keystone/keystone/contrib/endpoint_filter/controllers.py

301 lines
13 KiB
Python

# Copyright 2013 OpenStack Foundation
#
# 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.
import six
from keystone.catalog import controllers as catalog_controllers
from keystone.common import controller
from keystone.common import dependency
from keystone.common import validation
from keystone.contrib.endpoint_filter import schema
from keystone import exception
from keystone import notifications
from keystone import resource
@dependency.requires('catalog_api', 'endpoint_filter_api', 'resource_api')
class _ControllerBase(controller.V3Controller):
"""Base behaviors for endpoint filter controllers."""
def _get_endpoint_groups_for_project(self, project_id):
# recover the project endpoint group memberships and for each
# membership recover the endpoint group
self.resource_api.get_project(project_id)
try:
refs = self.endpoint_filter_api.list_endpoint_groups_for_project(
project_id)
endpoint_groups = [self.endpoint_filter_api.get_endpoint_group(
ref['endpoint_group_id']) for ref in refs]
return endpoint_groups
except exception.EndpointGroupNotFound:
return []
def _get_endpoints_filtered_by_endpoint_group(self, endpoint_group_id):
endpoints = self.catalog_api.list_endpoints()
filters = self.endpoint_filter_api.get_endpoint_group(
endpoint_group_id)['filters']
filtered_endpoints = []
for endpoint in endpoints:
is_candidate = True
for key, value in six.iteritems(filters):
if endpoint[key] != value:
is_candidate = False
break
if is_candidate:
filtered_endpoints.append(endpoint)
return filtered_endpoints
class EndpointFilterV3Controller(_ControllerBase):
def __init__(self):
super(EndpointFilterV3Controller, self).__init__()
notifications.register_event_callback(
notifications.ACTIONS.deleted, 'project',
self._on_project_or_endpoint_delete)
notifications.register_event_callback(
notifications.ACTIONS.deleted, 'endpoint',
self._on_project_or_endpoint_delete)
def _on_project_or_endpoint_delete(self, service, resource_type, operation,
payload):
project_or_endpoint_id = payload['resource_info']
if resource_type == 'project':
self.endpoint_filter_api.delete_association_by_project(
project_or_endpoint_id)
else:
self.endpoint_filter_api.delete_association_by_endpoint(
project_or_endpoint_id)
@controller.protected()
def add_endpoint_to_project(self, context, project_id, endpoint_id):
"""Establishes an association between an endpoint and a project."""
# NOTE(gyee): we just need to make sure endpoint and project exist
# first. We don't really care whether if project is disabled.
# The relationship can still be established even with a disabled
# project as there are no security implications.
self.catalog_api.get_endpoint(endpoint_id)
self.resource_api.get_project(project_id)
self.endpoint_filter_api.add_endpoint_to_project(endpoint_id,
project_id)
@controller.protected()
def check_endpoint_in_project(self, context, project_id, endpoint_id):
"""Verifies endpoint is currently associated with given project."""
self.catalog_api.get_endpoint(endpoint_id)
self.resource_api.get_project(project_id)
self.endpoint_filter_api.check_endpoint_in_project(endpoint_id,
project_id)
@controller.protected()
def list_endpoints_for_project(self, context, project_id):
"""List all endpoints currently associated with a given project."""
self.resource_api.get_project(project_id)
refs = self.endpoint_filter_api.list_endpoints_for_project(project_id)
filtered_endpoints = {ref['endpoint_id']:
self.catalog_api.get_endpoint(ref['endpoint_id'])
for ref in refs}
# need to recover endpoint_groups associated with project
# then for each endpoint group return the endpoints.
endpoint_groups = self._get_endpoint_groups_for_project(project_id)
for endpoint_group in endpoint_groups:
endpoint_refs = self._get_endpoints_filtered_by_endpoint_group(
endpoint_group['id'])
# now check if any endpoints for current endpoint group are not
# contained in the list of filtered endpoints
for endpoint_ref in endpoint_refs:
if endpoint_ref['id'] not in filtered_endpoints:
filtered_endpoints[endpoint_ref['id']] = endpoint_ref
return catalog_controllers.EndpointV3.wrap_collection(
context, [v for v in six.itervalues(filtered_endpoints)])
@controller.protected()
def remove_endpoint_from_project(self, context, project_id, endpoint_id):
"""Remove the endpoint from the association with given project."""
self.endpoint_filter_api.remove_endpoint_from_project(endpoint_id,
project_id)
@controller.protected()
def list_projects_for_endpoint(self, context, endpoint_id):
"""Return a list of projects associated with the endpoint."""
self.catalog_api.get_endpoint(endpoint_id)
refs = self.endpoint_filter_api.list_projects_for_endpoint(endpoint_id)
projects = [self.resource_api.get_project(
ref['project_id']) for ref in refs]
return resource.controllers.ProjectV3.wrap_collection(context,
projects)
class EndpointGroupV3Controller(_ControllerBase):
collection_name = 'endpoint_groups'
member_name = 'endpoint_group'
VALID_FILTER_KEYS = ['service_id', 'region_id', 'interface']
def __init__(self):
super(EndpointGroupV3Controller, self).__init__()
@classmethod
def base_url(cls, context, path=None):
"""Construct a path and pass it to V3Controller.base_url method."""
