1151 lines
50 KiB
Python
1151 lines
50 KiB
Python
# Copyright 2015 Hewlett-Packard Development Company, L.P.
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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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#
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from oslo_config import cfg
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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 sqlalchemy.orm import exc as db_exceptions
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from taskflow.listeners import logging as tf_logging
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import tenacity
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from octavia.common import base_taskflow
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from octavia.common import constants
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from octavia.common import exceptions
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from octavia.common import utils
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from octavia.controller.worker.v1.flows import amphora_flows
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from octavia.controller.worker.v1.flows import health_monitor_flows
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from octavia.controller.worker.v1.flows import l7policy_flows
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from octavia.controller.worker.v1.flows import l7rule_flows
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from octavia.controller.worker.v1.flows import listener_flows
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from octavia.controller.worker.v1.flows import load_balancer_flows
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from octavia.controller.worker.v1.flows import member_flows
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from octavia.controller.worker.v1.flows import pool_flows
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from octavia.db import api as db_apis
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from octavia.db import repositories as repo
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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def _is_provisioning_status_pending_update(lb_obj):
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return not lb_obj.provisioning_status == constants.PENDING_UPDATE
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class ControllerWorker(base_taskflow.BaseTaskFlowEngine):
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def __init__(self):
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self._amphora_flows = amphora_flows.AmphoraFlows()
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self._health_monitor_flows = health_monitor_flows.HealthMonitorFlows()
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self._lb_flows = load_balancer_flows.LoadBalancerFlows()
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self._listener_flows = listener_flows.ListenerFlows()
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self._member_flows = member_flows.MemberFlows()
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self._pool_flows = pool_flows.PoolFlows()
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self._l7policy_flows = l7policy_flows.L7PolicyFlows()
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self._l7rule_flows = l7rule_flows.L7RuleFlows()
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self._amphora_repo = repo.AmphoraRepository()
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self._amphora_health_repo = repo.AmphoraHealthRepository()
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self._health_mon_repo = repo.HealthMonitorRepository()
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self._lb_repo = repo.LoadBalancerRepository()
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self._listener_repo = repo.ListenerRepository()
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self._member_repo = repo.MemberRepository()
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self._pool_repo = repo.PoolRepository()
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self._l7policy_repo = repo.L7PolicyRepository()
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self._l7rule_repo = repo.L7RuleRepository()
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self._flavor_repo = repo.FlavorRepository()
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self._az_repo = repo.AvailabilityZoneRepository()
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super(ControllerWorker, self).__init__()
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@tenacity.retry(
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retry=(
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tenacity.retry_if_result(_is_provisioning_status_pending_update) |
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tenacity.retry_if_exception_type()),
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wait=tenacity.wait_incrementing(
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CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
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CONF.haproxy_amphora.api_db_commit_retry_backoff,
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CONF.haproxy_amphora.api_db_commit_retry_max),
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stop=tenacity.stop_after_attempt(
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CONF.haproxy_amphora.api_db_commit_retry_attempts))
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def _get_db_obj_until_pending_update(self, repo, id):
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return repo.get(db_apis.get_session(), id=id)
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def create_amphora(self, availability_zone=None):
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"""Creates an Amphora.
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This is used to create spare amphora.
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:returns: amphora_id
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"""
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try:
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store = {constants.BUILD_TYPE_PRIORITY:
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constants.LB_CREATE_SPARES_POOL_PRIORITY,
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constants.FLAVOR: None,
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constants.SERVER_GROUP_ID: None,
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constants.AVAILABILITY_ZONE: None}
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if availability_zone:
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store[constants.AVAILABILITY_ZONE] = (
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self._az_repo.get_availability_zone_metadata_dict(
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db_apis.get_session(), availability_zone))
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create_amp_tf = self._taskflow_load(
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self._amphora_flows.get_create_amphora_flow(),
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store=store)
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with tf_logging.DynamicLoggingListener(create_amp_tf, log=LOG):
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create_amp_tf.run()
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return create_amp_tf.storage.fetch('amphora')
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except Exception as e:
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LOG.error('Failed to create an amphora due to: {}'.format(str(e)))
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@tenacity.retry(
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retry=tenacity.retry_if_exception_type(db_exceptions.NoResultFound),
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wait=tenacity.wait_incrementing(
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CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
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CONF.haproxy_amphora.api_db_commit_retry_backoff,
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CONF.haproxy_amphora.api_db_commit_retry_max),
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stop=tenacity.stop_after_attempt(
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CONF.haproxy_amphora.api_db_commit_retry_attempts))
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def create_health_monitor(self, health_monitor_id):
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"""Creates a health monitor.
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:param pool_id: ID of the pool to create a health monitor on
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:returns: None
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:raises NoResultFound: Unable to find the object
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"""
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health_mon = self._health_mon_repo.get(db_apis.get_session(),
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id=health_monitor_id)
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if not health_mon:
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LOG.warning('Failed to fetch %s %s from DB. Retrying for up to '
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'60 seconds.', 'health_monitor', health_monitor_id)
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raise db_exceptions.NoResultFound
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pool = health_mon.pool
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listeners = pool.listeners
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pool.health_monitor = health_mon
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load_balancer = pool.load_balancer
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create_hm_tf = self._taskflow_load(
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self._health_monitor_flows.get_create_health_monitor_flow(),
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store={constants.HEALTH_MON: health_mon,
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constants.POOL: pool,
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constants.LISTENERS: listeners,
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constants.LOADBALANCER: load_balancer})
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with tf_logging.DynamicLoggingListener(create_hm_tf,
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log=LOG):
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create_hm_tf.run()
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def delete_health_monitor(self, health_monitor_id):
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"""Deletes a health monitor.
