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@@ -0,0 +1,204 @@
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+package com.owncloud.android.files.services;
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+
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+import java.util.ArrayList;
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+import java.util.List;
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+
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+import com.owncloud.android.AccountUtils;
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+import com.owncloud.android.datamodel.FileDataStorageManager;
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+import com.owncloud.android.db.ProviderMeta.ProviderTableMeta;
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+import com.owncloud.android.files.OwnCloudFileObserver;
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+
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+import android.accounts.Account;
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+import android.accounts.AccountManager;
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+import android.app.Service;
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+import android.content.BroadcastReceiver;
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+import android.content.Context;
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+import android.content.Intent;
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+import android.content.IntentFilter;
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+import android.database.Cursor;
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+import android.os.Binder;
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+import android.os.IBinder;
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+import android.util.Log;
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+
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+public class FileObserverService extends Service {
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+
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+ public final static String KEY_FILE_CMD = "KEY_FILE_CMD";
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+ public final static String KEY_CMD_ARG = "KEY_CMD_ARG";
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+
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+ public final static int CMD_INIT_OBSERVED_LIST = 1;
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+ public final static int CMD_ADD_OBSERVED_FILE = 2;
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+ public final static int CMD_DEL_OBSERVED_FILE = 3;
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+
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+ private static String TAG = "FileObserverService";
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+ private static List<OwnCloudFileObserver> mObservers;
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+ private static List<DownloadCompletedReceiver> mDownloadReceivers;
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+ private static Object mReceiverListLock = new Object();
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+ private IBinder mBinder = new LocalBinder();
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+
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+ public class LocalBinder extends Binder {
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+ FileObserverService getService() {
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+ return FileObserverService.this;
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+ }
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+ }
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+
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+ @Override
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+ public IBinder onBind(Intent intent) {
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+ return mBinder;
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+ }
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+
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+ @Override
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+ public int onStartCommand(Intent intent, int flags, int startId) {
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+ if (!intent.hasExtra(KEY_FILE_CMD)) {
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+ Log.e(TAG, "No KEY_FILE_CMD argument given");
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+ return Service.START_STICKY;
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+ }
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+
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+ switch (intent.getIntExtra(KEY_FILE_CMD, -1)) {
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+ case CMD_INIT_OBSERVED_LIST:
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+ initializeObservedList();
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+ break;
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+ case CMD_ADD_OBSERVED_FILE:
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+ addObservedFile(intent.getStringExtra(KEY_CMD_ARG));
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+ break;
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+ case CMD_DEL_OBSERVED_FILE:
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+ removeObservedFile(intent.getStringExtra(KEY_CMD_ARG));
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+ break;
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+ default:
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+ Log.wtf(TAG, "Incorrect key given");
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+ }
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+
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+ return Service.START_STICKY;
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+ }
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+
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+ private void initializeObservedList() {
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+ if (mObservers != null) return; // nothing to do here
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+ mObservers = new ArrayList<OwnCloudFileObserver>();
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+ mDownloadReceivers = new ArrayList<DownloadCompletedReceiver>();
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+ Cursor c = getContentResolver().query(
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+ ProviderTableMeta.CONTENT_URI,
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+ null,
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+ ProviderTableMeta.FILE_KEEP_IN_SYNC + " = ?",
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+ new String[] {String.valueOf(1)},
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+ null);
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+ if (!c.moveToFirst()) return;
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+ AccountManager acm = AccountManager.get(this);
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+ Account[] accounts = acm.getAccounts();
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+ do {
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+ Account account = null;
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+ for (Account a : accounts)
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+ if (a.name.equals(c.getString(c.getColumnIndex(ProviderTableMeta.FILE_ACCOUNT_OWNER)))) {
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+ account = a;
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+ break;
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+ }
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+
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+ if (account == null) continue;
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+ FileDataStorageManager storage =
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+ new FileDataStorageManager(account, getContentResolver());
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+ if (!storage.fileExists(c.getString(c.getColumnIndex(ProviderTableMeta.FILE_PATH))))
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+ continue;
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+
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+ String path = c.getString(c.getColumnIndex(ProviderTableMeta.FILE_STORAGE_PATH));
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+ OwnCloudFileObserver observer =
