uncloud/uncloud/ungleich_service/models.py

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
    setup_fee = 30

    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 monthly_managment_fee + vm.recurring_price(RecurringPeriod.PER_MONTH)
        else:
            raise Exception('Invalid recurring period for VM Product pricing.')

    def setup_fee(self):
        return setup_fee