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:param pool_id: ID of the pool to delete its health monitor
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:returns: None
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:raises HMNotFound: The referenced health monitor was not found
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"""
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health_mon = self._health_mon_repo.get(db_apis.get_session(),
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id=health_monitor_id)
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pool = health_mon.pool
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listeners = pool.listeners
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load_balancer = pool.load_balancer
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delete_hm_tf = self._taskflow_load(
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self._health_monitor_flows.get_delete_health_monitor_flow(),
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store={constants.HEALTH_MON: health_mon,
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constants.POOL: pool,
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constants.LISTENERS: listeners,
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constants.LOADBALANCER: load_balancer})
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with tf_logging.DynamicLoggingListener(delete_hm_tf,
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log=LOG):
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delete_hm_tf.run()
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def update_health_monitor(self, health_monitor_id, health_monitor_updates):
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"""Updates a health monitor.
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:param pool_id: ID of the pool to have it's health monitor updated
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:param health_monitor_updates: Dict containing updated health monitor
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:returns: None
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:raises HMNotFound: The referenced health monitor was not found
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"""
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health_mon = None
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try:
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health_mon = self._get_db_obj_until_pending_update(
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self._health_mon_repo, health_monitor_id)
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except tenacity.RetryError as e:
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LOG.warning('Health monitor did not go into %s in 60 seconds. '
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'This either due to an in-progress Octavia upgrade '
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'or an overloaded and failing database. Assuming '
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'an upgrade is in progress and continuing.',
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constants.PENDING_UPDATE)
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health_mon = e.last_attempt.result()
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pool = health_mon.pool
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listeners = pool.listeners
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pool.health_monitor = health_mon
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load_balancer = pool.load_balancer
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update_hm_tf = self._taskflow_load(
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self._health_monitor_flows.get_update_health_monitor_flow(),
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store={constants.HEALTH_MON: health_mon,
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constants.POOL: pool,
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constants.LISTENERS: listeners,
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constants.LOADBALANCER: load_balancer,
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constants.UPDATE_DICT: health_monitor_updates})
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with tf_logging.DynamicLoggingListener(update_hm_tf,
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log=LOG):
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update_hm_tf.run()
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@tenacity.retry(
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retry=tenacity.retry_if_exception_type(db_exceptions.NoResultFound),
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wait=tenacity.wait_incrementing(
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CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
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CONF.haproxy_amphora.api_db_commit_retry_backoff,
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CONF.haproxy_amphora.api_db_commit_retry_max),
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stop=tenacity.stop_after_attempt(
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CONF.haproxy_amphora.api_db_commit_retry_attempts))
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def create_listener(self, listener_id):
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"""Creates a listener.
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:param listener_id: ID of the listener to create
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:returns: None
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:raises NoResultFound: Unable to find the object
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"""
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listener = self._listener_repo.get(db_apis.get_session(),
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id=listener_id)
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if not listener:
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LOG.warning('Failed to fetch %s %s from DB. Retrying for up to '
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'60 seconds.', 'listener', listener_id)
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raise db_exceptions.NoResultFound
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load_balancer = listener.load_balancer
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listeners = load_balancer.listeners
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create_listener_tf = self._taskflow_load(self._listener_flows.
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get_create_listener_flow(),
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store={constants.LOADBALANCER:
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load_balancer,
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constants.LISTENERS:
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listeners})
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with tf_logging.DynamicLoggingListener(create_listener_tf,
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log=LOG):
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create_listener_tf.run()
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def delete_listener(self, listener_id):
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"""Deletes a listener.
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:param listener_id: ID of the listener to delete
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:returns: None
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:raises ListenerNotFound: The referenced listener was not found
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"""
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listener = self._listener_repo.get(db_apis.get_session(),
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id=listener_id)
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load_balancer = listener.load_balancer
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delete_listener_tf = self._taskflow_load(
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self._listener_flows.get_delete_listener_flow(),
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store={constants.LOADBALANCER: load_balancer,
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constants.LISTENER: listener})
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with tf_logging.DynamicLoggingListener(delete_listener_tf,
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log=LOG):
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delete_listener_tf.run()
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def update_listener(self, listener_id, listener_updates):
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"""Updates a listener.
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:param listener_id: ID of the listener to update
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:param listener_updates: Dict containing updated listener attributes
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:returns: None
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:raises ListenerNotFound: The referenced listener was not found
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"""
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listener = None
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try:
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listener = self._get_db_obj_until_pending_update(
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self._listener_repo, listener_id)
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except tenacity.RetryError as e:
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LOG.warning('Listener did not go into %s in 60 seconds. '
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'This either due to an in-progress Octavia upgrade '
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'or an overloaded and failing database. Assuming '
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'an upgrade is in progress and continuing.',
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constants.PENDING_UPDATE)
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listener = e.last_attempt.result()
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load_balancer = listener.load_balancer
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update_listener_tf = self._taskflow_load(self._listener_flows.
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get_update_listener_flow(),
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store={constants.LISTENER:
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listener,
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constants.LOADBALANCER:
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load_balancer,
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constants.UPDATE_DICT:
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listener_updates,
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constants.LISTENERS:
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[listener]})
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with tf_logging.DynamicLoggingListener(update_listener_tf, log=LOG):
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update_listener_tf.run()
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@tenacity.retry(
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retry=tenacity.retry_if_exception_type(db_exceptions.NoResultFound),
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wait=tenacity.wait_incrementing(
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CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
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CONF.haproxy_amphora.api_db_commit_retry_backoff,
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CONF.haproxy_amphora.api_db_commit_retry_max),
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stop=tenacity.stop_after_attempt(
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CONF.haproxy_amphora.api_db_commit_retry_attempts))
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def create_load_balancer(self, load_balancer_id, flavor=None,
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availability_zone=None):
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"""Creates a load balancer by allocating Amphorae.
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First tries to allocate an existing Amphora in READY state.
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If none are available it will attempt to build one specifically
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for this load balancer.
