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root / snf-cyclades-app / synnefo / api / management / commands / floating-ip-release.py @ 9d1e6480

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# Copyright 2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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#   1. Redistributions of source code must retain the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer.
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#
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#   2. Redistributions in binary form must reproduce the above
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#      copyright notice, this list of conditions and the following
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#      disclaimer in the documentation and/or other materials
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#      provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from optparse import make_option
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from django.db import transaction
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from django.core.management.base import BaseCommand, CommandError
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from synnefo.management.common import get_floating_ip_by_address
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from synnefo import quotas
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class Command(BaseCommand):
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    can_import_settings = True
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    output_transaction = True
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    help = "Release a floating IP"
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    @transaction.commit_on_success
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    def handle(self, *args, **options):
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        if not args:
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            raise CommandError("Please provide a floating-ip address")
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        address = args[0]
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        floating_ip = get_floating_ip_by_address(address, for_update=True)
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        if floating_ip.nic:
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            # This is safe, you also need for_update to attach floating IP to
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            # instance.
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            msg = "Floating IP '%s' is attached to instance." % floating_ip.id
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            raise CommandError(msg)
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        # Return the address of the floating IP back to pool
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        floating_ip.release_address()
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        # And mark the floating IP as deleted
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        floating_ip.deleted = True
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        floating_ip.save()
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        # Release quota for floating IP
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        quotas.issue_and_accept_commission(floating_ip, delete=True)
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        transaction.commit()
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        # Delete the floating IP from DB
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        floating_ip.delete()
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        self.stdout.write("Deleted floating IP '%s'.\n" % address)