src/com/owncloud/android/ui/activity/StorageMigrationActivity.java

   1 /**
   2  *   ownCloud Android client application
   3  *
   4  *   @author Bartosz Przybylski
   5  *   Copyright (C) 2015 ownCloud Inc.
   6  *   Copyright (C) 2015 Bartosz Przybylski
   7  *
   8  *   This program is free software: you can redistribute it and/or modify
   9  *   it under the terms of the GNU General Public License version 2,
  10  *   as published by the Free Software Foundation.
  11  *
  12  *   This program is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  */
  21 package com.owncloud.android.ui.activity;
  22
  23 import android.accounts.Account;
  24 import android.accounts.AccountManager;
  25 import android.content.ContentResolver;
  26 import android.content.Context;
  27 import android.content.Intent;
  28 import android.os.AsyncTask;
  29 import android.os.Bundle;
  30 import android.support.v7.app.AppCompatActivity;
  31 import android.view.View;
  32 import android.widget.Button;
  33 import android.widget.ProgressBar;
  34 import android.widget.TextView;
  35
  36 import com.owncloud.android.MainApp;
  37 import com.owncloud.android.R;
  38 import com.owncloud.android.datamodel.FileDataStorageManager;
  39 import com.owncloud.android.lib.common.utils.Log_OC;
  40
  41 import java.io.File;
  42 import java.io.FileInputStream;
  43 import java.io.FileOutputStream;
  44 import java.io.IOException;
  45 import java.io.InputStream;
  46 import java.io.OutputStream;
  47
  48 /**
  49  * Created by Bartosz Przybylski on 07.11.2015.
  50  */
  51 public class StorageMigrationActivity extends AppCompatActivity {
  52         private static final String TAG = StorageMigrationActivity.class.getName();
  53         public static final String KEY_MIGRATION_TARGET_DIR = "MIGRATION_TARGET";
  54         public static final String KEY_MIGRATION_SOURCE_DIR = "MIGRATION_SOURCE";
  55
  56         private ProgressBar mProgressBar;
  57         private Button mFinishButton;
  58         private TextView mFeedbackText;
  59
  60         @Override
  61         public void onCreate(Bundle savedInstanceState) {
  62                 super.onCreate(savedInstanceState);
  63
  64                 setContentView(R.layout.migration_layout);
  65                 mProgressBar = (ProgressBar)findViewById(R.id.migrationProgress);
  66                 mFinishButton = (Button)findViewById(R.id.finishButton);
  67                 mFeedbackText = (TextView)findViewById(R.id.migrationText);
  68
  69                 mProgressBar.setProgress(0);
  70                 mFinishButton.setVisibility(View.INVISIBLE);
  71                 mFeedbackText.setText(R.string.file_migration_preparing);
  72
  73                 mFinishButton.setOnClickListener(new View.OnClickListener() {
  74                         @Override
  75                         public void onClick(View view) {
  76                                 setResult(RESULT_CANCELED);
  77                                 finish();
  78                         }
  79                 });
  80
  81                 String source = getIntent().getStringExtra(KEY_MIGRATION_SOURCE_DIR);
  82                 String destination = getIntent().getStringExtra(KEY_MIGRATION_TARGET_DIR);
  83
  84                 if (source == null || destination == null) {
  85                         Log_OC.e(TAG, "source or destination is null");
  86                         finish();
  87                 }
  88
  89                 new FileMigrationTask().execute(source, destination);
  90         }
  91
  92         private class FileMigrationTask extends AsyncTask<String, Integer, Integer> {
  93
  94                 private String mStorageTarget;
  95                 private String mStorageSource;
  96                 private int mProgress;
  97
  98                 private static final int mProgressCopyUpperBound = 98;
  99
 100                 private class MigrationException extends Exception {
 101                         private int mResId;
 102                         /*
 103                          * @param resId resource identifier to use for displaying error
 104                          */
 105                         MigrationException(int resId) {
 106                                 super();
 107                                 this.mResId = resId;
 108                         }
 109
 110                         int getResId() { return mResId; }
 111                 }
 112
 113                 private class MigrationCleanupException extends Exception {
 114                         MigrationCleanupException() {}
 115                 }
 116
 117                 @Override
 118                 protected Integer doInBackground(String... args) {
 119
 120                         mStorageSource = args[0];
 121                         mStorageTarget = args[1];
 122                         mProgress = 0;
 123
 124                         publishProgress(mProgress++, R.string.file_migration_preparing);
 125
 126                         Context context = StorageMigrationActivity.this;
 127                         String ocAuthority = context.getString(R.string.authority);
 128
 129                         Account[] ocAccounts = AccountManager.get(context).getAccountsByType(MainApp.getAccountType());
 130                         boolean[] oldAutoSync = new boolean[ocAccounts.length];
 131
 132                         try {
 133                                 publishProgress(mProgress++, R.string.file_migration_checking_destination);
