1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * https://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package org.apache.commons.exec; 18 19 import java.nio.file.Path; 20 import java.util.concurrent.ThreadFactory; 21 22 /** 23 * Runs daemon processes asynchronously. Callers are expected to register a {@link ProcessDestroyer} before executing any processes. 24 * 25 * @since 1.3 26 */ 27 public class DaemonExecutor extends DefaultExecutor { 28 29 /** 30 * Constructs a new builder. 31 * 32 * @since 1.4.0 33 */ 34 public static class Builder extends DefaultExecutor.Builder<Builder> { 35 36 /** 37 * Constructs a new instance. 38 */ 39 public Builder() { 40 // empty 41 } 42 43 /** 44 * Creates a new configured DaemonExecutor. 45 * 46 * @return a new configured DaemonExecutor. 47 */ 48 @Override 49 public DefaultExecutor get() { 50 return new DaemonExecutor(getThreadFactory(), getExecuteStreamHandler(), getWorkingDirectoryPath()); 51 } 52 53 } 54 55 /** 56 * Creates a new builder. 57 * 58 * @return a new builder. 59 * @since 1.4.0 60 */ 61 public static Builder builder() { 62 return new Builder(); 63 } 64 65 /** 66 * Constructs a new instance. 67 * 68 * @deprecated Use {@link Builder#get()}. 69 */ 70 @Deprecated 71 public DaemonExecutor() { 72 // super 73 } 74 75 private DaemonExecutor(final ThreadFactory threadFactory, final ExecuteStreamHandler executeStreamHandler, final Path workingDirectory) { 76 super(threadFactory, executeStreamHandler, workingDirectory); 77 } 78 79 /** 80 * Factory method to create a thread waiting for the result of an asynchronous execution. 81 * 82 * @param runnable the runnable passed to the thread. 83 * @param name the name of the thread. 84 * @return the thread. 85 */ 86 @Override 87 protected Thread createThread(final Runnable runnable, final String name) { 88 final Thread thread = super.createThread(runnable, name); 89 thread.setDaemon(true); 90 return thread; 91 } 92 }