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watcher/watcher/applier/actions/nop.py

86 lines
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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 jsonschema
from oslo_log import log
from watcher.applier.actions import base
LOG = log.getLogger(__name__)
class Nop(base.BaseAction):
"""logs a message
The action schema is::
schema = Schema({
'message': str,
})
The `message` is the actual message that will be logged.
"""
MESSAGE = 'message'
@property
def schema(self):
return {
'type': 'object',
'properties': {
'message': {
'type': ['string', 'null']
}
},
'required': ['message'],
'additionalProperties': False,
}
def validate_parameters(self):
try:
jsonschema.validate(self.input_parameters, self.schema)
return True
except jsonschema.ValidationError as e:
raise e
@property
def message(self):
return self.input_parameters.get(self.MESSAGE)
def execute(self):
LOG.debug("Executing action NOP message: %s ", self.message)
return True
def revert(self):
LOG.debug("Revert action NOP")
return True
def pre_condition(self):
pass
def post_condition(self):
pass
def get_description(self):
"""Description of the action"""
return "Logging a NOP message"
def abort(self):
LOG.debug("Abort action NOP")