001package ball.util.ant.taskdefs; 002/*- 003 * ########################################################################## 004 * Utilities 005 * $Id: DownloadTask.html 5431 2020-02-12 19:03:17Z ball $ 006 * $HeadURL: svn+ssh://svn.hcf.dev/var/spool/scm/repository.svn/hcf-dev/blog/2019-07-08-fivethirtyeight-best-scrabble-string/src/main/resources/javadoc/src-html/ball/util/ant/taskdefs/DownloadTask.html $ 007 * %% 008 * Copyright (C) 2008 - 2020 Allen D. Ball 009 * %% 010 * Licensed under the Apache License, Version 2.0 (the "License"); 011 * you may not use this file except in compliance with the License. 012 * You may obtain a copy of the License at 013 * 014 * http://www.apache.org/licenses/LICENSE-2.0 015 * 016 * Unless required by applicable law or agreed to in writing, software 017 * distributed under the License is distributed on an "AS IS" BASIS, 018 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 019 * See the License for the specific language governing permissions and 020 * limitations under the License. 021 * ########################################################################## 022 */ 023import ball.net.ResponseCacheImpl; 024import java.io.File; 025import java.io.FileOutputStream; 026import java.io.InputStream; 027import java.net.ResponseCache; 028import java.net.URI; 029import java.net.URLConnection; 030import lombok.Getter; 031import lombok.NoArgsConstructor; 032import lombok.Setter; 033import lombok.ToString; 034import lombok.experimental.Accessors; 035import org.apache.commons.io.IOUtils; 036import org.apache.tools.ant.BuildException; 037import org.apache.tools.ant.Task; 038import org.apache.tools.ant.util.ClasspathUtils; 039 040/** 041 * {@link.uri http://ant.apache.org/ Ant} {@link Task} to download resources 042 * using {@link URLConnection} and {@link ResponseCacheImpl}. 043 * 044 * {@ant.task} 045 * 046 * @author {@link.uri mailto:ball@hcf.dev Allen D. Ball} 047 * @version $Revision: 5431 $ 048 */ 049@AntTask("download") 050@NoArgsConstructor @ToString 051public class DownloadTask extends Task implements AnnotatedAntTask, 052 ClasspathDelegateAntTask, 053 ConfigurableAntTask { 054 static { 055 if (ResponseCache.getDefault() == null) { 056 ResponseCache.setDefault(ResponseCacheImpl.DEFAULT); 057 } 058 } 059 060 @Getter @Setter @Accessors(chain = true, fluent = true) 061 private ClasspathUtils.Delegate delegate = null; 062 @NotNull @Getter @Setter 063 private URI uri = null; 064 @NotNull @Getter @Setter 065 private File toFile = null; 066 067 @Override 068 public void init() throws BuildException { 069 super.init(); 070 ClasspathDelegateAntTask.super.init(); 071 ConfigurableAntTask.super.init(); 072 } 073 074 @Override 075 public void execute() throws BuildException { 076 super.execute(); 077 AnnotatedAntTask.super.execute(); 078 079 try { 080 URLConnection connection = getUri().toURL().openConnection(); 081 082 try (InputStream in = connection.getInputStream(); 083 FileOutputStream out = new FileOutputStream(getToFile())) { 084 IOUtils.copy(in, out); 085 log(getUri() + " --> " + getToFile()); 086 } 087 } catch (BuildException exception) { 088 throw exception; 089 } catch (RuntimeException exception) { 090 throw exception; 091 } catch (Exception exception) { 092 throw new BuildException(exception); 093 } 094 } 095}