92 lines
4.0 KiB
Python
92 lines
4.0 KiB
Python
# Copyright 2019 Intel, Inc.
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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 cyborg.common import exception
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from cyborg.common.i18n import _
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from cyborg.common import utils
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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class NovaAPI(object):
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def __init__(self):
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self.nova_client = utils.get_sdk_adapter('compute')
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self.nova_client.default_microversion = '2.82'
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def _get_acc_changed_events(self, instance_uuid, arq_bind_statuses):
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return [{'name': 'accelerator-request-bound',
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'server_uuid': instance_uuid,
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'tag': arq_uuid,
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'status': arq_bind_status,
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} for (arq_uuid, arq_bind_status) in arq_bind_statuses]
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def _send_events(self, events):
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"""Send events to Nova external events API.
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:param events: List of events to send to Nova.
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:raises: exception.InvalidAPIResponse, on unexpected error
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"""
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url = "/os-server-external-events"
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body = {"events": events}
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response = self.nova_client.post(url, json=body)
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# NOTE(Sundar): Response status should always be 200/207. See
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# https://review.opendev.org/#/c/698037/
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if response.status_code == 200:
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LOG.info("Sucessfully sent events to Nova, events: %(events)s",
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{"events": events})
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elif response.status_code == 207:
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# NOTE(Sundar): If Nova returns per-event code of 422, that
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# is due to a race condition where Nova has not associated
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# the instance with a host yet. See
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# https://bugs.launchpad.net/nova/+bug/1855752
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events = [ev for ev in response.json()['events']]
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event_codes = {ev['code'] for ev in events}
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if len(event_codes) == 1: # all events have same event code
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if event_codes == {422}:
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LOG.info('Ignoring Nova notification error that the '
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'instance %s is not yet associated with a host.',
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events[0]['server_uuid'])
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else:
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msg = _('Unexpected event code %(code)s '
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'for instance %(inst)s')
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msg = msg % {'code': event_codes[0],
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'inst': events[0]["server_uuid"]}
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raise exception.InvalidAPIResponse(
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service='Nova', api=url[1:], msg=msg)
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else:
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msg = _('All event responses are expected to '
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'have the same event code. Instance: %(inst)s')
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msg = msg % {'inst': events[0]['server_uuid']}
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raise exception.InvalidAPIResponse(
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service='Nova', api=url[1:], msg=msg)
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else:
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# Unexpected return code from Nova
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msg = _('Failed to send events %(ev)s: HTTP %(code)s: %(txt)s')
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msg = msg % {'ev': events,
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'code': response.status_code,
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'txt': response.text}
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raise exception.InvalidAPIResponse(
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service='Nova', api=url[1:], msg=msg)
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def notify_binding(self, instance_uuid, arq_bind_statuses):
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"""Notify Nova that ARQ bindings are resolved for a given instance.
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:param instance_uuid: UUID of the instance whose ARQs are resolved
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:param arq_bind_statuses: List of (arq_uuid, arq_bind_status) tuples
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:returns: None
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"""
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events = self._get_acc_changed_events(instance_uuid, arq_bind_statuses)
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self._send_events(events)
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