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 #define LOG_TAG "incident_helper"
17
18 #include <android/util/ProtoOutputStream.h>
19
20 #include "frameworks/base/core/proto/android/os/kernelwake.proto.h"
21 #include "ih_util.h"
22 #include "KernelWakesParser.h"
23
24 using namespace android::os;
25
26 status_t
Parse(const int in,const int out) const27 KernelWakesParser::Parse(const int in, const int out) const
28 {
29 Reader reader(in);
30 string line;
31 header_t header; // the header of /d/wakeup_sources
32 record_t record; // retain each record
33 int nline = 0;
34
35 ProtoOutputStream proto;
36 Table table(KernelWakeSourcesProto::WakeupSource::_FIELD_NAMES,
37 KernelWakeSourcesProto::WakeupSource::_FIELD_IDS,
38 KernelWakeSourcesProto::WakeupSource::_FIELD_COUNT);
39
40 // parse line by line
41 while (reader.readLine(&line)) {
42 if (line.empty()) continue;
43 // parse head line
44 if (nline++ == 0) {
45 header = parseHeader(line, TAB_DELIMITER);
46 continue;
47 }
48
49 // parse for each record, the line delimiter is \t only!
50 record = parseRecord(line, TAB_DELIMITER);
51
52 if (record.size() < header.size()) {
53 // TODO: log this to incident report!
54 fprintf(stderr, "[%s]Line %d has missing fields\n%s\n", this->name.string(), nline, line.c_str());
55 continue;
56 } else if (record.size() > header.size()) {
57 // TODO: log this to incident report!
58 fprintf(stderr, "[%s]Line %d has extra fields\n%s\n", this->name.string(), nline, line.c_str());
59 continue;
60 }
61
62 uint64_t token = proto.start(KernelWakeSourcesProto::WAKEUP_SOURCES);
63 for (int i=0; i<(int)record.size(); i++) {
64 if (!table.insertField(&proto, header[i], record[i])) {
65 fprintf(stderr, "[%s]Line %d has bad value %s of %s\n",
66 this->name.string(), nline, header[i].c_str(), record[i].c_str());
67 }
68 }
69 proto.end(token);
70 }
71
72 if (!reader.ok(&line)) {
73 fprintf(stderr, "Bad read from fd %d: %s\n", in, line.c_str());
74 return -1;
75 }
76
77 if (!proto.flush(out)) {
78 fprintf(stderr, "[%s]Error writing proto back\n", this->name.string());
79 return -1;
80 }
81 fprintf(stderr, "[%s]Proto size: %zu bytes\n", this->name.string(), proto.size());
82 return NO_ERROR;
83 }
84