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OpenStack Study: keypairs.py**** CubicPower OpenStack Study ****
# Copyright 2011 OpenStack Foundation # All Rights Reserved. # # 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. """Keypair management extension.""" import webob import webob.exc from nova.api.openstack.compute import servers from nova.api.openstack import extensions from nova.api.openstack import wsgi from nova.api.openstack import xmlutil from nova.compute import api as compute_api from nova import exception from nova.openstack.common.gettextutils import _ authorize = extensions.extension_authorizer('compute', 'keypairs') soft_authorize = extensions.soft_extension_authorizer('compute', 'keypairs')
**** CubicPower OpenStack Study **** class KeypairTemplate(xmlutil.TemplateBuilder):
**** CubicPower OpenStack Study **** def construct(self): return xmlutil.MasterTemplate(xmlutil.make_flat_dict('keypair'), 1)
**** CubicPower OpenStack Study **** class KeypairsTemplate(xmlutil.TemplateBuilder):
**** CubicPower OpenStack Study **** def construct(self): root = xmlutil.TemplateElement('keypairs') elem = xmlutil.make_flat_dict('keypair', selector='keypairs', subselector='keypair') root.append(elem) return xmlutil.MasterTemplate(root, 1)
**** CubicPower OpenStack Study **** class KeypairController(object): """Keypair API controller for the OpenStack API."""
**** CubicPower OpenStack Study **** def __init__(self): self.api = compute_api.KeypairAPI()
**** CubicPower OpenStack Study **** def _filter_keypair(self, keypair, **attrs): clean = { 'name': keypair.name, 'public_key': keypair.public_key, 'fingerprint': keypair.fingerprint, } for attr in attrs: clean[attr] = keypair[attr] return clean @wsgi.serializers(xml=KeypairTemplate)
**** CubicPower OpenStack Study **** def create(self, req, body): """Create or import keypair. Sending name will generate a key and return private_key and fingerprint. You can send a public_key to add an existing ssh key params: keypair object with: name (required) - string public_key (optional) - string """ context = req.environ['nova.context'] authorize(context, action='create') try: params = body['keypair'] name = params['name'] except KeyError: msg = _("Invalid request body") raise webob.exc.HTTPBadRequest(explanation=msg) try: if 'public_key' in params: keypair = self.api.import_key_pair(context, context.user_id, name, params['public_key']) keypair = self._filter_keypair(keypair, user_id=True) else: keypair, private_key = self.api.create_key_pair( context, context.user_id, name) keypair = self._filter_keypair(keypair, user_id=True) keypair['private_key'] = private_key return {'keypair': keypair} except exception.KeypairLimitExceeded: msg = _("Quota exceeded, too many key pairs.") raise webob.exc.HTTPRequestEntityTooLarge( explanation=msg, headers={'Retry-After': 0}) except exception.InvalidKeypair as exc: raise webob.exc.HTTPBadRequest(explanation=exc.format_message()) except exception.KeyPairExists as exc: raise webob.exc.HTTPConflict(explanation=exc.format_message())
**** CubicPower OpenStack Study **** def delete(self, req, id): """Delete a keypair with a given name.""" context = req.environ['nova.context'] authorize(context, action='delete') try: self.api.delete_key_pair(context, context.user_id, id) except exception.KeypairNotFound: raise webob.exc.HTTPNotFound() return webob.Response(status_int=202) @wsgi.serializers(xml=KeypairTemplate)
**** CubicPower OpenStack Study **** def show(self, req, id): """Return data for the given key name.""" context = req.environ['nova.context'] authorize(context, action='show') try: keypair = self.api.get_key_pair(context, context.user_id, id) except exception.KeypairNotFound: raise webob.exc.HTTPNotFound() return {'keypair': keypair} @wsgi.serializers(xml=KeypairsTemplate)
**** CubicPower OpenStack Study **** def index(self, req): """List of keypairs for a user.""" context = req.environ['nova.context'] authorize(context, action='index') key_pairs = self.api.get_key_pairs(context, context.user_id) rval = [] for key_pair in key_pairs: rval.append({'keypair': self._filter_keypair(key_pair)}) return {'keypairs': rval}
**** CubicPower OpenStack Study **** class ServerKeyNameTemplate(xmlutil.TemplateBuilder):
**** CubicPower OpenStack Study **** def construct(self): root = xmlutil.TemplateElement('server') root.set('key_name', 'key_name') return xmlutil.SlaveTemplate(root, 1)
**** CubicPower OpenStack Study **** class ServersKeyNameTemplate(xmlutil.TemplateBuilder):
**** CubicPower OpenStack Study **** def construct(self): root = xmlutil.TemplateElement('servers') elem = xmlutil.SubTemplateElement(root, 'server', selector='servers') elem.set('key_name', 'key_name') return xmlutil.SlaveTemplate(root, 1)
**** CubicPower OpenStack Study **** class Controller(servers.Controller):
**** CubicPower OpenStack Study **** def _add_key_name(self, req, servers): for server in servers: db_server = req.get_db_instance(server['id']) # server['id'] is guaranteed to be in the cache due to # the core API adding it in its 'show'/'detail' methods. server['key_name'] = db_server['key_name']
**** CubicPower OpenStack Study **** def _show(self, req, resp_obj): if 'server' in resp_obj.obj: resp_obj.attach(xml=ServerKeyNameTemplate()) server = resp_obj.obj['server'] self._add_key_name(req, [server]) @wsgi.extends
**** CubicPower OpenStack Study **** def show(self, req, resp_obj, id): context = req.environ['nova.context'] if soft_authorize(context): self._show(req, resp_obj) @wsgi.extends
**** CubicPower OpenStack Study **** def detail(self, req, resp_obj): context = req.environ['nova.context'] if 'servers' in resp_obj.obj and soft_authorize(context): resp_obj.attach(xml=ServersKeyNameTemplate()) servers = resp_obj.obj['servers'] self._add_key_name(req, servers)
**** CubicPower OpenStack Study **** class Keypairs(extensions.ExtensionDescriptor): """Keypair Support.""" name = "Keypairs" alias = "os-keypairs" namespace = "http://docs.openstack.org/compute/ext/keypairs/api/v1.1" updated = "2011-08-08T00:00:00+00:00"
**** CubicPower OpenStack Study **** def get_resources(self): resources = [] res = extensions.ResourceExtension( 'os-keypairs', KeypairController()) resources.append(res) return resources
**** CubicPower OpenStack Study **** def get_controller_extensions(self): controller = Controller(self.ext_mgr) extension = extensions.ControllerExtension(self, 'servers', controller) return [extension]
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