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:param load_balancer_id: ID of the load balancer to create
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:returns: None
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:raises NoResultFound: Unable to find the object
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"""
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lb = self._lb_repo.get(db_apis.get_session(), id=load_balancer_id)
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if not lb:
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LOG.warning('Failed to fetch %s %s from DB. Retrying for up to '
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'60 seconds.', 'load_balancer', load_balancer_id)
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raise db_exceptions.NoResultFound
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# TODO(johnsom) convert this to octavia_lib constant flavor
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# once octavia is transitioned to use octavia_lib
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store = {constants.LOADBALANCER_ID: load_balancer_id,
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constants.BUILD_TYPE_PRIORITY:
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constants.LB_CREATE_NORMAL_PRIORITY,
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constants.FLAVOR: flavor,
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constants.AVAILABILITY_ZONE: availability_zone}
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if not CONF.nova.enable_anti_affinity:
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store[constants.SERVER_GROUP_ID] = None
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topology = lb.topology
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store[constants.UPDATE_DICT] = {
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constants.TOPOLOGY: topology
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}
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create_lb_flow = self._lb_flows.get_create_load_balancer_flow(
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topology=topology, listeners=lb.listeners)
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create_lb_tf = self._taskflow_load(create_lb_flow, store=store)
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with tf_logging.DynamicLoggingListener(create_lb_tf, log=LOG):
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create_lb_tf.run()
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def delete_load_balancer(self, load_balancer_id, cascade=False):
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"""Deletes a load balancer by de-allocating Amphorae.
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:param load_balancer_id: ID of the load balancer to delete
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:returns: None
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:raises LBNotFound: The referenced load balancer was not found
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"""
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lb = self._lb_repo.get(db_apis.get_session(),
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id=load_balancer_id)
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if cascade:
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(flow,
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store) = self._lb_flows.get_cascade_delete_load_balancer_flow(lb)
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else:
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(flow, store) = self._lb_flows.get_delete_load_balancer_flow(lb)
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store.update({constants.LOADBALANCER: lb,
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constants.SERVER_GROUP_ID: lb.server_group_id})
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delete_lb_tf = self._taskflow_load(flow, store=store)
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with tf_logging.DynamicLoggingListener(delete_lb_tf,
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log=LOG):
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delete_lb_tf.run()
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def update_load_balancer(self, load_balancer_id, load_balancer_updates):
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"""Updates a load balancer.
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:param load_balancer_id: ID of the load balancer to update
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:param load_balancer_updates: Dict containing updated load balancer
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:returns: None
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:raises LBNotFound: The referenced load balancer was not found
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"""
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lb = None
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try:
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lb = self._get_db_obj_until_pending_update(
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self._lb_repo, load_balancer_id)
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except tenacity.RetryError as e:
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LOG.warning('Load balancer did not go into %s in 60 seconds. '
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'This either due to an in-progress Octavia upgrade '
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'or an overloaded and failing database. Assuming '
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'an upgrade is in progress and continuing.',
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constants.PENDING_UPDATE)
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lb = e.last_attempt.result()
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listeners, _ = self._listener_repo.get_all(
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db_apis.get_session(),
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load_balancer_id=load_balancer_id)
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update_lb_tf = self._taskflow_load(
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self._lb_flows.get_update_load_balancer_flow(),
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store={constants.LOADBALANCER: lb,
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constants.LISTENERS: listeners,
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constants.UPDATE_DICT: load_balancer_updates})
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with tf_logging.DynamicLoggingListener(update_lb_tf,
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log=LOG):
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update_lb_tf.run()
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@tenacity.retry(
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retry=tenacity.retry_if_exception_type(db_exceptions.NoResultFound),
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wait=tenacity.wait_incrementing(
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CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
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CONF.haproxy_amphora.api_db_commit_retry_backoff,
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CONF.haproxy_amphora.api_db_commit_retry_max),
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stop=tenacity.stop_after_attempt(
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CONF.haproxy_amphora.api_db_commit_retry_attempts))
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def create_member(self, member_id):
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"""Creates a pool member.
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:param member_id: ID of the member to create
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:returns: None
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:raises NoSuitablePool: Unable to find the node pool
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"""
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member = self._member_repo.get(db_apis.get_session(),
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id=member_id)
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if not member:
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LOG.warning('Failed to fetch %s %s from DB. Retrying for up to '
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'60 seconds.', 'member', member_id)
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raise db_exceptions.NoResultFound
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pool = member.pool
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listeners = pool.listeners
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load_balancer = pool.load_balancer
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store = {
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constants.MEMBER: member,
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constants.LISTENERS: listeners,
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constants.LOADBALANCER: load_balancer,
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constants.POOL: pool}
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if load_balancer.availability_zone:
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store[constants.AVAILABILITY_ZONE] = (
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self._az_repo.get_availability_zone_metadata_dict(
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db_apis.get_session(), load_balancer.availability_zone))
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else:
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store[constants.AVAILABILITY_ZONE] = {}
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create_member_tf = self._taskflow_load(
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self._member_flows.get_create_member_flow(),
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store=store)
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with tf_logging.DynamicLoggingListener(create_member_tf,
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log=LOG):
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create_member_tf.run()
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def delete_member(self, member_id):
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"""Deletes a pool member.
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|
|
:param member_id: ID of the member to delete
|
|
:returns: None
|
|
:raises MemberNotFound: The referenced member was not found
|
|
"""
|
|
member = self._member_repo.get(db_apis.get_session(),
|
|
id=member_id)
|
|
pool = member.pool
|
|
listeners = pool.listeners
|
|
load_balancer = pool.load_balancer
|
|
|
|
store = {
|
|
constants.MEMBER: member,
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer,
|
|
constants.POOL: pool}
|
|
if load_balancer.availability_zone:
|
|
store[constants.AVAILABILITY_ZONE] = (
|
|
self._az_repo.get_availability_zone_metadata_dict(
|
|
db_apis.get_session(), load_balancer.availability_zone))
|
|
else:
|
|
store[constants.AVAILABILITY_ZONE] = {}
|
|
|
|
delete_member_tf = self._taskflow_load(
|
|
self._member_flows.get_delete_member_flow(),
|
|
store=store
|
|
)
|
|
with tf_logging.DynamicLoggingListener(delete_member_tf,
|
|
log=LOG):
|
|
delete_member_tf.run()
|
|
|
|
@tenacity.retry(
|
|
retry=tenacity.retry_if_exception_type(db_exceptions.NoResultFound),
|
|
wait=tenacity.wait_incrementing(
|
|
CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
|
|
CONF.haproxy_amphora.api_db_commit_retry_backoff,
|
|
CONF.haproxy_amphora.api_db_commit_retry_max),
|
|
stop=tenacity.stop_after_attempt(
|
|
CONF.haproxy_amphora.api_db_commit_retry_attempts))
|
|
def batch_update_members(self, old_member_ids, new_member_ids,
|
|
updated_members):
|
|
new_members = [self._member_repo.get(db_apis.get_session(), id=mid)
|
|
for mid in new_member_ids]
