src/com/owncloud/android/files/services/FileDownloader.java

   1 package com.owncloud.android.files.services;
   2
   3 import java.io.File;
   4 import java.util.AbstractList;
   5 import java.util.Iterator;
   6 import java.util.Vector;
   7 import java.util.concurrent.ConcurrentHashMap;
   8 import java.util.concurrent.ConcurrentMap;
   9
  10 import com.owncloud.android.datamodel.OCFile;
  11 import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
  12 import eu.alefzero.webdav.OnDatatransferProgressListener;
  13
  14 import com.owncloud.android.network.OwnCloudClientUtils;
  15 import com.owncloud.android.operations.DownloadFileOperation;
  16 import com.owncloud.android.operations.RemoteOperationResult;
  17 import com.owncloud.android.ui.activity.FileDetailActivity;
  18 import com.owncloud.android.ui.fragment.FileDetailFragment;
  19
  20 import android.accounts.Account;
  21 import android.app.Notification;
  22 import android.app.NotificationManager;
  23 import android.app.PendingIntent;
  24 import android.app.Service;
  25 import android.content.ContentValues;
  26 import android.content.Intent;
  27 import android.net.Uri;
  28 import android.os.Binder;
  29 import android.os.Environment;
  30 import android.os.Handler;
  31 import android.os.HandlerThread;
  32 import android.os.IBinder;
  33 import android.os.Looper;
  34 import android.os.Message;
  35 import android.os.Process;
  36 import android.util.Log;
  37 import android.widget.RemoteViews;
  38
  39 import com.owncloud.android.R;
  40 import eu.alefzero.webdav.WebdavClient;
  41
  42 public class FileDownloader extends Service implements OnDatatransferProgressListener {
  43     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  44     public static final String EXTRA_FILE = "FILE";
  45
  46     public static final String DOWNLOAD_FINISH_MESSAGE = "DOWNLOAD_FINISH";
  47     public static final String EXTRA_DOWNLOAD_RESULT = "RESULT";
  48     public static final String EXTRA_FILE_PATH = "FILE_PATH";
  49     public static final String EXTRA_REMOTE_PATH = "REMOTE_PATH";
  50     public static final String ACCOUNT_NAME = "ACCOUNT_NAME";
  51
  52     private static final String TAG = "FileDownloader";
  53
  54     private Looper mServiceLooper;
  55     private ServiceHandler mServiceHandler;
  56     private IBinder mBinder;
  57     private WebdavClient mDownloadClient = null;
  58     private Account mLastAccount = null;
  59
  60     private ConcurrentMap<String, DownloadFileOperation> mPendingDownloads = new ConcurrentHashMap<String, DownloadFileOperation>();
  61     private DownloadFileOperation mCurrentDownload = null;
  62
  63     private NotificationManager mNotificationMngr;
  64     private Notification mNotification;
  65     private int mLastPercent;
  66
  67
  68     /**
  69      * Builds a key for mDownloadsInProgress from the accountName and remotePath
  70      */
  71     private String buildRemoteName(Account account, OCFile file) {
  72         return account.name + file.getRemotePath();
  73     }
  74
  75     public static final String getSavePath(String accountName) {
  76         File sdCard = Environment.getExternalStorageDirectory();
  77         return sdCard.getAbsolutePath() + "/owncloud/" + Uri.encode(accountName, "@");
  78             // URL encoding is an 'easy fix' to overcome that NTFS and FAT32 don't allow ":" in file names, that can be in the accountName since 0.1.190B
  79     }
  80
  81     public static final String getTemporalPath(String accountName) {
  82         File sdCard = Environment.getExternalStorageDirectory();
  83         return sdCard.getAbsolutePath() + "/owncloud/tmp/" + Uri.encode(accountName, "@");
  84             // URL encoding is an 'easy fix' to overcome that NTFS and FAT32 don't allow ":" in file names, that can be in the accountName since 0.1.190B
  85     }
  86
  87
  88     /**
  89      * Service initialization
  90      */
  91     @Override
  92     public void onCreate() {
  93         super.onCreate();
  94         mNotificationMngr = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
  95         HandlerThread thread = new HandlerThread("FileDownladerThread",
  96                 Process.THREAD_PRIORITY_BACKGROUND);
  97         thread.start();
  98         mServiceLooper = thread.getLooper();
  99         mServiceHandler = new ServiceHandler(mServiceLooper);
 100         mBinder = new FileDownloaderBinder();
 101     }
 102
 103
 104     /**
 105      * Entry point to add one or several files to the queue of downloads.
