Mercurial > hg > orthanc
annotate Core/Logging.cpp @ 1543:8b6d8f9b9f71
fix
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 13 Aug 2015 17:26:46 +0200 |
| parents | 46b2794042d6 |
| children | 0dba274074eb |
| rev | line source |
|---|---|
| 1485 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
| 33 #include "PrecompiledHeaders.h" | |
| 34 #include "Logging.h" | |
| 35 | |
| 1488 | 36 #if ORTHANC_ENABLE_LOGGING == 1 |
| 1485 | 37 |
| 1489 | 38 |
| 39 #if ORTHANC_ENABLE_GOOGLE_LOG == 1 | |
| 40 | |
| 41 /********************************************************* | |
| 42 * Wrapper around Google Log | |
| 43 *********************************************************/ | |
| 44 | |
| 1485 | 45 namespace Orthanc |
| 46 { | |
| 47 namespace Logging | |
| 48 { | |
| 49 void Initialize() | |
| 50 { | |
| 51 // Initialize Google's logging library. | |
| 52 FLAGS_logtostderr = true; | |
| 53 FLAGS_minloglevel = 1; // Do not print LOG(INFO) by default | |
| 54 FLAGS_v = 0; // Do not print trace-level VLOG(1) by default | |
| 55 | |
| 56 google::InitGoogleLogging("Orthanc"); | |
| 57 } | |
| 58 | |
| 59 void Finalize() | |
| 60 { | |
| 61 google::ShutdownGoogleLogging(); | |
| 62 } | |
| 63 | |
| 64 void EnableInfoLevel(bool enabled) | |
| 65 { | |
| 66 FLAGS_minloglevel = (enabled ? 0 : 1); | |
| 67 } | |
| 68 | |
| 69 void EnableTraceLevel(bool enabled) | |
| 70 { | |
| 71 if (enabled) | |
| 72 { | |
| 73 FLAGS_minloglevel = 0; | |
| 74 FLAGS_v = 1; | |
| 75 } | |
| 76 else | |
| 77 { | |
| 78 FLAGS_v = 0; | |
| 79 } | |
| 80 } | |
| 1489 | 81 |
| 82 void SetTargetFolder(const std::string& path) | |
| 83 { | |
| 84 FLAGS_logtostderr = false; | |
| 85 FLAGS_log_dir = path; | |
| 86 } | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 #else | |
| 91 | |
| 92 /********************************************************* | |
| 93 * Use internal logger, not Google Log | |
| 94 *********************************************************/ | |
| 95 | |
| 96 #include "OrthancException.h" | |
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97 #include "Enumerations.h" |
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98 #include "Toolbox.h" |
| 1489 | 99 |
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100 #include <fstream> |
| 1489 | 101 #include <boost/filesystem.hpp> |
| 102 #include <boost/thread.hpp> | |
| 103 | |
| 104 #if BOOST_HAS_DATE_TIME == 1 | |
| 105 # include <boost/date_time/posix_time/posix_time.hpp> | |
| 106 #else | |
| 107 # error Boost::date_time is required | |
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108 #endif |
| 1489 | 109 |
| 110 | |
| 111 namespace | |
| 112 { | |
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113 struct LoggingState |
| 1489 | 114 { |
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115 bool infoEnabled_; |
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116 bool traceEnabled_; |
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117 |
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118 std::ostream* error_; |
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119 std::ostream* warning_; |
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120 std::ostream* info_; |
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121 |
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122 std::auto_ptr<std::ofstream> errorFile_; |
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123 std::auto_ptr<std::ofstream> warningFile_; |
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124 std::auto_ptr<std::ofstream> infoFile_; |
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125 |
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126 LoggingState() : |
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127 infoEnabled_(false), |
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128 traceEnabled_(false), |
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129 error_(&std::cerr), |
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130 warning_(&std::cerr), |
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131 info_(&std::cerr) |
| 1489 | 132 { |
| 133 } | |
| 134 }; | |
| 135 } | |
| 136 | |
| 137 | |
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138 |
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139 static std::auto_ptr<LoggingState> loggingState_; |
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140 static boost::mutex loggingMutex_; |
| 1489 | 141 |
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142 |
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143 |
| 1489 | 144 namespace Orthanc |
| 145 { | |
| 146 namespace Logging | |
| 147 { | |
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148 static void GetLogPath(boost::filesystem::path& log, |
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149 boost::filesystem::path& link, |
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150 const char* level, |
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151 const std::string& directory) |
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152 { |
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153 /** |
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154 From Google Log documentation: |
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155 |
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156 Unless otherwise specified, logs will be written to the filename |
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157 "<program name>.<hostname>.<user name>.log.<severity level>.", |
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158 followed by the date, time, and pid (you can't prevent the date, |
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159 time, and pid from being in the filename). |
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160 |
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161 In this implementation : "hostname" and "username" are not used |
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162 **/ |
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163 |
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164 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); |
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165 boost::filesystem::path root(directory); |
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166 boost::filesystem::path exe(Toolbox::GetPathToExecutable()); |
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167 |
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168 if (!boost::filesystem::exists(root) || |
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169 !boost::filesystem::is_directory(root)) |
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170 { |
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171 throw OrthancException(ErrorCode_CannotWriteFile); |
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172 } |
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173 |
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174 char date[64]; |
