ac07f35dc7
Since internationalization should be enabled in Watcher, this patchset refactors the Watcher codebase to wrap previously untranslatable strings with i18n translation functions so we can import them for translation into the .pot template file. Partially Implements: blueprint support-translation Change-Id: I425967a60b5a7957f753894e5d2ba0d2c5009d1d
83 lines
2.6 KiB
Python
83 lines
2.6 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_config import cfg
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from watcher._i18n import _
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from watcher.applier.primitives.base import BasePrimitive
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from watcher.applier.primitives.wrapper.nova_wrapper import NovaWrapper
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from watcher.applier.promise import Promise
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from watcher.common.exception import IllegalArgumentException
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from watcher.common.keystone import KeystoneClient
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from watcher.decision_engine.model.hypervisor_state import HypervisorState
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CONF = cfg.CONF
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class ChangeNovaServiceState(BasePrimitive):
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def __init__(self, host, state):
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"""This class allows us to change the state of nova-compute service.
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:param host: the uuid of the host
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:param state: (enabled/disabled)
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"""
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super(BasePrimitive, self).__init__()
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self._host = host
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self._state = state
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@property
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def host(self):
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return self._host
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@property
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def state(self):
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return self._state
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@Promise
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def execute(self):
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target_state = None
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if self.state == HypervisorState.OFFLINE.value:
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target_state = False
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elif self.status == HypervisorState.ONLINE.value:
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target_state = True
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return self.nova_manage_service(target_state)
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@Promise
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def undo(self):
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target_state = None
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if self.state == HypervisorState.OFFLINE.value:
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target_state = True
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elif self.state == HypervisorState.ONLINE.value:
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target_state = False
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return self.nova_manage_service(target_state)
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def nova_manage_service(self, state):
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if state is None:
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raise IllegalArgumentException(
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_("The target state is not defined"))
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keystone = KeystoneClient()
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wrapper = NovaWrapper(keystone.get_credentials(),
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session=keystone.get_session())
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if state is True:
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return wrapper.enable_service_nova_compute(self.host)
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else:
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return wrapper.disable_service_nova_compute(self.host)
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