 134
 135                                 checkDestinationAvailability();
 136
 137                                 publishProgress(mProgress++, R.string.file_migration_saving_accounts_configuration);
 138                                 saveAccountsSyncStatus(ocAuthority, ocAccounts, oldAutoSync);
 139
 140                                 publishProgress(mProgress++, R.string.file_migration_waiting_for_unfinished_sync);
 141                                 stopAccountsSyncing(ocAuthority, ocAccounts);
 142                                 waitForUnfinishedSynchronizations(ocAuthority, ocAccounts);
 143
 144                                 publishProgress(mProgress++, R.string.file_migration_migrating);
 145                                 copyFiles();
 146
 147                                 publishProgress(mProgress++, R.string.file_migration_updating_index);
 148                                 updateIndex(context);
 149
 150                                 publishProgress(mProgress++, R.string.file_migration_cleaning);
 151                                 cleanup();
 152
 153                         } catch (MigrationException e) {
 154                                 rollback();
 155                                 return e.getResId();
 156                         } catch (MigrationCleanupException e) {
 157                                 Log_OC.w(TAG, "Migration mleanup step failed");
 158                                 return 0;
 159                         } finally {
 160                                 publishProgress(mProgress++, R.string.file_migration_restoring_accounts_configuration);
 161                                 restoreAccountsSyncStatus(ocAuthority, ocAccounts, oldAutoSync);
 162                         }
 163
 164                         publishProgress(mProgress++, R.string.file_migration_ok_finished);
 165
 166                         return 0;
 167                 }
 168
 169                 @Override
 170                 protected void onProgressUpdate(Integer... progress) {
 171                         mProgressBar.setProgress(progress[0]);
 172                         if (progress.length > 1)
 173                                 mFeedbackText.setText(progress[1]);
 174                 }
 175
 176                 @Override
 177                 protected void onPostExecute(Integer code) {
 178                         mFinishButton.setVisibility(View.VISIBLE);
 179                         if (code != 0) {
 180                                 mFeedbackText.setText(code);
 181                         } else {
 182                                 mFeedbackText.setText(R.string.file_migration_ok_finished);
 183                                 mFinishButton.setOnClickListener(new View.OnClickListener() {
 184                                         @Override
 185                                         public void onClick(View view) {
 186                                                 Intent resultIntent = new Intent();
 187                                                 resultIntent.putExtra(KEY_MIGRATION_TARGET_DIR, mStorageTarget);
 188                                                 setResult(RESULT_OK, resultIntent);
 189                                                 finish();
 190                                         }
 191                                 });
 192                         }
 193                 }
 194
 195                 void checkDestinationAvailability() throws MigrationException {
 196                         File srcFile = new File(mStorageSource);
 197                         File dstFile = new File(mStorageTarget);
 198
 199                         if (!dstFile.canRead() || !srcFile.canRead())
 200                                 throw new MigrationException(R.string.file_migration_failed_not_readable);
 201
 202                         if (!dstFile.canWrite() || !srcFile.canWrite())
 203                                 throw new MigrationException(R.string.file_migration_failed_not_writable);
 204
 205                         if (new File(dstFile, MainApp.getDataFolder()).exists())
 206                                 throw new MigrationException(R.string.file_migration_failed_dir_already_exists);
 207
 208                         if (dstFile.getFreeSpace() < calculateUsedSpace(new File(srcFile, MainApp.getDataFolder())))
 209                                 throw new MigrationException(R.string.file_migration_failed_not_enough_space);
 210                 }
 211
 212                 void copyFiles() throws MigrationException {
 213                         File srcFile = new File(mStorageSource + File.separator + MainApp.getDataFolder());
 214                         File dstFile = new File(mStorageTarget + File.separator + MainApp.getDataFolder());
 215
 216                         copyDirs(srcFile, dstFile);
 217                         mProgress = Math.max(mProgress, mProgressCopyUpperBound);
 218                         publishProgress(mProgress);
 219                 }
 220
 221                 private boolean copyFile(File src, File target) {
 222                         boolean ret = true;
 223
 224                         InputStream in = null;
 225                         OutputStream out = null;
 226
 227                         try {
 228                                 in = new FileInputStream(src);
 229                                 out = new FileOutputStream(target);
 230                                 byte[] buf = new byte[1024];
