1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.test.wakeuploop;
18
19import android.app.AlarmManager;
20import android.app.PendingIntent;
21import android.app.Service;
22import android.content.Context;
23import android.content.Intent;
24import android.os.Environment;
25import android.os.Handler;
26import android.os.IBinder;
27import android.os.Message;
28import android.os.Messenger;
29import android.os.SystemClock;
30import android.util.Log;
31
32import java.io.File;
33
34public class WakeLoopService extends Service {
35
36    private static final String LOG_TAG = WakeLoopService.class.getSimpleName();
37    static final String WAKEUP_INTERNAL = "WAKEUP_INTERVAL";
38    static final String MAX_LOOP = "MAX_LOOP";
39    static final String STOP_CALLBACK = "STOP_CALLBACK";
40    static final String THIS_LOOP = "THIS_LOOP";
41    static final int MSG_STOP_SERVICE = 0xd1ed1e;
42
43    private final Handler mHandler = new Handler() {
44        public void handleMessage(Message msg) {
45            if (msg.what == MSG_STOP_SERVICE) {
46                stopSelf();
47            } else {
48                super.handleMessage(msg);
49            }
50        };
51    };
52
53    @Override
54    public IBinder onBind(Intent intent) {
55        // no binding, just start via intent
56        return null;
57    }
58
59    @Override
60    public int onStartCommand(Intent intent, int flags, int startId) {
61        // get wakeup interval from intent
62        long wakeupInterval = intent.getLongExtra(WAKEUP_INTERNAL, 0);
63        long maxLoop = intent.getLongExtra(MAX_LOOP, 0);
64
65        if (wakeupInterval == 0) {
66            // stop and error
67            Log.e(LOG_TAG, "No wakeup interval specified, not starting the service");
68            stopSelf();
69            return START_NOT_STICKY;
70        }
71        FileUtil.get().writeDateToFile(new File(Environment.getExternalStorageDirectory(),
72                "wakeup-loop-start.txt"));
73        Log.d(LOG_TAG, String.format("WakeLoop: STARTED interval = %d, total loop = %d",
74                wakeupInterval, maxLoop));
75        // calculate when device should be waken up
76        long atTime = SystemClock.elapsedRealtime() + wakeupInterval;
77        AlarmManager am = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
78        Intent wakupIntent = new Intent(WakeUpCall.WAKEUP_CALL)
79            .putExtra(WAKEUP_INTERNAL, wakeupInterval)
80            .putExtra(MAX_LOOP, maxLoop)
81            .putExtra(THIS_LOOP, 0L)
82            .putExtra(STOP_CALLBACK, new Messenger(mHandler));
83        PendingIntent pi = PendingIntent.getBroadcast(this, 0, wakupIntent,
84                PendingIntent.FLAG_UPDATE_CURRENT);
85        // set alarm, which will be delivered in form of the wakeupIntent
86        am.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, atTime, pi);
87        return START_NOT_STICKY;
88    }
89
90    @Override
91    public void onDestroy() {
92        Log.d(LOG_TAG, "WakeLoop: STOPPED");
93        // cancel alarms first
94        Intent intent = new Intent(WakeUpCall.WAKEUP_CALL)
95            .putExtra(WakeUpCall.CANCEL, "true");
96        sendBroadcast(intent);
97    }
98}
99