 106      *
 107      * New downloads are added calling to startService(), resulting in a call to this method. This ensures the service will keep on working
 108      * although the caller activity goes away.
 109      */
 110     @Override
 111     public int onStartCommand(Intent intent, int flags, int startId) {
 112         if (    !intent.hasExtra(EXTRA_ACCOUNT) ||
 113                 !intent.hasExtra(EXTRA_FILE)
 114                 /*!intent.hasExtra(EXTRA_FILE_PATH) ||
 115                 !intent.hasExtra(EXTRA_REMOTE_PATH)*/
 116            ) {
 117             Log.e(TAG, "Not enough information provided in intent");
 118             return START_NOT_STICKY;
 119         }
 120         Account account = intent.getParcelableExtra(EXTRA_ACCOUNT);
 121         OCFile file = intent.getParcelableExtra(EXTRA_FILE);
 122
 123         AbstractList<String> requestedDownloads = new Vector<String>(); // dvelasco: now this always contains just one element, but that can change in a near future (download of multiple selection)
 124         String downloadKey = buildRemoteName(account, file);
 125         try {
 126             DownloadFileOperation newDownload = new DownloadFileOperation(account, file);
 127             mPendingDownloads.putIfAbsent(downloadKey, newDownload);
 128             newDownload.addDatatransferProgressListener(this);
 129             requestedDownloads.add(downloadKey);
 130
 131         } catch (IllegalArgumentException e) {
 132             Log.e(TAG, "Not enough information provided in intent: " + e.getMessage());
 133             return START_NOT_STICKY;
 134         }
 135
 136         if (requestedDownloads.size() > 0) {
 137             Message msg = mServiceHandler.obtainMessage();
 138             msg.arg1 = startId;
 139             msg.obj = requestedDownloads;
 140             mServiceHandler.sendMessage(msg);
 141         }
 142
 143         return START_NOT_STICKY;
 144     }
 145
 146
 147     /**
 148      * Provides a binder object that clients can use to perform operations on the queue of downloads, excepting the addition of new files.
 149      *
 150      * Implemented to perform cancellation, pause and resume of existing downloads.
 151      */
 152     @Override
 153     public IBinder onBind(Intent arg0) {
 154         return mBinder;
 155     }
 156
 157
 158     /**
 159      *  Binder to let client components to perform operations on the queue of downloads.
 160      *
 161      *  It provides by itself the available operations.
 162      */
 163     public class FileDownloaderBinder extends Binder {
 164
 165         /**
 166          * Cancels a pending or current download of a remote file.
 167          *
 168          * @param account       Owncloud account where the remote file is stored.
 169          * @param file          A file in the queue of pending downloads
 170          */
 171         public void cancel(Account account, OCFile file) {
 172             DownloadFileOperation download = null;
 173             synchronized (mPendingDownloads) {
 174                 download = mPendingDownloads.remove(buildRemoteName(account, file));
 175             }
 176             if (download != null) {
 177                 download.cancel();
 178             }
 179         }
 180
 181
 182         /**
 183          * Returns True when the file referred by 'remotePath' in the ownCloud account 'account' is downloading
 184          *
 185          * @param account       Owncloud account where the remote file is stored.
 186          * @param file          A file in the queue of downloads.
 187          */
 188         public boolean isDownloading(Account account, OCFile file) {
 189             synchronized (mPendingDownloads) {
 190                 return (mPendingDownloads.containsKey(buildRemoteName(account, file)));
 191             }
 192         }
 193     }
 194
 195
 196     /**
 197      * Download worker. Performs the pending downloads in the order they were requested.
