blob: 80acd0a50a25750703545037326a3dbc274a0c5b [file] [log] [blame]
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.providers.calendar;
import android.app.ActivityManagerNative;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.os.RemoteException;
import android.util.EventLog;
import android.util.Log;
/**
* This will be launched during system boot, after the core system has
* been brought up but before any non-persistent processes have been
* started. It is launched in a special state, with no content provider
* or custom application class associated with the process running.
*
* It's job is to prime the calendar database. Either create it
* if it doesn't exist, or open it and force any necessary upgrades.
* All of this heavy lifting happens before the boot animation ends.
*/
public class CalendarUpgradeReceiver extends BroadcastReceiver {
static final String TAG = "CalendarUpgradeReceiver";
static final String PREF_DB_VERSION = "db_version";
@Override
public void onReceive(Context context, Intent intent) {
// We are now running with the system up, but no apps started,
// so can do whatever cleanup after an upgrade that we want.
try {
long startTime = System.currentTimeMillis();
// Lookup the last known database version
SharedPreferences prefs = context.getSharedPreferences(TAG, Context.MODE_PRIVATE);
int prefVersion = prefs.getInt(PREF_DB_VERSION, 0);
// If the version is old go ahead and attempt to create or upgrade the database.
if (prefVersion != CalendarDatabaseHelper.DATABASE_VERSION) {
// Store the current version so this receiver isn't run again until the database
// version number changes. This is intentionally done even before the upgrade path
// is attempted to be conservative. If the upgrade fails for some reason and we
// crash and burn we don't want to get into a loop doing so.
prefs.edit().putInt(PREF_DB_VERSION, CalendarDatabaseHelper.DATABASE_VERSION).commit();
// Ask for a reference to the database to force the helper to either
// create the database or open it up, performing any necessary upgrades
// in the process.
CalendarDatabaseHelper helper = CalendarDatabaseHelper.getInstance(context);
if (context.getDatabasePath(helper.getDatabaseName()).exists()) {
Log.i(TAG, "Creating or opening calendar database");
try {
ActivityManagerNative.getDefault().showBootMessage(
context.getText(R.string.upgrade_msg), true);
} catch (RemoteException e) {
}
helper.getWritableDatabase();
}
helper.close();
// Log the total time taken for the receiver to perform the operation
EventLogTags.writeCalendarUpgradeReceiver(System.currentTimeMillis() - startTime);
}
} catch (Throwable t) {
// Something has gone terribly wrong. Disable this receiver for good so we can't
// possibly end up in a reboot loop.
Log.wtf(TAG, "Error during upgrade attempt. Disabling receiver.", t);
context.getPackageManager().setComponentEnabledSetting(
new ComponentName(context, getClass()),
PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
}
}
}