src/com/owncloud/android/operations/SynchronizeFolderOperation.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 com.owncloud.android.operations;
  20
  21 import java.io.IOException;
  22 import java.util.List;
  23 import java.util.Vector;
  24
  25 import org.apache.http.HttpStatus;
  26 import org.apache.jackrabbit.webdav.DavException;
  27 import org.apache.jackrabbit.webdav.MultiStatus;
  28 import org.apache.jackrabbit.webdav.client.methods.PropFindMethod;
  29
  30 import android.accounts.Account;
  31 import android.content.Intent;
  32 import android.util.Log;
  33
  34 import com.owncloud.android.datamodel.FileDataStorageManager;
  35 import com.owncloud.android.datamodel.OCFile;
  36 import com.owncloud.android.files.services.FileDownloader;
  37
  38 import eu.alefzero.webdav.WebdavClient;
  39 import eu.alefzero.webdav.WebdavEntry;
  40 import eu.alefzero.webdav.WebdavUtils;
  41
  42
  43 /**
  44  * Remote operation performing the synchronization a the contents of a remote folder with the local database
  45  *
  46  * @author David A. Velasco
  47  */
  48 public class SynchronizeFolderOperation extends RemoteOperation {
  49
  50     private static final String TAG = SynchronizeFolderOperation.class.getCanonicalName();
  51
  52     /** Remote folder to synchronize */
  53     private String mRemotePath;
  54
  55     /** Timestamp for the synchronization in progress */
  56     private long mCurrentSyncTime;
  57
  58     /** Id of the folder to synchronize in the local database */
  59     private long mParentId;
  60
  61     /** Access to the local database */
  62     private FileDataStorageManager mStorageManager;
  63
  64     /** Account where the file to synchronize belongs */
  65     private Account mAccount;
  66
  67
  68     SynchronizeFolderOperation(String remotePath, long currentSyncTime, long parentId, FileDataStorageManager storageManager, Account account) {
  69         mRemotePath = remotePath;
  70         mCurrentSyncTime = currentSyncTime;
  71         mParentId = parentId;
  72         mStorageManager = storageManager;
  73         mAccount = account;
  74     }
  75
  76
  77     @Override
  78     protected RemoteOperationResult run(WebdavClient client) {
  79         RemoteOperationResult result = null;
  80
  81         // code before in FileSyncAdapter.fetchData
  82         PropFindMethod query = null;
  83         Vector<OCFile> children = null;
  84         try {
  85             Log.d(TAG, "Fetching files in " + mRemotePath);
  86
  87             // remote request
  88             query = new PropFindMethod(client.getBaseUri() + WebdavUtils.encodePath(mRemotePath));
  89             int status = client.executeMethod(query);
  90
  91             if (isSuccess(status)) {
  92
  93                 MultiStatus resp = query.getResponseBodyAsMultiStatus();
  94
  95                 // reading files
  96                 List<OCFile> updatedFiles = new Vector<OCFile>(resp.getResponses().length - 1);
  97                 for (int i = 1; i < resp.getResponses().length; ++i) {
  98                     WebdavEntry we = new WebdavEntry(resp.getResponses()[i], client.getBaseUri().getPath());
  99                     OCFile file = fillOCFile(we);
 100                     file.setParentId(mParentId);
 101                     OCFile oldFile = mStorageManager.getFileByPath(file.getRemotePath());
 102                     if (oldFile != null) {
 103                         if (oldFile.keepInSync() && file.getModificationTimestamp() > oldFile.getModificationTimestamp()) {
 104                             requestContentDownload();
 105                         }
 106                         file.setKeepInSync(oldFile.keepInSync());
 107                     }
 108
 109                     updatedFiles.add(file);
 110                 }
 111
 112
 113                 // save updated files in local database; all at once, trying to get a best performance in database update (not a big deal, indeed)
 114                 mStorageManager.saveFiles(updatedFiles);
 115
 116
 117                 // removal of obsolete files
 118                 children = mStorageManager.getDirectoryContent(mStorageManager.getFileById(mParentId));
 119                 OCFile file;
 120                 String currentSavePath = FileDownloader.getSavePath(mAccount.name);
 121                 for (int i=0; i < children.size(); ) {
 122                     file = children.get(i);
 123                     if (file.getLastSyncDate() != mCurrentSyncTime) {
 124                         Log.d(TAG, "removing file: " + file);
 125                         mStorageManager.removeFile(file, (file.isDown() && file.getStoragePath().startsWith(currentSavePath)));
 126                         children.remove(i);
 127                     } else {
 128                         i++;
 129                     }
 130                 }
 131
 132             } else if (status == HttpStatus.SC_UNAUTHORIZED) {
 133                 syncResult.stats.numAuthExceptions++;
 134
 135             } else {
 136                 // TODO something smart with syncResult? OR NOT
 137             }
 138
 139             result = new RemoteOperationResult(isSuccess(status), status);
 140             Log.i(TAG, "Synchronization of " + mRemotePath + ": " + result.getLogMessage());
 141
 142
 143         } catch (IOException e) {
 144             syncResult.stats.numIoExceptions++;
 145             logException(e, uri);
 146
 147         } catch (DavException e) {
 148             syncResult.stats.numParseExceptions++;
 149             logException(e, uri);
 150
 151         } catch (Exception e) {
 152             // TODO something smart with syncresult
 153             mRightSync = false;
 154             logException(e, uri);
 155
 156         } finally {
 157             if (query != null)
 158                 query.releaseConnection();  // let the connection available for other methods
 159
 160             // synchronized folder -> notice to UI
 161             sendStickyBroadcast(true, getStorageManager().getFileById(parentId).getRemotePath());
 162         }
 163
 164
 165         return result;
 166     }
 167
 168
 169     public boolean isSuccess(int status) {
 170         return (status == HttpStatus.SC_MULTI_STATUS); // TODO check other possible OK codes; doc doesn't help
 171     }
 172
 173
 174     private void requestContentDownload() {
 175         Intent intent = new Intent(this.getContext(), FileDownloader.class);
 176         intent.putExtra(FileDownloader.EXTRA_ACCOUNT, getAccount());
 177         intent.putExtra(FileDownloader.EXTRA_FILE, file);
 178         file.setKeepInSync(true);
 179         getContext().startService(intent);
 180     }
 181
 182
 183     private OCFile fillOCFile(WebdavEntry we) {
 184         OCFile file = new OCFile(we.decodedPath());
 185         file.setCreationTimestamp(we.createTimestamp());
 186         file.setFileLength(we.contentLength());
 187         file.setMimetype(we.contentType());
 188         file.setModificationTimestamp(we.modifiedTimesamp());
 189         file.setLastSyncDate(mCurrentSyncTime);
 190         return file;
 191     }
 192
 193 }