Mercurial > hg > orthanc
annotate Core/Logging.cpp @ 2483:9c54c40eaf25
logging primitives for WebAssembly
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 02 Mar 2018 15:10:37 +0100 |
parents | 878b59270859 |
children | 911e62dbb4ac |
rev | line source |
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1485 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
1485 | 4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
1485 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU General Public License as | |
9 * published by the Free Software Foundation, either version 3 of the | |
10 * License, or (at your option) any later version. | |
11 * | |
12 * In addition, as a special exception, the copyright holders of this | |
13 * program give permission to link the code of its release with the | |
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
15 * that use the same license as the "OpenSSL" library), and distribute | |
16 * the linked executables. You must obey the GNU General Public License | |
17 * in all respects for all of the code used other than "OpenSSL". If you | |
18 * modify file(s) with this exception, you may extend this exception to | |
19 * your version of the file(s), but you are not obligated to do so. If | |
20 * you do not wish to do so, delete this exception statement from your | |
21 * version. If you delete this exception statement from all source files | |
22 * in the program, then also delete it here. | |
23 * | |
24 * This program is distributed in the hope that it will be useful, but | |
25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
27 * General Public License for more details. | |
28 * | |
29 * You should have received a copy of the GNU General Public License | |
30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
31 **/ | |
32 | |
33 | |
34 #include "PrecompiledHeaders.h" | |
35 #include "Logging.h" | |
36 | |
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37 #if ORTHANC_ENABLE_LOGGING != 1 |
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38 |
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39 namespace Orthanc |
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40 { |
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41 namespace Logging |
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42 { |
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43 void Initialize() |
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44 { |
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45 } |
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46 |
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47 void Finalize() |
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48 { |
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49 } |
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51 void Reset() |
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52 { |
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53 } |
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54 |
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55 void Flush() |
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56 { |
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57 } |
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58 |
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59 void EnableInfoLevel(bool enabled) |
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60 { |
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61 } |
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63 void EnableTraceLevel(bool enabled) |
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64 { |
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65 } |
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66 |
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67 void SetTargetFile(const std::string& path) |
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68 { |
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69 } |
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70 |
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71 void SetTargetFolder(const std::string& path) |
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72 { |
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73 } |
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74 } |
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75 } |
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76 |
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77 |
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78 #elif ORTHANC_ENABLE_LOGGING_PLUGIN == 1 |
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79 |
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80 /********************************************************* |
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81 * Logger compatible with the Orthanc plugin SDK |
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82 *********************************************************/ |
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83 |
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84 #include <boost/lexical_cast.hpp> |
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85 |
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86 namespace Orthanc |
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87 { |
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88 namespace Logging |
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89 { |
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90 static OrthancPluginContext* context_ = NULL; |
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91 |
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92 void Initialize(OrthancPluginContext* context) |
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93 { |
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95 } |
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96 |
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97 InternalLogger::InternalLogger(const char* level, |
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98 const char* file /* ignored */, |
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99 int line /* ignored */) : |
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100 level_(level) |
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101 { |
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102 } |
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103 |
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104 InternalLogger::~InternalLogger() |
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105 { |
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106 if (context_ != NULL) |
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107 { |
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108 switch (level_) |
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109 { |
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110 case ERROR: |
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111 OrthancPluginLogError(context_, message_.c_str()); |
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112 break; |
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113 |
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114 case WARNING: |
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115 OrthancPluginLogWarning(context_, message_.c_str()); |
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116 break; |
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117 |
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118 case INFO: |
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119 OrthancPluginLogInfo(context_, message_.c_str()); |
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120 break; |
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121 |
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122 case TRACE: |
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123 // Not used by plugins |
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124 break; |
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125 |
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126 default: |
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127 { |
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128 std::string s = ("Unknown log level (" + boost::lexical_cast<std::string>(level_) + |
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129 ") for message: " + message_); |
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130 OrthancPluginLogError(context_, s.c_str()); |
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131 break; |
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132 } |
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134 } |
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135 } |
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136 |
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137 InternalLogger& InternalLogger::operator<< (const std::string& message) |
