1 /*
2 * Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 #include <memory>
16
17 #include "trace_file_reader.h"
18 #include "common.h"
19 #include "logging.h"
20
21 using CharPtr = std::unique_ptr<char>::pointer;
22
~TraceFileReader()23 TraceFileReader::~TraceFileReader()
24 {
25 if (stream_.is_open()) {
26 stream_.close();
27 }
28 }
29
GetHeader() const30 TraceFileHeader TraceFileReader::GetHeader() const
31 {
32 return header_;
33 }
34
ValidateHeader()35 bool TraceFileReader::ValidateHeader()
36 {
37 return helper_.Validate(header_);
38 }
39
Open(const std::string& path)40 bool TraceFileReader::Open(const std::string& path)
41 {
42 auto retFile = COMMON::CheckNotExistsFilePath(path);
43 if (!retFile.first) {
44 PROFILER_LOG_INFO(LOG_CORE, "check file path %s fail", path.c_str());
45 return false;
46 }
47 std::string realPath = retFile.second;
48 stream_.open(realPath, std::ios_base::in | std::ios_base::binary);
49 CHECK_TRUE(stream_.is_open(), false, "open %s failed, %d!", realPath.c_str(), errno);
50
51 stream_.read(reinterpret_cast<CharPtr>(&header_), sizeof(header_));
52 CHECK_TRUE(stream_, false, "read header from %s failed!", realPath.c_str());
53
54 path_ = realPath;
55 return true;
56 }
57
GetReadPos(std::ifstream& stream)58 static size_t GetReadPos(std::ifstream& stream)
59 {
60 return static_cast<size_t>(stream.tellg());
61 }
62
Read(MessageLite& message)63 long TraceFileReader::Read(MessageLite& message)
64 {
65 CHECK_TRUE(stream_.is_open(), 0, "binary file %s not open or open failed!", path_.c_str());
66 CHECK_TRUE(!stream_.eof(), 0, "no more data in file %s stream", path_.c_str());
67
68 uint32_t msgLen = 0;
69 size_t offset = GetReadPos(stream_);
70 stream_.read(reinterpret_cast<CharPtr>(&msgLen), sizeof(msgLen));
71 RETURN_IF(stream_.eof(), 0, "read file end");
72 CHECK_TRUE(msgLen > 0, 0, "read in file %s msg length: %d", path_.c_str(), msgLen);
73 CHECK_TRUE(stream_, 0, "read msg length from %s (offset %zu) failed, or no more data!", path_.c_str(), offset);
74 CHECK_TRUE(helper_.AddSegment(reinterpret_cast<uint8_t*>(&msgLen), sizeof(msgLen)),
75 0, "Add payload for message length failed!");
76
77 std::vector<char> msgData(msgLen);
78 offset = GetReadPos(stream_);
79 stream_.read(msgData.data(), msgData.size());
80 RETURN_IF(stream_.eof(), 0, "read file end");
81 CHECK_TRUE(stream_, 0, "read msg bytes from %s (offset %zu) failed!", path_.c_str(), offset);
82 CHECK_TRUE(helper_.AddSegment(reinterpret_cast<uint8_t*>(msgData.data()), msgData.size()),
83 0, "Add payload for message bytes failed!");
84
85 CHECK_TRUE(message.ParseFromArray(msgData.data(), msgData.size()), 0, "ParseFromArray failed!");
86 return sizeof(msgLen) + msgData.size();
87 }
88
ReadLen()89 long TraceFileReader::ReadLen()
90 {
91 CHECK_TRUE(stream_.is_open(), 0, "binary file %s not open or open failed!", path_.c_str());
92 CHECK_TRUE(!stream_.eof(), 0, "no more data in file %s stream", path_.c_str());
93
94 uint32_t dataLen = 0;
95 stream_.read(reinterpret_cast<CharPtr>(&dataLen), sizeof(dataLen));
96 RETURN_IF(stream_.eof(), 0, "read file end");
97 CHECK_TRUE(dataLen > 0, 0, "read in file %s data length: %d", path_.c_str(), dataLen);
98 CHECK_TRUE(stream_, 0, "read data length from file %s (offset %zu) failed!", path_.c_str(), GetReadPos(stream_));
99 CHECK_TRUE(helper_.AddSegment(reinterpret_cast<uint8_t*>(&dataLen), sizeof(dataLen)),
100 0, "Add payload for data length failed!");
101 return dataLen;
102 }
103
ReadData(uint8_t buffer[], uint32_t bufferSize)104 bool TraceFileReader::ReadData(uint8_t buffer[], uint32_t bufferSize)
105 {
106 CHECK_TRUE(stream_.is_open(), false, "binary file %s not open or open failed!", path_.c_str());
107 CHECK_TRUE(!stream_.eof(), false, "no more data in file %s stream", path_.c_str());
108
109 stream_.read(reinterpret_cast<CharPtr>(buffer), bufferSize);
110 RETURN_IF(stream_.eof(), false, "read file end. read data bytes from %s failed! (offset %zu)",
111 path_.c_str(), GetReadPos(stream_));
112 CHECK_TRUE(stream_, false, "read data bytes from %s (offset %zu) failed!", path_.c_str(), GetReadPos(stream_));
113 CHECK_TRUE(helper_.AddSegment(buffer, bufferSize), false, "Add payload for data bytes failed!");
114 return true;
115 }
116