# -*- encoding: utf-8 -*-
# Copyright (c) 2017 ZTE
#
# Authors: Li Canwei
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import enum
import time
from watcher._i18n import _
from watcher.applier.actions import base
from watcher.common import exception
[docs]class ChangeNodePowerState(base.BaseAction):
"""Compute node power on/off
By using this action, you will be able to on/off the power of a
compute node.
The action schema is::
schema = Schema({
'resource_id': str,
'state': str,
})
The `resource_id` references a ironic node id (list of available
ironic node is returned by this command: ``ironic node-list``).
The `state` value should either be `on` or `off`.
"""
STATE = 'state'
@property
def schema(self):
return {
'type': 'object',
'properties': {
'resource_id': {
'type': 'string',
"minlength": 1
},
'state': {
'type': 'string',
'enum': [NodeState.POWERON.value,
NodeState.POWEROFF.value]
}
},
'required': ['resource_id', 'state'],
'additionalProperties': False,
}
@property
def node_uuid(self):
return self.resource_id
@property
def state(self):
return self.input_parameters.get(self.STATE)
[docs] def revert(self):
if self.state == NodeState.POWERON.value:
target_state = NodeState.POWEROFF.value
elif self.state == NodeState.POWEROFF.value:
target_state = NodeState.POWERON.value
return self._node_manage_power(target_state)
def _node_manage_power(self, state, retry=60):
if state is None:
raise exception.IllegalArgumentException(
message=_("The target state is not defined"))
ironic_client = self.osc.ironic()
nova_client = self.osc.nova()
current_state = ironic_client.node.get(self.node_uuid).power_state
# power state: 'power on' or 'power off', if current node state
# is the same as state, just return True
if state in current_state:
return True
if state == NodeState.POWEROFF.value:
node_info = ironic_client.node.get(self.node_uuid).to_dict()
compute_node_id = node_info['extra']['compute_node_id']
compute_node = nova_client.hypervisors.get(compute_node_id)
compute_node = compute_node.to_dict()
if (compute_node['running_vms'] == 0):
ironic_client.node.set_power_state(
self.node_uuid, state)
else:
ironic_client.node.set_power_state(self.node_uuid, state)
ironic_node = ironic_client.node.get(self.node_uuid)
while ironic_node.power_state == current_state and retry:
time.sleep(10)
retry -= 1
ironic_node = ironic_client.node.get(self.node_uuid)
if retry > 0:
return True
else:
return False
[docs] def get_description(self):
"""Description of the action"""
return ("Compute node power on/off through ironic.")
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