OpenStack Study: controllers.py

**** CubicPower OpenStack Study ****

# 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.

from keystone import assignment

from keystone.catalog import controllers as catalog_controllers

from keystone.common import controller

from keystone.common import dependency

@dependency.requires('assignment_api', 'catalog_api', 'endpoint_filter_api')

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class EndpointFilterV3Controller(controller.V3Controller):

@controller.protected()

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    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.assignment_api.get_project(project_id)

        # NOTE(gyee): we may need to cleanup any existing project-endpoint

        # associations here if either project or endpoint is not found.

        self.endpoint_filter_api.add_endpoint_to_project(endpoint_id,

                                                         project_id)

    @controller.protected()

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    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.assignment_api.get_project(project_id)

        # TODO(gyee): we may need to cleanup any existing project-endpoint

        # associations here if either project or endpoint is not found.

        self.endpoint_filter_api.check_endpoint_in_project(endpoint_id,

                                                           project_id)

    @controller.protected()

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    def list_endpoints_for_project(self, context, project_id):

        """Lists all endpoints currently associated with a given project."""

        self.assignment_api.get_project(project_id)

        refs = self.endpoint_filter_api.list_endpoints_for_project(project_id)

        endpoints = [self.catalog_api.get_endpoint(

            ref.endpoint_id) for ref in refs]

        return catalog_controllers.EndpointV3.wrap_collection(context,

                                                              endpoints)

    @controller.protected()

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    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()

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    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.assignment_api.get_project(

            ref.project_id) for ref in refs]

        return assignment.controllers.ProjectV3.wrap_collection(context,

                                                                projects)