Synnefo

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from optparse import make_option

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

from synnefo.management.common import get_backend, convert_api_faults

from synnefo.webproject.management.utils import parse_bool

from synnefo.db.models import Network, Backend

from synnefo.logic import networks

from synnefo.logic.backend import create_network

NETWORK_FLAVORS = Network.FLAVORS.keys()

class Command(BaseCommand):

    can_import_settings = True

    output_transaction = True

    help = "Create a new network"

    option_list = BaseCommand.option_list + (

        make_option(

            '--name',

            dest='name',

            help="Name of network"),

        make_option(

            '--owner',

            dest='owner',

            help="The owner of the network"),

        make_option(

            '--subnet',

            dest='subnet',

            default=None,

            # required=True,

            help='Subnet of the network'),

        make_option(

            '--gateway',

            dest='gateway',

            default=None,

            help='Gateway of the network'),

        make_option(

            '--subnet6',

            dest='subnet6',

            default=None,

            help='IPv6 subnet of the network'),

        make_option(

            '--gateway6',

            dest='gateway6',

            default=None,

            help='IPv6 gateway of the network'),

        make_option(

            '--dhcp',

            dest='dhcp',

            default="False",

            choices=["True", "False"],

            metavar="True|False",

            help='Automatically assign IPs'),

        make_option(

            '--public',

            dest='public',

            action='store_true',

            default=False,

            help='Network is public'),

        make_option(

            '--flavor',

            dest='flavor',

            default=None,

            choices=NETWORK_FLAVORS,

            help='Network flavor. Choices: ' + ', '.join(NETWORK_FLAVORS)),

        make_option(

            '--mode',

            dest='mode',

            default=None,

            help="Overwrite flavor connectivity mode."),

        make_option(

            '--link',

            dest='link',

            default=None,

            help="Overwrite flavor connectivity link."),

        make_option(

            '--mac-prefix',

            dest='mac_prefix',

            default=None,

            help="Overwrite flavor connectivity MAC prefix"),

        make_option(

            '--tags',

            dest='tags',

            default=None,

            help='The tags of the Network (comma separated strings)'),

        make_option(

            '--floating-ip-pool',

            dest='floating_ip_pool',

            default="False",

            choices=["True", "False"],

            metavar="True|False",

            help="Use the network as a Floating IP pool. Floating IP pools"

                 " are created in all available backends."),

        make_option(

            '--backend-id',

            dest='backend_id',

            default=None,

            help='ID of the backend that the network will be created. Only for'

                 ' public networks'),

    )

    @convert_api_faults

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

        if args:

            raise CommandError("Command doesn't accept any arguments")

        name = options['name']

        subnet = options['subnet']

        gateway = options['gateway']

        subnet6 = options['subnet6']

        gateway6 = options['gateway6']

        backend_id = options['backend_id']

        public = options['public']

        flavor = options['flavor']

        mode = options['mode']

        link = options['link']

        mac_prefix = options['mac_prefix']

        tags = options['tags']

        userid = options["owner"]

        floating_ip_pool = parse_bool(options["floating_ip_pool"])

        dhcp = parse_bool(options["dhcp"])

        if not name:

            raise CommandError("name is required")

        if not flavor:

            raise CommandError("flavor is required")

        if (subnet is None) and (subnet6 is None):

            raise CommandError("subnet or subnet6 is required")

        if subnet is None and gateway is not None:

            raise CommandError("Can not use gateway without subnet")

        if subnet6 is None and gateway6 is not None:

            raise CommandError("Can not use gateway6 without subnet6")

        if public and not (backend_id or floating_ip_pool):

            raise CommandError("backend-id is required")

        if not userid and not public:

            raise CommandError("'owner' is required for private networks")

        if backend_id is not None:

            try:

                backend_id = int(backend_id)

            except ValueError:

                raise CommandError("Invalid backend-id: %s", backend_id)

            backend = get_backend(backend_id)

        network = networks.create(user_id=userid, name=name, flavor=flavor,

                                  subnet=subnet, gateway=gateway,

                                  subnet6=subnet6, gateway6=gateway6,

                                  dhcp=dhcp, public=public, mode=mode,

                                  link=link, mac_prefix=mac_prefix, tags=tags,

                                  floating_ip_pool=floating_ip_pool)

        # Create network in Backend if needed

        if floating_ip_pool:

            backends = Backend.objects.filter(offline=False)

        elif backend_id:

            backends = [backend]

        else:

            backends = []

        for backend in backends:

            network.create_backend_network(backend)

            self.stdout.write("Trying to connect network to backend '%s'\n" %

                              backend)

            jobs = create_network(network=network, backend=backend,

                                  connect=True)

            self.stdout.write("Successfully issued jobs: %s\n" %

                              ",".join(map(str, jobs)))