| /** |
| * Licensed to jclouds, Inc. (jclouds) under one or more |
| * contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. jclouds 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.jclouds.virtualbox.functions.admin; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static com.google.common.io.ByteStreams.copy; |
| import static com.google.common.io.Closeables.closeQuietly; |
| import static org.jclouds.virtualbox.config.VirtualBoxConstants.VIRTUALBOX_WORKINGDIR; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.net.URI; |
| |
| import javax.annotation.Resource; |
| import javax.inject.Inject; |
| import javax.inject.Named; |
| |
| import org.jclouds.compute.reference.ComputeServiceConstants; |
| import org.jclouds.javax.annotation.Nullable; |
| import org.jclouds.logging.Logger; |
| import org.jclouds.rest.HttpClient; |
| |
| import com.google.common.base.Function; |
| |
| /** |
| * @author Mattias Holmqvist |
| */ |
| public class FileDownloadFromURI implements Function<URI, File> { |
| |
| @Resource |
| @Named(ComputeServiceConstants.COMPUTE_LOGGER) |
| protected Logger logger = Logger.NULL; |
| |
| private final HttpClient client; |
| private final String workingDir; |
| |
| @Inject |
| public FileDownloadFromURI(HttpClient client, @Named(VIRTUALBOX_WORKINGDIR) String workingDir) { |
| this.client = client; |
| this.workingDir = workingDir; |
| } |
| |
| @Override |
| public File apply(@Nullable URI input) { |
| |
| final File file = new File(workingDir, new File(input.getPath()).getName()); |
| |
| if (!file.exists()) { |
| final InputStream inputStream = client.get(input); |
| checkNotNull(inputStream, "%s not found", input); |
| try { |
| copy(inputStream, new FileOutputStream(file)); |
| return file; |
| } catch (FileNotFoundException e) { |
| logger.error(e, "File %s could not be found", file); |
| } catch (IOException e) { |
| logger.error(e, "Error when downloading file %s", input); |
| } finally { |
| closeQuietly(inputStream); |
| } |
| return null; |
| } else { |
| logger.debug("File %s already exists. Skipping download", file); |
| return file; |
| } |
| } |
| } |