1 /*
2  * Copyright (C) 2017 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 
17 package com.android.server.cts.device.statsd;
18 
19 import android.app.Notification;
20 import android.app.NotificationChannel;
21 import android.app.NotificationManager;
22 import android.app.Service;
23 import android.content.Context;
24 import android.content.Intent;
25 import android.os.Build;
26 import android.os.Handler;
27 import android.os.HandlerThread;
28 import android.os.IBinder;
29 import android.os.Looper;
30 import android.os.Message;
31 import android.os.Process;
32 import android.util.Log;
33 
34 import com.android.compatibility.common.util.ApiLevelUtil;
35 
36 public class StatsdCtsForegroundService extends Service {
37     private static final String TAG = "SimpleForegroundService";
38     private static final String NOTIFICATION_CHANNEL_ID = "Foreground Service";
39 
40     // TODO: pass this in from host side.
41     public static final int SLEEP_OF_FOREGROUND_SERVICE = 2_000;
42 
43     private Looper mServiceLooper;
44     private ServiceHandler mServiceHandler;
45     private boolean mChannelCreated;
46 
47     private final class ServiceHandler extends Handler {
ServiceHandler(Looper looper)48         public ServiceHandler(Looper looper) {
49             super(looper);
50         }
51 
52         @Override
handleMessage(Message msg)53         public void handleMessage(Message msg) {
54             Log.i(TAG, "Handling message.");
55             // Sleep.
56             try {
57                 Thread.sleep(SLEEP_OF_FOREGROUND_SERVICE);
58             } catch (InterruptedException e) {
59                 // Restore interrupt status.
60                 Thread.currentThread().interrupt();
61             }
62             Log.i(TAG, "Stopping service.");
63             // Stop the service using the startId, so that we don't stop
64             // the service in the middle of handling another job
65             stopSelf(msg.arg1);
66         }
67     }
68 
69     @Override
onCreate()70     public void onCreate() {
71         // Start up the thread running the service.  Note that we create a
72         // separate thread because the service normally runs in the process's
73         // main thread, which we don't want to block.  We also make it
74         // background priority so CPU-intensive work will not disrupt our UI.
75         HandlerThread thread = new HandlerThread("ServiceStartArguments",
76                 Process.THREAD_PRIORITY_BACKGROUND);
77         thread.start();
78 
79         // Get the HandlerThread's Looper and use it for our Handler
80         mServiceLooper = thread.getLooper();
81         mServiceHandler = new ServiceHandler(mServiceLooper);
82 
83         if (ApiLevelUtil.isBefore(Build.VERSION_CODES.O_MR1)) {
84             return;
85         }
86         // OMR1 requires notification channel to be set
87         NotificationManager notificationManager =
88                 (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
89         NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID,
90                 NOTIFICATION_CHANNEL_ID,
91                 NotificationManager.IMPORTANCE_HIGH);
92         notificationManager.createNotificationChannel(channel);
93         mChannelCreated = true;
94     }
95 
96     @Override
onStartCommand(Intent intent, int flags, int startId)97     public int onStartCommand(Intent intent, int flags, int startId) {
98         Notification notification = new Notification.Builder(this, NOTIFICATION_CHANNEL_ID)
99                 .setContentTitle("CTS Foreground")
100                 .setSmallIcon(android.R.drawable.ic_secure)
101                 .build();
102         Log.i(TAG, "Starting Foreground.");
103         startForeground(1, notification);
104 
105         Message msg = mServiceHandler.obtainMessage();
106         msg.arg1 = startId;
107         mServiceHandler.sendMessage(msg);
108 
109         return START_NOT_STICKY;
110     }
111 
112     @Override
onBind(Intent intent)113     public IBinder onBind(Intent intent) {
114         return null;
115     }
116 
117     @Override
onDestroy()118     public void onDestroy () {
119         if (mChannelCreated) {
120             NotificationManager notificationManager =
121                     (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
122             notificationManager.deleteNotificationChannel(NOTIFICATION_CHANNEL_ID);
123         }
124     }
125 }
126