| // |
| // 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 com.cloud.storage.template; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.FileChannel; |
| |
| import org.apache.log4j.Logger; |
| |
| import com.cloud.storage.StorageLayer; |
| |
| public class LocalTemplateDownloader extends TemplateDownloaderBase implements TemplateDownloader { |
| public static final Logger s_logger = Logger.getLogger(LocalTemplateDownloader.class); |
| |
| public LocalTemplateDownloader(StorageLayer storageLayer, String downloadUrl, String toDir, long maxTemplateSizeInBytes, DownloadCompleteCallback callback) { |
| super(storageLayer, downloadUrl, toDir, maxTemplateSizeInBytes, callback); |
| String filename = new File(downloadUrl).getName(); |
| _toFile = toDir.endsWith(File.separator) ? (toDir + filename) : (toDir + File.separator + filename); |
| } |
| |
| @Override |
| public long download(boolean resume, DownloadCompleteCallback callback) { |
| if (_status == Status.ABORTED || _status == Status.UNRECOVERABLE_ERROR || _status == Status.DOWNLOAD_FINISHED) { |
| return 0; |
| } |
| |
| _start = System.currentTimeMillis(); |
| _resume = resume; |
| |
| File src; |
| try { |
| src = new File(new URI(_downloadUrl)); |
| } catch (URISyntaxException e1) { |
| s_logger.warn("Invalid URI " + _downloadUrl); |
| _status = Status.UNRECOVERABLE_ERROR; |
| return 0; |
| } |
| File dst = new File(_toFile); |
| |
| FileChannel fic = null; |
| FileChannel foc = null; |
| FileInputStream fis = null; |
| FileOutputStream fos = null; |
| |
| try { |
| if (_storage != null) { |
| dst.createNewFile(); |
| _storage.setWorldReadableAndWriteable(dst); |
| } |
| |
| ByteBuffer buffer = ByteBuffer.allocate(1024 * 512); |
| |
| try { |
| fis = new FileInputStream(src); |
| } catch (FileNotFoundException e) { |
| s_logger.warn("Unable to find " + _downloadUrl); |
| _errorString = "Unable to find " + _downloadUrl; |
| return -1; |
| } |
| fic = fis.getChannel(); |
| try { |
| fos = new FileOutputStream(dst); |
| } catch (FileNotFoundException e) { |
| s_logger.warn("Unable to find " + _toFile); |
| return -1; |
| } |
| foc = fos.getChannel(); |
| |
| _remoteSize = src.length(); |
| _totalBytes = 0; |
| _status = TemplateDownloader.Status.IN_PROGRESS; |
| |
| try { |
| while (_status != Status.ABORTED && fic.read(buffer) != -1) { |
| buffer.flip(); |
| int count = foc.write(buffer); |
| _totalBytes += count; |
| buffer.clear(); |
| } |
| } catch (IOException e) { |
| s_logger.warn("Unable to download", e); |
| } |
| |
| String downloaded = "(incomplete download)"; |
| if (_totalBytes == _remoteSize) { |
| _status = TemplateDownloader.Status.DOWNLOAD_FINISHED; |
| downloaded = "(download complete)"; |
| } |
| |
| _errorString = "Downloaded " + _remoteSize + " bytes " + downloaded; |
| _downloadTime += System.currentTimeMillis() - _start; |
| return _totalBytes; |
| } catch (Exception e) { |
| _status = TemplateDownloader.Status.UNRECOVERABLE_ERROR; |
| _errorString = e.getMessage(); |
| return 0; |
| } finally { |
| if (fic != null) { |
| try { |
| fic.close(); |
| } catch (IOException e) { |
| s_logger.info("[ignore] error while closing file input channel."); |
| } |
| } |
| |
| if (foc != null) { |
| try { |
| foc.close(); |
| } catch (IOException e) { |
| s_logger.info("[ignore] error while closing file output channel."); |
| } |
| } |
| |
| if (fis != null) { |
| try { |
| fis.close(); |
| } catch (IOException e) { |
| s_logger.info("[ignore] error while closing file input stream."); |
| } |
| } |
| |
| if (fos != null) { |
| try { |
| fos.close(); |
| } catch (IOException e) { |
| s_logger.info("[ignore] error while closing file output stream."); |
| } |
| } |
| |
| if (_status == Status.UNRECOVERABLE_ERROR && dst.exists()) { |
| dst.delete(); |
| } |
| if (callback != null) { |
| callback.downloadComplete(_status); |
| } |
| } |
| } |
| } |