Synnefo

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from optparse import make_option

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

from synnefo.api.util import get_image

from synnefo.db.models import VirtualMachine

class Command(BaseCommand):

    help = "List servers"

    option_list = BaseCommand.option_list + (

        make_option('-c',

            action='store_true',

            dest='csv',

            default=False,

            help="Use pipes to separate values"),

        make_option('--build',

            action='store_true',

            dest='build',

            default=False,

            help="List only servers in the building state"),

        )

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

        if args:

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

        servers = VirtualMachine.objects.all()

        if options['build']:

            servers = servers.filter(operstate='BUILD')

        labels = ('id', 'name', 'owner', 'flavor', 'image', 'state')

        columns = (3, 12, 20, 11, 12, 9)

        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 server in servers:

            id = str(server.id)

            flavor = server.flavor.name

            try:

                image = get_image(server.imageid, server.userid)['name']

            except:

                image = server.imageid

            fields = (id, server.name, server.userid, flavor, image,

                      server.operstate)

            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')