-
Notifications
You must be signed in to change notification settings - Fork 0
/
RankingHelper.java
183 lines (163 loc) · 7.6 KB
/
RankingHelper.java
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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
/**
* Copyright (c) 2014, 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.server.notification;
import android.annotation.NonNull;
import android.app.NotificationManager;
import android.content.Context;
import android.service.notification.RankingHelperProto;
import android.util.ArrayMap;
import android.util.Slog;
import android.util.proto.ProtoOutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collections;
public class RankingHelper {
private static final String TAG = "RankingHelper";
private final NotificationSignalExtractor[] mSignalExtractors;
private final NotificationComparator mPreliminaryComparator;
private final GlobalSortKeyComparator mFinalComparator = new GlobalSortKeyComparator();
private final ArrayMap<String, NotificationRecord> mProxyByGroupTmp = new ArrayMap<>();
private final Context mContext;
private final RankingHandler mRankingHandler;
public RankingHelper(Context context, RankingHandler rankingHandler, RankingConfig config,
ZenModeHelper zenHelper, NotificationUsageStats usageStats, String[] extractorNames) {
mContext = context;
mRankingHandler = rankingHandler;
mPreliminaryComparator = new NotificationComparator(mContext);
final int N = extractorNames.length;
mSignalExtractors = new NotificationSignalExtractor[N];
for (int i = 0; i < N; i++) {
try {
Class<?> extractorClass = mContext.getClassLoader().loadClass(extractorNames[i]);
NotificationSignalExtractor extractor =
(NotificationSignalExtractor) extractorClass.newInstance();
extractor.initialize(mContext, usageStats);
extractor.setConfig(config);
extractor.setZenHelper(zenHelper);
mSignalExtractors[i] = extractor;
} catch (ClassNotFoundException e) {
Slog.w(TAG, "Couldn't find extractor " + extractorNames[i] + ".", e);
} catch (InstantiationException e) {
Slog.w(TAG, "Couldn't instantiate extractor " + extractorNames[i] + ".", e);
} catch (IllegalAccessException e) {
Slog.w(TAG, "Problem accessing extractor " + extractorNames[i] + ".", e);
}
}
}
@SuppressWarnings("unchecked")
public <T extends NotificationSignalExtractor> T findExtractor(Class<T> extractorClass) {
final int N = mSignalExtractors.length;
for (int i = 0; i < N; i++) {
final NotificationSignalExtractor extractor = mSignalExtractors[i];
if (extractorClass.equals(extractor.getClass())) {
return (T) extractor;
}
}
return null;
}
public void extractSignals(NotificationRecord r) {
final int N = mSignalExtractors.length;
for (int i = 0; i < N; i++) {
NotificationSignalExtractor extractor = mSignalExtractors[i];
try {
RankingReconsideration recon = extractor.process(r);
if (recon != null) {
mRankingHandler.requestReconsideration(recon);
}
} catch (Throwable t) {
Slog.w(TAG, "NotificationSignalExtractor failed.", t);
}
}
}
public void sort(ArrayList<NotificationRecord> notificationList) {
final int N = notificationList.size();
// clear global sort keys
for (int i = N - 1; i >= 0; i--) {
notificationList.get(i).setGlobalSortKey(null);
}
// rank each record individually
Collections.sort(notificationList, mPreliminaryComparator);
synchronized (mProxyByGroupTmp) {
// record individual ranking result and nominate proxies for each group
for (int i = 0; i < N; i++) {
final NotificationRecord record = notificationList.get(i);
record.setAuthoritativeRank(i);
final String groupKey = record.getGroupKey();
NotificationRecord existingProxy = mProxyByGroupTmp.get(groupKey);
if (existingProxy == null) {
mProxyByGroupTmp.put(groupKey, record);
}
}
// assign global sort key:
// is_recently_intrusive:group_rank:is_group_summary:group_sort_key:rank
for (int i = 0; i < N; i++) {
final NotificationRecord record = notificationList.get(i);
NotificationRecord groupProxy = mProxyByGroupTmp.get(record.getGroupKey());
String groupSortKey = record.getNotification().getSortKey();
// We need to make sure the developer provided group sort key (gsk) is handled
// correctly:
// gsk="" < gsk=non-null-string < gsk=null
//
// We enforce this by using different prefixes for these three cases.
String groupSortKeyPortion;
if (groupSortKey == null) {
groupSortKeyPortion = "nsk";
} else if (groupSortKey.equals("")) {
groupSortKeyPortion = "esk";
} else {
groupSortKeyPortion = "gsk=" + groupSortKey;
}
boolean isGroupSummary = record.getNotification().isGroupSummary();
record.setGlobalSortKey(
String.format("crtcl=0x%04x:intrsv=%c:grnk=0x%04x:gsmry=%c:%s:rnk=0x%04x",
record.getCriticality(),
record.isRecentlyIntrusive()
&& record.getImportance() > NotificationManager.IMPORTANCE_MIN
? '0' : '1',
groupProxy.getAuthoritativeRank(),
isGroupSummary ? '0' : '1',
groupSortKeyPortion,
record.getAuthoritativeRank()));
}
mProxyByGroupTmp.clear();
}
// Do a second ranking pass, using group proxies
Collections.sort(notificationList, mFinalComparator);
}
public int indexOf(ArrayList<NotificationRecord> notificationList, NotificationRecord target) {
return Collections.binarySearch(notificationList, target, mFinalComparator);
}
public void dump(PrintWriter pw, String prefix,
@NonNull NotificationManagerService.DumpFilter filter) {
final int N = mSignalExtractors.length;
pw.print(prefix);
pw.print("mSignalExtractors.length = ");
pw.println(N);
for (int i = 0; i < N; i++) {
pw.print(prefix);
pw.print(" ");
pw.println(mSignalExtractors[i].getClass().getSimpleName());
}
}
public void dump(ProtoOutputStream proto,
@NonNull NotificationManagerService.DumpFilter filter) {
final int N = mSignalExtractors.length;
for (int i = 0; i < N; i++) {
proto.write(RankingHelperProto.NOTIFICATION_SIGNAL_EXTRACTORS,
mSignalExtractors[i].getClass().getSimpleName());
}
}
}