337 lines
12 KiB
Python
337 lines
12 KiB
Python
# Copyright 2011 OpenStack Foundation
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# Copyright (c) 2011 X.commerce, a business unit of eBay Inc.
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# Copyright 2011 Grid Dynamics
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# Copyright 2011 Eldar Nugaev, Kirill Shileev, Ilya Alekseyev
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import webob
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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from nova.api.openstack import xmlutil
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from nova import compute
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from nova.compute import utils as compute_utils
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from nova import exception
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from nova import network
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from nova.openstack.common.gettextutils import _
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from nova.openstack.common import log as logging
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from nova.openstack.common import uuidutils
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LOG = logging.getLogger(__name__)
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authorize = extensions.extension_authorizer('compute', 'floating_ips')
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def make_float_ip(elem):
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elem.set('id')
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elem.set('ip')
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elem.set('pool')
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elem.set('fixed_ip')
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elem.set('instance_id')
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class FloatingIPTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('floating_ip',
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selector='floating_ip')
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make_float_ip(root)
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return xmlutil.MasterTemplate(root, 1)
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class FloatingIPsTemplate(xmlutil.TemplateBuilder):
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def construct(self):
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root = xmlutil.TemplateElement('floating_ips')
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elem = xmlutil.SubTemplateElement(root, 'floating_ip',
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selector='floating_ips')
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make_float_ip(elem)
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return xmlutil.MasterTemplate(root, 1)
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def _translate_floating_ip_view(floating_ip):
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result = {
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'id': floating_ip['id'],
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'ip': floating_ip['address'],
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'pool': floating_ip['pool'],
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}
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try:
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result['fixed_ip'] = floating_ip['fixed_ip']['address']
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except (TypeError, KeyError, AttributeError):
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result['fixed_ip'] = None
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try:
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result['instance_id'] = floating_ip['instance']['uuid']
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except (TypeError, KeyError, AttributeError):
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result['instance_id'] = None
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return {'floating_ip': result}
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def _translate_floating_ips_view(floating_ips):
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return {'floating_ips': [_translate_floating_ip_view(ip)['floating_ip']
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for ip in floating_ips]}
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def get_instance_by_floating_ip_addr(self, context, address):
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snagiibfa = self.network_api.get_instance_id_by_floating_address
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instance_id = snagiibfa(context, address)
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if instance_id:
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return self.compute_api.get(context, instance_id)
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def disassociate_floating_ip(self, context, instance, address):
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try:
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self.network_api.disassociate_floating_ip(context, instance, address)
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except exception.NotAuthorized:
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raise webob.exc.HTTPForbidden()
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except exception.CannotDisassociateAutoAssignedFloatingIP:
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msg = _('Cannot disassociate auto assigned floating ip')
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raise webob.exc.HTTPForbidden(explanation=msg)
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class FloatingIPController(object):
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"""The Floating IPs API controller for the OpenStack API."""
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def __init__(self):
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self.compute_api = compute.API()
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self.network_api = network.API()
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super(FloatingIPController, self).__init__()
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def _normalize_ip(self, floating_ip):
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# NOTE(vish): translate expects instance to be in the floating_ip
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# dict but it is returned in the fixed_ip dict by
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# nova-network
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fixed_ip = floating_ip.get('fixed_ip')
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if 'instance' not in floating_ip:
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if fixed_ip:
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floating_ip['instance'] = fixed_ip['instance']
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else:
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floating_ip['instance'] = None
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@wsgi.serializers(xml=FloatingIPTemplate)
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def show(self, req, id):
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"""Return data about the given floating ip."""
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context = req.environ['nova.context']
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authorize(context)
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try:
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floating_ip = self.network_api.get_floating_ip(context, id)
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except (exception.NotFound, exception.InvalidID):
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msg = _("Floating ip not found for id %s") % id
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raise webob.exc.HTTPNotFound(explanation=msg)
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self._normalize_ip(floating_ip)
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return _translate_floating_ip_view(floating_ip)
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@wsgi.serializers(xml=FloatingIPsTemplate)
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def index(self, req):
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"""Return a list of floating ips allocated to a project."""
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context = req.environ['nova.context']
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authorize(context)
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floating_ips = self.network_api.get_floating_ips_by_project(context)
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for floating_ip in floating_ips:
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self._normalize_ip(floating_ip)
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return _translate_floating_ips_view(floating_ips)
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@wsgi.serializers(xml=FloatingIPTemplate)
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def create(self, req, body=None):
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context = req.environ['nova.context']
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authorize(context)
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pool = None
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if body and 'pool' in body:
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pool = body['pool']
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try:
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address = self.network_api.allocate_floating_ip(context, pool)
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ip = self.network_api.get_floating_ip_by_address(context, address)
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except exception.NoMoreFloatingIps:
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if pool:
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msg = _("No more floating ips in pool %s.") % pool
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else:
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msg = _("No more floating ips available.")
