| /* |
| * 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.wayang.java.platform; |
| |
| import org.apache.wayang.core.api.Configuration; |
| import org.apache.wayang.core.optimizer.costs.LoadProfileToTimeConverter; |
| import org.apache.wayang.core.optimizer.costs.LoadToTimeConverter; |
| import org.apache.wayang.core.optimizer.costs.TimeToCostConverter; |
| import org.apache.wayang.core.platform.Executor; |
| import org.apache.wayang.core.platform.Platform; |
| import org.apache.wayang.core.util.ReflectionUtils; |
| import org.apache.wayang.java.execution.JavaExecutor; |
| |
| /** |
| * {@link Platform} for a single JVM executor based on the {@link java.util.stream.Stream} library. |
| */ |
| public class JavaPlatform extends Platform { |
| |
| private static final String PLATFORM_NAME = "Java Streams"; |
| |
| private static final String CONFIG_NAME = "java"; |
| |
| private static final String DEFAULT_CONFIG_FILE = "wayang-java-defaults.properties"; |
| |
| private static JavaPlatform instance = null; |
| |
| public static JavaPlatform getInstance() { |
| if (instance == null) { |
| instance = new JavaPlatform(); |
| } |
| return instance; |
| } |
| |
| private JavaPlatform() { |
| super(PLATFORM_NAME, CONFIG_NAME); |
| } |
| |
| @Override |
| public void configureDefaults(Configuration configuration) { |
| configuration.load(ReflectionUtils.loadResource(DEFAULT_CONFIG_FILE)); |
| } |
| |
| @Override |
| public Executor.Factory getExecutorFactory() { |
| return job -> new JavaExecutor(this, job); |
| } |
| |
| @Override |
| public LoadProfileToTimeConverter createLoadProfileToTimeConverter(Configuration configuration) { |
| int cpuMhz = (int) configuration.getLongProperty("wayang.java.cpu.mhz"); |
| int numCores = (int) configuration.getLongProperty("wayang.java.cores"); |
| double hdfsMsPerMb = configuration.getDoubleProperty("wayang.java.hdfs.ms-per-mb"); |
| double stretch = configuration.getDoubleProperty("wayang.java.stretch"); |
| return LoadProfileToTimeConverter.createTopLevelStretching( |
| LoadToTimeConverter.createLinearCoverter(1 / (numCores * cpuMhz * 1000d)), |
| LoadToTimeConverter.createLinearCoverter(hdfsMsPerMb / 1000000d), |
| LoadToTimeConverter.createLinearCoverter(0), |
| (cpuEstimate, diskEstimate, networkEstimate) -> cpuEstimate.plus(diskEstimate).plus(networkEstimate), |
| stretch |
| ); |
| } |
| |
| @Override |
| public TimeToCostConverter createTimeToCostConverter(Configuration configuration) { |
| return new TimeToCostConverter( |
| configuration.getDoubleProperty("wayang.java.costs.fix"), |
| configuration.getDoubleProperty("wayang.java.costs.per-ms") |
| ); |
| } |
| } |