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138 { |
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139 message_ += message; |
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140 return *this; |
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141 } |
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142 |
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143 InternalLogger& InternalLogger::operator<< (const char* message) |
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144 { |
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145 message_ += std::string(message); |
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146 return *this; |
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147 } |
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148 |
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149 InternalLogger& InternalLogger::operator<< (int message) |
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150 { |
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151 message_ += boost::lexical_cast<std::string>(message); |
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152 return *this; |
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153 } |
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154 } |
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155 } |
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156 |
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157 |
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158 #elif ORTHANC_ENABLE_LOGGING_STDIO == 1 |
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159 |
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160 /********************************************************* |
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161 * Logger compatible with <stdio.h> |
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162 *********************************************************/ |
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163 |
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164 #include <stdio.h> |
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165 #include <boost/lexical_cast.hpp> |
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166 |
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167 namespace Orthanc |
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168 { |
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169 namespace Logging |
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170 { |
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171 static bool globalVerbose_ = false; |
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172 static bool globalTrace_ = false; |
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173 |
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174 InternalLogger::InternalLogger(Level level, |
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175 const char* file /* ignored */, |
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176 int line /* ignored */) : |
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177 level_(level) |
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178 { |
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179 } |
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180 |
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181 InternalLogger::~InternalLogger() |
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182 { |
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183 switch (level_) |
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184 { |
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185 case ERROR: |
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186 fprintf(stderr, "E: %s\n", message_.c_str()); |
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187 break; |
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188 |
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189 case WARNING: |
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190 fprintf(stdout, "W: %s\n", message_.c_str()); |
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191 break; |
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192 |
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193 case INFO: |
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194 if (globalVerbose_) |
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195 { |
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196 fprintf(stdout, "I: %s\n", message_.c_str()); |
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197 } |
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198 break; |
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199 |
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200 case TRACE: |
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201 if (globalTrace_) |
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202 { |
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203 fprintf(stdout, "T: %s\n", message_.c_str()); |
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204 } |
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205 break; |
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206 |
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207 default: |
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208 fprintf(stderr, "Unknown log level (%d) for message: %s\n", level_, message_.c_str()); |
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209 } |
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210 } |
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211 |
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212 InternalLogger& InternalLogger::operator<< (const std::string& message) |
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213 { |
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214 message_ += message; |
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215 return *this; |
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216 } |
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217 |
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218 InternalLogger& InternalLogger::operator<< (const char* message) |
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219 { |
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220 message_ += std::string(message); |
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221 return *this; |
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222 } |
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223 |
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224 InternalLogger& InternalLogger::operator<< (int message) |
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225 { |
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226 message_ += boost::lexical_cast<std::string>(message); |
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227 return *this; |
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228 } |
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229 |
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230 void EnableInfoLevel(bool enabled) |
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231 { |
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232 globalVerbose_ = enabled; |
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233 } |
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234 |
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235 void EnableTraceLevel(bool enabled) |
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236 { |
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237 globalTrace_ = enabled; |
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238 } |
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239 } |
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240 } |
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241 |
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242 |
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243 #else /* ORTHANC_ENABLE_LOGGING_PLUGIN == 0 && |
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244 ORTHANC_ENABLE_LOGGING_STDIO == 0 && |
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245 ORTHANC_ENABLE_LOGGING == 1 */ |
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247 /********************************************************* | |
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248 * Internal logger of Orthanc, that mimics some |
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249 * behavior from Google Log. |
1489 | 250 *********************************************************/ |
251 | |
252 #include "OrthancException.h" | |
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253 #include "Enumerations.h" |
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254 #include "Toolbox.h" |
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255 |
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256 #if ORTHANC_SANDBOXED == 1 |
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257 # include <stdio.h> |