|
|
# The API may not have commited all of the new member records yet.
|
|
# Make sure we retry looking them up.
|
|
if None in new_members or len(new_members) != len(new_member_ids):
|
|
LOG.warning('Failed to fetch one of the new members from DB. '
|
|
'Retrying for up to 60 seconds.')
|
|
raise db_exceptions.NoResultFound
|
|
old_members = [self._member_repo.get(db_apis.get_session(), id=mid)
|
|
for mid in old_member_ids]
|
|
updated_members = [
|
|
(self._member_repo.get(db_apis.get_session(), id=m.get('id')), m)
|
|
for m in updated_members]
|
|
if old_members:
|
|
pool = old_members[0].pool
|
|
elif new_members:
|
|
pool = new_members[0].pool
|
|
else:
|
|
pool = updated_members[0][0].pool
|
|
listeners = pool.listeners
|
|
load_balancer = pool.load_balancer
|
|
|
|
store = {
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer,
|
|
constants.POOL: pool}
|
|
if load_balancer.availability_zone:
|
|
store[constants.AVAILABILITY_ZONE] = (
|
|
self._az_repo.get_availability_zone_metadata_dict(
|
|
db_apis.get_session(), load_balancer.availability_zone))
|
|
else:
|
|
store[constants.AVAILABILITY_ZONE] = {}
|
|
|
|
batch_update_members_tf = self._taskflow_load(
|
|
self._member_flows.get_batch_update_members_flow(
|
|
old_members, new_members, updated_members),
|
|
store=store)
|
|
with tf_logging.DynamicLoggingListener(batch_update_members_tf,
|
|
log=LOG):
|
|
batch_update_members_tf.run()
|
|
|
|
def update_member(self, member_id, member_updates):
|
|
"""Updates a pool member.
|
|
|
|
:param member_id: ID of the member to update
|
|
:param member_updates: Dict containing updated member attributes
|
|
:returns: None
|
|
:raises MemberNotFound: The referenced member was not found
|
|
"""
|
|
try:
|
|
member = self._get_db_obj_until_pending_update(
|
|
self._member_repo, member_id)
|
|
except tenacity.RetryError as e:
|
|
LOG.warning('Member did not go into %s in 60 seconds. '
|
|
'This either due to an in-progress Octavia upgrade '
|
|
'or an overloaded and failing database. Assuming '
|
|
'an upgrade is in progress and continuing.',
|
|
constants.PENDING_UPDATE)
|
|
member = e.last_attempt.result()
|
|
|
|
pool = member.pool
|
|
listeners = pool.listeners
|
|
load_balancer = pool.load_balancer
|
|
|
|
store = {
|
|
constants.MEMBER: member,
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer,
|
|
constants.POOL: pool,
|
|
constants.UPDATE_DICT: member_updates}
|
|
if load_balancer.availability_zone:
|
|
store[constants.AVAILABILITY_ZONE] = (
|
|
self._az_repo.get_availability_zone_metadata_dict(
|
|
db_apis.get_session(), load_balancer.availability_zone))
|
|
else:
|
|
store[constants.AVAILABILITY_ZONE] = {}
|
|
|
|
update_member_tf = self._taskflow_load(
|
|
self._member_flows.get_update_member_flow(),
|
|
store=store)
|
|
with tf_logging.DynamicLoggingListener(update_member_tf,
|
|
log=LOG):
|
|
update_member_tf.run()
|
|
|
|
@tenacity.retry(
|
|
retry=tenacity.retry_if_exception_type(db_exceptions.NoResultFound),
|
|
wait=tenacity.wait_incrementing(
|
|
CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
|
|
CONF.haproxy_amphora.api_db_commit_retry_backoff,
|
|
CONF.haproxy_amphora.api_db_commit_retry_max),
|
|
stop=tenacity.stop_after_attempt(
|
|
CONF.haproxy_amphora.api_db_commit_retry_attempts))
|
|
def create_pool(self, pool_id):
|
|
"""Creates a node pool.
|
|
|
|
:param pool_id: ID of the pool to create
|
|
:returns: None
|
|
:raises NoResultFound: Unable to find the object
|
|
"""
|
|
pool = self._pool_repo.get(db_apis.get_session(),
|
|
id=pool_id)
|
|
if not pool:
|
|
LOG.warning('Failed to fetch %s %s from DB. Retrying for up to '
|
|
'60 seconds.', 'pool', pool_id)
|
|
raise db_exceptions.NoResultFound
|
|
|
|
listeners = pool.listeners
|
|
load_balancer = pool.load_balancer
|
|
|
|
create_pool_tf = self._taskflow_load(self._pool_flows.
|
|
get_create_pool_flow(),
|
|
store={constants.POOL: pool,
|
|
constants.LISTENERS:
|
|
listeners,
|
|
constants.LOADBALANCER:
|
|
load_balancer})
|
|
with tf_logging.DynamicLoggingListener(create_pool_tf,
|
|
log=LOG):
|
|
create_pool_tf.run()
|
|
|
|
def delete_pool(self, pool_id):
|
|
"""Deletes a node pool.
