# Copyright 2014 Rackspace # Copyright 2016 Blue Box, an IBM Company # # 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. from oslo_db import api as oslo_db_api from oslo_db import exception as odb_exceptions from oslo_log import log as logging from oslo_utils import excutils from oslo_utils import uuidutils from pecan import request as pecan_request from sqlalchemy.orm import exc as sa_exception from wsme import types as wtypes from wsmeext import pecan as wsme_pecan from octavia.api.v2.controllers import base from octavia.api.v2.types import flavors as flavor_types from octavia.common import constants from octavia.common import exceptions from octavia.db import api as db_api LOG = logging.getLogger(__name__) class FlavorsController(base.BaseController): RBAC_TYPE = constants.RBAC_FLAVOR def __init__(self): super(FlavorsController, self).__init__() @wsme_pecan.wsexpose(flavor_types.FlavorRootResponse, wtypes.text, [wtypes.text], ignore_extra_args=True) def get_one(self, id, fields=None): """Gets a flavor's detail.""" context = pecan_request.context.get('octavia_context') self._auth_validate_action(context, context.project_id, constants.RBAC_GET_ONE) if id == constants.NIL_UUID: raise exceptions.NotFound(resource='Flavor', id=constants.NIL_UUID) db_flavor = self._get_db_flavor(context.session, id) result = self._convert_db_to_type(db_flavor, flavor_types.FlavorResponse) if fields is not None: result = self._filter_fields([result], fields)[0] return flavor_types.FlavorRootResponse(flavor=result) @wsme_pecan.wsexpose(flavor_types.FlavorsRootResponse, [wtypes.text], ignore_extra_args=True) def get_all(self, fields=None): """Lists all flavors.""" pcontext = pecan_request.context context = pcontext.get('octavia_context') self._auth_validate_action(context, context.project_id, constants.RBAC_GET_ALL) db_flavors, links = self.repositories.flavor.get_all( context.session, pagination_helper=pcontext.get(constants.PAGINATION_HELPER)) result = self._convert_db_to_type( db_flavors, [flavor_types.FlavorResponse]) if fields is not None: result = self._filter_fields(result, fields) return flavor_types.FlavorsRootResponse( flavors=result, flavors_links=links) @wsme_pecan.wsexpose(flavor_types.FlavorRootResponse, body=flavor_types.FlavorRootPOST, status_code=201) def post(self, flavor_): """Creates a flavor.""" flavor = flavor_.flavor context = pecan_request.context.get('octavia_context') self._auth_validate_action(context, context.project_id, constants.RBAC_POST) # TODO(johnsom) Validate the flavor profile ID lock_session = db_api.get_session(autocommit=False) try: flavor_dict = flavor.to_dict(render_unsets=True) flavor_dict['id'] = uuidutils.generate_uuid() db_flavor = self.repositories.flavor.create(lock_session, **flavor_dict) lock_session.commit() except odb_exceptions.DBDuplicateEntry: lock_session.rollback() raise exceptions.RecordAlreadyExists(field='flavor', name=flavor.name) except Exception: with excutils.save_and_reraise_exception(): lock_session.rollback() result = self._convert_db_to_type(db_flavor, flavor_types.FlavorResponse) return flavor_types.FlavorRootResponse(flavor=result) @wsme_pecan.wsexpose(flavor_types.FlavorRootResponse, wtypes.text, status_code=200, body=flavor_types.FlavorRootPUT) def put(self, id, flavor_): flavor = flavor_.flavor context = pecan_request.context.get('octavia_context') self._auth_validate_action(context, context.project_id, constants.RBAC_PUT) if id == constants.NIL_UUID: raise exceptions.NotFound(resource='Flavor', id=constants.NIL_UUID) lock_session = db_api.get_session(autocommit=False) try: flavor_dict = flavor.to_dict(render_unsets=False) if flavor_dict: self.repositories.flavor.update(lock_session, id, **flavor_dict) lock_session.commit() except Exception: with excutils.save_and_reraise_exception(): lock_session.rollback() # Force SQL alchemy to query the DB, otherwise we get inconsistent # results context.session.expire_all() db_flavor = self._get_db_flavor(context.session, id) result = self._convert_db_to_type(db_flavor, flavor_types.FlavorResponse) return flavor_types.FlavorRootResponse(flavor=result) @oslo_db_api.wrap_db_retry(max_retries=5, retry_on_deadlock=True) @wsme_pecan.wsexpose(None, wtypes.text, status_code=204) def delete(self, flavor_id): """Deletes a Flavor""" context = pecan_request.context.get('octavia_context') self._auth_validate_action(context, context.project_id, constants.RBAC_DELETE) if flavor_id == constants.NIL_UUID: raise exceptions.NotFound(resource='Flavor', id=constants.NIL_UUID) serial_session = db_api.get_session(autocommit=False) serial_session.connection( execution_options={'isolation_level': 'SERIALIZABLE'}) try: self.repositories.flavor.delete(serial_session, id=flavor_id) serial_session.commit() # Handle when load balancers still reference this flavor except odb_exceptions.DBReferenceError: serial_session.rollback() raise exceptions.ObjectInUse(object='Flavor', id=flavor_id) except sa_exception.NoResultFound: serial_session.rollback() raise exceptions.NotFound(resource='Flavor', id=flavor_id) except Exception as e: with excutils.save_and_reraise_exception(): LOG.error('Unknown flavor delete exception: %s', str(e)) serial_session.rollback() finally: serial_session.close()