src/eu/alefzero/webdav/FileRequestEntity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012 Bartek Przybylski
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 3 of the License, or
   7  *   (at your option) any later version.
   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 eu.alefzero.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.network.ProgressiveDataTransferer;
  35
  36 import eu.alefzero.webdav.OnDatatransferProgressListener;
  37
  38 import android.util.Log;
  39
  40
  41 /**
  42  * A RequestEntity that represents a File.
  43  *
  44  */
  45 public class FileRequestEntity implements RequestEntity, ProgressiveDataTransferer {
  46
  47     final File mFile;
  48     final String mContentType;
  49     Set<OnDatatransferProgressListener> mDataTransferListeners = new HashSet<OnDatatransferProgressListener>();
  50
  51     public FileRequestEntity(final File file, final String contentType) {
  52         super();
  53         this.mFile = file;
  54         this.mContentType = contentType;
  55         if (file == null) {
  56             throw new IllegalArgumentException("File may not be null");
  57         }
  58     }
  59
  60     @Override
  61     public long getContentLength() {
  62         return mFile.length();
  63     }
  64
  65     @Override
  66     public String getContentType() {
  67         return mContentType;
  68     }
  69
  70     @Override
  71     public boolean isRepeatable() {
  72         return true;
  73     }
  74
  75     @Override
  76     public void addDatatransferProgressListener(OnDatatransferProgressListener listener) {
  77         synchronized (mDataTransferListeners) {
  78             mDataTransferListeners.add(listener);
  79         }
  80     }
  81
  82     @Override
  83     public void addDatatransferProgressListeners(Collection<OnDatatransferProgressListener> listeners) {
  84         synchronized (mDataTransferListeners) {
  85             mDataTransferListeners.addAll(listeners);
  86         }
  87     }
  88
  89     @Override
  90     public void removeDatatransferProgressListener(OnDatatransferProgressListener listener) {
  91         synchronized (mDataTransferListeners) {
  92             mDataTransferListeners.remove(listener);
  93         }
  94     }
  95
  96
  97     @Override
  98     public void writeRequest(final OutputStream out) throws IOException {
  99         //byte[] tmp = new byte[4096];
 100         ByteBuffer tmp = ByteBuffer.allocate(4096);
 101         int readResult = 0;
 102
 103         // TODO(bprzybylski): each mem allocation can throw OutOfMemoryError we need to handle it
 104         //                    globally in some fashionable manner
 105         RandomAccessFile raf = new RandomAccessFile(mFile, "r");
 106         FileChannel channel = raf.getChannel();
 107         Iterator<OnDatatransferProgressListener> it = null;
 108         long transferred = 0;
 109         long size = mFile.length();
 110         if (size == 0) size = -1;
 111         try {
 112             while ((readResult = channel.read(tmp)) >= 0) {
 113                 out.write(tmp.array(), 0, readResult);
 114                 tmp.clear();
 115                 transferred += readResult;
 116                 synchronized (mDataTransferListeners) {
 117                     it = mDataTransferListeners.iterator();
 118                     while (it.hasNext()) {
 119                         it.next().onTransferProgress(readResult, transferred, size, mFile.getName());
 120                     }
 121                 }
 122             }
 123
 124         } catch (IOException io) {
 125             Log.e("FileRequestException", io.getMessage());
 126             throw new RuntimeException("Ugly solution to workaround the default policy of retries when the server falls while uploading ; temporal fix; really", io);
 127
 128         } finally {
 129             channel.close();
 130             raf.close();
 131         }
 132     }
 133
 134 }