Synnefo

# Copyright 2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

from optparse import make_option

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

from synnefo.management.common import validate_network_info, get_backend

from synnefo.webproject.management.utils import pprint_table

from synnefo import quotas

from synnefo.db.models import Network

from synnefo.db.utils import validate_mac, InvalidMacAddress

from synnefo.logic.backend import create_network

from synnefo.api.util import values_from_flavor

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(

            "-n",

            "--dry-run",

            dest="dry_run",

            default=False,

            action="store_true"),

        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',

            action='store_true',

            default=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(

            '--backend-id',

            dest='backend_id',

            default=None,

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

                 ' public networks'),

    )

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

        if args:

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

        dry_run = options["dry_run"]

        name = options['name']

        subnet = options['subnet']

        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"]

        if not name:

            raise CommandError("Name is required")

        if not subnet:

            raise CommandError("Subnet is required")

        if not flavor:

            raise CommandError("Flavor is required")

        if public and not backend_id:

            raise CommandError("backend-id is required")

        if not userid and not public:

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

        if mac_prefix and flavor == "MAC_FILTERED":

            raise CommandError("Can not override MAC_FILTERED mac-prefix")

        if link and flavor == "PHYSICAL_VLAN":

            raise CommandError("Can not override PHYSICAL_VLAN link")

        if backend_id:

            backend = get_backend(backend_id)

        fmode, flink, fmac_prefix, ftags = values_from_flavor(flavor)

        mode = mode or fmode

        link = link or flink

        mac_prefix = mac_prefix or fmac_prefix

        tags = tags or ftags

        try:

            validate_mac(mac_prefix + "0:00:00:00")

        except InvalidMacAddress:

            raise CommandError("Invalid MAC prefix '%s'" % mac_prefix)

        subnet, gateway, subnet6, gateway6 = validate_network_info(options)

        if not link or not mode:

            raise CommandError("Can not create network."

                               " No connectivity link or mode")

        netinfo = {

           "name": name,

           "userid": options["owner"],

           "subnet": subnet,

           "gateway": gateway,

           "gateway6": gateway6,

           "subnet6": subnet6,

           "dhcp": options["dhcp"],

           "flavor": flavor,

           "public": public,

           "mode": mode,

           "link": link,

           "mac_prefix": mac_prefix,

           "tags": tags,

           "state": "ACTIVE"}

        if dry_run:

            self.stdout.write("Creating network:\n")

            pprint_table(self.stdout, tuple(netinfo.items()))

            return

        network = Network.objects.create(**netinfo)

        if userid:

            quotas.issue_and_accept_commission(network)

        if backend_id:

            # Create BackendNetwork only to the specified Backend

            network.create_backend_network(backend)

            create_network(network=network, backend=backend, connect=True)