230 lines
7.7 KiB
Python
230 lines
7.7 KiB
Python
# 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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"""Placement API handlers for resource providers."""
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import copy
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from oslo_db import exception as db_exc
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from oslo_serialization import jsonutils
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from oslo_utils import uuidutils
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import webob
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from nova.api.openstack.placement import util
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from nova import exception
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from nova.i18n import _
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from nova import objects
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POST_RESOURCE_PROVIDER_SCHEMA = {
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"type": "object",
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"properties": {
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"name": {
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"type": "string"
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},
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"uuid": {
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"type": "string",
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"format": "uuid"
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}
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},
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"required": [
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"name"
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],
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"additionalProperties": False,
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}
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# Remove uuid to create the schema for PUTting a resource provider
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PUT_RESOURCE_PROVIDER_SCHEMA = copy.deepcopy(POST_RESOURCE_PROVIDER_SCHEMA)
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PUT_RESOURCE_PROVIDER_SCHEMA['properties'].pop('uuid')
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def _serialize_links(environ, resource_provider):
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url = util.resource_provider_url(environ, resource_provider)
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links = [{'rel': 'self', 'href': url}]
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for rel in ('aggregates', 'inventories', 'usages'):
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links.append({'rel': rel, 'href': '%s/%s' % (url, rel)})
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return links
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def _serialize_provider(environ, resource_provider):
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data = {
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'uuid': resource_provider.uuid,
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'name': resource_provider.name,
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'generation': resource_provider.generation,
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'links': _serialize_links(environ, resource_provider)
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}
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return data
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def _serialize_providers(environ, resource_providers):
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output = []
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for provider in resource_providers:
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provider_data = _serialize_provider(environ, provider)
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output.append(provider_data)
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return {"resource_providers": output}
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@webob.dec.wsgify
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@util.require_content('application/json')
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def create_resource_provider(req):
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"""POST to create a resource provider.
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On success return a 201 response with an empty body and a location
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header pointing to the newly created resource provider.
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"""
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context = req.environ['placement.context']
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data = util.extract_json(req.body, POST_RESOURCE_PROVIDER_SCHEMA)
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try:
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uuid = data.get('uuid', uuidutils.generate_uuid())
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resource_provider = objects.ResourceProvider(
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context, name=data['name'], uuid=uuid)
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resource_provider.create()
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except db_exc.DBDuplicateEntry as exc:
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raise webob.exc.HTTPConflict(
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_('Conflicting resource provider already exists: %(error)s') %
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{'error': exc},
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json_formatter=util.json_error_formatter)
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except exception.ObjectActionError as exc:
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raise webob.exc.HTTPBadRequest(
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_('Unable to create resource provider %(rp_uuid)s: %(error)s') %
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{'rp_uuid': uuid, 'error': exc},
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json_formatter=util.json_error_formatter)
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req.response.location = util.resource_provider_url(
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req.environ, resource_provider)
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req.response.status = 201
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req.response.content_type = None
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return req.response
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@webob.dec.wsgify
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def delete_resource_provider(req):
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"""DELETE to destroy a single resource provider.
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On success return a 204 and an empty body.
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"""
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uuid = util.wsgi_path_item(req.environ, 'uuid')
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context = req.environ['placement.context']
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# The containing application will catch a not found here.
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try:
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resource_provider = objects.ResourceProvider.get_by_uuid(
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context, uuid)
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resource_provider.destroy()
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except exception.ResourceProviderInUse as exc:
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raise webob.exc.HTTPConflict(
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_('Unable to delete resource provider %(rp_uuid)s: %(error)s') %
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{'rp_uuid': uuid, 'error': exc},
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json_formatter=util.json_error_formatter)
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except exception.NotFound as exc:
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raise webob.exc.HTTPNotFound(
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_("No resource provider with uuid %s found for delete") % uuid)
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req.response.status = 204
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req.response.content_type = None
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return req.response
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@webob.dec.wsgify
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@util.check_accept('application/json')
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def get_resource_provider(req):
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"""Get a single resource provider.
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On success return a 200 with an application/json body representing
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the resource provider.
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"""
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uuid = util.wsgi_path_item(req.environ, 'uuid')
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# The containing application will catch a not found here.
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context = req.environ['placement.context']
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resource_provider = objects.ResourceProvider.get_by_uuid(
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context, uuid)
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req.response.body = jsonutils.dumps(
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_serialize_provider(req.environ, resource_provider))
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req.response.content_type = 'application/json'
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return req.response
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@webob.dec.wsgify
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@util.check_accept('application/json')
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def list_resource_providers(req):
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"""GET a list of resource providers.
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On success return a 200 and an application/json body representing
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a collection of resource providers.
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"""
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context = req.environ['placement.context']
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allowed_filters = set(objects.ResourceProviderList.allowed_filters)
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passed_filters = set(req.GET.keys())
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invalid_filters = passed_filters - allowed_filters
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if invalid_filters:
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raise webob.exc.HTTPBadRequest(
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_('Invalid filters: %(filters)s') %
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{'filters': ', '.join(invalid_filters)},
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json_formatter=util.json_error_formatter)
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if 'uuid' in req.GET and not uuidutils.is_uuid_like(req.GET['uuid']):
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raise webob.exc.HTTPBadRequest(
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_('Invalid uuid value: %(uuid)s') % {'uuid': req.GET['uuid']},
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json_formatter=util.json_error_formatter)
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filters = {}
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for attr in objects.ResourceProviderList.allowed_filters:
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if attr in req.GET:
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filters[attr] = req.GET[attr]
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resource_providers = objects.ResourceProviderList.get_all_by_filters(
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context, filters)
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response = req.response
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response.body = jsonutils.dumps(_serialize_providers(
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req.environ, resource_providers))
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response.content_type = 'application/json'
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return response
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@webob.dec.wsgify
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@util.require_content('application/json')
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def update_resource_provider(req):
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"""PUT to update a single resource provider.
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On success return a 200 response with a representation of the updated
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resource provider.
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"""
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uuid = util.wsgi_path_item(req.environ, 'uuid')
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context = req.environ['placement.context']
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# The containing application will catch a not found here.
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resource_provider = objects.ResourceProvider.get_by_uuid(
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context, uuid)
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data = util.extract_json(req.body, PUT_RESOURCE_PROVIDER_SCHEMA)
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resource_provider.name = data['name']
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try:
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resource_provider.save()
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except db_exc.DBDuplicateEntry as exc:
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raise webob.exc.HTTPConflict(
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_('Conflicting resource provider already exists: %(error)s') %
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{'error': exc},
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json_formatter=util.json_error_formatter)
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except exception.ObjectActionError as exc:
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raise webob.exc.HTTPBadRequest(
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_('Unable to save resource provider %(rp_uuid)s: %(error)s') %
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{'rp_uuid': uuid, 'error': exc},
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json_formatter=util.json_error_formatter)
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req.response.body = jsonutils.dumps(
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_serialize_provider(req.environ, resource_provider))
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req.response.status = 200
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req.response.content_type = 'application/json'
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return req.response
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