Synnefo

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from optparse import make_option

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

from synnefo.management.common import (format_bool, filter_results, UUIDCache,

                                       Omit)

from synnefo.db.models import Network

from synnefo.management.common import pprint_table

FIELDS = Network._meta.get_all_field_names()

class Command(BaseCommand):

    help = "List networks"

    option_list = BaseCommand.option_list + (

        make_option('-c',

            action='store_true',

            dest='csv',

            default=False,

            help="Use pipes to separate values"),

        make_option('--deleted',

            action='store_true',

            dest='deleted',

            default=False,

            help="Include deleted networks"),

        make_option('--public',

            action='store_true',

            dest='public',

            default=False,

            help="List only public networks"),

        make_option('--user',

            dest='user',

            help="List only networks of the specified user"

                 " (uuid or display name"),

        make_option('--ipv6',

            action='store_true',

            dest='ipv6',

            default=False,

            help="Show IPv6 information of the network"),

        make_option('--filter-by',

            dest='filter_by',

            help="Filter results. Comma seperated list of key 'cond' val pairs"

                 " that displayed entries must satisfy. e.g."

                 " --filter-by \"name=Network-1,link!=prv0\"."

                 " Available keys are: %s" % ", ".join(FIELDS)),

        make_option('--displayname',

            action='store_true',

            dest='displayname',

            default=False,

            help="Display both uuid and display name"),

        )

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

        if args:

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

        ucache = UUIDCache()

        if options['deleted']:

            networks = Network.objects.all()

        else:

            networks = Network.objects.filter(deleted=False)

        if options['public']:

            networks = networks.filter(public=True)

        user = options['user']

        if user:

            if '@' in user:

                user = ucache.get_user(user)

            networks = networks.filter(userid=user)

        filter_by = options['filter_by']

        if filter_by:

            networks = filter_results(networks, filter_by)

        displayname = options['displayname']

        headers = filter(lambda x: x is not Omit,

                        ['id',

                         'name',

                         'flavor',

                         'owner_uuid',

                         'owner_name' if displayname else Omit,

                         'mac_prefix',

                         'dhcp',

                         'state',

                         'link',

                         'vms',

                         'public',

                         ])

        if options['ipv6']:

            headers.extend(['IPv6 Subnet', 'IPv6 Gateway'])

        else:

            headers.extend(['IPv4 Subnet', 'IPv4 Gateway'])

        table = []

        for network in networks.order_by("id"):

            uuid = network.userid

            if displayname:

                dname = ucache.get_user(uuid)

            fields = filter(lambda x: x is not Omit,

                            [str(network.id),

                             network.name,

                             network.flavor,

                             uuid or '-',

                             dname or '-' if displayname else Omit,

                             network.mac_prefix or '-',

                             str(network.dhcp),

                             network.state,

                             network.link or '-',

                             str(network.machines.count()),

                             format_bool(network.public),

                             ])

            if options['ipv6']:

                fields.extend([network.subnet6 or '', network.gateway6 or ''])

            else:

                fields.extend([network.subnet, network.gateway or ''])

            table.append(fields)

        separator = " | " if options['csv'] else None

        pprint_table(self.stdout, table, headers, separator)