path = '/OS-EP-FILTER/' + cls.collection_name
return super(EndpointGroupV3Controller, cls).base_url(context,
path=path)
@controller.protected()
@validation.validated(schema.endpoint_group_create, 'endpoint_group')
def create_endpoint_group(self, context, endpoint_group):
"""Creates an Endpoint Group with the associated filters."""
ref = self._assign_unique_id(self._normalize_dict(endpoint_group))
self._require_attribute(ref, 'filters')
self._require_valid_filter(ref)
ref = self.endpoint_filter_api.create_endpoint_group(ref['id'], ref)
return EndpointGroupV3Controller.wrap_member(context, ref)
def _require_valid_filter(self, endpoint_group):
filters = endpoint_group.get('filters')
for key in six.iterkeys(filters):
if key not in self.VALID_FILTER_KEYS:
raise exception.ValidationError(
attribute=self._valid_filter_keys(),
target='endpoint_group')
def _valid_filter_keys(self):
return ' or '.join(self.VALID_FILTER_KEYS)
@controller.protected()
def get_endpoint_group(self, context, endpoint_group_id):
"""Retrieve the endpoint group associated with the id if exists."""
ref = self.endpoint_filter_api.get_endpoint_group(endpoint_group_id)
return EndpointGroupV3Controller.wrap_member(
context, ref)
@controller.protected()
@validation.validated(schema.endpoint_group_update, 'endpoint_group')
def update_endpoint_group(self, context, endpoint_group_id,
endpoint_group):
"""Update fixed values and/or extend the filters."""
if 'filters' in endpoint_group:
self._require_valid_filter(endpoint_group)
ref = self.endpoint_filter_api.update_endpoint_group(endpoint_group_id,
endpoint_group)
return EndpointGroupV3Controller.wrap_member(
context, ref)
@controller.protected()
def delete_endpoint_group(self, context, endpoint_group_id):
"""Delete endpoint_group."""
self.endpoint_filter_api.delete_endpoint_group(endpoint_group_id)
@controller.protected()
def list_endpoint_groups(self, context):
"""List all endpoint groups."""
refs = self.endpoint_filter_api.list_endpoint_groups()
return EndpointGroupV3Controller.wrap_collection(
context, refs)
@controller.protected()
def list_endpoint_groups_for_project(self, context, project_id):
"""List all endpoint groups associated with a given project."""
return EndpointGroupV3Controller.wrap_collection(
context, self._get_endpoint_groups_for_project(project_id))
@controller.protected()
def list_projects_associated_with_endpoint_group(self,
context,
endpoint_group_id):
"""List all projects associated with endpoint group."""
endpoint_group_refs = (self.endpoint_filter_api.
list_projects_associated_with_endpoint_group(
endpoint_group_id))
projects = []
for endpoint_group_ref in endpoint_group_refs:
project = self.resource_api.get_project(
endpoint_group_ref['project_id'])
if project:
projects.append(project)
return resource.controllers.ProjectV3.wrap_collection(context,
projects)
@controller.protected()
def list_endpoints_associated_with_endpoint_group(self,
context,
endpoint_group_id):
"""List all the endpoints filtered by a specific endpoint group."""
filtered_endpoints = self._get_endpoints_filtered_by_endpoint_group(
endpoint_group_id)
return catalog_controllers.EndpointV3.wrap_collection(
context, filtered_endpoints)
class ProjectEndpointGroupV3Controller(_ControllerBase):
collection_name = 'project_endpoint_groups'
member_name = 'project_endpoint_group'
def __init__(self):
super(ProjectEndpointGroupV3Controller, self).__init__()
notifications.register_event_callback(
notifications.ACTIONS.deleted, 'project',
self._on_project_delete)
def _on_project_delete(self, service, resource_type,
operation, payload):
project_id = payload['resource_info']
(self.endpoint_filter_api.
delete_endpoint_group_association_by_project(
project_id))
@controller.protected()
def get_endpoint_group_in_project(self, context, endpoint_group_id,
project_id):
"""Retrieve the endpoint group associated with the id if exists."""
self.resource_api.get_project(project_id)
self.endpoint_filter_api.get_endpoint_group(endpoint_group_id)
ref = self.endpoint_filter_api.get_endpoint_group_in_project(
endpoint_group_id, project_id)
return ProjectEndpointGroupV3Controller.wrap_member(
context, ref)
@controller.protected()
def add_endpoint_group_to_project(self, context, endpoint_group_id,
project_id):
"""Creates an association between an endpoint group and project."""
self.resource_api.get_project(project_id)
self.endpoint_filter_api.get_endpoint_group(endpoint_group_id)
self.endpoint_filter_api.add_endpoint_group_to_project(
endpoint_group_id, project_id)
@controller.protected()
def remove_endpoint_group_from_project(self, context, endpoint_group_id,
project_id):
"""Remove the endpoint group from associated project."""
self.resource_api.get_project(project_id)
self.endpoint_filter_api.get_endpoint_group(endpoint_group_id)
self.endpoint_filter_api.remove_endpoint_group_from_project(
endpoint_group_id, project_id)
@classmethod
def _add_self_referential_link(cls, context, ref):
url = ('/OS-EP-FILTER/endpoint_groups/%(endpoint_group_id)s'
'/projects/%(project_id)s' % {
'endpoint_group_id': ref['endpoint_group_id'],
'project_id': ref['project_id']})
ref.setdefault('links', {})
ref['links']['self'] = url