138 lines
4.5 KiB
Python
138 lines
4.5 KiB
Python
# Copyright 2012 OpenStack Foundation.
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# All Rights Reserved.
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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 neutron.api import extensions
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from neutron.api.v2 import base
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from neutron.common import exceptions
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from neutron.db import servicetype_db
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from neutron.extensions import servicetype
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from neutron import manager
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from neutron.openstack.common import uuidutils
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from neutron.plugins.common import constants
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from neutron.services import service_base
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DUMMY_PLUGIN_NAME = "dummy_plugin"
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RESOURCE_NAME = "dummy"
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COLLECTION_NAME = "%ss" % RESOURCE_NAME
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# Attribute Map for dummy resource
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RESOURCE_ATTRIBUTE_MAP = {
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COLLECTION_NAME: {
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'id': {'allow_post': False, 'allow_put': False,
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'validate': {'type:uuid': None},
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'is_visible': True},
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'name': {'allow_post': True, 'allow_put': True,
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'validate': {'type:string': None},
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'is_visible': True, 'default': ''},
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'tenant_id': {'allow_post': True, 'allow_put': False,
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'required_by_policy': True,
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'is_visible': True},
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'service_type': {'allow_post': True,
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'allow_put': False,
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'validate': {'type:servicetype_ref': None},
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'is_visible': True,
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'default': None}
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}
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}
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class Dummy(object):
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@classmethod
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def get_name(cls):
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return "dummy"
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@classmethod
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def get_alias(cls):
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return "dummy"
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@classmethod
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def get_description(cls):
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return "Dummy stuff"
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@classmethod
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def get_namespace(cls):
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return "http://docs.openstack.org/ext/neutron/dummy/api/v1.0"
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@classmethod
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def get_updated(cls):
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return "2012-11-20T10:00:00-00:00"
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@classmethod
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def get_resources(cls):
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"""Returns Extended Resource for dummy management."""
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q_mgr = manager.NeutronManager.get_instance()
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dummy_inst = q_mgr.get_service_plugins()['DUMMY']
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controller = base.create_resource(
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COLLECTION_NAME, RESOURCE_NAME, dummy_inst,
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RESOURCE_ATTRIBUTE_MAP[COLLECTION_NAME])
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return [extensions.ResourceExtension(COLLECTION_NAME,
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controller)]
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class DummyServicePlugin(service_base.ServicePluginBase):
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"""This is a simple plugin for managing instantes of a fictional 'dummy'
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service. This plugin is provided as a proof-of-concept of how
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advanced service might leverage the service type extension.
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Ideally, instances of real advanced services, such as load balancing
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or VPN will adopt a similar solution.
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"""
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supported_extension_aliases = ['dummy', servicetype.EXT_ALIAS]
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agent_notifiers = {'dummy': 'dummy_agent_notifier'}
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def __init__(self):
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self.svctype_mgr = servicetype_db.ServiceTypeManager.get_instance()
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self.dummys = {}
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def get_plugin_type(self):
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return constants.DUMMY
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def get_plugin_name(self):
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return DUMMY_PLUGIN_NAME
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def get_plugin_description(self):
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return "Neutron Dummy Service Plugin"
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def get_dummys(self, context, filters, fields):
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return self.dummys.values()
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def get_dummy(self, context, id, fields):
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try:
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return self.dummys[id]
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except KeyError:
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raise exceptions.NotFound()
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def create_dummy(self, context, dummy):
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d = dummy['dummy']
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d['id'] = uuidutils.generate_uuid()
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self.dummys[d['id']] = d
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self.svctype_mgr.increase_service_type_refcount(context,
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d['service_type'])
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return d
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def update_dummy(self, context, id, dummy):
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pass
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def delete_dummy(self, context, id):
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try:
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svc_type_id = self.dummys[id]['service_type']
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del self.dummys[id]
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self.svctype_mgr.decrease_service_type_refcount(context,
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svc_type_id)
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except KeyError:
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raise exceptions.NotFound()
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