ea01031268
This patch updates the applier's abstract methods to be consistent with other abstract methods of similar nature. Also included are a few other miscellaneous changes. Change-Id: Ia1527c00332011412aba2ab326ec986f1e773001 Closes-bug: 1606634
104 lines
3.2 KiB
Python
104 lines
3.2 KiB
Python
# -*- encoding: utf-8 -*-
|
|
# Copyright (c) 2015 b<>com
|
|
#
|
|
# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
|
|
#
|
|
# 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 six
|
|
import voluptuous
|
|
|
|
from watcher._i18n import _
|
|
from watcher.applier.actions import base
|
|
from watcher.common import exception
|
|
from watcher.common import nova_helper
|
|
from watcher.decision_engine.model import element
|
|
|
|
|
|
class ChangeNovaServiceState(base.BaseAction):
|
|
"""Disables or enables the nova-compute service, deployed on a host
|
|
|
|
By using this action, you will be able to update the state of a
|
|
nova-compute service. A disabled nova-compute service can not be selected
|
|
by the nova scheduler for future deployment of server.
|
|
|
|
The action schema is::
|
|
|
|
schema = Schema({
|
|
'resource_id': str,
|
|
'state': str,
|
|
})
|
|
|
|
The `resource_id` references a nova-compute service name (list of available
|
|
nova-compute services is returned by this command: ``nova service-list
|
|
--binary nova-compute``).
|
|
The `state` value should either be `ONLINE` or `OFFLINE`.
|
|
"""
|
|
|
|
STATE = 'state'
|
|
|
|
@property
|
|
def schema(self):
|
|
return voluptuous.Schema({
|
|
voluptuous.Required(self.RESOURCE_ID):
|
|
voluptuous.All(
|
|
voluptuous.Any(*six.string_types),
|
|
voluptuous.Length(min=1)),
|
|
voluptuous.Required(self.STATE):
|
|
voluptuous.Any(*[state.value
|
|
for state in list(element.ServiceState)]),
|
|
})
|
|
|
|
@property
|
|
def host(self):
|
|
return self.resource_id
|
|
|
|
@property
|
|
def state(self):
|
|
return self.input_parameters.get(self.STATE)
|
|
|
|
def execute(self):
|
|
target_state = None
|
|
if self.state == element.ServiceState.DISABLED.value:
|
|
target_state = False
|
|
elif self.state == element.ServiceState.ENABLED.value:
|
|
target_state = True
|
|
return self._nova_manage_service(target_state)
|
|
|
|
def revert(self):
|
|
target_state = None
|
|
if self.state == element.ServiceState.DISABLED.value:
|
|
target_state = True
|
|
elif self.state == element.ServiceState.ENABLED.value:
|
|
target_state = False
|
|
return self._nova_manage_service(target_state)
|
|
|
|
def _nova_manage_service(self, state):
|
|
if state is None:
|
|
raise exception.IllegalArgumentException(
|
|
message=_("The target state is not defined"))
|
|
|
|
nova = nova_helper.NovaHelper(osc=self.osc)
|
|
if state is True:
|
|
return nova.enable_service_nova_compute(self.host)
|
|
else:
|
|
return nova.disable_service_nova_compute(self.host)
|
|
|
|
def pre_condition(self):
|
|
pass
|
|
|
|
def post_condition(self):
|
|
pass
|