275 lines
10 KiB
Python
275 lines
10 KiB
Python
# Copyright (c) 2014 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from oslo.serialization import jsonutils as json
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import six
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import webob.exc
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from wsme.rest.json import fromjson
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from wsme.rest.json import tojson
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from glance.api import policy
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from glance.api.v2 import metadef_namespaces as namespaces
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from glance.api.v2.model.metadef_namespace import Namespace
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from glance.api.v2.model.metadef_property_type import PropertyType
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from glance.api.v2.model.metadef_property_type import PropertyTypes
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from glance.common import exception
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from glance.common import utils
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from glance.common import wsgi
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import glance.db
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import glance.gateway
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from glance import i18n
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import glance.notifier
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import glance.openstack.common.log as logging
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import glance.schema
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LOG = logging.getLogger(__name__)
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_LE = i18n._LE
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_LI = i18n._LI
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class NamespacePropertiesController(object):
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def __init__(self, db_api=None, policy_enforcer=None):
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self.db_api = db_api or glance.db.get_api()
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self.policy = policy_enforcer or policy.Enforcer()
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self.gateway = glance.gateway.Gateway(db_api=self.db_api,
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policy_enforcer=self.policy)
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def _to_dict(self, model_property_type):
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# Convert the model PropertyTypes dict to a JSON encoding
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db_property_type_dict = dict()
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db_property_type_dict['schema'] = tojson(
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PropertyType, model_property_type)
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db_property_type_dict['name'] = model_property_type.name
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return db_property_type_dict
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def _to_model(self, db_property_type):
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# Convert the persisted json schema to a dict of PropertyTypes
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property_type = fromjson(
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PropertyType, db_property_type.schema)
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property_type.name = db_property_type.name
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return property_type
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def index(self, req, namespace):
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try:
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filters = dict()
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filters['namespace'] = namespace
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prop_repo = self.gateway.get_metadef_property_repo(req.context)
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db_properties = prop_repo.list(filters=filters)
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property_list = Namespace.to_model_properties(db_properties)
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namespace_properties = PropertyTypes()
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namespace_properties.properties = property_list
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except exception.Forbidden as e:
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.msg)
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except Exception as e:
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LOG.error(utils.exception_to_str(e))
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raise webob.exc.HTTPInternalServerError()
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return namespace_properties
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def show(self, req, namespace, property_name):
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try:
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prop_repo = self.gateway.get_metadef_property_repo(req.context)
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db_property = prop_repo.get(namespace, property_name)
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property = self._to_model(db_property)
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except exception.Forbidden as e:
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.msg)
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except Exception as e:
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LOG.error(utils.exception_to_str(e))
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raise webob.exc.HTTPInternalServerError()
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return property
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def create(self, req, namespace, property_type):
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prop_factory = self.gateway.get_metadef_property_factory(req.context)
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prop_repo = self.gateway.get_metadef_property_repo(req.context)
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try:
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new_property_type = prop_factory.new_namespace_property(
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namespace=namespace, **self._to_dict(property_type))
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prop_repo.add(new_property_type)
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except exception.Forbidden as e:
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.msg)
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except exception.Duplicate as e:
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raise webob.exc.HTTPConflict(explanation=e.msg)
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except Exception as e:
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LOG.error(utils.exception_to_str(e))
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raise webob.exc.HTTPInternalServerError()
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return self._to_model(new_property_type)
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def update(self, req, namespace, property_name, property_type):
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prop_repo = self.gateway.get_metadef_property_repo(req.context)
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try:
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db_property_type = prop_repo.get(namespace, property_name)
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db_property_type.name = property_type.name
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db_property_type.schema = (self._to_dict(property_type))['schema']
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updated_property_type = prop_repo.save(db_property_type)
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except exception.Forbidden as e:
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.msg)
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except exception.Duplicate as e:
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raise webob.exc.HTTPConflict(explanation=e.msg)
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except Exception as e:
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LOG.error(utils.exception_to_str(e))
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raise webob.exc.HTTPInternalServerError()
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return self._to_model(updated_property_type)
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def delete(self, req, namespace, property_name):
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prop_repo = self.gateway.get_metadef_property_repo(req.context)
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try:
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property_type = prop_repo.get(namespace, property_name)
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property_type.delete()
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prop_repo.remove(property_type)
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except exception.Forbidden as e:
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raise webob.exc.HTTPForbidden(explanation=e.msg)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.msg)
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except Exception as e:
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LOG.error(utils.exception_to_str(e))
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raise webob.exc.HTTPInternalServerError()
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class RequestDeserializer(wsgi.JSONRequestDeserializer):
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_disallowed_properties = ['created_at', 'updated_at']
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def __init__(self, schema=None):
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super(RequestDeserializer, self).__init__()
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self.schema = schema or get_schema()
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def _get_request_body(self, request):
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output = super(RequestDeserializer, self).default(request)
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if 'body' not in output:
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msg = _('Body expected in request.')