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258 #else |
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259 # include "SystemToolbox.h" |
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260 #endif |
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262 #include <fstream> |
1489 | 263 #include <boost/filesystem.hpp> |
264 #include <boost/thread.hpp> | |
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265 #include <boost/date_time/posix_time/posix_time.hpp> |
1489 | 266 |
267 | |
268 namespace | |
269 { | |
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270 struct LoggingContext |
1489 | 271 { |
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272 bool infoEnabled_; |
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273 bool traceEnabled_; |
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274 std::string targetFile_; |
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275 std::string targetFolder_; |
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276 |
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277 std::ostream* error_; |
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278 std::ostream* warning_; |
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279 std::ostream* info_; |
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280 |
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281 std::auto_ptr<std::ofstream> file_; |
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282 |
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283 LoggingContext() : |
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284 infoEnabled_(false), |
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285 traceEnabled_(false), |
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286 error_(&std::cerr), |
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287 warning_(&std::cerr), |
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288 info_(&std::cerr) |
1489 | 289 { |
290 } | |
291 }; | |
292 } | |
293 | |
294 | |
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295 |
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296 static std::auto_ptr<LoggingContext> loggingContext_; |
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297 static boost::mutex loggingMutex_; |
1489 | 298 |
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299 |
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300 |
1489 | 301 namespace Orthanc |
302 { | |
303 namespace Logging | |
304 { | |
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305 static void GetLogPath(boost::filesystem::path& log, |
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306 boost::filesystem::path& link, |
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307 const std::string& suffix, |
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308 const std::string& directory) |
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309 { |
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310 /** |
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311 From Google Log documentation: |
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312 |
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313 Unless otherwise specified, logs will be written to the filename |
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314 "<program name>.<hostname>.<user name>.log<suffix>.", |
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315 followed by the date, time, and pid (you can't prevent the date, |
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316 time, and pid from being in the filename). |
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317 |
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318 In this implementation : "hostname" and "username" are not used |
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319 **/ |
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320 |
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321 boost::posix_time::ptime now = boost::posix_time::second_clock::local_time(); |
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322 boost::filesystem::path root(directory); |
2140 | 323 boost::filesystem::path exe(SystemToolbox::GetPathToExecutable()); |
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324 |
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325 if (!boost::filesystem::exists(root) || |
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326 !boost::filesystem::is_directory(root)) |
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327 { |
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328 throw OrthancException(ErrorCode_CannotWriteFile); |
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329 } |
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330 |
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331 char date[64]; |
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332 sprintf(date, "%04d%02d%02d-%02d%02d%02d.%d", |
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333 static_cast<int>(now.date().year()), |
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334 now.date().month().as_number(), |
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335 now.date().day().as_number(), |
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336 static_cast<int>(now.time_of_day().hours()), |
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337 static_cast<int>(now.time_of_day().minutes()), |
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338 static_cast<int>(now.time_of_day().seconds()), |
2140 | 339 SystemToolbox::GetProcessId()); |
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340 |
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341 std::string programName = exe.filename().replace_extension("").string(); |
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342 |
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343 log = (root / (programName + ".log" + suffix + "." + std::string(date))); |
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344 link = (root / (programName + ".log" + suffix)); |
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345 } |
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346 |
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347 |
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348 static void PrepareLogFolder(std::auto_ptr<std::ofstream>& file, |
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349 const std::string& suffix, |
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350 const std::string& directory) |
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351 { |
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352 boost::filesystem::path log, link; |
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353 GetLogPath(log, link, suffix, directory); |
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354 |
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355 #if !defined(_WIN32) && (defined(__unix__) || defined(__unix) || (defined(__APPLE__) && defined(__MACH__))) |
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356 boost::filesystem::remove(link); |
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357 boost::filesystem::create_symlink(log.filename(), link); |
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358 #endif |
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359 |
1494 | 360 file.reset(new std::ofstream(log.string().c_str())); |
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361 } |
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362 |
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363 |
1489 | 364 void Initialize() |
365 { | |
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366 boost::mutex::scoped_lock lock(loggingMutex_); |
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367 loggingContext_.reset(new LoggingContext); |
1489 | 368 } |
369 | |
370 void Finalize() | |
371 { | |
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372 boost::mutex::scoped_lock lock(loggingMutex_); |
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373 loggingContext_.reset(NULL); |
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374 } |
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375 |
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376 void Reset() |
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377 { |
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378 // Recover the old logging context |
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379 std::auto_ptr<LoggingContext> old; |
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380 |
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381 { |
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382 boost::mutex::scoped_lock lock(loggingMutex_); |
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383 if (loggingContext_.get() == NULL) |
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384 { |
