Meta:
model = VMSnapshotProduct

View File

@ -1,3 +1,4 @@
from django.db import transaction
from django.shortcuts import render
from django.contrib.auth.models import User
@ -7,11 +8,11 @@ from rest_framework import viewsets, permissions
from rest_framework.response import Response
from rest_framework.exceptions import ValidationError
from .models import VMHost, VMProduct, VMSnapshotProduct, VMDiskProduct, VMDiskImageProduct
from uncloud_pay.models import Order
from .serializers import VMHostSerializer, VMProductSerializer, VMSnapshotProductSerializer, VMDiskImageProductSerializer, VMDiskProductSerializer
from uncloud_pay.helpers import ProductViewSet
import datetime
@ -77,27 +78,37 @@ class VMDiskProductViewSet(viewsets.ModelViewSet):
class VMProductViewSet(viewsets.ModelViewSet):
class VMProductViewSet(ProductViewSet):
permission_classes = [permissions.IsAuthenticated]
serializer_class = VMProductSerializer
def get_queryset(self):
return VMProduct.objects.filter(owner=self.request.user)
# Use a database transaction so that we do not get half-created structure
# if something goes wrong.
@transaction.atomic
def create(self, request):
# Extract serializer data.
serializer = VMProductSerializer(data=request.data, context={'request': request})
serializer.is_valid(raise_exception=True)
# Create order
now = datetime.datetime.now()
order = Order(owner=request.user,
creation_date=now,
starting_date=now,
recurring_price=20,
one_time_price=0,
recurring_period="per_month")
order_recurring_period = serializer.validated_data.pop("recurring_period")
# Create base order.
order = Order.objects.create(
recurring_period=order_recurring_period,
owner=request.user
)
order.save()
serializer.save(owner=request.user, order=order)
# Create VM.
vm = serializer.save(owner=request.user, order=order)
# Add Product record to order (VM is mutable, allows to keep history in order).
# XXX: Move this to some kind of on_create hook in parent Product class?
order.add_record(vm.setup_fee,
vm.recurring_price(order.recurring_period), vm.description)
return Response(serializer.data)

View File

View File

@ -0,0 +1,3 @@
from django.contrib import admin
# Register your models here.

View File

@ -0,0 +1,5 @@
from django.apps import AppConfig
class UngleichServiceConfig(AppConfig):
name = 'ungleich_service'

View File

@ -0,0 +1,33 @@
# Generated by Django 3.0.3 on 2020-02-28 13:44
from django.conf import settings
from django.db import migrations, models
import django.db.models.deletion
import uuid
class Migration(migrations.Migration):
initial = True
dependencies = [
('uncloud_pay', '0010_merge_20200228_1303'),
migrations.swappable_dependency(settings.AUTH_USER_MODEL),
('uncloud_vm', '0007_auto_20200228_1344'),
]
operations = [
migrations.CreateModel(
name='MatrixServiceProduct',
fields=[
('uuid', models.UUIDField(default=uuid.uuid4, editable=False, primary_key=True, serialize=False)),
('status', models.CharField(choices=[('pending', 'Pending'), ('being_created', 'Being created'), ('active', 'Active'), ('deleted', 'Deleted')], default='pending', max_length=256)),
('order', models.ForeignKey(editable=False, null=True, on_delete=django.db.models.deletion.CASCADE, to='uncloud_pay.Order')),
('owner', models.ForeignKey(editable=False, on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
('vm', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='uncloud_vm.VMProduct')),
],
options={
'abstract': False,
},
),
]

View File

@ -0,0 +1,18 @@
# Generated by Django 3.0.3 on 2020-02-28 14:16
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
('ungleich_service', '0001_initial'),
]
operations = [
migrations.AddField(
model_name='matrixserviceproduct',
name='domain',
field=models.CharField(default='domain.tld', max_length=255),
),
]

View File

@ -0,0 +1,32 @@
import uuid
from django.db import models
from uncloud_pay.models import Product, RecurringPeriod
from uncloud_vm.models import VMProduct
class MatrixServiceProduct(Product):
monthly_managment_fee = 20
description = "Managed Matrix HomeServer"
# Specific to Matrix-as-a-Service
vm = models.ForeignKey(
VMProduct, on_delete=models.CASCADE
)
domain = models.CharField(max_length=255, default='domain.tld')
def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
if recurring_period == RecurringPeriod.PER_MONTH:
return self.monthly_managment_fee
else:
raise Exception('Invalid recurring period for VM Product pricing.')
@staticmethod
def allowed_recurring_periods():
return list(filter(
lambda pair: pair[0] in [RecurringPeriod.PER_MONTH],
RecurringPeriod.choices))
@property
def setup_fee(self):
return 30

View File

@ -0,0 +1,17 @@
from rest_framework import serializers
from .models import MatrixServiceProduct
from uncloud_vm.serializers import ManagedVMProductSerializer
from uncloud_vm.models import VMProduct
from uncloud_pay.models import RecurringPeriod
class MatrixServiceProductSerializer(serializers.ModelSerializer):
vm = ManagedVMProductSerializer()
# Custom field used at creation (= ordering) only.
recurring_period = serializers.ChoiceField(
choices=MatrixServiceProduct.allowed_recurring_periods())
class Meta:
model = MatrixServiceProduct
fields = ['uuid', 'order', 'owner', 'status', 'vm', 'domain', 'recurring_period']
read_only_fields = ['uuid', 'order', 'owner', 'status']

View File

@ -0,0 +1,3 @@
from django.test import TestCase
# Create your tests here.

View File

@ -0,0 +1,61 @@
from rest_framework import viewsets, permissions
from rest_framework.response import Response
from django.db import transaction
from .models import MatrixServiceProduct
from .serializers import MatrixServiceProductSerializer
from uncloud_pay.helpers import ProductViewSet
from uncloud_pay.models import Order
from uncloud_vm.models import VMProduct
class MatrixServiceProductViewSet(ProductViewSet):
permission_classes = [permissions.IsAuthenticated]
serializer_class = MatrixServiceProductSerializer
def get_queryset(self):
return MatrixServiceProduct.objects.filter(owner=self.request.user)
@transaction.atomic
def create(self, request):
# Extract serializer data.
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
order_recurring_period = serializer.validated_data.pop("recurring_period")
# Create base order.
order = Order.objects.create(
recurring_period=order_recurring_period,
owner=request.user
)
order.save()
# Create unerderlying VM.
# TODO: move this logic to a method for use with other
# products.
vm_data = serializer.validated_data.pop('vm')
vm_data['owner'] = request.user
vm_data['order'] = order
vm = VMProduct.objects.create(**vm_data)
# XXX: Move this to some kind of on_create hook in parent
# Product class?
order.add_record(
vm.setup_fee,
vm.recurring_price(order.recurring_period),
vm.description)
# Create service.
service = serializer.save(
order=order,
owner=self.request.user,
vm=vm)
# XXX: Move this to some kind of on_create hook in parent
# Product class?
order.add_record(
service.setup_fee,
service.recurring_price(order.recurring_period),
service.description)
return Response(serializer.data)