Synnefo

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from optparse import make_option

from django.core.management.base import CommandError

from snf_django.management.commands import SynnefoCommand

from synnefo.management.common import convert_api_faults

from snf_django.management.utils import parse_bool

from synnefo.db.models import Network

from synnefo.logic import networks, subnets

from synnefo.management import pprint

import ipaddr

NETWORK_FLAVORS = Network.FLAVORS.keys()

class Command(SynnefoCommand):

    can_import_settings = True

    output_transaction = True

    help = "Create a new network"

    option_list = SynnefoCommand.option_list + (

        make_option(

            '--name',

            dest='name',

            help="Name of the network"),

        make_option(

            '--owner',

            dest='owner',

            help="The owner of the network"),

        make_option(

            '--subnet',

            dest='subnet',

            default=None,

            # required=True,

            help='IPv4 subnet of the network'),

        make_option(

            '--gateway',

            dest='gateway',

            default=None,

            help='IPv4 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."),

        make_option(

            '--allocation-pool',

            dest='allocation_pools',

            action='append',

            help="IP allocation pools to be used for assigning IPs to"

                 " VMs. Can be used multiple times. Syntax: \n"

                 "192.168.42.220,192.168.42.240. Starting IP must proceed "

                 "ending IP. If no allocation pools are given, the whole "

                 "subnet range is used, excluding the gateway IP, the "

                 "broadcast address and the network address"),

        make_option(

            "--drained",

            dest="drained",

            metavar="True|False",

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

            default="False",

            help="Set network as drained to prevent creation of new ports."),

    )

    @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']

        public = options['public']

        flavor = options['flavor']

        mode = options['mode']

        link = options['link']

        mac_prefix = options['mac_prefix']

        tags = options['tags']

        userid = options["owner"]

        allocation_pools = options["allocation_pools"]

        floating_ip_pool = parse_bool(options["floating_ip_pool"])

        dhcp = parse_bool(options["dhcp"])

        drained = parse_bool(options["drained"])

        if name is None:

            name = ""

        if flavor is None:

            raise CommandError("flavor is required")

        if ((subnet is None) and (subnet6 is None)) and dhcp is not False:

            raise CommandError("Cannot set DHCP without subnet or subnet6")

        if subnet is None and gateway is not None:

            raise CommandError("Cannot use gateway without subnet")

        if subnet is None and allocation_pools is not None:

            raise CommandError("Cannot use allocation-pools without subnet")

        if subnet6 is None and gateway6 is not None:

            raise CommandError("Cannot use gateway6 without subnet6")

        if flavor == "IP_LESS_ROUTED" and not (subnet or subnet6):

            raise CommandError("Cannot create 'IP_LESS_ROUTED' network without"

                               " subnet")

        if not (userid or public):

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

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

                                  public=public, mode=mode,

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

                                  floating_ip_pool=floating_ip_pool,

                                  drained=drained)

        if subnet is not None:

            alloc = None

            if allocation_pools is not None:

                alloc = subnets.parse_allocation_pools(allocation_pools)

                alloc.sort()

            name = "IPv4 Subnet of Network %s" % network.id

            subnets.create_subnet(network.id, cidr=subnet, name=name,

                                  ipversion=4, gateway=gateway, dhcp=dhcp,

                                  user_id=userid,

                                  allocation_pools=alloc)

        if subnet6 is not None:

            name = "IPv6 Subnet of Network %s" % network.id

            subnets.create_subnet(network.id, cidr=subnet6, name=name,

                                  ipversion=6, gateway=gateway6,

                                  dhcp=dhcp, user_id=userid)

        self.stdout.write("Created network '%s' in DB:\n" % network)

        pprint.pprint_network(network, stdout=self.stdout)

        pprint.pprint_network_subnets(network, stdout=self.stdout)

        networks.create_network_in_backends(network)

        # TODO: Add --wait option to track job progress and report successful

        # creation in each backend.

        self.stdout.write("\nSuccessfully issued job to create network in"

                          " backends\n")