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175 sprintf(date, "%04d%02d%02d-%02d%02d%02d.%d", |
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176 static_cast<int>(now.date().year()), |
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177 now.date().month().as_number(), |
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178 now.date().day().as_number(), |
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179 now.time_of_day().hours(), |
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180 now.time_of_day().minutes(), |
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181 now.time_of_day().seconds(), |
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182 Toolbox::GetProcessId()); |
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183 |
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184 std::string programName = exe.filename().replace_extension("").string(); |
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185 |
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186 log = (root / (programName + ".log." + |
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187 std::string(level) + "." + |
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188 std::string(date))); |
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189 |
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190 link = (root / (programName + "." + std::string(level))); |
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191 } |
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192 |
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193 |
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194 static void PrepareLogFile(std::ostream*& stream, |
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195 std::auto_ptr<std::ofstream>& file, |
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196 const char* level, |
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197 const std::string& directory) |
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198 { |
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199 boost::filesystem::path log, link; |
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200 GetLogPath(log, link, level, directory); |
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201 |
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202 #if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__))) |
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203 boost::filesystem::remove(link); |
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204 boost::filesystem::create_symlink(log.filename(), link); |
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205 #endif |
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206 |
| 1494 | 207 file.reset(new std::ofstream(log.string().c_str())); |
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208 stream = file.get(); |
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209 } |
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210 |
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211 |
| 1489 | 212 void Initialize() |
| 213 { | |
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214 boost::mutex::scoped_lock lock(loggingMutex_); |
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215 loggingState_.reset(new LoggingState); |
| 1489 | 216 } |
| 217 | |
| 218 void Finalize() | |
| 219 { | |
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220 boost::mutex::scoped_lock lock(loggingMutex_); |
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221 loggingState_.reset(NULL); |
| 1489 | 222 } |
| 223 | |
| 224 void EnableInfoLevel(bool enabled) | |
| 225 { | |
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226 boost::mutex::scoped_lock lock(loggingMutex_); |
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227 assert(loggingState_.get() != NULL); |
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228 |
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229 loggingState_->infoEnabled_ = enabled; |
| 1489 | 230 } |
| 231 | |
| 232 void EnableTraceLevel(bool enabled) | |
| 233 { | |
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234 boost::mutex::scoped_lock lock(loggingMutex_); |
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235 assert(loggingState_.get() != NULL); |
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236 |
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237 loggingState_->traceEnabled_ = enabled; |
| 1489 | 238 |
| 239 if (enabled) | |
| 240 { | |
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241 // Also enable the "INFO" level when trace-level debugging is enabled |
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242 loggingState_->infoEnabled_ = true; |
| 1489 | 243 } |
| 244 } | |
| 245 | |
| 246 void SetTargetFolder(const std::string& path) | |
| 247 { | |
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248 boost::mutex::scoped_lock lock(loggingMutex_); |
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249 assert(loggingState_.get() != NULL); |
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250 |
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251 PrepareLogFile(loggingState_->error_, loggingState_->errorFile_, "ERROR", path); |
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252 PrepareLogFile(loggingState_->warning_, loggingState_->warningFile_, "WARNING", path); |
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253 PrepareLogFile(loggingState_->info_, loggingState_->infoFile_, "INFO", path); |
| 1489 | 254 } |
| 255 | |
| 256 InternalLogger::InternalLogger(const char* level, | |
| 257 const char* file, | |
| 258 int line) : | |
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259 lock_(loggingMutex_), |
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260 stream_(&null_) // By default, logging to "/dev/null" is simulated |
| 1489 | 261 { |
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262 if (loggingState_.get() == NULL) |
| 1489 | 263 { |
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264 fprintf(stderr, "ERROR: Trying to log a message after the finalization of the logging engine\n"); |
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265 return; |
| 1489 | 266 } |
| 267 | |
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268 LogLevel l = StringToLogLevel(level); |
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269 |
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270 if ((l == LogLevel_Info && !loggingState_->infoEnabled_) || |
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271 (l == LogLevel_Trace && !loggingState_->traceEnabled_)) |
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272 { |
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273 // This logging level is disabled, directly exit and unlock |
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274 // the mutex to speed-up things. The stream is set to "/dev/null" |
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275 lock_.unlock(); |
