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

from synnefo.db.models import Network

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('--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))

        )

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

        if args:

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

        if options['deleted']:

            networks = Network.objects.all()

        else:

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

        if options['public']:

            networks = networks.filter(public=True)

        filter_by = options['filter_by']

        if filter_by:

            networks = filter_results(networks, filter_by)

        labels = ['id', 'name', 'type', 'owner',

                  'mac_prefix', 'dhcp', 'state', 'link', 'vms', 'public']

        columns = [3, 16, 22, 30, 10, 6, 8, 12, 4, 6]

        if options['ipv6']:

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

            columns.extend([16, 16])

        else:

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

            columns.extend([14, 14])

        if not options['csv']:

            line = ' '.join(l.rjust(w) for l, w in zip(labels, columns))

            self.stdout.write(line + '\n')

            sep = '-' * len(line)

            self.stdout.write(sep + '\n')

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

            fields = [str(network.id),

                      network.name,

                      network.type,

                      network.userid or '',

                      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 ''])

            if options['csv']:

                line = '|'.join(fields)

            else:

                line = ' '.join(f.rjust(w) for f, w in zip(fields, columns))

            self.stdout.write(line.encode('utf8') + '\n')