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 import com.owncloud.android.utils.FileStorageUtils;
  41
  42 import java.io.File;
  43
  44 /**
  45  * Created by Bartosz Przybylski on 07.11.2015.
  46  */
  47 public class StorageMigrationActivity extends AppCompatActivity {
  48         private static final String TAG = StorageMigrationActivity.class.getName();
  49         public static final String KEY_MIGRATION_TARGET_DIR = "MIGRATION_TARGET";
  50         public static final String KEY_MIGRATION_SOURCE_DIR = "MIGRATION_SOURCE";
  51
  52         private ProgressBar mProgressBar;
  53         private Button mFinishButton;
  54         private TextView mFeedbackText;
  55
  56         @Override
  57         public void onCreate(Bundle savedInstanceState) {
  58                 super.onCreate(savedInstanceState);
  59
  60                 setContentView(R.layout.migration_layout);
  61                 mProgressBar = (ProgressBar)findViewById(R.id.migrationProgress);
  62                 mFinishButton = (Button)findViewById(R.id.finishButton);
  63                 mFeedbackText = (TextView)findViewById(R.id.migrationText);
  64
  65                 mProgressBar.setProgress(0);
  66                 mFinishButton.setVisibility(View.INVISIBLE);
  67                 mFeedbackText.setText(R.string.file_migration_preparing);
  68
  69                 mFinishButton.setOnClickListener(new View.OnClickListener() {
  70                         @Override
  71                         public void onClick(View view) {
  72                                 setResult(RESULT_CANCELED);
  73                                 finish();
  74                         }
  75                 });
  76
  77                 String source = getIntent().getStringExtra(KEY_MIGRATION_SOURCE_DIR);
  78                 String destination = getIntent().getStringExtra(KEY_MIGRATION_TARGET_DIR);
  79
  80                 if (source == null || destination == null) {
  81                         Log_OC.e(TAG, "source or destination is null");
  82                         finish();
  83                 }
  84
  85                 new FileMigrationTask().execute(source, destination);
  86         }
  87
  88         private class FileMigrationTask extends AsyncTask<String, Integer, Integer> {
  89
  90                 private String mStorageTarget;
  91                 private String mStorageSource;
  92                 private int mProgress;
  93
  94                 private static final int mProgressCopyUpperBound = 98;
  95
  96                 private class MigrationException extends Exception {
  97                         private int mResId;
  98                         /*
  99                          * @param resId resource identifier to use for displaying error
 100                          */
 101                         MigrationException(int resId) {
 102                                 super();
 103                                 this.mResId = resId;
 104                         }
 105
 106                         int getResId() { return mResId; }
 107                 }
 108
 109                 private class MigrationCleanupException extends Exception {
 110                         MigrationCleanupException() {}
 111                 }
 112
 113                 @Override
 114                 protected Integer doInBackground(String... args) {
 115
 116                         mStorageSource = args[0];
 117                         mStorageTarget = args[1];
 118                         mProgress = 0;
 119
 120                         publishProgress(mProgress++, R.string.file_migration_preparing);
 121
 122                         Context context = StorageMigrationActivity.this;
 123                         String ocAuthority = context.getString(R.string.authority);
 124
 125                         Account[] ocAccounts = AccountManager.get(context).getAccountsByType(MainApp.getAccountType());
 126                         boolean[] oldAutoSync = new boolean[ocAccounts.length];
 127
 128                         try {
 129                                 publishProgress(mProgress++, R.string.file_migration_checking_destination);
 130
 131                                 checkDestinationAvailability();
 132
 133                                 publishProgress(mProgress++, R.string.file_migration_saving_accounts_configuration);
 134                                 saveAccountsSyncStatus(ocAuthority, ocAccounts, oldAutoSync);
 135
 136                                 publishProgress(mProgress++, R.string.file_migration_waiting_for_unfinished_sync);
 137                                 stopAccountsSyncing(ocAuthority, ocAccounts);
 138                                 waitForUnfinishedSynchronizations(ocAuthority, ocAccounts);
 139
 140                                 publishProgress(mProgress++, R.string.file_migration_migrating);
 141                                 copyFiles();
 142
 143                                 publishProgress(mProgress++, R.string.file_migration_updating_index);
 144                                 updateIndex(context);
 145
 146                                 publishProgress(mProgress++, R.string.file_migration_cleaning);
 147                                 cleanup();
 148
 149                         } catch (MigrationException e) {
 150                                 rollback();
 151                                 return e.getResId();
 152                         } catch (MigrationCleanupException e) {
 153                                 Log_OC.w(TAG, "Migration cleanup step failed");
 154                                 return 0;
 155                         } finally {
 156                                 publishProgress(mProgress++, R.string.file_migration_restoring_accounts_configuration);
 157                                 restoreAccountsSyncStatus(ocAuthority, ocAccounts, oldAutoSync);
 158                         }
 159
 160                         publishProgress(mProgress++, R.string.file_migration_ok_finished);
 161
 162                         return 0;
 163                 }
 164
 165                 @Override
 166                 protected void onProgressUpdate(Integer... progress) {
 167                         mProgressBar.setProgress(progress[0]);
 168                         if (progress.length > 1)
 169                                 mFeedbackText.setText(progress[1]);
 170                 }
 171
 172                 @Override
 173                 protected void onPostExecute(Integer code) {