 198      *
 199      * Created with the Looper of a new thread, started in {@link FileUploader#onCreate()}.
 200      */
 201     private final class ServiceHandler extends Handler {
 202         public ServiceHandler(Looper looper) {
 203             super(looper);
 204         }
 205
 206         @Override
 207         public void handleMessage(Message msg) {
 208             @SuppressWarnings("unchecked")
 209             AbstractList<String> requestedDownloads = (AbstractList<String>) msg.obj;
 210             if (msg.obj != null) {
 211                 Iterator<String> it = requestedDownloads.iterator();
 212                 while (it.hasNext()) {
 213                     downloadFile(it.next());
 214                 }
 215             }
 216             stopSelf(msg.arg1);
 217         }
 218     }
 219
 220
 221
 222     /**
 223      * Core download method: requests a file to download and stores it.
 224      *
 225      * @param downloadKey   Key to access the download to perform, contained in mPendingDownloads
 226      */
 227     private void downloadFile(String downloadKey) {
 228
 229         synchronized(mPendingDownloads) {
 230             mCurrentDownload = mPendingDownloads.get(downloadKey);
 231         }
 232
 233         if (mCurrentDownload != null) {
 234
 235             notifyDownloadStart(mCurrentDownload);
 236
 237             /// prepare client object to send the request to the ownCloud server
 238             if (mDownloadClient == null || mLastAccount != mCurrentDownload.getAccount()) {
 239                 mLastAccount = mCurrentDownload.getAccount();
 240                 mDownloadClient = OwnCloudClientUtils.createOwnCloudClient(mLastAccount, getApplicationContext());
 241             }
 242
 243             /// perform the download
 244             RemoteOperationResult downloadResult = null;
 245             try {
 246                 downloadResult = mCurrentDownload.execute(mDownloadClient);
 247                 if (downloadResult.isSuccess()) {
 248                     ContentValues cv = new ContentValues();
 249                     cv.put(ProviderTableMeta.FILE_STORAGE_PATH, mCurrentDownload.getSavePath());
 250                     getContentResolver().update(
 251                             ProviderTableMeta.CONTENT_URI,
 252                             cv,
 253                             ProviderTableMeta.FILE_NAME + "=? AND "
 254                                     + ProviderTableMeta.FILE_ACCOUNT_OWNER + "=?",
 255                                     new String[] {
 256                                     mCurrentDownload.getSavePath().substring(mCurrentDownload.getSavePath().lastIndexOf('/') + 1),
 257                                     mLastAccount.name });
 258                 }
 259
 260             } finally {
 261                 mPendingDownloads.remove(downloadKey);
 262             }
 263
 264
 265             /// notify result
 266             notifyDownloadResult(mCurrentDownload, downloadResult);
 267
 268             sendFinalBroadcast(mCurrentDownload, downloadResult);
 269         }
 270     }
 271
 272
 273     /**
 274      * Callback method to update the progress bar in the status notification.
 275      */
 276     @Override
 277     public void onTransferProgress(long progressRate, long totalTransferredSoFar, long totalToTransfer, String fileName) {
 278         int percent = (int)(100.0*((double)totalTransferredSoFar)/((double)totalToTransfer));
 279         if (percent != mLastPercent) {
 280           mNotification.contentView.setProgressBar(R.id.status_progress, 100, percent, totalToTransfer == -1);
 281           mNotification.contentView.setTextViewText(R.id.status_text, String.format(getString(R.string.downloader_download_in_progress_content), percent, fileName));
 282           mNotificationMngr.notify(R.string.downloader_download_in_progress_ticker, mNotification);
 283         }
 284         mLastPercent = percent;
 285     }
 286
 287
 288     /**
 289      * Callback method to update the progress bar in the status notification (old version)
 290      */
 291     @Override
 292     public void onTransferProgress(long progressRate) {
 293         // NOTHING TO DO HERE ANYMORE
 294     }
 295
 296
 297     /**
 298      * Creates a status notification to show the download progress
 299      *
 300      * @param download  Download operation starting.
