-/* ownCloud Android client application
- * Copyright (C) 2012 Bartek Przybylski
- * Copyright (C) 2012-2013 ownCloud Inc.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-package com.owncloud.android.files.services;
-
-import java.io.File;
-import java.util.HashMap;
-import java.util.Map;
-
-import com.owncloud.android.Log_OC;
-import com.owncloud.android.datamodel.FileDataStorageManager;
-import com.owncloud.android.datamodel.OCFile;
-import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
-import com.owncloud.android.files.OwnCloudFileObserver;
-import com.owncloud.android.operations.SynchronizeFileOperation;
-import com.owncloud.android.utils.FileStorageUtils;
-
-import android.accounts.Account;
-import android.accounts.AccountManager;
-import android.app.Service;
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.database.Cursor;
-import android.os.Binder;
-import android.os.IBinder;
-
-public class FileObserverService extends Service {
-
- public final static int CMD_INIT_OBSERVED_LIST = 1;
- public final static int CMD_ADD_OBSERVED_FILE = 2;
- public final static int CMD_DEL_OBSERVED_FILE = 3;
-
- public final static String KEY_FILE_CMD = "KEY_FILE_CMD";
- public final static String KEY_CMD_ARG_FILE = "KEY_CMD_ARG_FILE";
- public final static String KEY_CMD_ARG_ACCOUNT = "KEY_CMD_ARG_ACCOUNT";
-
- private static String TAG = FileObserverService.class.getSimpleName();
-
- private static Map<String, OwnCloudFileObserver> mObserversMap;
- private static DownloadCompletedReceiverBis mDownloadReceiver;
- private IBinder mBinder = new LocalBinder();
-
- private String mDownloadAddedMessage;
- private String mDownloadFinishMessage;
-
- public class LocalBinder extends Binder {
- FileObserverService getService() {
- return FileObserverService.this;
- }
- }
-
- @Override
- public void onCreate() {
- super.onCreate();
- mDownloadReceiver = new DownloadCompletedReceiverBis();
-
- FileDownloader downloader = new FileDownloader();
- mDownloadAddedMessage = downloader.getDownloadAddedMessage();
- mDownloadFinishMessage= downloader.getDownloadFinishMessage();
-
- IntentFilter filter = new IntentFilter();
- filter.addAction(mDownloadAddedMessage);
- filter.addAction(mDownloadFinishMessage);
- registerReceiver(mDownloadReceiver, filter);
-
- mObserversMap = new HashMap<String, OwnCloudFileObserver>();
- //initializeObservedList();
- }
-
-
- @Override
- public void onDestroy() {
- super.onDestroy();
- unregisterReceiver(mDownloadReceiver);
- mObserversMap = null; // TODO study carefully the life cycle of Services to grant the best possible observance
- Log_OC.d(TAG, "Bye, bye");
- }
-
-
- @Override
- public IBinder onBind(Intent intent) {
- return mBinder;
- }
-
- @Override
- public int onStartCommand(Intent intent, int flags, int startId) {
- // this occurs when system tries to restart
- // service, so we need to reinitialize observers
- if (intent == null) {
- initializeObservedList();
- return Service.START_STICKY;
- }
-
- if (!intent.hasExtra(KEY_FILE_CMD)) {
- Log_OC.e(TAG, "No KEY_FILE_CMD argument given");
- return Service.START_STICKY;
- }
-
- switch (intent.getIntExtra(KEY_FILE_CMD, -1)) {
- case CMD_INIT_OBSERVED_LIST:
- initializeObservedList();
- break;
- case CMD_ADD_OBSERVED_FILE:
- addObservedFile( (OCFile)intent.getParcelableExtra(KEY_CMD_ARG_FILE),
- (Account)intent.getParcelableExtra(KEY_CMD_ARG_ACCOUNT));
- break;
- case CMD_DEL_OBSERVED_FILE:
- removeObservedFile( (OCFile)intent.getParcelableExtra(KEY_CMD_ARG_FILE),
- (Account)intent.getParcelableExtra(KEY_CMD_ARG_ACCOUNT));
- break;
- default:
- Log_OC.wtf(TAG, "Incorrect key given");
- }
-
- return Service.START_STICKY;
- }
-
-
- /**
- * Read from the local database the list of files that must to be kept synchronized and
- * starts file observers to monitor local changes on them
- */
- private void initializeObservedList() {
- mObserversMap.clear();
- Cursor c = getContentResolver().query(
- ProviderTableMeta.CONTENT_URI,
- null,
- ProviderTableMeta.FILE_KEEP_IN_SYNC + " = ?",
- new String[] {String.valueOf(1)},
- null);
- if (c == null || !c.moveToFirst()) return;
- AccountManager acm = AccountManager.get(this);
- Account[] accounts = acm.getAccounts();
- do {
- Account account = null;
- for (Account a : accounts)
- if (a.name.equals(c.getString(c.getColumnIndex(ProviderTableMeta.FILE_ACCOUNT_OWNER)))) {
- account = a;
- break;
- }
-
- if (account == null) continue;
- FileDataStorageManager storage =
- new FileDataStorageManager(account, getContentResolver());
- if (!storage.fileExists(c.getString(c.getColumnIndex(ProviderTableMeta.FILE_PATH))))
- continue;
-
- String path = c.getString(c.getColumnIndex(ProviderTableMeta.FILE_STORAGE_PATH));
- if (path == null || path.length() <= 0)
- continue;
- OwnCloudFileObserver observer =
- new OwnCloudFileObserver( path,
- account,
- getApplicationContext(),
- OwnCloudFileObserver.CHANGES_ONLY);
- mObserversMap.put(path, observer);
- if (new File(path).exists()) {
- observer.startWatching();
- Log_OC.d(TAG, "Started watching file " + path);
- }
-
- } while (c.moveToNext());
- c.close();
- }
-
-
- /**
- * Registers the local copy of a remote file to be observed for local changes,
- * an automatically updated in the ownCloud server.
