monasca-analytics/main/voter/pick_index.py

56 lines
1.6 KiB
Python

#!/usr/bin/env python
# Copyright (c) 2016 Hewlett Packard Enterprise Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not used 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 logging
import schema
from main.voter import base
logger = logging.getLogger(__name__)
class PickIndexVoter(base.BaseVoter):
def __init__(self, _id, _config):
super(PickIndexVoter, self).__init__(_id, _config)
self._index = _config["params"]["index"]
self._index = 0
@staticmethod
def validate_config(_config):
schema.Schema({
"module": schema.And(basestring,
lambda i: not any(c.isspace() for c in i)),
"params": {
"index": schema.And(int, lambda i: i >= 0)
}
}).validate(_config)
@staticmethod
def get_default_config():
return {
"module": PickIndexVoter.__name__,
"params": {
"index": 0
}
}
def elect_structure(self, structures):
return structures[
min(len(structures) - 1,
self._index)]