1 /*
2 * Copyright (C) 2024 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 #include "src/trace_processor/importers/proto/winscope/protolog_message_decoder.h"
18
19 #include <cstdint>
20 #include <optional>
21 #include <vector>
22
23 #include "perfetto/ext/base/flat_hash_map.h"
24 #include "perfetto/ext/base/string_utils.h"
25 #include "perfetto/ext/base/string_view.h"
26
27 namespace perfetto::trace_processor {
28
ProtoLogMessageDecoder(TraceProcessorContext * context)29 ProtoLogMessageDecoder::ProtoLogMessageDecoder(TraceProcessorContext* context)
30 : context_(context) {}
31 ProtoLogMessageDecoder::~ProtoLogMessageDecoder() = default;
32
Decode(uint64_t message_id,const std::vector<int64_t> & sint64_params,const std::vector<double> & double_params,const std::vector<bool> & boolean_params,const std::vector<std::string> & string_params)33 std::optional<DecodedMessage> ProtoLogMessageDecoder::Decode(
34 uint64_t message_id,
35 const std::vector<int64_t>& sint64_params,
36 const std::vector<double>& double_params,
37 const std::vector<bool>& boolean_params,
38 const std::vector<std::string>& string_params) {
39 auto tracked_message = tracked_messages_.Find(message_id);
40 if (tracked_message == nullptr) {
41 return std::nullopt;
42 }
43
44 auto message = tracked_message->message;
45
46 auto group = tracked_groups_.Find(tracked_message->group_id);
47 if (group == nullptr) {
48 return std::nullopt;
49 }
50
51 std::string formatted_message;
52 formatted_message.reserve(message.size());
53
54 auto sint64_params_itr = sint64_params.begin();
55 auto double_params_itr = double_params.begin();
56 auto boolean_params_itr = boolean_params.begin();
57 auto str_params_itr = string_params.begin();
58
59 for (size_t i = 0; i < message.length();) {
60 if (message.at(i) == '%' && i + 1 < message.length()) {
61 switch (message.at(i + 1)) {
62 case '%':
63 break;
64 case 'd': {
65 base::StackString<32> param("%" PRId64, *sint64_params_itr);
66 formatted_message.append(param.c_str());
67 ++sint64_params_itr;
68 break;
69 }
70 case 'o': {
71 base::StackString<32> param("%" PRIo64, *sint64_params_itr);
72 formatted_message.append(param.c_str());
73 ++sint64_params_itr;
74 break;
75 }
76 case 'x': {
77 base::StackString<32> param("%" PRIx64, *sint64_params_itr);
78 formatted_message.append(param.c_str());
79 ++sint64_params_itr;
80 break;
81 }
82 case 'f': {
83 base::StackString<32> param("%f", *double_params_itr);
84 formatted_message.append(param.c_str());
85 ++double_params_itr;
86 break;
87 }
88 case 'e': {
89 base::StackString<32> param("%e", *double_params_itr);
90 formatted_message.append(param.c_str());
91 ++double_params_itr;
92 break;
93 }
94 case 'g': {
95 base::StackString<32> param("%g", *double_params_itr);
96 formatted_message.append(param.c_str());
97 ++double_params_itr;
98 break;
99 }
100 case 's': {
101 formatted_message.append(*str_params_itr);
102 ++str_params_itr;
103 break;
104 }
105 case 'b': {
106 formatted_message.append(*boolean_params_itr ? "true" : "false");
107 ++boolean_params_itr;
108 break;
109 }
110 default:
111 formatted_message.push_back(message[i]);
112 formatted_message.push_back(message[i + 1]);
113 }
114
115 i += 2;
116 } else {
117 formatted_message.push_back(message[i]);
118 i += 1;
119 }
120 }
121
122 return DecodedMessage{tracked_message->level, group->tag, formatted_message,
123 tracked_message->location};
124 }
125
TrackGroup(uint32_t id,const std::string & tag)126 void ProtoLogMessageDecoder::TrackGroup(uint32_t id, const std::string& tag) {
127 auto tracked_group = tracked_groups_.Find(id);
128 if (tracked_group != nullptr && tracked_group->tag != tag) {
129 context_->storage->IncrementStats(
130 stats::winscope_protolog_view_config_collision);
131 }
132 tracked_groups_.Insert(id, TrackedGroup{tag});
133 }
134
TrackMessage(uint64_t message_id,ProtoLogLevel level,uint32_t group_id,const std::string & message,const std::optional<std::string> & location)135 void ProtoLogMessageDecoder::TrackMessage(
136 uint64_t message_id,
137 ProtoLogLevel level,
138 uint32_t group_id,
139 const std::string& message,
140 const std::optional<std::string>& location) {
141 auto tracked_message = tracked_messages_.Find(message_id);
142 if (tracked_message != nullptr && tracked_message->message != message) {
143 context_->storage->IncrementStats(
144 stats::winscope_protolog_view_config_collision);
145 }
146 tracked_messages_.Insert(message_id,
147 TrackedMessage{level, group_id, message, location});
148 }
149
150 } // namespace perfetto::trace_processor
151