Synnefo

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from optparse import make_option

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

from synnefo.db.models import Network, pooled_rapi_client

from synnefo.management.common import validate_network_info, get_network

HELP_MSG = \

"""Modify a network.

This management command will only modify the state of the network in Cyclades

DB. The state of the network in the Ganeti backends will remain unchanged. You

should manually modify the network in all the backends, to synchronize the

state of DB and Ganeti.

The only exception is add_reserved_ips and remove_reserved_ips options, which

modify the IP pool in the Ganeti backends.

"""

class Command(BaseCommand):

    args = "<network id>"

    help = HELP_MSG

    output_transaction = True

    option_list = BaseCommand.option_list + (

        make_option('--name',

            dest='name',

            metavar='NAME',

            help="Set network's name"),

        make_option('--userid',

            dest='userid',

            help="Set the userid of the network owner"),

        make_option('--subnet',

            dest='subnet',

            help="Set network's subnet"),

        make_option('--gateway',

            dest='gateway',

            help="Set network's gateway"),

        make_option('--subnet6',

            dest='subnet6',

            help="Set network's IPv6 subnet"),

        make_option('--gateway6',

            dest='gateway6',

            help="Set network's IPv6 gateway"),

        make_option('--dhcp',

            dest='dhcp',

            help="Set if network will use nfdhcp"),

        make_option('--state',

            dest='state',

            metavar='STATE',

            help="Set network's state"),

        make_option('--link',

            dest='link',

            help="Set the connectivity link"),

        make_option('--mac-prefix',

            dest="mac_prefix",

            help="Set the MAC prefix"),

        make_option('--add-reserved-ips',

            dest="add_reserved_ips",

            help="Comma seperated list of IPs to externally reserve."),

        make_option('--remove-reserved-ips',

            dest="remove_reserved_ips",

            help="Comma seperated list of IPs to externally release."),

    )

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

        if len(args) != 1:

            raise CommandError("Please provide a network ID")

        network = get_network(args[0])

        # Validate subnet

        if options.get('subnet'):

            validate_network_info(options)

        # Validate state

        state = options.get('state')

        if state:

            allowed = [x[0] for x in Network.OPER_STATES]

            if state not in allowed:

                msg = "Invalid state, must be one of %s" % ', '.join(allowed)

                raise CommandError(msg)

        fields = ('name', 'userid', 'subnet', 'gateway', 'subnet6', 'gateway6',

                  'dhcp', 'state', 'link', 'mac_prefix')

        for field in fields:

            value = options.get(field, None)

            if value:

                network.__setattr__(field, value)

        add_reserved_ips = options.get('add_reserved_ips')

        remove_reserved_ips = options.get('remove_reserved_ips')

        if add_reserved_ips or remove_reserved_ips:

            if add_reserved_ips:

                add_reserved_ips = add_reserved_ips.split(",")

            if remove_reserved_ips:

                remove_reserved_ips = remove_reserved_ips.split(",")

        for bnetwork in network.backend_networks.all():

            with pooled_rapi_client(bnetwork.backend) as c:

                c.ModifyNetwork(network=network.backend_id,

                                add_reserved_ips=add_reserved_ips,

                                remove_reserved_ips=remove_reserved_ips)

        network.save()