Synnefo

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from optparse import make_option

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

from synnefo.management import common

from synnefo.logic import subnets

HELP_MSG = """

Create a new subnet without authenticating the user. The limit of one

IPv4/IPv6 subnet per network still applies. Mandatory fields are CIDR and the

Network ID.

"""

class Command(BaseCommand):

    help = "Create a new Subnet." + HELP_MSG

    option_list = BaseCommand.option_list + (

        make_option("--network-id", dest="network_id",

                    help="Specify the Network to attach the subnet. To get the"

                         " networks of a user, use snf-manage network-list"

                         " --user ID."),

        make_option("--cidr", dest="cidr",

                    help="The CIDR of the subnet, e.g., 192.168.42.0/24"),

        make_option("--allocation-pools", dest="allocation_pools",

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

                    " VMs. Syntax: \n"

                    "'[[192.168.42.100,192.168.42.200],"

                    "[192.168.42.220,129.168.42.240]]'"),

        make_option("--name", dest="name",

                    help="An arbitrary string for naming the subnet."),

        make_option("--ip-version", dest="ipversion",

                    help="IP version of the CIDR. The only acceptable value"

                    " is 4 or 6. The value must also be in sync with the"

                    " CIDR. Default value: 4"),

        make_option("--gateway", dest="gateway",

                    help="An IP to use as a gateway for the subnet."

                    " The IP must be inside the CIDR range and cannot be the"

                    " subnet or broadcast IP. If no value is specified, the"

                    " first available IP of the subnet will be used."),

        make_option("--no-dhcp", action="store_true", dest="dhcp",

                    default=False,

                    help="True/False value for DHCP/SLAAC. True by default."),

        make_option("--dns", dest="dns",

                    help="DNS nameservers to be used by the VMs in the subnet."

                    " For the time being, this option isn't supported."),

        make_option("--host-routes", dest="host_routes",

                    help="Host routes to be used for advanced routing"

                    "settings. For the time being, this option isn't"

                    " supported.")

    )

    @common.convert_api_faults

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

        if args:

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

        network_id = options["network_id"]

        cidr = options["cidr"]

        if not network_id:

            raise CommandError("network-id is mandatory")

        if not cidr:

            raise CommandError("cidr is mandatory")

        user_id = common.get_network(network_id).userid

        name = options["name"]

        allocation_pools = options["allocation_pools"]

        ipversion = options["ipversion"]

        if not ipversion:

            ipversion = 4

        else:

            try:

                ipversion = int(ipversion)

            except ValueError:

                raise CommandError("ip-version must be 4 or 6")

        gateway = options["gateway"]

        if not gateway:

            gateway = ""

        dhcp = options["dhcp"]

        dhcp = False if dhcp else True

        dns = options["dns"]

        host_routes = options["host_routes"]

        subnets.create_subnet(name=name,

                              network_id=network_id,

                              cidr=cidr,

                              allocation_pools=allocation_pools,

                              gateway=gateway,

                              ipversion=ipversion,

                              dhcp=dhcp,

                              slac=dhcp,

                              dns_nameservers=dns,

                              host_routes=host_routes,

                              user_id=user_id)