| /** |
| * 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. |
| */ |
| package org.apache.pulsar.policies.data.loadbalancer; |
| |
| import lombok.EqualsAndHashCode; |
| |
| /** |
| * POJO used to represents any system specific resource usage this is the format that load manager expects it in. |
| */ |
| @EqualsAndHashCode |
| public class ResourceUsage { |
| public double usage; |
| public double limit; |
| |
| public ResourceUsage(double usage, double limit) { |
| this.usage = usage; |
| this.limit = limit; |
| } |
| |
| public ResourceUsage(ResourceUsage that) { |
| this.usage = that.usage; |
| this.limit = that.limit; |
| } |
| |
| public ResourceUsage() { |
| } |
| |
| public void reset() { |
| this.usage = -1; |
| this.limit = -1; |
| } |
| |
| /** |
| * this may be wrong since we are comparing available and not the usage. |
| * |
| * @param o |
| * @return |
| */ |
| public int compareTo(ResourceUsage o) { |
| double required = o.limit - o.usage; |
| double available = limit - usage; |
| return Double.compare(available, required); |
| } |
| |
| public float percentUsage() { |
| float proportion = 0; |
| if (limit > 0) { |
| proportion = ((float) usage) / ((float) limit); |
| } |
| return proportion * 100; |
| } |
| } |