import os import logging from dateutil.relativedelta import relativedelta from django.db import models from django.utils import timezone from django.utils.functional import cached_property from Crypto.PublicKey import RSA from membership.models import StripeCustomer, CustomUser from utils.models import BillingAddress from utils.mixins import AssignPermissionsMixin logger = logging.getLogger(__name__) class HostingPlan(models.Model): disk_size = models.FloatField(default=0.0) cpu_cores = models.FloatField(default=0.0) memory = models.FloatField(default=0.0) def serialize(self): return { 'id': self.id, 'cpu': self.cpu_cores, 'memory': self.memory, 'disk_size': self.disk_size, 'price': self.price(), } @classmethod def get_serialized_configs(cls): return [cfg.serialize() for cfg in cls.objects.all()] def price(self): price = self.disk_size * 0.6 price += self.cpu_cores * 5 price += self.memory * 2 return price class HostingOrder(AssignPermissionsMixin, models.Model): ORDER_APPROVED_STATUS = 'Approved' ORDER_DECLINED_STATUS = 'Declined' vm_id = models.IntegerField(default=0) customer = models.ForeignKey(StripeCustomer) billing_address = models.ForeignKey(BillingAddress) created_at = models.DateTimeField(auto_now_add=True) approved = models.BooleanField(default=False) last4 = models.CharField(max_length=4) cc_brand = models.CharField(max_length=10) stripe_charge_id = models.CharField(max_length=100, null=True) price = models.FloatField() subscription_id = models.CharField(max_length=100, null=True) permissions = ('view_hostingorder',) class Meta: permissions = ( ('view_hostingorder', 'View Hosting Order'), ) def __str__(self): return "%s" % (self.id) @cached_property def status(self): return self.ORDER_APPROVED_STATUS if self.approved else self.ORDER_DECLINED_STATUS @classmethod def create(cls, price=None, vm_id=None, customer=None, billing_address=None): instance = cls.objects.create( price=price, vm_id=vm_id, customer=customer, billing_address=billing_address ) instance.assign_permissions(customer.user) return instance def set_approved(self): self.approved = True self.save() def set_stripe_charge(self, stripe_charge): self.stripe_charge_id = stripe_charge.id self.last4 = stripe_charge.source.last4 self.cc_brand = stripe_charge.source.brand self.save() def set_subscription_id(self, subscription_object, cc_details): """ When creating a Stripe subscription, we have subscription id. We store this in the subscription_id field. This method sets the subscription id from subscription_object and also the last4 and credit card brands used for this order. :param subscription_object: Stripe's subscription object :param cc_details: A dict containing card details {last4, brand} :return: """ self.subscription_id = subscription_object.id self.last4 = cc_details.get('last4') self.cc_brand = cc_details.get('brand') self.save() def get_cc_data(self): return { 'last4': self.last4, 'cc_brand': self.cc_brand, } if self.last4 and self.cc_brand else None class UserHostingKey(models.Model): user = models.ForeignKey(CustomUser) public_key = models.TextField() private_key = models.FileField(upload_to='private_keys', blank=True) created_at = models.DateTimeField(auto_now_add=True) name = models.CharField(max_length=100) @staticmethod def generate_RSA(bits=2048): ''' Generate an RSA keypair with an exponent of 65537 in PEM format param: bits The key length in bits Return private key and public key ''' new_key = RSA.generate(2048, os.urandom) public_key = new_key.publickey().exportKey("OpenSSH") private_key = new_key.exportKey("PEM") return private_key, public_key @classmethod def generate_keys(cls): private_key, public_key = cls.generate_RSA() # self.public_key = public_key # self.save(update_fields=['public_key']) return private_key, public_key class HostingBill(AssignPermissionsMixin, models.Model): customer = models.ForeignKey(StripeCustomer) billing_address = models.ForeignKey(BillingAddress) total_price = models.FloatField(default=0.0) permissions = ('view_hostingbill',) class Meta: permissions = ( ('view_hostingbill', 'View Hosting Bill'), ) def __str__(self): return "%s" % (self.customer.user.email) @classmethod def create(cls, customer=None, billing_address=None): instance = cls.objects.create(customer=customer, billing_address=billing_address) return instance class VMDetail(models.Model): user = models.ForeignKey(CustomUser) vm_id = models.IntegerField(default=0) disk_size = models.FloatField(default=0.0) cores = models.FloatField(default=0.0) memory = models.FloatField(default=0.0) configuration = models.CharField(default='', max_length=25) ipv4 = models.TextField(default='') ipv6 = models.TextField(default='') created_at = models.DateTimeField(auto_now_add=True) terminated_at = models.DateTimeField(null=True) def end_date(self): end_date = self.terminated_at if self.terminated_at else timezone.now() months = relativedelta(end_date, self.created_at) end_date = self.created_at + relativedelta(months=months) return end_date