 301      */
 302     private void notifyDownloadStart(DownloadFileOperation download) {
 303         /// create status notification to show the download progress
 304         mLastPercent = 0;
 305         mNotification = new Notification(R.drawable.icon, getString(R.string.downloader_download_in_progress_ticker), System.currentTimeMillis());
 306         mNotification.flags |= Notification.FLAG_ONGOING_EVENT;
 307         mNotification.contentView = new RemoteViews(getApplicationContext().getPackageName(), R.layout.progressbar_layout);
 308         mNotification.contentView.setProgressBar(R.id.status_progress, 100, 0, download.getSize() == -1);
 309         mNotification.contentView.setTextViewText(R.id.status_text, String.format(getString(R.string.downloader_download_in_progress_content), 0, new File(download.getSavePath()).getName()));
 310         mNotification.contentView.setImageViewResource(R.id.status_icon, R.drawable.icon);
 311
 312         /// includes a pending intent in the notification showing the details view of the file
 313         Intent showDetailsIntent = new Intent(this, FileDetailActivity.class);
 314         showDetailsIntent.putExtra(FileDetailFragment.EXTRA_FILE, download.getFile());
 315         showDetailsIntent.putExtra(FileDetailFragment.EXTRA_ACCOUNT, download.getAccount());
 316         showDetailsIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 317         mNotification.contentIntent = PendingIntent.getActivity(getApplicationContext(), 0, showDetailsIntent, PendingIntent.FLAG_UPDATE_CURRENT);
 318
 319         mNotificationMngr.notify(R.string.downloader_download_in_progress_ticker, mNotification);
 320     }
 321
 322
 323     /**
 324      * Updates the status notification with the result of a download operation.
 325      *
 326      * @param downloadResult    Result of the download operation.
 327      * @param download          Finished download operation
 328      */
 329     private void notifyDownloadResult(DownloadFileOperation download, RemoteOperationResult downloadResult) {
 330         mNotificationMngr.cancel(R.string.downloader_download_in_progress_ticker);
 331         if (!downloadResult.isCancelled()) {
 332             int tickerId = (downloadResult.isSuccess()) ? R.string.downloader_download_succeeded_ticker : R.string.downloader_download_failed_ticker;
 333             int contentId = (downloadResult.isSuccess()) ? R.string.downloader_download_succeeded_content : R.string.downloader_download_failed_content;
 334             Notification finalNotification = new Notification(R.drawable.icon, getString(tickerId), System.currentTimeMillis());
 335             finalNotification.flags |= Notification.FLAG_AUTO_CANCEL;
 336             // TODO put something smart in the contentIntent below
 337             finalNotification.contentIntent = PendingIntent.getActivity(getApplicationContext(), 0, new Intent(), PendingIntent.FLAG_UPDATE_CURRENT);
 338             finalNotification.setLatestEventInfo(getApplicationContext(), getString(tickerId), String.format(getString(contentId), new File(download.getSavePath()).getName()), finalNotification.contentIntent);
 339             mNotificationMngr.notify(tickerId, finalNotification);
 340         }
 341     }
 342
 343
 344     /**
 345      * Sends a broadcast in order to the interested activities can update their view
 346      *
 347      * @param download          Finished download operation
 348      * @param downloadResult    Result of the download operation
 349      */
 350     private void sendFinalBroadcast(DownloadFileOperation download, RemoteOperationResult downloadResult) {
 351         Intent end = new Intent(DOWNLOAD_FINISH_MESSAGE);
 352         end.putExtra(EXTRA_DOWNLOAD_RESULT, downloadResult.isSuccess());
 353         end.putExtra(ACCOUNT_NAME, download.getAccount().name);
 354         end.putExtra(EXTRA_REMOTE_PATH, download.getRemotePath());
 355         if (downloadResult.isSuccess()) {
 356             end.putExtra(EXTRA_FILE_PATH, download.getSavePath());
 357         }
 358         sendBroadcast(end);
 359     }
 360
 361 }