| /* |
| * 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.flink.execution; |
| |
| import org.apache.flink.api.common.ExecutionMode; |
| import org.apache.flink.api.java.ExecutionEnvironment; |
| import org.apache.flink.api.java.utils.ParameterTool; |
| import org.apache.wayang.core.api.Configuration; |
| import org.apache.wayang.core.platform.CrossPlatformExecutor; |
| import org.apache.wayang.core.platform.ExecutionResourceTemplate; |
| |
| /** |
| * Wraps and manages a Flink {@link ExecutionEnvironment} to avoid steady re-creation. |
| */ |
| public class FlinkContextReference extends ExecutionResourceTemplate { |
| /** |
| * The wrapped {@link ExecutionEnvironment}. |
| */ |
| private ExecutionEnvironment flinkEnviroment; |
| |
| /** |
| * Creates a new instance. |
| * |
| * @param flinkEnviroment the {@link ExecutionEnvironment} to be wrapped |
| */ |
| public FlinkContextReference(CrossPlatformExecutor crossPlatformExecutor, ExecutionEnvironment flinkEnviroment, int parallelism) { |
| super(null); |
| if (crossPlatformExecutor != null) { |
| crossPlatformExecutor.registerGlobal(this); |
| } |
| this.flinkEnviroment = flinkEnviroment; |
| loadConfiguration( crossPlatformExecutor.getConfiguration(), parallelism ); |
| } |
| |
| |
| /** |
| * Provides the {@link ExecutionEnvironment}. This instance must not be disposed, yet. |
| * |
| * @return the wrapped {@link ExecutionEnvironment} |
| */ |
| public ExecutionEnvironment get() { |
| return this.flinkEnviroment; |
| } |
| |
| @Override |
| protected void doDispose() throws Throwable { |
| |
| } |
| |
| @Override |
| public boolean isDisposed() { |
| return false; |
| } |
| |
| private void loadConfiguration(Configuration conf, int parallelism){ |
| ParameterTool tools = ParameterTool.fromSystemProperties(); |
| this.flinkEnviroment.getConfig().setGlobalJobParameters(tools); |
| this.flinkEnviroment.setParallelism(parallelism); |
| |
| ExecutionMode mode = getExecutionMode(conf.getStringProperty("wayang.flink.mode.execution")); |
| |
| this.flinkEnviroment.getConfig().setExecutionMode(mode); |
| } |
| |
| private ExecutionMode getExecutionMode(String name){ |
| ExecutionMode mode; |
| switch (name){ |
| case "batch_forced": |
| mode = ExecutionMode.BATCH_FORCED; |
| break; |
| case "batch": |
| mode = ExecutionMode.BATCH; |
| break; |
| case "pipelined": |
| mode = ExecutionMode.PIPELINED; |
| break; |
| case "pipelined_forced": |
| mode = ExecutionMode.PIPELINED_FORCED; |
| break; |
| default: |
| mode = ExecutionMode.BATCH_FORCED; |
| break; |
| } |
| return mode; |
| } |
| } |