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raise webob.exc.HTTPBadRequest(explanation=msg)
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return output['body']
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@classmethod
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def _check_allowed(cls, image):
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for key in cls._disallowed_properties:
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if key in image:
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msg = _("Attribute '%s' is read-only.") % key
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raise webob.exc.HTTPForbidden(explanation=msg)
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def create(self, request):
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body = self._get_request_body(request)
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self._check_allowed(body)
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try:
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self.schema.validate(body)
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except exception.InvalidObject as e:
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raise webob.exc.HTTPBadRequest(explanation=e.msg)
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property_type = fromjson(PropertyType, body)
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return dict(property_type=property_type)
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def update(self, request):
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body = self._get_request_body(request)
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self._check_allowed(body)
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try:
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self.schema.validate(body)
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except exception.InvalidObject as e:
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raise webob.exc.HTTPBadRequest(explanation=e.msg)
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property_type = fromjson(PropertyType, body)
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return dict(property_type=property_type)
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class ResponseSerializer(wsgi.JSONResponseSerializer):
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def __init__(self, schema=None):
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super(ResponseSerializer, self).__init__()
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self.schema = schema
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def show(self, response, result):
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property_type_json = tojson(PropertyType, result)
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body = json.dumps(property_type_json, ensure_ascii=False)
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response.unicode_body = six.text_type(body)
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response.content_type = 'application/json'
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def index(self, response, result):
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property_type_json = tojson(PropertyTypes, result)
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body = json.dumps(property_type_json, ensure_ascii=False)
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response.unicode_body = six.text_type(body)
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response.content_type = 'application/json'
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def create(self, response, result):
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response.status_int = 201
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self.show(response, result)
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def update(self, response, result):
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response.status_int = 200
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self.show(response, result)
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def delete(self, response, result):
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response.status_int = 204
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def _get_base_definitions():
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return {
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"positiveInteger": {
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"type": "integer",
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"minimum": 0
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},
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"positiveIntegerDefault0": {
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"allOf": [
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{"$ref": "#/definitions/positiveInteger"},
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{"default": 0}
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]
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},
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"stringArray": {
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"type": "array",
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"items": {"type": "string"},
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"minItems": 1,
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"uniqueItems": True
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}
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}
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def _get_base_properties():
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base_def = namespaces.get_schema_definitions()
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return base_def['property']['additionalProperties']['properties']
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def get_schema():
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definitions = _get_base_definitions()
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properties = _get_base_properties()
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mandatory_attrs = PropertyType.get_mandatory_attrs()
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# name is required attribute when use as single property type
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mandatory_attrs.append('name')
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schema = glance.schema.Schema(
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'property',
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properties,
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required=mandatory_attrs,
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definitions=definitions
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)
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return schema
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def get_collection_schema():
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namespace_properties_schema = get_schema()
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# Property name is a dict key and not a required attribute in
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# individual property schema inside property collections
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namespace_properties_schema.required.remove('name')
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return glance.schema.DictCollectionSchema('properties',
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namespace_properties_schema)
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def create_resource():
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"""NamespaceProperties resource factory method"""
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schema = get_schema()
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deserializer = RequestDeserializer(schema)
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serializer = ResponseSerializer(schema)
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controller = NamespacePropertiesController()
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return wsgi.Resource(controller, deserializer, serializer)
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