src/com/owncloud/android/network/webdav/FileRequestEntity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012 Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.network.webdav;
  20
  21 import java.io.File;
  22 import java.io.IOException;
  23 import java.io.OutputStream;
  24 import java.io.RandomAccessFile;
  25 import java.nio.ByteBuffer;
  26 import java.nio.channels.FileChannel;
  27 import java.util.Collection;
  28 import java.util.HashSet;
  29 import java.util.Iterator;
  30 import java.util.Set;
  31
  32 import org.apache.commons.httpclient.methods.RequestEntity;
  33
  34 import com.owncloud.android.Log_OC;
  35 import com.owncloud.android.network.ProgressiveDataTransferer;
  36
  37
  38
  39 /**
  40  * A RequestEntity that represents a File.
  41  *
  42  */
  43 public class FileRequestEntity implements RequestEntity, ProgressiveDataTransferer {
  44
  45     final File mFile;
  46     final String mContentType;
  47     Set<OnDatatransferProgressListener> mDataTransferListeners = new HashSet<OnDatatransferProgressListener>();
  48
  49     public FileRequestEntity(final File file, final String contentType) {
  50         super();
  51         this.mFile = file;
  52         this.mContentType = contentType;
  53         if (file == null) {
  54             throw new IllegalArgumentException("File may not be null");
  55         }
  56     }
  57
  58     @Override
  59     public long getContentLength() {
  60         return mFile.length();
  61     }
  62
  63     @Override
  64     public String getContentType() {
  65         return mContentType;
  66     }
  67
  68     @Override
  69     public boolean isRepeatable() {
  70         return true;
  71     }
  72
  73     @Override
  74     public void addDatatransferProgressListener(OnDatatransferProgressListener listener) {
  75         synchronized (mDataTransferListeners) {
  76             mDataTransferListeners.add(listener);
  77         }
  78     }
  79
  80     @Override
  81     public void addDatatransferProgressListeners(Collection<OnDatatransferProgressListener> listeners) {
  82         synchronized (mDataTransferListeners) {
  83             mDataTransferListeners.addAll(listeners);
  84         }
  85     }
  86
  87     @Override
  88     public void removeDatatransferProgressListener(OnDatatransferProgressListener listener) {
  89         synchronized (mDataTransferListeners) {
  90             mDataTransferListeners.remove(listener);
  91         }
  92     }
  93
  94
  95     @Override
  96     public void writeRequest(final OutputStream out) throws IOException {
  97         //byte[] tmp = new byte[4096];
  98         ByteBuffer tmp = ByteBuffer.allocate(4096);
  99         int readResult = 0;
 100
 101         // TODO(bprzybylski): each mem allocation can throw OutOfMemoryError we need to handle it
 102         //                    globally in some fashionable manner
 103         RandomAccessFile raf = new RandomAccessFile(mFile, "r");
 104         FileChannel channel = raf.getChannel();
 105         Iterator<OnDatatransferProgressListener> it = null;
 106         long transferred = 0;
 107         long size = mFile.length();
 108         if (size == 0) size = -1;
 109         try {
 110             while ((readResult = channel.read(tmp)) >= 0) {
 111                 out.write(tmp.array(), 0, readResult);
 112                 tmp.clear();
 113                 transferred += readResult;
 114                 synchronized (mDataTransferListeners) {
 115                     it = mDataTransferListeners.iterator();
 116                     while (it.hasNext()) {
 117                         it.next().onTransferProgress(readResult, transferred, size, mFile.getName());
 118                     }
 119                 }
 120             }
 121
 122         } catch (IOException io) {
 123             Log_OC.e("FileRequestException", io.getMessage());
 124             throw new RuntimeException("Ugly solution to workaround the default policy of retries when the server falls while uploading ; temporal fix; really", io);
 125
 126         } finally {
 127             channel.close();
 128             raf.close();
 129         }
 130     }
 131
 132 }