 231                                 int len;
 232                                 while ((len = in.read(buf)) > 0) {
 233                                         out.write(buf, 0, len);
 234                                 }
 235                         } catch (IOException ex) {
 236                                 ret = false;
 237                         } finally {
 238                                 if (in != null) try {
 239                                         in.close();
 240                                 } catch (IOException e) {
 241                                         e.printStackTrace(System.err);
 242                                 }
 243                                 if (out != null) try {
 244                                         out.close();
 245                                 } catch (IOException e) {
 246                                         e.printStackTrace(System.err);
 247                                 }
 248                         }
 249
 250                         return ret;
 251                 }
 252
 253                 void copyDirs(File src, File dst) throws MigrationException {
 254                         if (!dst.mkdirs())
 255                                 throw new MigrationException(R.string.file_migration_failed_while_coping);
 256
 257                         for (File f : src.listFiles()) {
 258
 259                                 mProgress = Math.min(mProgress+1, mProgressCopyUpperBound);
 260                                 publishProgress(mProgress);
 261
 262                                 if (f.isDirectory())
 263                                         copyDirs(f, new File(dst, f.getName()));
 264                                 else if (!copyFile(f, new File(dst, f.getName())))
 265                                         throw new MigrationException(R.string.file_migration_failed_while_coping);
 266                         }
 267
 268                 }
 269
 270                 void updateIndex(Context context) throws MigrationException {
 271                         FileDataStorageManager manager = new FileDataStorageManager(null, context.getContentResolver());
 272
 273                         try {
 274                                 manager.migrateStoredFiles(mStorageSource, mStorageTarget);
 275                         } catch (Exception e) {
 276                                 throw new MigrationException(R.string.file_migration_failed_while_updating_index);
 277                         }
 278                 }
 279
 280                 void cleanup() throws MigrationCleanupException {
 281                         File srcFile = new File(mStorageSource + File.separator + MainApp.getDataFolder());
 282                         if (!srcFile.delete())
 283                                 throw new MigrationCleanupException();
 284                 }
 285
 286                 void rollback() {
 287                         File dstFile = new File(mStorageTarget + File.separator + MainApp.getDataFolder());
 288                         if (dstFile.exists())
 289                                 if (!dstFile.delete())
 290                                         Log_OC.w(TAG, "Rollback step failed");
 291                 }
 292
 293                 long calculateUsedSpace(File dir) {
 294                         long result = 0;
 295
 296                         for (File f : dir.listFiles()) {
 297                                 if (f.isDirectory())
 298                                         result += calculateUsedSpace(f);
 299                                 else
 300                                         result += f.length();
 301                         }
 302
 303                         return result;
 304                 }
 305
 306                 void saveAccountsSyncStatus(String authority, Account accounts[], boolean syncs[]) {
 307                         for (int i = 0; i < accounts.length; ++i)
 308                                 syncs[i] = ContentResolver.getSyncAutomatically(accounts[i], authority);
 309                 }
 310
 311                 void stopAccountsSyncing(String authority, Account accounts[]) {
 312                         for (int i = 0; i < accounts.length; ++i)
 313                                 ContentResolver.setSyncAutomatically(accounts[i], authority, false);
 314                 }
 315
 316                 void waitForUnfinishedSynchronizations(String authority, Account accounts[]) {
 317                         for (int i = 0; i < accounts.length; ++i)
 318                                 while (ContentResolver.isSyncActive(accounts[i], authority))
 319                                         try {
 320                                                 Thread.sleep(1000);
 321                                         } catch (InterruptedException e) {
 322                                                 Log_OC.w(TAG, "Thread interrupted while waiting for account to end syncing");
 323                                                 Thread.currentThread().interrupt();
 324                                         }
 325                 }
 326
 327                 void restoreAccountsSyncStatus(String authority, Account accounts[], boolean oldSync[]) {
 328                         for (int i = 0; i < accounts.length; ++i)
 329                                 ContentResolver.setSyncAutomatically(accounts[i], authority, oldSync[i]);
 330                 }
 331
 332         }
 333 }