- *
- * This method does NOT perform a {@link SynchronizeFileOperation} over the file.
- *
- * TODO We are ignoring that, currently, a local file can be linked to different files
- * in ownCloud if it's uploaded several times. That's something pending to update: we
- * will avoid that the same local file is linked to different remote files.
- *
- * @param file Object representing a remote file which local copy must be observed.
- * @param account OwnCloud account containing file.
- */
- private void addObservedFile(OCFile file, Account account) {
- if (file == null) {
- Log_OC.e(TAG, "Trying to add a NULL file to observer");
- return;
- }
- String localPath = file.getStoragePath();
- if (localPath == null || localPath.length() <= 0) { // file downloading / to be download for the first time
- localPath = FileStorageUtils.getDefaultSavePathFor(account.name, file);
- }
- OwnCloudFileObserver observer = mObserversMap.get(localPath);
- if (observer == null) {
- /// the local file was never registered to observe before
- observer = new OwnCloudFileObserver( localPath,
- account,
- getApplicationContext(),
- OwnCloudFileObserver.CHANGES_ONLY);
- mObserversMap.put(localPath, observer);
- Log_OC.d(TAG, "Observer added for path " + localPath);
-
- if (file.isDown()) {
- observer.startWatching();
- Log_OC.d(TAG, "Started watching " + localPath);
- } // else - the observance can't be started on a file not already down; mDownloadReceiver will get noticed when the download of the file finishes
- }
-
- }
-
-
- /**
- * Unregisters the local copy of a remote file to be observed for local changes.
- *
- * Starts to watch it, if the file has a local copy to watch.
- *
- * TODO We are ignoring that, currently, a local file can be linked to different files
- * in ownCloud if it's uploaded several times. That's something pending to update: we
- * will avoid that the same local file is linked to different remote files.
- *
- * @param file Object representing a remote file which local copy must be not observed longer.
- * @param account OwnCloud account containing file.
- */
- private void removeObservedFile(OCFile file, Account account) {
- if (file == null) {
- Log_OC.e(TAG, "Trying to remove a NULL file");
- return;
- }
- String localPath = file.getStoragePath();
- if (localPath == null || localPath.length() <= 0) {
- localPath = FileStorageUtils.getDefaultSavePathFor(account.name, file);
- }
-
- OwnCloudFileObserver observer = mObserversMap.get(localPath);
- if (observer != null) {
- observer.stopWatching();
- mObserversMap.remove(observer);
- Log_OC.d(TAG, "Stopped watching " + localPath);
- }
-
- }
-
-
- /**
- * Private receiver listening to events broadcast by the FileDownloader service.
- *
- * Starts and stops the observance on registered files when they are being download,
- * in order to avoid to start unnecessary synchronizations.
- */
- private class DownloadCompletedReceiverBis extends BroadcastReceiver {
-
- @Override
- public void onReceive(Context context, Intent intent) {
- String downloadPath = intent.getStringExtra(FileDownloader.EXTRA_FILE_PATH);
- OwnCloudFileObserver observer = mObserversMap.get(downloadPath);
- if (observer != null) {
- if (intent.getAction().equals(mDownloadFinishMessage) &&
- new File(downloadPath).exists()) { // the download could be successful. not; in both cases, the file could be down, due to a former download or upload
- observer.startWatching();
- Log_OC.d(TAG, "Watching again " + downloadPath);
-
- } else if (intent.getAction().equals(mDownloadAddedMessage)) {
- observer.stopWatching();
- Log_OC.d(TAG, "Disabling observance of " + downloadPath);
- }
- }
- }
-
- }
-
-}
projects / pub / Android / ownCloud.git / blobdiff