261 lines
8.9 KiB
Python
261 lines
8.9 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack LLC.
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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 import exception
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from nova import log as logging
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from nova import network
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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):
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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):
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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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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 _get_fixed_ip(self, context, fixed_ip_id):
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if fixed_ip_id is None:
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return None
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try:
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return self.network_api.get_fixed_ip(context, fixed_ip_id)
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except exception.FixedIpNotFound:
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return None
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def _get_instance(self, context, instance_id):
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return self.compute_api.get(context, instance_id)
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def _set_metadata(self, context, floating_ip):
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fixed_ip_id = floating_ip['fixed_ip_id']
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floating_ip['fixed_ip'] = self._get_fixed_ip(context,
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fixed_ip_id)
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instance_id = None
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if floating_ip['fixed_ip']:
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instance_id = floating_ip['fixed_ip']['instance_id']
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if instance_id:
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floating_ip['instance'] = self._get_instance(context,
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instance_id)
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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:
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raise webob.exc.HTTPNotFound()
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self._set_metadata(context, 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._set_metadata(context, 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.HTTPBadRequest(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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floating_ip = self.network_api.get_floating_ip(context, id)
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if floating_ip.get('fixed_ip_id'):
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self.network_api.disassociate_floating_ip(context,
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floating_ip['address'])
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self.network_api.release_floating_ip(context,
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address=floating_ip['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, *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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@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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try:
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self.compute_api.associate_floating_ip(context, instance,
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address)
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except exception.FixedIpNotFoundForInstance:
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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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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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floating_ip = self.network_api.get_floating_ip_by_address(context,
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address)
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if floating_ip.get('fixed_ip_id'):
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try:
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self.network_api.disassociate_floating_ip(context, address)
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except exception.NotAuthorized:
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raise webob.exc.HTTPUnauthorized()
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return webob.Response(status_int=202)
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class Floating_ips(extensions.ExtensionDescriptor):
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"""Floating IPs support"""
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name = "Floating_ips"
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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()
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extension = extensions.ControllerExtension(self, 'servers', controller)
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return [extension]
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