| /** |
| * 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.hadoop.yarn.server.resourcemanager.resource; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Evolving; |
| import org.apache.hadoop.yarn.api.records.Resource; |
| import org.apache.hadoop.yarn.util.Records; |
| |
| @Private |
| @Evolving |
| public class Resources { |
| |
| // Java doesn't have const :( |
| private static final Resource NONE = new Resource() { |
| |
| @Override |
| public int getMemory() { |
| return 0; |
| } |
| |
| @Override |
| public void setMemory(int memory) { |
| throw new RuntimeException("NONE cannot be modified!"); |
| } |
| |
| @Override |
| public int getVirtualCores() { |
| return 0; |
| } |
| |
| @Override |
| public void setVirtualCores(int cores) { |
| throw new RuntimeException("NONE cannot be modified!"); |
| } |
| |
| @Override |
| public int compareTo(Resource o) { |
| int diff = 0 - o.getMemory(); |
| if (diff == 0) { |
| diff = 0 - o.getVirtualCores(); |
| } |
| return diff; |
| } |
| |
| }; |
| |
| public static Resource createResource(int memory) { |
| return createResource(memory, (memory > 0) ? 1 : 0); |
| } |
| |
| public static Resource createResource(int memory, int cores) { |
| Resource resource = Records.newRecord(Resource.class); |
| resource.setMemory(memory); |
| resource.setVirtualCores(cores); |
| return resource; |
| } |
| |
| public static Resource none() { |
| return NONE; |
| } |
| |
| public static Resource clone(Resource res) { |
| return createResource(res.getMemory(), res.getVirtualCores()); |
| } |
| |
| public static Resource addTo(Resource lhs, Resource rhs) { |
| lhs.setMemory(lhs.getMemory() + rhs.getMemory()); |
| lhs.setVirtualCores(lhs.getVirtualCores() + rhs.getVirtualCores()); |
| return lhs; |
| } |
| |
| public static Resource add(Resource lhs, Resource rhs) { |
| return addTo(clone(lhs), rhs); |
| } |
| |
| public static Resource subtractFrom(Resource lhs, Resource rhs) { |
| lhs.setMemory(lhs.getMemory() - rhs.getMemory()); |
| lhs.setVirtualCores(lhs.getVirtualCores() - rhs.getVirtualCores()); |
| return lhs; |
| } |
| |
| public static Resource subtract(Resource lhs, Resource rhs) { |
| return subtractFrom(clone(lhs), rhs); |
| } |
| |
| public static Resource negate(Resource resource) { |
| return subtract(NONE, resource); |
| } |
| |
| public static Resource multiplyTo(Resource lhs, double by) { |
| lhs.setMemory((int)(lhs.getMemory() * by)); |
| lhs.setVirtualCores((int)(lhs.getVirtualCores() * by)); |
| return lhs; |
| } |
| |
| public static Resource multiply(Resource lhs, double by) { |
| return multiplyTo(clone(lhs), by); |
| } |
| |
| public static Resource multiplyAndNormalizeUp( |
| ResourceCalculator calculator,Resource lhs, double by, Resource factor) { |
| return calculator.multiplyAndNormalizeUp(lhs, by, factor); |
| } |
| |
| public static Resource multiplyAndNormalizeDown( |
| ResourceCalculator calculator,Resource lhs, double by, Resource factor) { |
| return calculator.multiplyAndNormalizeDown(lhs, by, factor); |
| } |
| |
| public static Resource multiplyAndRoundDown(Resource lhs, double by) { |
| Resource out = clone(lhs); |
| out.setMemory((int)(lhs.getMemory() * by)); |
| out.setVirtualCores((int)(lhs.getVirtualCores() * by)); |
| return out; |
| } |
| |
| public static Resource normalize( |
| ResourceCalculator calculator, Resource lhs, Resource factor) { |
| return calculator.normalize(lhs, factor); |
| } |
| |
| public static Resource roundUp( |
| ResourceCalculator calculator, Resource lhs, Resource factor) { |
| return calculator.roundUp(lhs, factor); |
| } |
| |
| public static Resource roundDown( |
| ResourceCalculator calculator, Resource lhs, Resource factor) { |
| return calculator.roundDown(lhs, factor); |
| } |
| |
| public static float ratio( |
| ResourceCalculator resourceCalculator, Resource lhs, Resource rhs) { |
| return resourceCalculator.ratio(lhs, rhs); |
| } |
| |
| public static float divide( |
| ResourceCalculator resourceCalculator, |
| Resource clusterResource, Resource lhs, Resource rhs) { |
| return resourceCalculator.divide(clusterResource, lhs, rhs); |
| } |
| |
| public static Resource divideAndCeil( |
| ResourceCalculator resourceCalculator, Resource lhs, int rhs) { |
| return resourceCalculator.divideAndCeil(lhs, rhs); |
| } |
| |
| public static boolean equals(Resource lhs, Resource rhs) { |
| return lhs.equals(rhs); |
| } |
| |
| public static boolean lessThan( |
| ResourceCalculator resourceCalculator, |
| Resource clusterResource, |
| Resource lhs, Resource rhs) { |
| return (resourceCalculator.compare(clusterResource, lhs, rhs) < 0); |
| } |
| |
| public static boolean lessThanOrEqual( |
| ResourceCalculator resourceCalculator, |
| Resource clusterResource, |
| Resource lhs, Resource rhs) { |
| return (resourceCalculator.compare(clusterResource, lhs, rhs) <= 0); |
| } |
| |
| public static boolean greaterThan( |
| ResourceCalculator resourceCalculator, |
| Resource clusterResource, |
| Resource lhs, Resource rhs) { |
| return resourceCalculator.compare(clusterResource, lhs, rhs) > 0; |
| } |
| |
| public static boolean greaterThanOrEqual( |
| ResourceCalculator resourceCalculator, |
| Resource clusterResource, |
| Resource lhs, Resource rhs) { |
| return resourceCalculator.compare(clusterResource, lhs, rhs) >= 0; |
| } |
| |
| public static Resource min( |
| ResourceCalculator resourceCalculator, |
| Resource clusterResource, |
| Resource lhs, Resource rhs) { |
| return resourceCalculator.compare(clusterResource, lhs, rhs) <= 0 ? lhs : rhs; |
| } |
| |
| public static Resource max( |
| ResourceCalculator resourceCalculator, |
| Resource clusterResource, |
| Resource lhs, Resource rhs) { |
| return resourceCalculator.compare(clusterResource, lhs, rhs) >= 0 ? lhs : rhs; |
| } |
| } |