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 format_bool, filter_results

from synnefo.db.models import Flavor

FIELDS = Flavor._meta.get_all_field_names()

class Command(BaseCommand):

    help = "List flavors"

    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 flavors"),

         make_option('--filter-by',

            dest='filter_by',

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

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

                 " --filter-by \"cpu=1,ram!=1024\"."

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

        )

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

        if args:

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

        labels = ('id', 'name', 'cpus', 'ram', 'disk', 'template', 'deleted')

        columns = (3, 12, 6, 6, 6, 10, 7)

        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')

        if options['deleted']:

            flavors = Flavor.objects.all()

        else:

            flavors = Flavor.objects.filter(deleted=False)

        filter_by = options['filter_by']

        if filter_by:

            flavors = filter_results(flavors, filter_by)

        for flavor in flavors.order_by('id'):

            id = str(flavor.id)

            cpu = str(flavor.cpu)

            ram = str(flavor.ram)

            disk = str(flavor.disk)

            deleted = format_bool(flavor.deleted)

            fields = (id, flavor.name, cpu, ram, disk, flavor.disk_template,

                      deleted)

            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')