am ab4748c6: Merge change 5694 into donut (01ecd7bc) · Commits · e / os / android_frameworks_base

cmds/bmgr/src/com/android/commands/bmgr/Bmgr.java

+55 −0

Original line number	Diff line number	Diff line
		@@ -62,6 +62,16 @@ public final class Bmgr {
		String op = args[0];
		mNextArg = 1;

		if ("enabled".equals(op)) {
		doEnabled();
		return;
		}

		if ("enable".equals(op)) {
		doEnable();
		return;
		}

		if ("run".equals(op)) {
		doRun();
		return;
		@@ -91,6 +101,41 @@ public final class Bmgr {
		showUsage();
		}

		private String enableToString(boolean enabled) {
		return enabled ? "enabled" : "disabled";
		}

		private void doEnabled() {
		try {
		boolean isEnabled = mBmgr.isBackupEnabled();
		System.out.println("Backup Manager currently "
		+ enableToString(isEnabled));
		} catch (RemoteException e) {
		System.err.println(e.toString());
		System.err.println(BMGR_NOT_RUNNING_ERR);
		}
		}

		private void doEnable() {
		String arg = nextArg();
		if (arg == null) {
		showUsage();
		return;
		}

		try {
		boolean enable = Boolean.parseBoolean(arg);
		mBmgr.setBackupEnabled(enable);
		System.out.println("Backup Manager now " + enableToString(enable));
		} catch (NumberFormatException e) {
		showUsage();
		return;
		} catch (RemoteException e) {
		System.err.println(e.toString());
		System.err.println(BMGR_NOT_RUNNING_ERR);
		}
		}

		private void doRun() {
		try {
		mBmgr.backupNow();
		@@ -291,6 +336,8 @@ public final class Bmgr {
		private static void showUsage() {
		System.err.println("usage: bmgr [backup\|restore\|list\|transport\|run]");
		System.err.println(" bmgr backup PACKAGE");
		System.err.println(" bmgr enable BOOL");
		System.err.println(" bmgr enabled");
		System.err.println(" bmgr list transports");
		System.err.println(" bmgr list sets");
		System.err.println(" bmgr transport WHICH");
		@@ -301,6 +348,14 @@ public final class Bmgr {
		System.err.println("Note that the backup pass will effectively be a no-op if the package");
		System.err.println("does not actually have changed data to store.");
		System.err.println("");
		System.err.println("The 'enable' command enables or disables the entire backup mechanism.");
		System.err.println("If the argument is 'true' it will be enabled, otherwise it will be");
		System.err.println("disabled. When disabled, neither backup or restore operations will");
		System.err.println("be performed.");
		System.err.println("");
		System.err.println("The 'enabled' command reports the current enabled/disabled state of");
		System.err.println("the backup mechanism.");
		System.err.println("");
		System.err.println("The 'list transports' command reports the names of the backup transports");
		System.err.println("currently available on the device. These names can be passed as arguments");
		System.err.println("to the 'transport' command. The currently selected transport is indicated");

core/java/android/backup/IBackupManager.aidl

+18 −0

Original line number	Diff line number	Diff line
		@@ -47,6 +47,24 @@ interface IBackupManager {
		*/
		void agentDisconnected(String packageName);

		/**
		* Enable/disable the backup service entirely. When disabled, no backup
		* or restore operations will take place. Data-changed notifications will
		* still be observed and collected, however, so that changes made while the
		* mechanism was disabled will still be backed up properly if it is enabled
		* at some point in the future.
		*
		* <p>Callers must hold the android.permission.BACKUP permission to use this method.
		*/
		void setBackupEnabled(boolean isEnabled);

		/**
		* Report whether the backup mechanism is currently enabled.
		*
		* <p>Callers must hold the android.permission.BACKUP permission to use this method.
		*/
		boolean isBackupEnabled();

		/**
		* Schedule an immediate backup attempt for all pending updates. This is
		* primarily intended for transports to use when they detect a suitable

services/java/com/android/server/BackupManagerService.java

+54 −14

Original line number	Diff line number	Diff line
		@@ -74,6 +74,10 @@ class BackupManagerService extends IBackupManager.Stub {
		private static final String TAG = "BackupManagerService";
		private static final boolean DEBUG = true;

		// Persistent properties
		private static final String BACKUP_TRANSPORT_PROPERTY = "persist.service.bkup.trans";
		private static final String BACKUP_ENABLED_PROPERTY = "persist.service.bkup.enabled";

		// Default time to wait after data changes before we back up the data
		private static final long COLLECTION_INTERVAL = 3 * 60 * 1000;

		@@ -86,10 +90,11 @@ class BackupManagerService extends IBackupManager.Stub {

		private Context mContext;
		private PackageManager mPackageManager;
		private final IActivityManager mActivityManager;
		private IActivityManager mActivityManager;
		private boolean mEnabled; // access to this is synchronized on 'this'
		private final BackupHandler mBackupHandler = new BackupHandler();
		// map UIDs to the set of backup client services within that UID's app set
		private SparseArray<HashSet<ApplicationInfo>> mBackupParticipants
		private final SparseArray<HashSet<ApplicationInfo>> mBackupParticipants
		= new SparseArray<HashSet<ApplicationInfo>>();
		// set of backup services that have pending changes
		private class BackupRequest {
		@@ -128,7 +133,6 @@ class BackupManagerService extends IBackupManager.Stub {
		private volatile boolean mClearingData;

