Synnefo

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from itertools import product

from django.core.management.base import BaseCommand, CommandError

from synnefo.db.models import Flavor

class Command(BaseCommand):

    output_transaction = True

    args = "<cpu>[,<cpu>,...] " \

           "<ram>[,<ram>,...] " \

           "<disk>[,<disk>,...] " \

           "<disk template>[,<disk template>,...]"

    help = "Create one or more flavors.\n\nThe flavors that will be created are"\

           " those belonging to the cartesian product of the arguments"\

    def handle(self, *args, **options):

        if len(args) != 4:

            raise CommandError("Invalid number of arguments")

        cpus = args[0].split(',')

        rams = args[1].split(',')

        disks = args[2].split(',')

        templates = args[3].split(',')

        flavors = []

        for cpu, ram, disk, template in product(cpus, rams, disks, templates):

            try:

                flavors.append((int(cpu), int(ram), int(disk), template))

            except ValueError:

                raise CommandError("Invalid values")

        for cpu, ram, disk, template in flavors:

            flavor = Flavor.objects.create(cpu=cpu, ram=ram, disk=disk,

                                           disk_template=template)

            self.stdout.write("Created flavor %s\n" % (flavor.name,))