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385 return; |
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386 } |
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387 else |
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388 { |
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389 old = loggingContext_; |
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390 |
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391 // Create a new logging context, |
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392 loggingContext_.reset(new LoggingContext); |
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393 } |
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394 } |
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395 |
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396 EnableInfoLevel(old->infoEnabled_); |
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397 EnableTraceLevel(old->traceEnabled_); |
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398 |
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399 if (!old->targetFolder_.empty()) |
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400 { |
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401 SetTargetFolder(old->targetFolder_); |
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402 } |
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403 else if (!old->targetFile_.empty()) |
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404 { |
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405 SetTargetFile(old->targetFile_); |
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406 } |
1489 | 407 } |
408 | |
409 void EnableInfoLevel(bool enabled) | |
410 { | |
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411 boost::mutex::scoped_lock lock(loggingMutex_); |
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412 assert(loggingContext_.get() != NULL); |
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413 |
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414 loggingContext_->infoEnabled_ = enabled; |
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415 |
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416 if (!enabled) |
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417 { |
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418 // Also disable the "TRACE" level when info-level debugging is disabled |
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419 loggingContext_->traceEnabled_ = false; |
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420 } |
1489 | 421 } |
422 | |
423 void EnableTraceLevel(bool enabled) | |
424 { | |
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425 boost::mutex::scoped_lock lock(loggingMutex_); |
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426 assert(loggingContext_.get() != NULL); |
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427 |
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428 loggingContext_->traceEnabled_ = enabled; |
1489 | 429 |
430 if (enabled) | |
431 { | |
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432 // Also enable the "INFO" level when trace-level debugging is enabled |
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433 loggingContext_->infoEnabled_ = true; |
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434 } |
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435 } |
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436 |
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437 |
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438 static void CheckFile(std::auto_ptr<std::ofstream>& f) |
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439 { |
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440 if (loggingContext_->file_.get() == NULL || |
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441 !loggingContext_->file_->is_open()) |
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442 { |
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443 throw OrthancException(ErrorCode_CannotWriteFile); |
1489 | 444 } |
445 } | |
446 | |
447 void SetTargetFolder(const std::string& path) | |
448 { | |
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449 boost::mutex::scoped_lock lock(loggingMutex_); |
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450 assert(loggingContext_.get() != NULL); |
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451 |
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452 PrepareLogFolder(loggingContext_->file_, "" /* no suffix */, path); |
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453 CheckFile(loggingContext_->file_); |
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454 |
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455 loggingContext_->targetFile_.clear(); |
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456 loggingContext_->targetFolder_ = path; |
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457 loggingContext_->warning_ = loggingContext_->file_.get(); |
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458 loggingContext_->error_ = loggingContext_->file_.get(); |
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459 loggingContext_->info_ = loggingContext_->file_.get(); |
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460 } |
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461 |
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462 |
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463 void SetTargetFile(const std::string& path) |
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464 { |
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465 boost::mutex::scoped_lock lock(loggingMutex_); |
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466 assert(loggingContext_.get() != NULL); |
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467 |
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468 loggingContext_->file_.reset(new std::ofstream(path.c_str(), std::fstream::app)); |
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469 CheckFile(loggingContext_->file_); |
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470 |
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471 loggingContext_->targetFile_ = path; |
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472 loggingContext_->targetFolder_.clear(); |
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473 loggingContext_->warning_ = loggingContext_->file_.get(); |
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474 loggingContext_->error_ = loggingContext_->file_.get(); |
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475 loggingContext_->info_ = loggingContext_->file_.get(); |
1489 | 476 } |
477 | |
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478 |
1489 | 479 InternalLogger::InternalLogger(const char* level, |
480 const char* file, | |
481 int line) : | |
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482 lock_(loggingMutex_), |
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483 stream_(&null_) // By default, logging to "/dev/null" is simulated |
1489 | 484 { |
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485 if (loggingContext_.get() == NULL) |
1489 | 486 { |
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487 fprintf(stderr, "ERROR: Trying to log a message after the finalization of the logging engine\n"); |
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488 return; |
1489 | 489 } |
490 | |
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491 try |
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492 { |
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493 LogLevel l = StringToLogLevel(level); |
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494 |
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495 if ((l == LogLevel_Info && !loggingContext_->infoEnabled_) || |
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496 (l == LogLevel_Trace && !loggingContext_->traceEnabled_)) |
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497 { |
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498 // This logging level is disabled, directly exit and unlock |
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499 // the mutex to speed-up things. The stream is set to "/dev/null" |
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500 lock_.unlock(); |
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501 return; |
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502 } |
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503 |
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504 // Compute the header of the line, temporary release the lock as |
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505 // this is a time-consuming operation |
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506 lock_.unlock(); |
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507 std::string header; |
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508 |
