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
|
// Copyright (C) 2016 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.google.gerrit.server.notedb;
import static com.google.common.base.Preconditions.checkArgument;
import static com.google.gerrit.server.CommentsUtil.COMMENT_ORDER;
import static java.nio.charset.StandardCharsets.UTF_8;
import com.google.common.collect.ListMultimap;
import com.google.common.collect.Maps;
import com.google.common.collect.MultimapBuilder;
import com.google.gerrit.reviewdb.client.Comment;
import com.google.gerrit.reviewdb.client.RevId;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
class RevisionNoteBuilder {
static class Cache {
private final RevisionNoteMap<? extends RevisionNote<? extends Comment>> revisionNoteMap;
private final Map<RevId, RevisionNoteBuilder> builders;
Cache(RevisionNoteMap<? extends RevisionNote<? extends Comment>> revisionNoteMap) {
this.revisionNoteMap = revisionNoteMap;
this.builders = new HashMap<>();
}
RevisionNoteBuilder get(RevId revId) {
RevisionNoteBuilder b = builders.get(revId);
if (b == null) {
b = new RevisionNoteBuilder(revisionNoteMap.revisionNotes.get(revId));
builders.put(revId, b);
}
return b;
}
Map<RevId, RevisionNoteBuilder> getBuilders() {
return Collections.unmodifiableMap(builders);
}
}
final byte[] baseRaw;
final List<? extends Comment> baseComments;
final Map<Comment.Key, Comment> put;
final Set<Comment.Key> delete;
private String pushCert;
RevisionNoteBuilder(RevisionNote<? extends Comment> base) {
if (base != null) {
baseRaw = base.getRaw();
baseComments = base.getComments();
put = Maps.newHashMapWithExpectedSize(baseComments.size());
if (base instanceof ChangeRevisionNote) {
pushCert = ((ChangeRevisionNote) base).getPushCert();
}
} else {
baseRaw = new byte[0];
baseComments = Collections.emptyList();
put = new HashMap<>();
pushCert = null;
}
delete = new HashSet<>();
}
public byte[] build(ChangeNoteUtil noteUtil, boolean writeJson) throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
if (writeJson) {
buildNoteJson(noteUtil, out);
} else {
buildNoteLegacy(noteUtil, out);
}
return out.toByteArray();
}
void putComment(Comment comment) {
checkArgument(!delete.contains(comment.key), "cannot both delete and put %s", comment.key);
put.put(comment.key, comment);
}
void deleteComment(Comment.Key key) {
checkArgument(!put.containsKey(key), "cannot both delete and put %s", key);
delete.add(key);
}
void setPushCertificate(String pushCert) {
this.pushCert = pushCert;
}
private ListMultimap<Integer, Comment> buildCommentMap() {
ListMultimap<Integer, Comment> all = MultimapBuilder.hashKeys().arrayListValues().build();
for (Comment c : baseComments) {
if (!delete.contains(c.key) && !put.containsKey(c.key)) {
all.put(c.key.patchSetId, c);
}
}
for (Comment c : put.values()) {
if (!delete.contains(c.key)) {
all.put(c.key.patchSetId, c);
}
}
return all;
}
private void buildNoteJson(ChangeNoteUtil noteUtil, OutputStream out) throws IOException {
ListMultimap<Integer, Comment> comments = buildCommentMap();
if (comments.isEmpty() && pushCert == null) {
return;
}
RevisionNoteData data = new RevisionNoteData();
data.comments = COMMENT_ORDER.sortedCopy(comments.values());
data.pushCert = pushCert;
try (OutputStreamWriter osw = new OutputStreamWriter(out, UTF_8)) {
noteUtil.getGson().toJson(data, osw);
}
}
private void buildNoteLegacy(ChangeNoteUtil noteUtil, OutputStream out) throws IOException {
if (pushCert != null) {
byte[] certBytes = pushCert.getBytes(UTF_8);
out.write(certBytes, 0, trimTrailingNewlines(certBytes));
out.write('\n');
}
noteUtil.buildNote(buildCommentMap(), out);
}
private static int trimTrailingNewlines(byte[] bytes) {
int p = bytes.length;
while (p > 1 && bytes[p - 1] == '\n') {
p--;
}
return p;
}
}
|
