Synnefo

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from itertools import product

from optparse import make_option

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

from synnefo.db.models import Flavor

class Command(BaseCommand):

    output_transaction = True

    option_list = BaseCommand.option_list + (

        make_option("-n", "--dry-run", dest="dry_run", action="store_true"),

    )

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

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

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

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

    help = "Create one or more flavors.\n\n"\

           " The 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:

            if options["dry_run"]:

                flavor = Flavor(cpu=cpu, ram=ram, disk=disk,

                                disk_template=template)

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

            else:

                flavor, created = \

                    Flavor.objects.get_or_create(cpu=cpu, ram=ram, disk=disk,

                                                 disk_template=template)

                if created:

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

                else:

                    self.stdout.write("Flavor '%s' already exists\n"

                                      % flavor.name)