177 lines
8.1 KiB
Python
177 lines
8.1 KiB
Python
# Copyright 2019 Verizon Media
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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 oslo_db import api as oslo_db_api
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from oslo_db import exception as odb_exceptions
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from oslo_log import log as logging
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from oslo_utils import excutils
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from pecan import request as pecan_request
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from sqlalchemy.orm import exc as sa_exception
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from wsme import types as wtypes
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from wsmeext import pecan as wsme_pecan
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from octavia.api.v2.controllers import base
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from octavia.api.v2.types import availability_zones as availability_zone_types
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from octavia.common import constants
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from octavia.common import exceptions
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from octavia.db import api as db_api
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LOG = logging.getLogger(__name__)
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class AvailabilityZonesController(base.BaseController):
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RBAC_TYPE = constants.RBAC_AVAILABILITY_ZONE
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def __init__(self):
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super(AvailabilityZonesController, self).__init__()
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@wsme_pecan.wsexpose(availability_zone_types.AvailabilityZoneRootResponse,
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wtypes.text, [wtypes.text], ignore_extra_args=True)
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def get_one(self, name, fields=None):
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"""Gets an Availability Zone's detail."""
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context = pecan_request.context.get('octavia_context')
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self._auth_validate_action(context, context.project_id,
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constants.RBAC_GET_ONE)
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if name == constants.NIL_UUID:
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raise exceptions.NotFound(resource='Availability Zone',
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id=constants.NIL_UUID)
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db_availability_zone = self._get_db_availability_zone(
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context.session, name)
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result = self._convert_db_to_type(
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db_availability_zone,
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availability_zone_types.AvailabilityZoneResponse)
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if fields is not None:
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result = self._filter_fields([result], fields)[0]
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return availability_zone_types.AvailabilityZoneRootResponse(
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availability_zone=result)
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@wsme_pecan.wsexpose(availability_zone_types.AvailabilityZonesRootResponse,
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[wtypes.text], ignore_extra_args=True)
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def get_all(self, fields=None):
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"""Lists all Availability Zones."""
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pcontext = pecan_request.context
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context = pcontext.get('octavia_context')
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self._auth_validate_action(context, context.project_id,
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constants.RBAC_GET_ALL)
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db_availability_zones, links = (
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self.repositories.availability_zone.get_all(
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context.session,
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pagination_helper=pcontext.get(constants.PAGINATION_HELPER)))
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result = self._convert_db_to_type(
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db_availability_zones,
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[availability_zone_types.AvailabilityZoneResponse])
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if fields is not None:
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result = self._filter_fields(result, fields)
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return availability_zone_types.AvailabilityZonesRootResponse(
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availability_zones=result, availability_zones_links=links)
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@wsme_pecan.wsexpose(availability_zone_types.AvailabilityZoneRootResponse,
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body=availability_zone_types.AvailabilityZoneRootPOST,
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status_code=201)
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def post(self, availability_zone_):
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"""Creates an Availability Zone."""
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availability_zone = availability_zone_.availability_zone
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context = pecan_request.context.get('octavia_context')
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self._auth_validate_action(context, context.project_id,
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constants.RBAC_POST)
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lock_session = db_api.get_session(autocommit=False)
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try:
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availability_zone_dict = availability_zone.to_dict(
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render_unsets=True)
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db_availability_zone = self.repositories.availability_zone.create(
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lock_session, **availability_zone_dict)
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lock_session.commit()
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except odb_exceptions.DBDuplicateEntry:
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lock_session.rollback()
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raise exceptions.RecordAlreadyExists(field='availability zone',
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name=availability_zone.name)
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except Exception:
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with excutils.save_and_reraise_exception():
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lock_session.rollback()
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result = self._convert_db_to_type(
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db_availability_zone,
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availability_zone_types.AvailabilityZoneResponse)
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return availability_zone_types.AvailabilityZoneRootResponse(
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availability_zone=result)
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@wsme_pecan.wsexpose(availability_zone_types.AvailabilityZoneRootResponse,
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wtypes.text, status_code=200,
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body=availability_zone_types.AvailabilityZoneRootPUT)
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def put(self, name, availability_zone_):
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availability_zone = availability_zone_.availability_zone
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context = pecan_request.context.get('octavia_context')
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self._auth_validate_action(context, context.project_id,
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constants.RBAC_PUT)
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if name == constants.NIL_UUID:
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raise exceptions.NotFound(resource='Availability Zone',
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id=constants.NIL_UUID)
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lock_session = db_api.get_session(autocommit=False)
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try:
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availability_zone_dict = availability_zone.to_dict(
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render_unsets=False)
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if availability_zone_dict:
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self.repositories.availability_zone.update(
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lock_session, name, **availability_zone_dict)
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lock_session.commit()
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except Exception:
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with excutils.save_and_reraise_exception():
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lock_session.rollback()
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# Force SQL alchemy to query the DB, otherwise we get inconsistent
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# results
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context.session.expire_all()
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db_availability_zone = self._get_db_availability_zone(
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context.session, name)
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result = self._convert_db_to_type(
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db_availability_zone,
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availability_zone_types.AvailabilityZoneResponse)
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return availability_zone_types.AvailabilityZoneRootResponse(
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availability_zone=result)
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@oslo_db_api.wrap_db_retry(max_retries=5, retry_on_deadlock=True)
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@wsme_pecan.wsexpose(None, wtypes.text, status_code=204)
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def delete(self, availability_zone_name):
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"""Deletes an Availability Zone"""
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context = pecan_request.context.get('octavia_context')
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self._auth_validate_action(context, context.project_id,
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constants.RBAC_DELETE)
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if availability_zone_name == constants.NIL_UUID:
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raise exceptions.NotFound(resource='Availability Zone',
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id=constants.NIL_UUID)
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serial_session = db_api.get_session(autocommit=False)
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serial_session.connection(
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execution_options={'isolation_level': 'SERIALIZABLE'})
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try:
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self.repositories.availability_zone.delete(
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serial_session, name=availability_zone_name)
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serial_session.commit()
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# Handle when load balancers still reference this availability_zone
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except odb_exceptions.DBReferenceError:
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serial_session.rollback()
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raise exceptions.ObjectInUse(object='Availability Zone',
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id=availability_zone_name)
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except sa_exception.NoResultFound:
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serial_session.rollback()
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raise exceptions.NotFound(resource='Availability Zone',
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id=availability_zone_name)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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LOG.error(
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'Unknown availability_zone delete exception: %s', str(e))
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serial_session.rollback()
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finally:
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serial_session.close()
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