 174                         mFinishButton.setVisibility(View.VISIBLE);
 175                         if (code != 0) {
 176                                 mFeedbackText.setText(code);
 177                         } else {
 178                                 mFeedbackText.setText(R.string.file_migration_ok_finished);
 179                                 mFinishButton.setOnClickListener(new View.OnClickListener() {
 180                                         @Override
 181                                         public void onClick(View view) {
 182                                                 Intent resultIntent = new Intent();
 183                                                 resultIntent.putExtra(KEY_MIGRATION_TARGET_DIR, mStorageTarget);
 184                                                 setResult(RESULT_OK, resultIntent);
 185                                                 finish();
 186                                         }
 187                                 });
 188                         }
 189                 }
 190
 191                 void checkDestinationAvailability() throws MigrationException {
 192                         File srcFile = new File(mStorageSource);
 193                         File dstFile = new File(mStorageTarget);
 194
 195                         if (!dstFile.canRead() || !srcFile.canRead())
 196                                 throw new MigrationException(R.string.file_migration_failed_not_readable);
 197
 198                         if (!dstFile.canWrite() || !srcFile.canWrite())
 199                                 throw new MigrationException(R.string.file_migration_failed_not_writable);
 200
 201                         if (new File(dstFile, MainApp.getDataFolder()).exists())
 202                                 throw new MigrationException(R.string.file_migration_failed_dir_already_exists);
 203
 204                         if (dstFile.getFreeSpace() < FileStorageUtils.getFolderSize(new File(srcFile, MainApp.getDataFolder())))
 205                                 throw new MigrationException(R.string.file_migration_failed_not_enough_space);
 206                 }
 207
 208                 void copyFiles() throws MigrationException {
 209                         File srcFile = new File(mStorageSource + File.separator + MainApp.getDataFolder());
 210                         File dstFile = new File(mStorageTarget + File.separator + MainApp.getDataFolder());
 211
 212                         copyDirs(srcFile, dstFile);
 213                         mProgress = Math.max(mProgress, mProgressCopyUpperBound);
 214                         publishProgress(mProgress);
 215                 }
 216
 217                 void copyDirs(File src, File dst) throws MigrationException {
 218                         if (!dst.mkdirs())
 219                                 throw new MigrationException(R.string.file_migration_failed_while_coping);
 220
 221                         for (File f : src.listFiles()) {
 222
 223                                 mProgress = Math.min(mProgress+1, mProgressCopyUpperBound);
 224                                 publishProgress(mProgress);
 225
 226                                 if (f.isDirectory())
 227                                         copyDirs(f, new File(dst, f.getName()));
 228                                 else if (!FileStorageUtils.copyFile(f, new File(dst, f.getName())))
 229                                         throw new MigrationException(R.string.file_migration_failed_while_coping);
 230                         }
 231
 232                 }
 233
 234                 void updateIndex(Context context) throws MigrationException {
 235                         FileDataStorageManager manager = new FileDataStorageManager(null, context.getContentResolver());
 236
 237                         try {
 238                                 manager.migrateStoredFiles(mStorageSource, mStorageTarget);
 239                         } catch (Exception e) {
 240                                 throw new MigrationException(R.string.file_migration_failed_while_updating_index);
 241                         }
 242                 }
 243
 244                 void cleanup() throws MigrationCleanupException {
 245                         File srcFile = new File(mStorageSource + File.separator + MainApp.getDataFolder());
 246                         if (!srcFile.delete())
 247                                 throw new MigrationCleanupException();
 248                 }
 249
 250                 void rollback() {
 251                         File dstFile = new File(mStorageTarget + File.separator + MainApp.getDataFolder());
 252                         if (dstFile.exists())
 253                                 if (!dstFile.delete())
 254                                         Log_OC.w(TAG, "Rollback step failed");
 255                 }
 256
 257                 void saveAccountsSyncStatus(String authority, Account accounts[], boolean syncs[]) {
 258                         for (int i = 0; i < accounts.length; ++i)
 259                                 syncs[i] = ContentResolver.getSyncAutomatically(accounts[i], authority);
 260                 }
 261
 262                 void stopAccountsSyncing(String authority, Account accounts[]) {
 263                         for (int i = 0; i < accounts.length; ++i)
 264                                 ContentResolver.setSyncAutomatically(accounts[i], authority, false);
 265                 }
 266
 267                 void waitForUnfinishedSynchronizations(String authority, Account accounts[]) {
 268                         for (int i = 0; i < accounts.length; ++i)
 269                                 while (ContentResolver.isSyncActive(accounts[i], authority))
 270                                         try {
 271                                                 Thread.sleep(1000);
 272                                         } catch (InterruptedException e) {
 273                                                 Log_OC.w(TAG, "Thread interrupted while waiting for account to end syncing");
 274                                                 Thread.currentThread().interrupt();
 275                                         }
 276                 }
 277
 278                 void restoreAccountsSyncStatus(String authority, Account accounts[], boolean oldSync[]) {
 279                         for (int i = 0; i < accounts.length; ++i)
 280                                 ContentResolver.setSyncAutomatically(accounts[i], authority, oldSync[i]);
 281                 }
 282
 283         }
 284 }