Source code for octavia.api.v2.controllers.amphora

#    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_config import cfg
from oslo_log import log as logging
import oslo_messaging as messaging
from oslo_utils import excutils
from pecan import expose as pecan_expose
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 amphora as amp_types
from octavia.common import constants
from octavia.common import exceptions
from octavia.common import rpc
from octavia.db import api as db_api

CONF = cfg.CONF
LOG = logging.getLogger(__name__)


[docs]class AmphoraController(base.BaseController): RBAC_TYPE = constants.RBAC_AMPHORA def __init__(self): super().__init__() topic = cfg.CONF.oslo_messaging.topic self.target = messaging.Target( namespace=constants.RPC_NAMESPACE_CONTROLLER_AGENT, topic=topic, version="1.0", fanout=False) self.client = rpc.get_client(self.target)
[docs] @wsme_pecan.wsexpose(amp_types.AmphoraRootResponse, wtypes.text, [wtypes.text], ignore_extra_args=True) def get_one(self, id, fields=None): """Gets a single amphora's details.""" context = pecan_request.context.get('octavia_context') db_amp = self._get_db_amp(context.session, id, show_deleted=False) self._auth_validate_action(context, context.project_id, constants.RBAC_GET_ONE) result = self._convert_db_to_type( db_amp, amp_types.AmphoraResponse) if fields is not None: result = self._filter_fields([result], fields)[0] return amp_types.AmphoraRootResponse(amphora=result)
[docs] @wsme_pecan.wsexpose(amp_types.AmphoraeRootResponse, [wtypes.text], ignore_extra_args=True) def get_all(self, fields=None): """Gets all amphorae.""" pcontext = pecan_request.context context = pcontext.get('octavia_context') self._auth_validate_action(context, context.project_id, constants.RBAC_GET_ALL) db_amp, links = self.repositories.amphora.get_all_API_list( context.session, show_deleted=False, pagination_helper=pcontext.get(constants.PAGINATION_HELPER)) result = self._convert_db_to_type( db_amp, [amp_types.AmphoraResponse]) if fields is not None: result = self._filter_fields(result, fields) return amp_types.AmphoraeRootResponse( amphorae=result, amphorae_links=links)
[docs] @wsme_pecan.wsexpose(None, wtypes.text, status_code=204) def delete(self, id): """Deletes an amphora.""" context = pecan_request.context.get('octavia_context') self._auth_validate_action(context, context.project_id, constants.RBAC_DELETE) with db_api.get_lock_session() as lock_session: try: self.repositories.amphora.test_and_set_status_for_delete( lock_session, id) except sa_exception.NoResultFound as e: raise exceptions.NotFound(resource='Amphora', id=id) from e LOG.info("Sending delete amphora %s to the queue.", id) payload = {constants.AMPHORA_ID: id} self.client.cast({}, 'delete_amphora', **payload)
@pecan_expose() def _lookup(self, amphora_id, *remainder): """Overridden pecan _lookup method for custom routing. Currently it checks if this was a failover request and routes the request to the FailoverController. """ if amphora_id and remainder: controller = remainder[0] remainder = remainder[1:] if controller == 'config': return AmphoraUpdateController(amp_id=amphora_id), remainder if controller == 'failover': return FailoverController(amp_id=amphora_id), remainder if controller == 'stats': return AmphoraStatsController(amp_id=amphora_id), remainder return None
[docs]class FailoverController(base.BaseController): RBAC_TYPE = constants.RBAC_AMPHORA def __init__(self, amp_id): super().__init__() if CONF.api_settings.default_provider_driver == constants.AMPHORAV1: topic = cfg.CONF.oslo_messaging.topic version = "1.0" else: topic = constants.TOPIC_AMPHORA_V2 version = "2.0" self.target = messaging.Target( namespace=constants.RPC_NAMESPACE_CONTROLLER_AGENT, topic=topic, version=version, fanout=False) self.client = rpc.get_client(self.target) self.amp_id = amp_id
[docs] @wsme_pecan.wsexpose(None, wtypes.text, status_code=202) def put(self): """Fails over an amphora""" pcontext = pecan_request.context context = pcontext.get('octavia_context') db_amp = self._get_db_amp(context.session, self.amp_id, show_deleted=False) self._auth_validate_action( context, db_amp.load_balancer.project_id, constants.RBAC_PUT_FAILOVER) self.repositories.load_balancer.test_and_set_provisioning_status( context.session, db_amp.load_balancer_id, status=constants.PENDING_UPDATE, raise_exception=True) try: LOG.info("Sending failover request for amphora %s to the queue", self.amp_id) payload = {constants.AMPHORA_ID: db_amp.id} self.client.cast({}, 'failover_amphora', **payload) except Exception: with excutils.save_and_reraise_exception(reraise=False): self.repositories.load_balancer.update( context.session, db_amp.load_balancer.id, provisioning_status=constants.ERROR)
[docs]class AmphoraUpdateController(base.BaseController): RBAC_TYPE = constants.RBAC_AMPHORA def __init__(self, amp_id): super().__init__() if CONF.api_settings.default_provider_driver == constants.AMPHORAV1: topic = cfg.CONF.oslo_messaging.topic version = "1.0" else: topic = constants.TOPIC_AMPHORA_V2 version = "2.0" self.transport = messaging.get_rpc_transport(cfg.CONF) self.target = messaging.Target( namespace=constants.RPC_NAMESPACE_CONTROLLER_AGENT, topic=topic, version=version, fanout=False) self.client = messaging.RPCClient(self.transport, target=self.target) self.amp_id = amp_id
[docs] @wsme_pecan.wsexpose(None, wtypes.text, status_code=202) def put(self): """Update amphora agent configuration""" pcontext = pecan_request.context context = pcontext.get('octavia_context') db_amp = self._get_db_amp(context.session, self.amp_id, show_deleted=False) self._auth_validate_action( context, db_amp.load_balancer.project_id, constants.RBAC_PUT_CONFIG) try: LOG.info("Sending amphora agent update request for amphora %s to " "the queue.", self.amp_id) payload = {constants.AMPHORA_ID: db_amp.id} self.client.cast({}, 'update_amphora_agent_config', **payload) except Exception: with excutils.save_and_reraise_exception(reraise=True): LOG.error("Unable to send amphora agent update request for " "amphora %s to the queue.", self.amp_id)
[docs]class AmphoraStatsController(base.BaseController): RBAC_TYPE = constants.RBAC_AMPHORA def __init__(self, amp_id): super().__init__() self.amp_id = amp_id
[docs] @wsme_pecan.wsexpose(amp_types.StatisticsRootResponse, wtypes.text, status_code=200) def get(self): context = pecan_request.context.get('octavia_context') self._auth_validate_action(context, context.project_id, constants.RBAC_GET_STATS) stats = self.repositories.get_amphora_stats(context.session, self.amp_id) if not stats: raise exceptions.NotFound(resource='Amphora stats for', id=self.amp_id) wsme_stats = [] for stat in stats: wsme_stats.append(amp_types.AmphoraStatisticsResponse(**stat)) return amp_types.StatisticsRootResponse(amphora_stats=wsme_stats)