d7a44739a6
This patch adds feature to cancel action plan in watcher. A General flow from watcher-api to watcher-applier is implemented. action plan cancel can cancel any [ongoing, pending, recommended] action plan, it will update the action states also to "cancelled". For ongoing actions in action plan, actions needs to be aborted. Seperate patches will be added to support abort operation in each action. Notification part is addressed by a seperate blueprint. https://blueprints.launchpad.net/watcher/+spec/notifications-actionplan-cancel Change-Id: I895a5eaca5239d5657702c8d1875b9ece21682dc Partially-Implements: blueprint cancel-action-plan
86 lines
3.2 KiB
Python
86 lines
3.2 KiB
Python
# -*- encoding: utf-8 -*-
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# Copyright (c) 2015 b<>com
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#
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# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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from oslo_log import log
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from watcher.applier.action_plan import base
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from watcher.applier import default
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from watcher.common import exception
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from watcher import notifications
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from watcher import objects
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from watcher.objects import fields
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LOG = log.getLogger(__name__)
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class DefaultActionPlanHandler(base.BaseActionPlanHandler):
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def __init__(self, context, service, action_plan_uuid):
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super(DefaultActionPlanHandler, self).__init__()
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self.ctx = context
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self.service = service
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self.action_plan_uuid = action_plan_uuid
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def execute(self):
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try:
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action_plan = objects.ActionPlan.get_by_uuid(
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self.ctx, self.action_plan_uuid, eager=True)
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if action_plan.state == objects.action_plan.State.CANCELLED:
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self._update_action_from_pending_to_cancelled()
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return
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action_plan.state = objects.action_plan.State.ONGOING
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action_plan.save()
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notifications.action_plan.send_action_notification(
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self.ctx, action_plan,
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action=fields.NotificationAction.EXECUTION,
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phase=fields.NotificationPhase.START)
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applier = default.DefaultApplier(self.ctx, self.service)
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applier.execute(self.action_plan_uuid)
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action_plan.state = objects.action_plan.State.SUCCEEDED
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notifications.action_plan.send_action_notification(
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self.ctx, action_plan,
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action=fields.NotificationAction.EXECUTION,
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phase=fields.NotificationPhase.END)
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except exception.ActionPlanCancelled as e:
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LOG.exception(e)
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action_plan.state = objects.action_plan.State.CANCELLED
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self._update_action_from_pending_to_cancelled()
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except Exception as e:
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LOG.exception(e)
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action_plan.state = objects.action_plan.State.FAILED
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notifications.action_plan.send_action_notification(
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self.ctx, action_plan,
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action=fields.NotificationAction.EXECUTION,
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priority=fields.NotificationPriority.ERROR,
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phase=fields.NotificationPhase.ERROR)
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finally:
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action_plan.save()
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def _update_action_from_pending_to_cancelled(self):
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filters = {'action_plan_uuid': self.action_plan_uuid,
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'state': objects.action.State.PENDING}
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actions = objects.Action.list(self.ctx, filters=filters, eager=True)
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if actions:
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for a in actions:
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a.state = objects.action.State.CANCELLED
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a.save()
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