118 lines
3.8 KiB
Python
118 lines
3.8 KiB
Python
# 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 keystoneauth1 import exceptions as kaexception
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from oslo_log import log
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from ironic.common import keystone
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from ironic.common import states
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from ironic.conf import CONF
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LOG = log.getLogger(__name__)
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NOVA_API_VERSION = "2.1"
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NOVA_API_MICROVERSION = '2.76'
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_NOVA_ADAPTER = None
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def _get_nova_adapter():
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global _NOVA_ADAPTER
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if not _NOVA_ADAPTER:
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_NOVA_ADAPTER = keystone.get_adapter(
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'nova',
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session=keystone.get_session('nova'),
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auth=keystone.get_auth('nova'),
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version=NOVA_API_VERSION)
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return _NOVA_ADAPTER
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def _get_power_update_event(server_uuid, target_power_state):
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return {'name': 'power-update',
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'server_uuid': server_uuid,
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'tag': target_power_state}
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def _send_event(context, event, api_version=None):
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"""Sends an event to Nova conveying power state change.
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:param context:
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request context,
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instance of ironic.common.context.RequestContext
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:param event:
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A "power-update" event for nova to act upon.
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:param api_version:
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api version of nova
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:returns:
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A boolean which indicates if the event was sent and received
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successfully.
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"""
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try:
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nova = _get_nova_adapter()
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response = nova.post(
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'/os-server-external-events', json={'events': [event]},
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microversion=api_version, global_request_id=context.global_id,
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raise_exc=False)
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except kaexception.ClientException as ex:
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LOG.warning('Could not connect to Nova to send a power notification, '
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'please check configuration. %s', ex)
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return False
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try:
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if response.status_code >= 400:
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LOG.warning('Failed to notify nova on event: %s. %s.',
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event, response.text)
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return False
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resp_event = response.json()['events'][0]
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code = resp_event['code']
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except Exception as e:
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LOG.error('Invalid response %s returned from nova for power-update '
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'event %s. %s.', response, event, e)
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return False
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if code >= 400:
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LOG.warning('Nova event: %s returned with failed status.', resp_event)
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return False
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LOG.debug('Nova event response: %s.', resp_event)
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return True
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def power_update(context, server_uuid, target_power_state):
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"""Creates and sends power state change for the provided server_uuid.
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:param context:
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request context,
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instance of ironic.common.context.RequestContext
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:param server_uuid:
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The uuid of the node whose power state changed.
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:param target_power_state:
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Targeted power state change i.e "POWER_ON" or "POWER_OFF"
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:returns:
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A boolean which indicates if the power update was executed
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successfully (mainly for testing purposes).
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"""
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if not CONF.nova.send_power_notifications:
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return False
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if target_power_state == states.POWER_ON:
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target_power_state = "POWER_ON"
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elif target_power_state == states.POWER_OFF:
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target_power_state = "POWER_OFF"
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else:
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LOG.error('Invalid Power State %s.', target_power_state)
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return False
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event = _get_power_update_event(server_uuid, target_power_state)
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result = _send_event(context, event, api_version=NOVA_API_MICROVERSION)
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return result
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