| /* |
| * 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.nemo.compiler.optimizer.policy; |
| |
| import org.apache.nemo.common.ir.IRDAG; |
| import org.apache.nemo.compiler.optimizer.pass.compiletime.annotating.DefaultDataStorePass; |
| import org.apache.nemo.compiler.optimizer.pass.compiletime.annotating.DefaultParallelismPass; |
| import org.apache.nemo.compiler.optimizer.pass.compiletime.annotating.DefaultScheduleGroupPass; |
| import org.apache.nemo.compiler.optimizer.pass.compiletime.composite.CompositePass; |
| import org.apache.nemo.compiler.optimizer.pass.runtime.Message; |
| |
| import java.util.Arrays; |
| |
| /** |
| * A simple example policy to demonstrate a policy with a separate, refactored pass. |
| * It simply performs what is done with the default pass. |
| * This example simply shows that users can define their own pass in their policy. |
| */ |
| public final class DefaultPolicyWithSeparatePass implements Policy { |
| public static final PolicyBuilder BUILDER = |
| new PolicyBuilder() |
| .registerCompileTimePass(new DefaultParallelismPass()) |
| .registerCompileTimePass(new RefactoredPass()); |
| private final Policy policy; |
| |
| /** |
| * Default constructor. |
| */ |
| public DefaultPolicyWithSeparatePass() { |
| this.policy = BUILDER.build(); |
| } |
| |
| @Override |
| public IRDAG runCompileTimeOptimization(final IRDAG dag, final String dagDirectory) { |
| return this.policy.runCompileTimeOptimization(dag, dagDirectory); |
| } |
| |
| @Override |
| public IRDAG runRunTimeOptimizations(final IRDAG dag, final Message<?> message) { |
| return this.policy.runRunTimeOptimizations(dag, message); |
| } |
| |
| /** |
| * A simple custom pass consisted of the two passes at the end of the default pass. |
| */ |
| public static final class RefactoredPass extends CompositePass { |
| /** |
| * Default constructor. |
| */ |
| RefactoredPass() { |
| super(Arrays.asList( |
| new DefaultDataStorePass(), |
| new DefaultScheduleGroupPass() |
| )); |
| } |
| } |
| } |