cinder/cinder/api/v3/group_types.py

226 lines
9.3 KiB
Python

# Copyright (c) 2016 EMC Corporation
#
# 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.
"""The group type & group type specs controller."""
from http import HTTPStatus
from oslo_utils import strutils
import webob
from webob import exc
from cinder.api import api_utils
from cinder.api import common
from cinder.api import microversions as mv
from cinder.api.openstack import wsgi
from cinder.api.schemas import group_types as group_type
from cinder.api.v3.views import group_types as views_types
from cinder.api import validation
from cinder import exception
from cinder.i18n import _
from cinder.policies import group_types as policy
from cinder import rpc
from cinder import utils
from cinder.volume import group_types
class GroupTypesController(wsgi.Controller):
"""The group types API controller for the OpenStack API."""
_view_builder_class = views_types.ViewBuilder
@utils.if_notifications_enabled
def _notify_group_type_error(self, context, method, err,
group_type=None, id=None, name=None):
payload = dict(
group_types=group_type, name=name, id=id, error_message=err)
rpc.get_notifier('groupType').error(context, method, payload)
@utils.if_notifications_enabled
def _notify_group_type_info(self, context, method, group_type):
payload = dict(group_types=group_type)
rpc.get_notifier('groupType').info(context, method, payload)
@wsgi.Controller.api_version(mv.GROUP_TYPE)
@wsgi.response(HTTPStatus.ACCEPTED)
@validation.schema(group_type.create)
def create(self, req, body):
"""Creates a new group type."""
context = req.environ['cinder.context']
context.authorize(policy.MANAGE_POLICY)
grp_type = body['group_type']
name = grp_type['name']
description = grp_type.get('description')
specs = grp_type.get('group_specs', {})
is_public = strutils.bool_from_string(grp_type.get('is_public', True),
strict=True)
try:
group_types.create(context,
name,
specs,
is_public,
description=description)
grp_type = group_types.get_group_type_by_name(context, name)
req.cache_resource(grp_type, name='group_types')
self._notify_group_type_info(
context, 'group_type.create', grp_type)
except exception.GroupTypeExists as err:
self._notify_group_type_error(
context, 'group_type.create', err, group_type=grp_type)
raise webob.exc.HTTPConflict(explanation=str(err))
except exception.GroupTypeNotFoundByName as err:
self._notify_group_type_error(
context, 'group_type.create', err, name=name)
raise webob.exc.HTTPNotFound(explanation=err.msg)
return self._view_builder.show(req, grp_type)
@wsgi.Controller.api_version(mv.GROUP_TYPE)
@validation.schema(group_type.update)
def update(self, req, id, body):
# Update description for a given group type.
context = req.environ['cinder.context']
context.authorize(policy.MANAGE_POLICY)
grp_type = body['group_type']
description = grp_type.get('description')
name = grp_type.get('name')
is_public = grp_type.get('is_public')
if is_public is not None:
is_public = strutils.bool_from_string(is_public, strict=True)
# If name specified, name can not be empty.
if name and len(name.strip()) == 0:
msg = _("Group type name can not be empty.")
raise webob.exc.HTTPBadRequest(explanation=msg)
# Name, description and is_public can not be None.
# Specify one of them, or a combination thereof.
if name is None and description is None and is_public is None:
msg = _("Specify group type name, description or "
"a combination thereof.")
raise webob.exc.HTTPBadRequest(explanation=msg)
try:
group_types.update(context, id, name, description,
is_public=is_public)
# Get the updated
grp_type = group_types.get_group_type(context, id)
req.cache_resource(grp_type, name='group_types')
self._notify_group_type_info(
context, 'group_type.update', grp_type)
except exception.GroupTypeNotFound as err:
self._notify_group_type_error(
context, 'group_type.update', err, id=id)
raise webob.exc.HTTPNotFound(explanation=str(err))
except exception.GroupTypeExists as err:
self._notify_group_type_error(
context, 'group_type.update', err, group_type=grp_type)
raise webob.exc.HTTPConflict(explanation=str(err))
except exception.GroupTypeUpdateFailed as err:
self._notify_group_type_error(
context, 'group_type.update', err, group_type=grp_type)
raise webob.exc.HTTPInternalServerError(
explanation=str(err))
return self._view_builder.show(req, grp_type)
@wsgi.Controller.api_version(mv.GROUP_TYPE)
def delete(self, req, id):
"""Deletes an existing group type."""
context = req.environ['cinder.context']
context.authorize(policy.MANAGE_POLICY)
try:
grp_type = group_types.get_group_type(context, id)
group_types.destroy(context, grp_type['id'])
self._notify_group_type_info(
context, 'group_type.delete', grp_type)
except exception.GroupTypeInUse as err:
self._notify_group_type_error(
context, 'group_type.delete', err, group_type=grp_type)
msg = _('Target group type is still in use.')
raise webob.exc.HTTPBadRequest(explanation=msg)
except exception.GroupTypeNotFound as err:
self._notify_group_type_error(
context, 'group_type.delete', err, id=id)
raise webob.exc.HTTPNotFound(explanation=err.msg)
return webob.Response(status_int=HTTPStatus.ACCEPTED)
@wsgi.Controller.api_version(mv.GROUP_TYPE)
def index(self, req):
"""Returns the list of group types."""
limited_types = self._get_group_types(req)
req.cache_resource(limited_types, name='group_types')
return self._view_builder.index(req, limited_types)
@wsgi.Controller.api_version(mv.GROUP_TYPE)
def show(self, req, id):
"""Return a single group type item."""
context = req.environ['cinder.context']
# get default group type
if id is not None and id == 'default':
grp_type = group_types.get_default_group_type()
if not grp_type:
msg = _("Default group type can not be found.")
raise exc.HTTPNotFound(explanation=msg)
req.cache_resource(grp_type, name='group_types')
else:
try:
grp_type = group_types.get_group_type(context, id)
req.cache_resource(grp_type, name='group_types')
except exception.GroupTypeNotFound as error:
raise exc.HTTPNotFound(explanation=error.msg)
return self._view_builder.show(req, grp_type)
def _get_group_types(self, req):
"""Helper function that returns a list of type dicts."""
params = req.params.copy()
marker, limit, offset = common.get_pagination_params(params)
sort_keys, sort_dirs = common.get_sort_params(params)
filters = {}
context = req.environ['cinder.context']
if context.is_admin:
# Only admin has query access to all group types
filters['is_public'] = api_utils._parse_is_public(
req.params.get('is_public', None))
else:
filters['is_public'] = True
api_utils.remove_invalid_filter_options(
context,
filters,
self._get_grp_type_filter_options())
limited_types = group_types.get_all_group_types(context,
filters=filters,
marker=marker,
limit=limit,
sort_keys=sort_keys,
sort_dirs=sort_dirs,
offset=offset,
list_result=True)
return limited_types
def _get_grp_type_filter_options(self):
"""Return group type search options allowed by non-admin."""
return ['is_public']
def create_resource():
return wsgi.Resource(GroupTypesController())