93 lines
3.4 KiB
Python
93 lines
3.4 KiB
Python
# Copyright 2013 OpenStack Foundation
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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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from keystone.common import dependency
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from keystone.common import manager
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from keystone import config
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from keystone import exception
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from keystone.openstack.common.gettextutils import _
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from keystone.openstack.common import log
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CONF = config.CONF
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LOG = log.getLogger(__name__)
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@dependency.provider('example_api')
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class ExampleManager(manager.Manager):
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"""Example Manager.
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See :mod:`keystone.common.manager.Manager` for more details on
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how this dynamically calls the backend.
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"""
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def __init__(self):
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# The following is an example of event callbacks. In this setup,
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# ExampleManager's data model is depended on project's data model.
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# It must create additional aggregates when a new project is created,
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# and it must cleanup data related to the project whenever a project
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# has been deleted.
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#
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# In this example, the project_deleted_callback will be invoked
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# whenever a project has been deleted. Similarly, the
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# project_created_callback will be invoked whenever a new project is
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# created.
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# This information is used when the @dependency.provider decorator acts
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# on the class.
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self.event_callbacks = {
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'deleted': {
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'project': [
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self.project_deleted_callback]},
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'created': {
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'project': [
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self.project_created_callback]}}
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super(ExampleManager, self).__init__(
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'keystone.contrib.example.core.ExampleDriver')
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def project_deleted_callback(self, service, resource_type, operation,
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payload):
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# The code below is merely an example.
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msg = _('Received the following notification: service %(service)s, '
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'resource_type: %(resource_type)s, operation %(operation)s '
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'payload %(payload)s')
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LOG.info(msg, {'service': service, 'resource_type': resource_type,
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'operation': operation, 'payload': payload})
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def project_created_callback(self, service, resource_type, operation,
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payload):
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# The code below is merely an example.
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msg = _('Received the following notification: service %(service)s, '
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'resource_type: %(resource_type)s, operation %(operation)s '
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'payload %(payload)s')
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LOG.info(msg, {'service': service, 'resource_type': resource_type,
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'operation': operation, 'payload': payload})
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class ExampleDriver(object):
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"""Interface description for Example driver."""
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def do_something(self, data):
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"""Do something
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:param data: example data
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:type data: string
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:raises: keystone.exception,
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:returns: None.
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"""
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raise exception.NotImplemented()
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