		// Transport bookkeeping
		static private final String BACKUP_TRANSPORT_PROPERTY = "persist.service.bkup.trans";
		private final HashMap<String,IBackupTransport> mTransports
		= new HashMap<String,IBackupTransport>();
		private String mCurrentTransport;
		@@ -160,6 +164,9 @@ class BackupManagerService extends IBackupManager.Stub {
		mActivityManager = ActivityManagerNative.getDefault();

		// Set up our bookkeeping
		// !!! STOPSHIP: make this disabled by default so that we then gate on
		// setupwizard or other opt-out UI
		mEnabled = SystemProperties.getBoolean(BACKUP_ENABLED_PROPERTY, true);
		mBaseStateDir = new File(Environment.getDataDirectory(), "backup");
		mDataDir = Environment.getDownloadCacheDirectory();

		@@ -489,8 +496,15 @@ class BackupManagerService extends IBackupManager.Stub {

		// The queue lock should be held when scheduling a backup pass
		private void scheduleBackupPassLocked(long timeFromNowMillis) {
		// We only schedule backups when we're actually enabled
		synchronized (this) {
		if (mEnabled) {
		mBackupHandler.removeMessages(MSG_RUN_BACKUP);
		mBackupHandler.sendEmptyMessageDelayed(MSG_RUN_BACKUP, timeFromNowMillis);
		} else if (DEBUG) {
		Log.v(TAG, "Disabled, so not scheduling backup pass");
		}
		}
		}

		// Return the given transport
		@@ -1087,7 +1101,7 @@ class BackupManagerService extends IBackupManager.Stub {

		if (DEBUG) {
		int numKeys = mPendingBackups.size();
		Log.d(TAG, "Scheduling backup for " + numKeys + " participants:");
		Log.d(TAG, "Now awaiting backup for " + numKeys + " participants:");
		for (BackupRequest b : mPendingBackups.values()) {
		Log.d(TAG, " + " + b + " agent=" + b.appInfo.backupAgentName);
		}
		@@ -1117,7 +1131,7 @@ class BackupManagerService extends IBackupManager.Stub {
		// Run a backup pass immediately for any applications that have declared
		// that they have pending updates.
		public void backupNow() throws RemoteException {
		mContext.enforceCallingPermission("android.permission.BACKUP", "tryBackupNow");
		mContext.enforceCallingPermission("android.permission.BACKUP", "backupNow");

		if (DEBUG) Log.v(TAG, "Scheduling immediate backup pass");
		synchronized (mQueueLock) {
		@@ -1125,16 +1139,43 @@ class BackupManagerService extends IBackupManager.Stub {
		}
		}

		// Enable/disable the backup transport
		public void setBackupEnabled(boolean enable) {
		mContext.enforceCallingPermission("android.permission.BACKUP", "setBackupEnabled");

		boolean wasEnabled = mEnabled;
		synchronized (this) {
		SystemProperties.set(BACKUP_ENABLED_PROPERTY, enable ? "true" : "false");
		mEnabled = enable;
		}

		if (enable && !wasEnabled) {
		synchronized (mQueueLock) {
		if (mPendingBackups.size() > 0) {
		// !!! TODO: better policy around timing of the first backup pass
		if (DEBUG) Log.v(TAG, "Backup enabled with pending data changes, scheduling");
		this.scheduleBackupPassLocked(COLLECTION_INTERVAL);
		}
		}
		}
		}

		// Report whether the backup mechanism is currently enabled
		public boolean isBackupEnabled() {
		mContext.enforceCallingPermission("android.permission.BACKUP", "isBackupEnabled");
		return mEnabled; // no need to synchronize just to read it
		}

		// Report the name of the currently active transport
		public String getCurrentTransport() {
		mContext.enforceCallingPermission("android.permission.BACKUP", "selectBackupTransport");
		mContext.enforceCallingPermission("android.permission.BACKUP", "getCurrentTransport");
		Log.v(TAG, "getCurrentTransport() returning " + mCurrentTransport);
		return mCurrentTransport;
		}

		// Report all known, available backup transports
		public String[] listAllTransports() {
		mContext.enforceCallingPermission("android.permission.BACKUP", "selectBackupTransport");
		mContext.enforceCallingPermission("android.permission.BACKUP", "listAllTransports");

		String[] list = null;
		ArrayList<String> known = new ArrayList<String>();
		@@ -1292,7 +1333,8 @@ class BackupManagerService extends IBackupManager.Stub {
		synchronized (mQueueLock) {
		pw.println("Available transports:");
		for (String t : listAllTransports()) {
		pw.println(" " + t);
		String pad = (t.equals(mCurrentTransport)) ? " * " : " ";
		pw.println(pad + t);
		}
		int N = mBackupParticipants.size();
		pw.println("Participants:");
		@@ -1302,14 +1344,12 @@ class BackupManagerService extends IBackupManager.Stub {
		pw.println(uid);
		HashSet<ApplicationInfo> participants = mBackupParticipants.valueAt(i);
		for (ApplicationInfo app: participants) {
		pw.print(" ");
		pw.println(app.toString());
		pw.println(" " + app.toString());
		}
		}
		pw.println("Pending: " + mPendingBackups.size());
		for (BackupRequest req : mPendingBackups.values()) {
		pw.print(" ");
		pw.println(req);
		pw.println(" " + req);
		}
		}
		}