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 get_backend

class Command(BaseCommand):

    args = "<backend ID>"

    help = "Modify a backend"

    option_list = BaseCommand.option_list + (

        make_option('--clustername',

            dest='clustername',

            help="Set backend's clustername"),

        make_option('--port',

            dest='port',

            help="Set backend's port"),

        make_option('--username',

            dest='username',

            help="Set backend'username"),

        make_option('--password',

            dest='password',

            help="Set backend's password"),

        make_option('--drained',

            dest='drained',

            action='store_true',

            default=False,

            help="Set the backend as drained to exclude from allocation "\

                 "operations"),

        make_option('--no-drained',

            dest='drained',

            action='store_false'),

        make_option('--offline',

            dest='offline',

            action='store_true',

            default=False,

            help="Set the backend as offline to not communicate in order "\

                 "to avoid delays"),

        make_option('--no-offline',

            dest='offline',

            action='store_false')

        )

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

        if len(args) != 1:

            raise CommandError("Please provide a backend ID")

        backend = get_backend(args[0])

        # Ensure fields correspondence with options and Backend model

        fields = ('clustername', 'port', 'username', 'password', 'drained',

                  'offline')

        for field in fields:

            value = options.get(field)

            if value is not None:

                backend.__setattr__(field, value)

        backend.save()