# -*- encoding: utf-8 -*-
# Copyright (c) 2015 b<>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.
from oslo_log import log
from watcher.common import clients
from watcher.common import utils
from watcher.decision_engine.strategy.context import base
from watcher.decision_engine.strategy.selection import default
from watcher import objects
LOG = log.getLogger(__name__)
[docs]class DefaultStrategyContext(base.StrategyContext):
def __init__(self):
super(DefaultStrategyContext, self).__init__()
LOG.debug("Initializing Strategy Context")
[docs] def do_execute_strategy(self, audit, request_context):
osc = clients.OpenStackClients()
# todo(jed) retrieve in audit parameters (threshold,...)
# todo(jed) create ActionPlan
goal = objects.Goal.get_by_id(request_context, audit.goal_id)
# NOTE(jed56) In the audit object, the 'strategy_id' attribute
# is optional. If the admin wants to force the trigger of a Strategy
# it could specify the Strategy uuid in the Audit.
strategy_name = None
if audit.strategy_id:
strategy = objects.Strategy.get_by_id(
request_context, audit.strategy_id)
strategy_name = strategy.name
strategy_selector = default.DefaultStrategySelector(
goal_name=goal.name,
strategy_name=strategy_name,
osc=osc)
selected_strategy = strategy_selector.select()
selected_strategy.audit_scope = audit.scope
schema = selected_strategy.get_schema()
if not audit.parameters and schema:
# Default value feedback if no predefined strategy
utils.StrictDefaultValidatingDraft4Validator(schema).validate(
audit.parameters)
selected_strategy.input_parameters.update({
name: value for name, value in audit.parameters.items()
})
return selected_strategy.execute()
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