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276 return; |
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277 } |
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278 |
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279 // Compute the header of the line, temporary release the lock as |
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280 // this is a time-consuming operation |
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281 lock_.unlock(); |
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282 std::string header; |
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283 |
| 1489 | 284 { |
| 285 boost::filesystem::path path(file); | |
| 286 boost::posix_time::ptime now = boost::posix_time::microsec_clock::local_time(); | |
| 287 boost::posix_time::time_duration duration = now.time_of_day(); | |
| 288 | |
| 289 /** | |
| 290 From Google Log documentation: | |
| 291 | |
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292 "Log lines have this form: |
| 1489 | 293 |
| 294 Lmmdd hh:mm:ss.uuuuuu threadid file:line] msg... | |
| 295 | |
| 296 where the fields are defined as follows: | |
| 297 | |
| 298 L A single character, representing the log level (eg 'I' for INFO) | |
| 299 mm The month (zero padded; ie May is '05') | |
| 300 dd The day (zero padded) | |
| 301 hh:mm:ss.uuuuuu Time in hours, minutes and fractional seconds | |
| 302 threadid The space-padded thread ID as returned by GetTID() (this matches the PID on Linux) | |
| 303 file The file name | |
| 304 line The line number | |
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305 msg The user-supplied message" |
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306 |
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307 In this implementation, "threadid" is not printed. |
| 1489 | 308 **/ |
| 309 | |
| 310 char date[32]; | |
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311 sprintf(date, "%c%02d%02d %02d:%02d:%02d.%06d ", |
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312 level[0], |
| 1489 | 313 now.date().month().as_number(), |
| 314 now.date().day().as_number(), | |
| 315 duration.hours(), | |
| 316 duration.minutes(), | |
| 317 duration.seconds(), | |
| 318 static_cast<int>(duration.fractional_seconds())); | |
| 319 | |
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320 header = std::string(date) + path.filename().string() + ":" + boost::lexical_cast<std::string>(line) + "] "; |
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321 } |
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322 |
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323 |
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324 // The header is computed, we now re-lock the mutex to access |
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325 // the stream objects. Pay attention that "loggingState_", |
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326 // "infoEnabled_" or "traceEnabled_" might have changed while |
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327 // the mutex was unlocked. |
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328 lock_.lock(); |
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329 |
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330 if (loggingState_.get() == NULL) |
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331 { |
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332 fprintf(stderr, "ERROR: Trying to log a message after the finalization of the logging engine\n"); |
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333 return; |
| 1489 | 334 } |
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335 |
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336 switch (l) |
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337 { |
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338 case LogLevel_Error: |
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339 stream_ = loggingState_->error_; |
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340 break; |
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341 |
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342 case LogLevel_Warning: |
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343 stream_ = loggingState_->warning_; |
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344 break; |
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345 |
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346 case LogLevel_Info: |
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347 if (loggingState_->infoEnabled_) |
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348 { |
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349 stream_ = loggingState_->info_; |
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350 } |
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351 |
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352 break; |
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353 |
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354 case LogLevel_Trace: |
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355 if (loggingState_->traceEnabled_) |
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356 { |
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357 stream_ = loggingState_->info_; |
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358 } |
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359 |
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360 break; |
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361 |
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362 default: |
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363 throw OrthancException(ErrorCode_InternalError); |
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364 } |
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365 |
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366 if (stream_ == &null_) |
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367 { |
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368 // The logging is disabled for this level. The stream is the |
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369 // "null_" member of this object, so we can release the global |
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370 // mutex. |
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371 lock_.unlock(); |
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372 } |
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373 |
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374 (*stream_) << header; |
| 1489 | 375 } |
| 1507 | 376 |
| 377 | |
| 378 InternalLogger::~InternalLogger() | |
| 379 { | |
| 380 if (stream_ != &null_) | |
| 381 { | |
| 382 #if defined(_WIN32) | |
| 383 *stream_ << "\r\n"; | |
| 384 #else | |
| 385 *stream_ << "\n"; | |
| 386 #endif | |
| 387 | |
| 388 stream_->flush(); | |
| 389 } | |
| 390 } | |
| 391 | |
| 392 | |
| 1485 | 393 } |
| 394 } | |
| 1488 | 395 |
| 396 #endif | |
| 1489 | 397 |
| 398 | |
| 399 #endif // ORTHANC_ENABLE_LOGGING |