Allow to select billing period when registering VM

This commit is contained in:
fnux 2020-03-03 10:14:56 +01:00
parent 5559d600c7
commit b31aa72f84
4 changed files with 25 additions and 5 deletions

View file

@ -299,5 +299,9 @@ class Product(models.Model):
def setup_fee(self):
return 0
@property
def recurring_period(self):
return self.order.recurring_period
class Meta:
abstract = True

View file

@ -47,9 +47,11 @@ class VMProduct(Product):
ram_in_gb = models.FloatField()
def recurring_price(self, recurring_period=RecurringPeriod.PER_MONTH):
if 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.')

View file

@ -2,6 +2,7 @@ from django.contrib.auth import get_user_model
from rest_framework import serializers
from .models import VMHost, VMProduct, VMSnapshotProduct
from uncloud_pay.models import RecurringPeriod
class VMHostSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
@ -10,10 +11,19 @@ class VMHostSerializer(serializers.HyperlinkedModelSerializer):
class VMProductSerializer(serializers.HyperlinkedModelSerializer):
# TODO: move this to VMProduct.
allowed_recurring_periods=list(filter(
lambda pair: pair[0] in [RecurringPeriod.PER_MONTH, RecurringPeriod.PER_HOUR],
RecurringPeriod.choices))
# Custom field used at creation (= ordering) only.
recurring_period = serializers.ChoiceField(
choices=allowed_recurring_periods)
class Meta:
model = VMProduct
fields = ['uuid', 'order', 'owner', 'status', 'name', \
'cores', 'ram_in_gb']
'cores', 'ram_in_gb', 'recurring_period']
read_only_fields = ['uuid', 'order', 'owner', 'status']
class VMSnapshotProductSerializer(serializers.ModelSerializer):

View file

@ -32,19 +32,23 @@ class VMProductViewSet(ProductViewSet):
# 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)
order_recurring_period = serializer.validated_data.pop("recurring_period")
# Create base order.
order = Order.objects.create(
recurring_period=RecurringPeriod.PER_MONTH,
recurring_period=order_recurring_period,
owner=request.user
)
order.save()
# Create VM.
serializer = VMProductSerializer(data=request.data, context={'request': request})
serializer.is_valid(raise_exception=True)
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)