| /* |
| * 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.karaf.features.internal.download.impl; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.util.concurrent.ScheduledExecutorService; |
| |
| import org.apache.karaf.features.internal.download.StreamProvider; |
| |
| public abstract class AbstractDownloadTask extends DefaultFuture<AbstractDownloadTask> implements Runnable, StreamProvider { |
| |
| protected final String url; |
| protected ScheduledExecutorService executorService; |
| |
| public AbstractDownloadTask(ScheduledExecutorService executorService, String url) { |
| this.executorService = executorService; |
| this.url = url; |
| } |
| |
| public String getUrl() { |
| return url; |
| } |
| |
| public File getFile() throws IOException { |
| Object v = getValue(); |
| if (v instanceof File) { |
| return (File) v; |
| } else if (v instanceof IOException) { |
| throw (IOException) v; |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public InputStream open() throws IOException { |
| return new FileInputStream(getFile()); |
| } |
| |
| public void setFile(File file) { |
| if (file == null) { |
| throw new NullPointerException("file"); |
| } |
| setValue(file); |
| } |
| |
| public void setException(IOException exception) { |
| if (exception == null) { |
| throw new NullPointerException("exception"); |
| } |
| setValue(exception); |
| } |
| |
| } |