|
|
|
|
:param pool_id: ID of the pool to delete
|
|
:returns: None
|
|
:raises PoolNotFound: The referenced pool was not found
|
|
"""
|
|
pool = self._pool_repo.get(db_apis.get_session(),
|
|
id=pool_id)
|
|
|
|
load_balancer = pool.load_balancer
|
|
listeners = pool.listeners
|
|
|
|
delete_pool_tf = self._taskflow_load(
|
|
self._pool_flows.get_delete_pool_flow(),
|
|
store={constants.POOL: pool, constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer})
|
|
with tf_logging.DynamicLoggingListener(delete_pool_tf,
|
|
log=LOG):
|
|
delete_pool_tf.run()
|
|
|
|
def update_pool(self, pool_id, pool_updates):
|
|
"""Updates a node pool.
|
|
|
|
:param pool_id: ID of the pool to update
|
|
:param pool_updates: Dict containing updated pool attributes
|
|
:returns: None
|
|
:raises PoolNotFound: The referenced pool was not found
|
|
"""
|
|
pool = None
|
|
try:
|
|
pool = self._get_db_obj_until_pending_update(
|
|
self._pool_repo, pool_id)
|
|
except tenacity.RetryError as e:
|
|
LOG.warning('Pool did not go into %s in 60 seconds. '
|
|
'This either due to an in-progress Octavia upgrade '
|
|
'or an overloaded and failing database. Assuming '
|
|
'an upgrade is in progress and continuing.',
|
|
constants.PENDING_UPDATE)
|
|
pool = e.last_attempt.result()
|
|
|
|
listeners = pool.listeners
|
|
load_balancer = pool.load_balancer
|
|
|
|
update_pool_tf = self._taskflow_load(self._pool_flows.
|
|
get_update_pool_flow(),
|
|
store={constants.POOL: pool,
|
|
constants.LISTENERS:
|
|
listeners,
|
|
constants.LOADBALANCER:
|
|
load_balancer,
|
|
constants.UPDATE_DICT:
|
|
pool_updates})
|
|
with tf_logging.DynamicLoggingListener(update_pool_tf,
|
|
log=LOG):
|
|
update_pool_tf.run()
|
|
|
|
@tenacity.retry(
|
|
retry=tenacity.retry_if_exception_type(db_exceptions.NoResultFound),
|
|
wait=tenacity.wait_incrementing(
|
|
CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
|
|
CONF.haproxy_amphora.api_db_commit_retry_backoff,
|
|
CONF.haproxy_amphora.api_db_commit_retry_max),
|
|
stop=tenacity.stop_after_attempt(
|
|
CONF.haproxy_amphora.api_db_commit_retry_attempts))
|
|
def create_l7policy(self, l7policy_id):
|
|
"""Creates an L7 Policy.
|
|
|
|
:param l7policy_id: ID of the l7policy to create
|
|
:returns: None
|
|
:raises NoResultFound: Unable to find the object
|
|
"""
|
|
l7policy = self._l7policy_repo.get(db_apis.get_session(),
|
|
id=l7policy_id)
|
|
if not l7policy:
|
|
LOG.warning('Failed to fetch %s %s from DB. Retrying for up to '
|
|
'60 seconds.', 'l7policy', l7policy_id)
|
|
raise db_exceptions.NoResultFound
|
|
|
|
listeners = [l7policy.listener]
|
|
load_balancer = l7policy.listener.load_balancer
|
|
|
|
create_l7policy_tf = self._taskflow_load(
|
|
self._l7policy_flows.get_create_l7policy_flow(),
|
|
store={constants.L7POLICY: l7policy,
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer})
|
|
with tf_logging.DynamicLoggingListener(create_l7policy_tf,
|
|
log=LOG):
|
|
create_l7policy_tf.run()
|
|
|
|
def delete_l7policy(self, l7policy_id):
|
|
"""Deletes an L7 policy.
|
|
|
|
:param l7policy_id: ID of the l7policy to delete
|
|
:returns: None
|
|
:raises L7PolicyNotFound: The referenced l7policy was not found
|
|
"""
|
|
l7policy = self._l7policy_repo.get(db_apis.get_session(),
|
|
id=l7policy_id)
|
|
|
|
load_balancer = l7policy.listener.load_balancer
|
|
listeners = [l7policy.listener]
|
|
|
|
delete_l7policy_tf = self._taskflow_load(
|
|
self._l7policy_flows.get_delete_l7policy_flow(),
|
|
store={constants.L7POLICY: l7policy,
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer})
|
|
with tf_logging.DynamicLoggingListener(delete_l7policy_tf,
|
|
log=LOG):
|
|
delete_l7policy_tf.run()
|
|
|
|
def update_l7policy(self, l7policy_id, l7policy_updates):
|
|
"""Updates an L7 policy.
|
|
|
|
:param l7policy_id: ID of the l7policy to update
|
|
:param l7policy_updates: Dict containing updated l7policy attributes
|
|
:returns: None
|
|
:raises L7PolicyNotFound: The referenced l7policy was not found
|
|
"""
|
|
l7policy = None
|
|
try:
|
|
l7policy = self._get_db_obj_until_pending_update(
|
|
self._l7policy_repo, l7policy_id)
|
|
except tenacity.RetryError as e:
|
|
LOG.warning('L7 policy did not go into %s in 60 seconds. '
|
|
'This either due to an in-progress Octavia upgrade '
|
|
'or an overloaded and failing database. Assuming '
|
|
'an upgrade is in progress and continuing.',
|
|
constants.PENDING_UPDATE)
|
|
l7policy = e.last_attempt.result()
|
|
|
|
listeners = [l7policy.listener]
|
|
load_balancer = l7policy.listener.load_balancer
|
|
|
|
update_l7policy_tf = self._taskflow_load(
|
|
self._l7policy_flows.get_update_l7policy_flow(),
|
|
store={constants.L7POLICY: l7policy,
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer,
|
|
constants.UPDATE_DICT: l7policy_updates})
|
|
with tf_logging.DynamicLoggingListener(update_l7policy_tf,
|
|
log=LOG):
|
|
update_l7policy_tf.run()
|
|
|
|
@tenacity.retry(
|
|
retry=tenacity.retry_if_exception_type(db_exceptions.NoResultFound),
|
|
wait=tenacity.wait_incrementing(
|
|
CONF.haproxy_amphora.api_db_commit_retry_initial_delay,
|
|
CONF.haproxy_amphora.api_db_commit_retry_backoff,
|
|
CONF.haproxy_amphora.api_db_commit_retry_max),
|
|
stop=tenacity.stop_after_attempt(
|
|
CONF.haproxy_amphora.api_db_commit_retry_attempts))
|
|
def create_l7rule(self, l7rule_id):
|
|
"""Creates an L7 Rule.
