139 lines
5.0 KiB
Python
139 lines
5.0 KiB
Python
# Copyright 2013 OpenStack Foundation
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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 oslo import messaging
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from trove.backup import models as bkup_models
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from trove.common import cfg
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from trove.common import exception
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from trove.common.instance import ServiceStatus
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from trove.common.rpc import version as rpc_version
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from trove.conductor.models import LastSeen
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from trove.extensions.mysql import models as mysql_models
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from trove.instance import models as t_models
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from trove.openstack.common import log as logging
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from trove.openstack.common import periodic_task
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from trove.common.i18n import _
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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class Manager(periodic_task.PeriodicTasks):
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target = messaging.Target(version=rpc_version.RPC_API_VERSION)
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def __init__(self):
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super(Manager, self).__init__()
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def _message_too_old(self, instance_id, method_name, sent):
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fields = {
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"instance": instance_id,
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"method": method_name,
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"sent": sent,
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}
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LOG.debug("Instance %(instance)s sent %(method)s at %(sent)s "
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% fields)
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if sent is None:
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LOG.error(_("[Instance %s] sent field not present. Cannot "
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"compare.") % instance_id)
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return False
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seen = None
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try:
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seen = LastSeen.load(instance_id=instance_id,
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method_name=method_name)
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except exception.NotFound:
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# This is fine.
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pass
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if seen is None:
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LOG.debug("[Instance %s] Did not find any previous message. "
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"Creating." % instance_id)
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seen = LastSeen.create(instance_id=instance_id,
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method_name=method_name,
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sent=sent)
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seen.save()
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return False
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last_sent = float(seen.sent)
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if last_sent < sent:
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LOG.debug("[Instance %s] Rec'd message is younger than last "
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"seen. Updating." % instance_id)
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seen.sent = sent
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seen.save()
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return False
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else:
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LOG.info(_("[Instance %s] Rec'd message is older than last seen. "
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"Discarding.") % instance_id)
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return True
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def heartbeat(self, context, instance_id, payload, sent=None):
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LOG.debug("Instance ID: %s" % str(instance_id))
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LOG.debug("Payload: %s" % str(payload))
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status = t_models.InstanceServiceStatus.find_by(
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instance_id=instance_id)
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if self._message_too_old(instance_id, 'heartbeat', sent):
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return
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if payload.get('service_status') is not None:
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status.set_status(ServiceStatus.from_description(
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payload['service_status']))
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status.save()
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def update_backup(self, context, instance_id, backup_id,
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sent=None, **backup_fields):
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LOG.debug("Instance ID: %s" % str(instance_id))
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LOG.debug("Backup ID: %s" % str(backup_id))
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backup = bkup_models.DBBackup.find_by(id=backup_id)
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# TODO(datsun180b): use context to verify tenant matches
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if self._message_too_old(instance_id, 'update_backup', sent):
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return
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# Some verification based on IDs
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if backup_id != backup.id:
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fields = {
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'expected': backup_id,
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'found': backup.id,
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'instance': str(instance_id),
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}
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LOG.error(_("[Instance: %(instance)s] Backup IDs mismatch! "
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"Expected %(expected)s, found %(found)s") % fields)
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return
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if instance_id != backup.instance_id:
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fields = {
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'expected': instance_id,
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'found': backup.instance_id,
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'instance': str(instance_id),
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}
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LOG.error(_("[Instance: %(instance)s] Backup instance IDs "
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"mismatch! Expected %(expected)s, found "
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"%(found)s") % fields)
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return
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for k, v in backup_fields.items():
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if hasattr(backup, k):
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fields = {
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'key': k,
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'value': v,
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}
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LOG.debug("Backup %(key)s: %(value)s" % fields)
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setattr(backup, k, v)
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backup.save()
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def report_root(self, context, instance_id, user):
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mysql_models.RootHistory.create(context, instance_id, user)
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