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509 { |
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510 boost::filesystem::path path(file); |
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511 boost::posix_time::ptime now = boost::posix_time::microsec_clock::local_time(); |
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512 boost::posix_time::time_duration duration = now.time_of_day(); |
1489 | 513 |
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514 /** |
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515 From Google Log documentation: |
1489 | 516 |
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517 "Log lines have this form: |
1489 | 518 |
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519 Lmmdd hh:mm:ss.uuuuuu threadid file:line] msg... |
1489 | 520 |
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521 where the fields are defined as follows: |
1489 | 522 |
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523 L A single character, representing the log level (eg 'I' for INFO) |
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524 mm The month (zero padded; ie May is '05') |
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525 dd The day (zero padded) |
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526 hh:mm:ss.uuuuuu Time in hours, minutes and fractional seconds |
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527 threadid The space-padded thread ID as returned by GetTID() (this matches the PID on Linux) |
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528 file The file name |
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529 line The line number |
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530 msg The user-supplied message" |
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531 |
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532 In this implementation, "threadid" is not printed. |
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533 **/ |
1489 | 534 |
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535 char date[32]; |
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536 sprintf(date, "%c%02d%02d %02d:%02d:%02d.%06d ", |
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537 level[0], |
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538 now.date().month().as_number(), |
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539 now.date().day().as_number(), |
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540 static_cast<int>(duration.hours()), |
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541 static_cast<int>(duration.minutes()), |
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542 static_cast<int>(duration.seconds()), |
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543 static_cast<int>(duration.fractional_seconds())); |
1489 | 544 |
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545 header = std::string(date) + path.filename().string() + ":" + boost::lexical_cast<std::string>(line) + "] "; |
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546 } |
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547 |
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548 |
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549 // The header is computed, we now re-lock the mutex to access |
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550 // the stream objects. Pay attention that "loggingContext_", |
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551 // "infoEnabled_" or "traceEnabled_" might have changed while |
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552 // the mutex was unlocked. |
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553 lock_.lock(); |
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554 |
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555 if (loggingContext_.get() == NULL) |
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556 { |
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557 fprintf(stderr, "ERROR: Trying to log a message after the finalization of the logging engine\n"); |
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558 return; |
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559 } |
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560 |
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561 switch (l) |
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562 { |
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563 case LogLevel_Error: |
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564 stream_ = loggingContext_->error_; |
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565 break; |
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566 |
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567 case LogLevel_Warning: |
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568 stream_ = loggingContext_->warning_; |
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569 break; |
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570 |
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571 case LogLevel_Info: |
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572 if (loggingContext_->infoEnabled_) |
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573 { |
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574 stream_ = loggingContext_->info_; |
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575 } |
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576 |
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577 break; |
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578 |
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579 case LogLevel_Trace: |
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580 if (loggingContext_->traceEnabled_) |
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581 { |
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582 stream_ = loggingContext_->info_; |
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583 } |
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584 |
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585 break; |
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586 |
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587 default: |
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588 throw OrthancException(ErrorCode_InternalError); |
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589 } |
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590 |
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591 if (stream_ == &null_) |
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592 { |
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593 // The logging is disabled for this level. The stream is the |
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594 // "null_" member of this object, so we can release the global |
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595 // mutex. |
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596 lock_.unlock(); |
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597 } |
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598 |
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599 (*stream_) << header; |
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600 } |
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601 catch (...) |
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602 { |
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603 // Something is going really wrong, probably running out of |
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604 // memory. Fallback to a degraded mode. |
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605 stream_ = loggingContext_->error_; |
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606 (*stream_) << "E???? ??:??:??.?????? ] "; |
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607 } |
1489 | 608 } |
1507 | 609 |
610 | |
611 InternalLogger::~InternalLogger() | |
612 { | |
613 if (stream_ != &null_) | |
614 { | |
615 #if defined(_WIN32) | |
616 *stream_ << "\r\n"; | |
617 #else | |
618 *stream_ << "\n"; | |
619 #endif | |
620 | |
621 stream_->flush(); | |
622 } | |
623 } | |
624 | |
625 | |
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626 void Flush() |
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627 { |
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628 boost::mutex::scoped_lock lock(loggingMutex_); |
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629 |
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630 if (loggingContext_.get() != NULL && |
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631 loggingContext_->file_.get() != NULL) |
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632 { |
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633 loggingContext_->file_->flush(); |
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634 } |
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635 } |
1485 | 636 } |
637 } | |
1488 | 638 |
1489 | 639 #endif // ORTHANC_ENABLE_LOGGING |