|
|
|
|
:param l7rule_id: ID of the l7rule to create
|
|
:returns: None
|
|
:raises NoResultFound: Unable to find the object
|
|
"""
|
|
l7rule = self._l7rule_repo.get(db_apis.get_session(),
|
|
id=l7rule_id)
|
|
if not l7rule:
|
|
LOG.warning('Failed to fetch %s %s from DB. Retrying for up to '
|
|
'60 seconds.', 'l7rule', l7rule_id)
|
|
raise db_exceptions.NoResultFound
|
|
|
|
l7policy = l7rule.l7policy
|
|
listeners = [l7policy.listener]
|
|
load_balancer = l7policy.listener.load_balancer
|
|
|
|
create_l7rule_tf = self._taskflow_load(
|
|
self._l7rule_flows.get_create_l7rule_flow(),
|
|
store={constants.L7RULE: l7rule,
|
|
constants.L7POLICY: l7policy,
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer})
|
|
with tf_logging.DynamicLoggingListener(create_l7rule_tf,
|
|
log=LOG):
|
|
create_l7rule_tf.run()
|
|
|
|
def delete_l7rule(self, l7rule_id):
|
|
"""Deletes an L7 rule.
|
|
|
|
:param l7rule_id: ID of the l7rule to delete
|
|
:returns: None
|
|
:raises L7RuleNotFound: The referenced l7rule was not found
|
|
"""
|
|
l7rule = self._l7rule_repo.get(db_apis.get_session(),
|
|
id=l7rule_id)
|
|
l7policy = l7rule.l7policy
|
|
load_balancer = l7policy.listener.load_balancer
|
|
listeners = [l7policy.listener]
|
|
|
|
delete_l7rule_tf = self._taskflow_load(
|
|
self._l7rule_flows.get_delete_l7rule_flow(),
|
|
store={constants.L7RULE: l7rule,
|
|
constants.L7POLICY: l7policy,
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer})
|
|
with tf_logging.DynamicLoggingListener(delete_l7rule_tf,
|
|
log=LOG):
|
|
delete_l7rule_tf.run()
|
|
|
|
def update_l7rule(self, l7rule_id, l7rule_updates):
|
|
"""Updates an L7 rule.
|
|
|
|
:param l7rule_id: ID of the l7rule to update
|
|
:param l7rule_updates: Dict containing updated l7rule attributes
|
|
:returns: None
|
|
:raises L7RuleNotFound: The referenced l7rule was not found
|
|
"""
|
|
l7rule = None
|
|
try:
|
|
l7rule = self._get_db_obj_until_pending_update(
|
|
self._l7rule_repo, l7rule_id)
|
|
except tenacity.RetryError as e:
|
|
LOG.warning('L7 rule did not go into %s in 60 seconds. '
|
|
'This either due to an in-progress Octavia upgrade '
|
|
'or an overloaded and failing database. Assuming '
|
|
'an upgrade is in progress and continuing.',
|
|
constants.PENDING_UPDATE)
|
|
l7rule = e.last_attempt.result()
|
|
|
|
l7policy = l7rule.l7policy
|
|
listeners = [l7policy.listener]
|
|
load_balancer = l7policy.listener.load_balancer
|
|
|
|
update_l7rule_tf = self._taskflow_load(
|
|
self._l7rule_flows.get_update_l7rule_flow(),
|
|
store={constants.L7RULE: l7rule,
|
|
constants.L7POLICY: l7policy,
|
|
constants.LISTENERS: listeners,
|
|
constants.LOADBALANCER: load_balancer,
|
|
constants.UPDATE_DICT: l7rule_updates})
|
|
with tf_logging.DynamicLoggingListener(update_l7rule_tf,
|
|
log=LOG):
|
|
update_l7rule_tf.run()
|
|
|
|
def failover_amphora(self, amphora_id):
|
|
"""Perform failover operations for an amphora.
|
|
|
|
Note: This expects the load balancer to already be in
|
|
provisioning_status=PENDING_UPDATE state.
