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OpenStack Study: access_ips.py

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# Copyright 2013 IBM Corp.

#

# Licensed under the Apache License, Version 2.0 (the "License"); you may

# not use this file except in compliance with the License. You may obtain

# a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

# License for the specific language governing permissions and limitations

# under the License.

from webob import exc

from nova.api.openstack import extensions

from nova.api.openstack import wsgi

from nova.openstack.common.gettextutils import _

from nova.openstack.common import log as logging

from nova import utils

ALIAS = "os-access-ips"

LOG = logging.getLogger(__name__)

authorize = extensions.soft_extension_authorizer('compute', 'v3:' + ALIAS)

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class AccessIPsController(wsgi.Controller):

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    def _extend_server(self, req, server):

            db_instance = req.get_db_instance(server['id'])

            ip_v4 = db_instance.get('access_ip_v4')

            ip_v6 = db_instance.get('access_ip_v6')

            server['%s:access_ip_v4' % ALIAS] = (

                str(ip_v4) if ip_v4 is not None else '')

            server['%s:access_ip_v6' % ALIAS] = (

                str(ip_v6) if ip_v6 is not None else '')

    @wsgi.extends

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    def create(self, req, resp_obj, body):

        context = req.environ['nova.context']

        if authorize(context) and 'server' in resp_obj.obj:

            server = resp_obj.obj['server']

            self._extend_server(req, server)

    @wsgi.extends

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    def show(self, req, resp_obj, id):

        context = req.environ['nova.context']

        if authorize(context):

            server = resp_obj.obj['server']

            self._extend_server(req, server)

    @wsgi.extends

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    def update(self, req, resp_obj, id, body):

        context = req.environ['nova.context']

        if authorize(context):

            server = resp_obj.obj['server']

            self._extend_server(req, server)

    @wsgi.extends(action='rebuild')

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    def rebuild(self, req, resp_obj, id, body):

        context = req.environ['nova.context']

        if authorize(context):

            server = resp_obj.obj['server']

            self._extend_server(req, server)

    @wsgi.extends

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    def detail(self, req, resp_obj):

        context = req.environ['nova.context']

        if authorize(context):

            servers = resp_obj.obj['servers']

            for server in servers:

                self._extend_server(req, server)

**** CubicPower OpenStack Study ****

class AccessIPs(extensions.V3APIExtensionBase):

"""Access IPs support."""

name = "AccessIPs"

alias = ALIAS

version = 1

v4_key = '%s:access_ip_v4' % ALIAS

v6_key = '%s:access_ip_v6' % ALIAS

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    def get_controller_extensions(self):

        controller = AccessIPsController()

        extension = extensions.ControllerExtension(self, 'servers',

                                                   controller)

        return [extension]

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    def get_resources(self):

        return []

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    def server_create(self, server_dict, create_kwargs):

        if AccessIPs.v4_key in server_dict:

            access_ip_v4 = server_dict.get(AccessIPs.v4_key)

            if access_ip_v4:

                self._validate_access_ipv4(access_ip_v4)

                create_kwargs['access_ip_v4'] = access_ip_v4

            else:

                create_kwargs['access_ip_v4'] = None

        if AccessIPs.v6_key in server_dict:

            access_ip_v6 = server_dict.get(AccessIPs.v6_key)

            if access_ip_v6:

                self._validate_access_ipv6(access_ip_v6)

                create_kwargs['access_ip_v6'] = access_ip_v6

            else:

                create_kwargs['access_ip_v6'] = None

    server_update = server_create

    server_rebuild = server_create

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    def _validate_access_ipv4(self, address):

        if not utils.is_valid_ipv4(address):

            expl = _('access_ip_v4 is not proper IPv4 format')

            raise exc.HTTPBadRequest(explanation=expl)

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    def _validate_access_ipv6(self, address):

        if not utils.is_valid_ipv6(address):

            expl = _('access_ip_v6 is not proper IPv6 format')

            raise exc.HTTPBadRequest(explanation=expl)