com.hpe.caf.api.autoscale.WorkloadAnalyser Maven / Gradle / Ivy
/*
* Copyright 2015-2017 Hewlett Packard Enterprise Development LP.
*
* 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.
*/
package com.hpe.caf.api.autoscale;
/**
* A WorkloadAnalyser examines the workload of a service and makes
* recommendations upon how to scale it at a given time.
*/
public interface WorkloadAnalyser
{
/**
* Analyse the workload of a service given information on its
* current instances, and make a recommendation on how to scale it.
* @param instanceInfo information on the currently running instances of a service
* @return a recommendation on how to scale this service (if at all)
* @throws ScalerException if the workload analysis fails
*/
ScalingAction analyseWorkload(InstanceInfo instanceInfo)
throws ScalerException;
}