|
|
|
|
:param amphora_id: ID for amphora to failover
|
|
:returns: None
|
|
:raises octavia.common.exceptions.NotFound: The referenced amphora was
|
|
not found
|
|
"""
|
|
amphora = None
|
|
try:
|
|
amphora = self._amphora_repo.get(db_apis.get_session(),
|
|
id=amphora_id)
|
|
if amphora is None:
|
|
LOG.error('Amphora failover for amphora %s failed because '
|
|
'there is no record of this amphora in the '
|
|
'database. Check that the [house_keeping] '
|
|
'amphora_expiry_age configuration setting is not '
|
|
'too short. Skipping failover.', amphora_id)
|
|
raise exceptions.NotFound(resource=constants.AMPHORA,
|
|
id=amphora_id)
|
|
|
|
if amphora.status == constants.DELETED:
|
|
LOG.warning('Amphora %s is marked DELETED in the database but '
|
|
'was submitted for failover. Deleting it from the '
|
|
'amphora health table to exclude it from health '
|
|
'checks and skipping the failover.', amphora.id)
|
|
self._amphora_health_repo.delete(db_apis.get_session(),
|
|
amphora_id=amphora.id)
|
|
return
|
|
|
|
loadbalancer = None
|
|
if amphora.load_balancer_id:
|
|
loadbalancer = self._lb_repo.get(db_apis.get_session(),
|
|
id=amphora.load_balancer_id)
|
|
lb_amp_count = None
|
|
if loadbalancer:
|
|
if loadbalancer.topology == constants.TOPOLOGY_ACTIVE_STANDBY:
|
|
lb_amp_count = 2
|
|
elif loadbalancer.topology == constants.TOPOLOGY_SINGLE:
|
|
lb_amp_count = 1
|
|
|
|
amp_failover_flow = self._amphora_flows.get_failover_amphora_flow(
|
|
amphora, lb_amp_count)
|
|
|
|
az_metadata = {}
|
|
flavor = {}
|
|
lb_id = None
|
|
vip = None
|
|
server_group_id = None
|
|
if loadbalancer:
|
|
lb_id = loadbalancer.id
|
|
if loadbalancer.flavor_id:
|
|
flavor = self._flavor_repo.get_flavor_metadata_dict(
|
|
db_apis.get_session(), loadbalancer.flavor_id)
|
|
flavor[constants.LOADBALANCER_TOPOLOGY] = (
|
|
loadbalancer.topology)
|
|
else:
|
|
flavor = {constants.LOADBALANCER_TOPOLOGY:
|
|
loadbalancer.topology}
|
|
if loadbalancer.availability_zone:
|
|
az_metadata = (
|
|
self._az_repo.get_availability_zone_metadata_dict(
|
|
db_apis.get_session(),
|
|
loadbalancer.availability_zone))
|
|
vip = loadbalancer.vip
|
|
server_group_id = loadbalancer.server_group_id
|
|
|
|
stored_params = {constants.AVAILABILITY_ZONE: az_metadata,
|
|
constants.BUILD_TYPE_PRIORITY:
|
|
constants.LB_CREATE_FAILOVER_PRIORITY,
|
|
constants.FLAVOR: flavor,
|
|
constants.LOADBALANCER: loadbalancer,
|
|
constants.SERVER_GROUP_ID: server_group_id,
|
|
constants.LOADBALANCER_ID: lb_id,
|
|
constants.VIP: vip}
|
|
|
|
failover_amphora_tf = self._taskflow_load(amp_failover_flow,
|
|
store=stored_params)
|
|
|
|
with tf_logging.DynamicLoggingListener(failover_amphora_tf,
|
|
log=LOG):
|
|
failover_amphora_tf.run()
|
|
|
|
LOG.info("Successfully completed the failover for an amphora: %s",
|
|
{"id": amphora_id,
|
|
"load_balancer_id": lb_id,
|
|
"lb_network_ip": amphora.lb_network_ip,
|
|
"compute_id": amphora.compute_id,
|
|
"role": amphora.role})
|
|
|
|
except Exception as e:
|
|
with excutils.save_and_reraise_exception(reraise=False):
|
|
LOG.exception("Amphora %s failover exception: %s",
|
|
amphora_id, str(e))
|
|
self._amphora_repo.update(db_apis.get_session(),
|
|
amphora_id, status=constants.ERROR)
|
|
if amphora and amphora.load_balancer_id:
|
|
self._lb_repo.update(
|
|
db_apis.get_session(), amphora.load_balancer_id,
|
|
provisioning_status=constants.ERROR)
|
|
|
|
@staticmethod
|
|
def _get_amphorae_for_failover(load_balancer):
|
|
"""Returns an ordered list of amphora to failover.
|
|
|
|
:param load_balancer: The load balancer being failed over.
|
|
:returns: An ordered list of amphora to failover,
|
|
first amp to failover is last in the list
|
|
:raises octavia.common.exceptions.InvalidTopology: LB has an unknown
|
|
topology.
|
|
"""
|
|
if load_balancer.topology == constants.TOPOLOGY_SINGLE:
|
|
# In SINGLE topology, amp failover order does not matter
|
|
return [a for a in load_balancer.amphorae
|
|
if a.status != constants.DELETED]
|
|
|
|
if load_balancer.topology == constants.TOPOLOGY_ACTIVE_STANDBY:
|
|
# In Active/Standby we should preference the standby amp
|
|
# for failover first in case the Active is still able to pass
|
|
# traffic.
|
|
# Note: The active amp can switch at any time and in less than a
|
|
# second, so this is "best effort".
|
|
amphora_driver = utils.get_amphora_driver()
|
|
timeout_dict = {
|
|
constants.CONN_MAX_RETRIES:
|
|
CONF.haproxy_amphora.failover_connection_max_retries,
|
|
constants.CONN_RETRY_INTERVAL:
|
|
CONF.haproxy_amphora.failover_connection_retry_interval}
|
|
amps = []
|
|
selected_amp = None
|
|
for amp in load_balancer.amphorae:
|
|
if amp.status == constants.DELETED:
|
|
continue
|
|
if selected_amp is None:
|
|
try:
|
|
if amphora_driver.get_interface_from_ip(
|
|
amp, load_balancer.vip.ip_address,
|
|
timeout_dict):
|
|
# This is a potential ACTIVE, add it to the list
|
|
amps.append(amp)
|
|
else:
|
|
# This one doesn't have the VIP IP, so start
|
|
# failovers here.
|
|
selected_amp = amp
|
|
LOG.debug("Selected amphora %s as the initial "
|
|
"failover amphora.", amp.id)
|
|
except Exception:
|
|
# This amphora is broken, so start failovers here.
|
|
selected_amp = amp
|
|
else:
|
|
# We have already found a STANDBY, so add the rest to the
|
|
# list without querying them.
|
|
amps.append(amp)
|
|
# Put the selected amphora at the end of the list so it is
|
|
# first to failover.
|
|
if selected_amp:
|
|
amps.append(selected_amp)
|
|
return amps
|
|
|
|
LOG.error('Unknown load balancer topology found: %s, aborting '
|
|
'failover.', load_balancer.topology)
|
|
raise exceptions.InvalidTopology(topology=load_balancer.topology)
|
|
|
|
def failover_loadbalancer(self, load_balancer_id):
|
|
"""Perform failover operations for a load balancer.
