1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
package com.android.server.deviceconfig;
import android.annotation.NonNull;
import android.app.AlarmManager;
import android.app.Notification;
import android.app.Notification.Action;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.IntentFilter;
import android.content.BroadcastReceiver;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.Context;
import android.graphics.drawable.Icon;
import android.os.PowerManager;
import android.provider.DeviceConfig.OnPropertiesChangedListener;
import android.provider.DeviceConfig.Properties;
import android.util.Slog;
import com.android.server.deviceconfig.resources.R;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import static android.app.NotificationManager.IMPORTANCE_HIGH;
/**
* Creates notifications when flags are staged on the device.
*
* The notification alerts the user to reboot, to apply the staged flags.
*
* @hide
*/
class BootNotificationCreator implements OnPropertiesChangedListener {
private static final String TAG = "DeviceConfigBootNotificationCreator";
private static final String RESOURCES_PACKAGE =
"com.android.server.deviceconfig.resources";
private static final String REBOOT_REASON = "DeviceConfig";
private static final String ACTION_TRIGGER_HARD_REBOOT =
"com.android.server.deviceconfig.TRIGGER_HARD_REBOOT";
private static final String ACTION_POST_NOTIFICATION =
"com.android.server.deviceconfig.POST_NOTIFICATION";
private static final String CHANNEL_ID = "trunk-stable-flags";
private static final String CHANNEL_NAME = "Trunkfood flags";
private static final int NOTIFICATION_ID = 111555;
private NotificationManager notificationManager;
private PowerManager powerManager;
private AlarmManager alarmManager;
private Context context;
private static final int REBOOT_HOUR = 18;
private static final int REBOOT_MINUTE = 2;
public BootNotificationCreator(@NonNull Context context) {
this.context = context;
this.context.registerReceiver(
new HardRebootBroadcastReceiver(),
new IntentFilter(ACTION_TRIGGER_HARD_REBOOT),
Context.RECEIVER_EXPORTED);
this.context.registerReceiver(
new PostNotificationBroadcastReceiver(),
new IntentFilter(ACTION_POST_NOTIFICATION),
Context.RECEIVER_EXPORTED);
}
@Override
public void onPropertiesChanged(Properties properties) {
if (!tryInitializeDependenciesIfNeeded()) {
Slog.i(TAG, "not posting notif; service dependencies not ready");
return;
}
PendingIntent pendingIntent =
PendingIntent.getBroadcast(
context,
/* requestCode= */ 1,
new Intent(ACTION_POST_NOTIFICATION),
PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
ZonedDateTime now = Instant
.ofEpochMilli(System.currentTimeMillis())
.atZone(ZoneId.systemDefault());
LocalDateTime currentTime = now.toLocalDateTime();
LocalDateTime postTime = now.toLocalDate().atTime(REBOOT_HOUR, REBOOT_MINUTE);
LocalDateTime scheduledPostTime =
currentTime.isBefore(postTime) ? postTime : postTime.plusDays(1);
long scheduledPostTimeLong = scheduledPostTime
.atZone(ZoneId.systemDefault())
.toInstant()
.toEpochMilli();
alarmManager.setExact(
AlarmManager.RTC_WAKEUP, scheduledPostTimeLong, pendingIntent);
}
private class PostNotificationBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
PendingIntent pendingIntent =
PendingIntent.getBroadcast(
context,
/* requestCode= */ 1,
new Intent(ACTION_TRIGGER_HARD_REBOOT),
PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_IMMUTABLE);
try {
Context resourcesContext = context.createPackageContext(RESOURCES_PACKAGE, 0);
Action action = new Action.Builder(
Icon.createWithResource(resourcesContext, R.drawable.ic_restart),
resourcesContext.getString(R.string.boot_notification_action_text),
pendingIntent).build();
Notification notification = new Notification.Builder(context, CHANNEL_ID)
.setContentText(resourcesContext.getString(R.string.boot_notification_content))
.setContentTitle(resourcesContext.getString(R.string.boot_notification_title))
.setSmallIcon(Icon.createWithResource(resourcesContext, R.drawable.ic_flag))
.addAction(action)
.build();
notificationManager.notify(NOTIFICATION_ID, notification);
} catch (NameNotFoundException e) {
Slog.e(TAG, "failed to post boot notification", e);
}
}
}
private class HardRebootBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
powerManager.reboot(REBOOT_REASON);
}
}
/**
* If deps are not initialized yet, try to initialize them.
*
* @return true if the dependencies are newly or already initialized,
* or false if they are not ready yet
*/
private boolean tryInitializeDependenciesIfNeeded() {
if (notificationManager == null) {
notificationManager = context.getSystemService(NotificationManager.class);
if (notificationManager != null) {
notificationManager.createNotificationChannel(
new NotificationChannel(CHANNEL_ID, CHANNEL_NAME, IMPORTANCE_HIGH));
}
}
if (alarmManager == null) {
alarmManager = context.getSystemService(AlarmManager.class);
}
if (powerManager == null) {
powerManager = context.getSystemService(PowerManager.class);
}
return notificationManager != null
&& alarmManager != null
&& powerManager != null;
}
}
|
