#!/usr/bin/env python3
# -*- encoding: utf-8 -*-

#  Licensed to the Apache Software Foundation (ASF) under one
#  or more contributor license agreements.  See the NOTICE file
#  distributed with this work for additional information
#  regarding copyright ownership.  The ASF licenses this file
#  to you 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.

''' query.py '''


class QueryHandler(object):
  ''' QueryHandler '''

  def fetch(self, cluster, metric, topology, component, instance, timerange, envirn=None):
    '''
    :param cluster:
    :param metric:
    :param topology:
    :param component:
    :param instance:
    :param timerange:
    :param envirn:
    :return:
    '''
    pass

  def fetch_max(self, cluster, metric, topology, component, instance, timerange, envirn=None):
    '''
    :param cluster:
    :param metric:
    :param topology:
    :param component:
    :param instance:
    :param timerange:
    :param envirn:
    :return:
    '''
    pass

  def fetch_backpressure(self, cluster, metric, topology, component, instance, \
    timerange, is_max, environ=None):
    '''
    :param cluster:
    :param metric:
    :param topology:
    :param component:
    :param instance:
    :param timerange:
    :param is_max:
    :param environ:
    :return:
    '''
    pass