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+ new OwnCloudFileObserver(path, OwnCloudFileObserver.CHANGES_ONLY);
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+ observer.setContext(getBaseContext());
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+ observer.setAccount(account);
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+ observer.setStorageManager(storage);
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+ observer.setOCFile(storage.getFileByPath(c.getString(c.getColumnIndex(ProviderTableMeta.FILE_PATH))));
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+ observer.startWatching();
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+ mObservers.add(observer);
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+ Log.d(TAG, "Started watching file " + path);
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+
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+ } while (c.moveToNext());
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+ c.close();
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+ }
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+
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+ private void addObservedFile(String path) {
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+ if (path == null) return;
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+ if (mObservers == null) {
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+ // this is very rare case when service was killed by system
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+ // and observers list was deleted in that procedure
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+ initializeObservedList();
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+ }
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+ boolean duplicate = false;
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+ OwnCloudFileObserver observer = null;
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+ for (int i = 0; i < mObservers.size(); ++i) {
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+ observer = mObservers.get(i);
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+ if (observer.getPath().equals(path))
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+ duplicate = true;
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+ observer.setContext(getBaseContext());
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+ }
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+ if (duplicate) return;
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+ observer = new OwnCloudFileObserver(path, OwnCloudFileObserver.CHANGES_ONLY);
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+ observer.setContext(getBaseContext());
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+ Account account = AccountUtils.getCurrentOwnCloudAccount(getBaseContext());
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+ observer.setAccount(account);
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+ FileDataStorageManager storage =
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+ new FileDataStorageManager(account, getContentResolver());
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+ observer.setStorageManager(storage);
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+ observer.setOCFile(storage.getFileByLocalPath(path));
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+
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+ DownloadCompletedReceiver receiver = new DownloadCompletedReceiver(path, observer);
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+ registerReceiver(receiver, new IntentFilter(FileDownloader.DOWNLOAD_FINISH_MESSAGE));
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+
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+ mObservers.add(observer);
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+ Log.d(TAG, "Observer added for path " + path);
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+ }
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+
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+ private void removeObservedFile(String path) {
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+ if (path == null) return;
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+ if (mObservers == null) {
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+ initializeObservedList();
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+ return;
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+ }
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+ for (int i = 0; i < mObservers.size(); ++i) {
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+ OwnCloudFileObserver observer = mObservers.get(i);
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+ if (observer.getPath().equals(path)) {
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+ observer.stopWatching();
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+ mObservers.remove(i);
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+ break;
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+ }
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+ }
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+ Log.d(TAG, "Stopped watching " + path);
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+ }
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+
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+ private static void addReceiverToList(DownloadCompletedReceiver r) {
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+ synchronized(mReceiverListLock) {
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+ mDownloadReceivers.add(r);
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+ }
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+ }
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+
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+ private static void removeReceiverFromList(DownloadCompletedReceiver r) {
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+ synchronized(mReceiverListLock) {
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+ mDownloadReceivers.remove(r);
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+ }
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+ }
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+
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+ private class DownloadCompletedReceiver extends BroadcastReceiver {
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+ String mPath;
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+ OwnCloudFileObserver mObserver;
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+
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+ public DownloadCompletedReceiver(String path, OwnCloudFileObserver observer) {
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+ mPath = path;
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+ mObserver = observer;
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+ addReceiverToList(this);
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+ }
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+
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+ @Override
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+ public void onReceive(Context context, Intent intent) {
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+ if (mPath.equals(intent.getStringExtra(FileDownloader.EXTRA_FILE_PATH))) {
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+ context.unregisterReceiver(this);
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+ removeReceiverFromList(this);
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+ mObserver.startWatching();
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+ Log.d(TAG, "Started watching " + mPath);
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+ return;
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+ }
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+ }
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+
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+ @Override
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+ public boolean equals(Object o) {
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+ if (o instanceof DownloadCompletedReceiver)
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+ return mPath.equals(((DownloadCompletedReceiver)o).mPath);
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+ return super.equals(o);
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+ }
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+ }
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+}
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Bartek Przybylski