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raise webob.exc.HTTPNotFound(explanation=msg)
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return _translate_floating_ip_view(ip)
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def delete(self, req, id):
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context = req.environ['nova.context']
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authorize(context)
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# get the floating ip object
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try:
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floating_ip = self.network_api.get_floating_ip(context, id)
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except (exception.NotFound, exception.InvalidID):
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msg = _("Floating ip not found for id %s") % id
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raise webob.exc.HTTPNotFound(explanation=msg)
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address = floating_ip['address']
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# get the associated instance object (if any)
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instance = get_instance_by_floating_ip_addr(self, context, address)
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# disassociate if associated
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if floating_ip.get('fixed_ip_id'):
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try:
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disassociate_floating_ip(self, context, instance, address)
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except exception.FloatingIpNotAssociated:
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LOG.info(_("Floating ip %s has been disassociated") % address)
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# release ip from project
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self.network_api.release_floating_ip(context, address)
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return webob.Response(status_int=202)
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def _get_ip_by_id(self, context, value):
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"""Checks that value is id and then returns its address."""
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return self.network_api.get_floating_ip(context, value)['address']
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class FloatingIPActionController(wsgi.Controller):
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def __init__(self, ext_mgr=None, *args, **kwargs):
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super(FloatingIPActionController, self).__init__(*args, **kwargs)
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self.compute_api = compute.API()
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self.network_api = network.API()
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self.ext_mgr = ext_mgr
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@wsgi.action('addFloatingIp')
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def _add_floating_ip(self, req, id, body):
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"""Associate floating_ip to an instance."""
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context = req.environ['nova.context']
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authorize(context)
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try:
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address = body['addFloatingIp']['address']
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except TypeError:
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msg = _("Missing parameter dict")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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except KeyError:
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msg = _("Address not specified")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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instance = self.compute_api.get(context, id)
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cached_nwinfo = compute_utils.get_nw_info_for_instance(instance)
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if not cached_nwinfo:
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msg = _('No nw_info cache associated with instance')
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raise webob.exc.HTTPBadRequest(explanation=msg)
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fixed_ips = cached_nwinfo.fixed_ips()
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if not fixed_ips:
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msg = _('No fixed ips associated to instance')
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raise webob.exc.HTTPBadRequest(explanation=msg)
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fixed_address = None
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if self.ext_mgr.is_loaded('os-extended-floating-ips'):
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if 'fixed_address' in body['addFloatingIp']:
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fixed_address = body['addFloatingIp']['fixed_address']
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for fixed in fixed_ips:
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if fixed['address'] == fixed_address:
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break
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else:
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msg = _('Specified fixed address not assigned to instance')
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raise webob.exc.HTTPBadRequest(explanation=msg)
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if not fixed_address:
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fixed_address = fixed_ips[0]['address']
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if len(fixed_ips) > 1:
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msg = _('multiple fixed_ips exist, using the first: %s')
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LOG.warning(msg, fixed_address)
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try:
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self.network_api.associate_floating_ip(context, instance,
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floating_address=address,
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fixed_address=fixed_address)
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except exception.FloatingIpAssociated:
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msg = _('floating ip is already associated')
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raise webob.exc.HTTPBadRequest(explanation=msg)
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except exception.NoFloatingIpInterface:
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msg = _('l3driver call to add floating ip failed')
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raise webob.exc.HTTPBadRequest(explanation=msg)
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except (exception.FloatingIpNotFoundForAddress,
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exception.NotAuthorized):
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msg = _('floating ip not found')
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raise webob.exc.HTTPNotFound(explanation=msg)
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except Exception:
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msg = _('Error. Unable to associate floating ip')
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LOG.exception(msg)
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raise webob.exc.HTTPBadRequest(explanation=msg)
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return webob.Response(status_int=202)
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@wsgi.action('removeFloatingIp')
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def _remove_floating_ip(self, req, id, body):
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"""Dissociate floating_ip from an instance."""
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context = req.environ['nova.context']
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authorize(context)
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try:
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address = body['removeFloatingIp']['address']
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except TypeError:
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msg = _("Missing parameter dict")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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except KeyError:
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msg = _("Address not specified")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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# get the floating ip object
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try:
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floating_ip = self.network_api.get_floating_ip_by_address(context,
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address)
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except exception.FloatingIpNotFoundForAddress:
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msg = _("floating ip not found")
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raise webob.exc.HTTPNotFound(explanation=msg)
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# get the associated instance object (if any)
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instance = get_instance_by_floating_ip_addr(self, context, address)
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# disassociate if associated
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if (instance and
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floating_ip.get('fixed_ip_id') and
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(uuidutils.is_uuid_like(id) and
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[instance['uuid'] == id] or
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[instance['id'] == id])[0]):
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try:
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disassociate_floating_ip(self, context, instance, address)
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except exception.FloatingIpNotAssociated:
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msg = _('Floating ip is not associated')
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raise webob.exc.HTTPBadRequest(explanation=msg)
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return webob.Response(status_int=202)
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else:
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msg = _("Floating ip %(address)s is not associated with instance "
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"%(id)s.") % {'address': address, 'id': id}
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raise webob.exc.HTTPUnprocessableEntity(explanation=msg)
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class Floating_ips(extensions.ExtensionDescriptor):
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"""Floating IPs support."""
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name = "FloatingIps"
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alias = "os-floating-ips"
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namespace = "http://docs.openstack.org/compute/ext/floating_ips/api/v1.1"
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updated = "2011-06-16T00:00:00+00:00"
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def get_resources(self):
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resources = []
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res = extensions.ResourceExtension('os-floating-ips',
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FloatingIPController(),
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member_actions={})
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resources.append(res)
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return resources
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def get_controller_extensions(self):
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controller = FloatingIPActionController(self.ext_mgr)
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extension = extensions.ControllerExtension(self, 'servers', controller)
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return [extension]
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