|
|
|
|
Note: This expects the load balancer to already be in
|
|
provisioning_status=PENDING_UPDATE state.
|
|
|
|
:param load_balancer_id: ID for load balancer to failover
|
|
:returns: None
|
|
:raises octavia.commom.exceptions.NotFound: The load balancer was not
|
|
found.
|
|
"""
|
|
try:
|
|
lb = self._lb_repo.get(db_apis.get_session(),
|
|
id=load_balancer_id)
|
|
if lb is None:
|
|
raise exceptions.NotFound(resource=constants.LOADBALANCER,
|
|
id=load_balancer_id)
|
|
|
|
# Get the ordered list of amphorae to failover for this LB.
|
|
amps = self._get_amphorae_for_failover(lb)
|
|
|
|
if lb.topology == constants.TOPOLOGY_SINGLE:
|
|
if len(amps) != 1:
|
|
LOG.warning('%d amphorae found on load balancer %s where '
|
|
'one should exist. Repairing.', len(amps),
|
|
load_balancer_id)
|
|
elif lb.topology == constants.TOPOLOGY_ACTIVE_STANDBY:
|
|
|
|
if len(amps) != 2:
|
|
LOG.warning('%d amphorae found on load balancer %s where '
|
|
'two should exist. Repairing.', len(amps),
|
|
load_balancer_id)
|
|
else:
|
|
LOG.error('Unknown load balancer topology found: %s, aborting '
|
|
'failover!', lb.topology)
|
|
raise exceptions.InvalidTopology(topology=lb.topology)
|
|
|
|
# Build our failover flow.
|
|
lb_failover_flow = self._lb_flows.get_failover_LB_flow(amps, lb)
|
|
|
|
# We must provide a topology in the flavor definition
|
|
# here for the amphora to be created with the correct
|
|
# configuration.
|
|
if lb.flavor_id:
|
|
flavor = self._flavor_repo.get_flavor_metadata_dict(
|
|
db_apis.get_session(), lb.flavor_id)
|
|
flavor[constants.LOADBALANCER_TOPOLOGY] = lb.topology
|
|
else:
|
|
flavor = {constants.LOADBALANCER_TOPOLOGY: lb.topology}
|
|
|
|
stored_params = {constants.LOADBALANCER: lb,
|
|
constants.BUILD_TYPE_PRIORITY:
|
|
constants.LB_CREATE_FAILOVER_PRIORITY,
|
|
constants.SERVER_GROUP_ID: lb.server_group_id,
|
|
constants.LOADBALANCER_ID: lb.id,
|
|
constants.FLAVOR: flavor}
|
|
|
|
if lb.availability_zone:
|
|
stored_params[constants.AVAILABILITY_ZONE] = (
|
|
self._az_repo.get_availability_zone_metadata_dict(
|
|
db_apis.get_session(), lb.availability_zone))
|
|
else:
|
|
stored_params[constants.AVAILABILITY_ZONE] = {}
|
|
|
|
failover_lb_tf = self._taskflow_load(lb_failover_flow,
|
|
store=stored_params)
|
|
|
|
with tf_logging.DynamicLoggingListener(failover_lb_tf, log=LOG):
|
|
failover_lb_tf.run()
|
|
LOG.info('Failover of load balancer %s completed successfully.',
|
|
lb.id)
|
|
|
|
except Exception as e:
|
|
with excutils.save_and_reraise_exception(reraise=False):
|
|
LOG.exception("LB %(lbid)s failover exception: %(exc)s",
|
|
{'lbid': load_balancer_id, 'exc': e})
|
|
self._lb_repo.update(
|
|
db_apis.get_session(), load_balancer_id,
|
|
provisioning_status=constants.ERROR)
|
|
|
|
def amphora_cert_rotation(self, amphora_id):
|
|
"""Perform cert rotation for an amphora.
|
|
|
|
:param amphora_id: ID for amphora to rotate
|
|
:returns: None
|
|
:raises AmphoraNotFound: The referenced amphora was not found
|
|
"""
|
|
|
|
amp = self._amphora_repo.get(db_apis.get_session(),
|
|
id=amphora_id)
|
|
LOG.info("Start amphora cert rotation, amphora's id is: %s", amp.id)
|
|
|
|
certrotation_amphora_tf = self._taskflow_load(
|
|
self._amphora_flows.cert_rotate_amphora_flow(),
|
|
store={constants.AMPHORA: amp,
|
|
constants.AMPHORA_ID: amp.id})
|
|
|
|
with tf_logging.DynamicLoggingListener(certrotation_amphora_tf,
|
|
log=LOG):
|
|
certrotation_amphora_tf.run()
|
|
|
|
def update_amphora_agent_config(self, amphora_id):
|
|
"""Update the amphora agent configuration.
|
|
|
|
Note: This will update the amphora agent configuration file and
|
|
update the running configuration for mutatable configuration
|
|
items.
|
|
|
|
:param amphora_id: ID of the amphora to update.
|
|
:returns: None
|
|
"""
|
|
LOG.info("Start amphora agent configuration update, amphora's id "
|
|
"is: %s", amphora_id)
|
|
amp = self._amphora_repo.get(db_apis.get_session(), id=amphora_id)
|
|
lb = self._amphora_repo.get_lb_for_amphora(db_apis.get_session(),
|
|
amphora_id)
|
|
flavor = {}
|
|
if lb.flavor_id:
|
|
flavor = self._flavor_repo.get_flavor_metadata_dict(
|
|
db_apis.get_session(), lb.flavor_id)
|
|
|
|
update_amphora_tf = self._taskflow_load(
|
|
self._amphora_flows.update_amphora_config_flow(),
|
|
store={constants.AMPHORA: amp,
|
|
constants.FLAVOR: flavor})
|
|
|
|
with tf_logging.DynamicLoggingListener(update_amphora_tf,
|
|
log=LOG):
|
|
update_amphora_tf.run()
|