201 lines
7.2 KiB
Python
201 lines
7.2 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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import logging
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from oslo.config import cfg
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from stevedore import driver as stevedore_driver
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from taskflow import task
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from taskflow.types import failure
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from octavia.common import constants
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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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from octavia.i18n import _LW
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CONF = cfg.CONF
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CONF.import_group('controller_worker', 'octavia.common.config')
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LOG = logging.getLogger(__name__)
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class BaseAmphoraTask(task.Task):
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"""Base task to load drivers common to the tasks."""
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def __init__(self, **kwargs):
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super(BaseAmphoraTask, self).__init__(**kwargs)
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self.amphora_driver = stevedore_driver.DriverManager(
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namespace='octavia.amphora.drivers',
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name=CONF.controller_worker.amphora_driver,
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invoke_on_load=True
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).driver
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self.amphora_repo = repo.AmphoraRepository()
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self.listener_repo = repo.ListenerRepository()
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self.loadbalancer_repo = repo.LoadBalancerRepository()
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class ListenerUpdate(BaseAmphoraTask):
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"""Task to update an amphora with new configuration for the listener."""
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def execute(self, listener, vip):
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"""Execute listener update routines for an amphora."""
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self.amphora_driver.update(listener, vip)
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LOG.debug("Updated amphora with new configuration for listener")
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def revert(self, listener, *args, **kwargs):
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"""Handle a failed listener update."""
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LOG.warn(_LW("Reverting listener update."))
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self.listener_repo.update(db_apis.get_session(), id=listener.id,
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provisioning_status=constants.ERROR)
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return None
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class ListenerStop(BaseAmphoraTask):
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"""Task to stop the listener on the vip."""
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def execute(self, listener, vip):
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"""Execute listener stop routines for an amphora."""
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self.amphora_driver.stop(listener, vip)
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LOG.debug("Stopped the listener on the vip")
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def revert(self, listener, *args, **kwargs):
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"""Handle a failed listener stop."""
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LOG.warn(_LW("Reverting listener stop."))
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self.listener_repo.update(db_apis.get_session(), id=listener.id,
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provisioning_status=constants.ERROR)
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return None
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class ListenerStart(BaseAmphoraTask):
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"""Task to start the listener on the vip."""
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def execute(self, listener, vip):
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"""Execute listener start routines for an amphora."""
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self.amphora_driver.start(listener, vip)
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LOG.debug("Started the listener on the vip")
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def revert(self, listener, *args, **kwargs):
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"""Handle a failed listener start."""
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LOG.warn(_LW("Reverting listener start."))
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self.listener_repo.update(db_apis.get_session(), id=listener.id,
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provisioning_status=constants.ERROR)
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return None
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class ListenerDelete(BaseAmphoraTask):
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"""Task to delete the listener on the vip."""
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def execute(self, listener, vip):
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"""Execute listener delete routines for an amphora."""
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self.amphora_driver.delete(listener, vip)
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LOG.debug("Deleted the listener on the vip")
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def revert(self, listener, *args, **kwargs):
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"""Handle a failed listener delete."""
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LOG.warn(_LW("Reverting listener delete."))
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self.listener_repo.update(db_apis.get_session(), id=listener.id,
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provisioning_status=constants.ERROR)
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class AmphoraGetInfo(BaseAmphoraTask):
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"""Task to get information on an amphora."""
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def execute(self, amphora):
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"""Execute get_info routine for an amphora."""
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self.amphora_driver.get_info(amphora)
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class AmphoraGetDiagnostics(BaseAmphoraTask):
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"""Task to get diagnostics on the amphora and the loadbalancers."""
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def execute(self, amphora):
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"""Execute get_diagnostic routine for an amphora."""
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self.amphora_driver.get_diagnostics(amphora)
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class AmphoraFinalize(BaseAmphoraTask):
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"""Task to finalize the amphora before any listeners are configured."""
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def execute(self, amphora):
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"""Execute finalize_amphora routine."""
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self.amphora_driver.finalize_amphora(amphora)
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LOG.debug("Finalized the amphora.")
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def revert(self, result, amphora, *args, **kwargs):
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"""Handle a failed amphora finalize."""
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if isinstance(result, failure.Failure):
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return
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LOG.warn(_LW("Reverting amphora finalize."))
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self.amphora_repo.update(db_apis.get_session(), id=amphora.id,
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status=constants.ERROR)
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class AmphoraPostNetworkPlug(BaseAmphoraTask):
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"""Task to notify the amphora post network plug."""
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def execute(self, amphora):
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"""Execute post_network_plug routine."""
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self.amphora_driver.post_network_plug(amphora)
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LOG.debug("Posted network plug for the compute instance")
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def revert(self, result, amphora, *args, **kwargs):
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"""Handle a failed post network plug."""
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if isinstance(result, failure.Failure):
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return
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LOG.warn(_LW("Reverting post network plug."))
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self.amphora_repo.update(db_apis.get_session(), id=amphora.id,
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status=constants.ERROR)
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class AmphoraePostNetworkPlug(BaseAmphoraTask):
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"""Task to notify the amphorae post network plug."""
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def execute(self, loadbalancer):
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"""Execute post_network_plug routine."""
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for amphora in loadbalancer.amphorae:
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self.amphora_driver.post_network_plug(amphora)
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LOG.debug("Posted network plug for the compute instance")
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def revert(self, result, loadbalancer, *args, **kwargs):
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"""Handle a failed post network plug."""
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if isinstance(result, failure.Failure):
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return
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LOG.warn(_LW("Reverting post network plug."))
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for amphora in loadbalancer.amphorae:
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self.amphora_repo.update(db_apis.get_session(), id=amphora.id,
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status=constants.ERROR)
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class AmphoraPostVIPPlug(BaseAmphoraTask):
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"""Task to notify the amphora post VIP plug."""
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def execute(self, loadbalancer):
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"""Execute post_vip_routine."""
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self.amphora_driver.post_vip_plug(loadbalancer)
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LOG.debug("Notfied amphora of vip plug")
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def revert(self, result, loadbalancer, *args, **kwargs):
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"""Handle a failed amphora vip plug notification."""
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if isinstance(result, failure.Failure):
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return
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LOG.warn(_LW("Reverting post vip plug."))
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self.loadbalancer_repo.update(db_apis.get_session(),
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id=loadbalancer.id,
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status=constants.ERROR)
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