Mercurial > hg > orthanc
annotate Core/MetricsRegistry.cpp @ 3777:4e680e0e46c4
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 18 Mar 2020 11:14:59 +0100 |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU General Public License as |
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9 * published by the Free Software Foundation, either version 3 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * In addition, as a special exception, the copyright holders of this |
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13 * program give permission to link the code of its release with the |
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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15 * that use the same license as the "OpenSSL" library), and distribute |
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16 * the linked executables. You must obey the GNU General Public License |
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17 * in all respects for all of the code used other than "OpenSSL". If you |
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18 * modify file(s) with this exception, you may extend this exception to |
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19 * your version of the file(s), but you are not obligated to do so. If |
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20 * you do not wish to do so, delete this exception statement from your |
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21 * version. If you delete this exception statement from all source files |
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22 * in the program, then also delete it here. |
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23 * |
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24 * This program is distributed in the hope that it will be useful, but |
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU General Public License |
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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31 **/ |
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32 |
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33 |
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34 #include "PrecompiledHeaders.h" |
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35 #include "MetricsRegistry.h" |
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36 |
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37 #include "ChunkedBuffer.h" |
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38 #include "Compatibility.h" |
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39 #include "OrthancException.h" |
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40 |
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41 namespace Orthanc |
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42 { |
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43 static const boost::posix_time::ptime GetNow() |
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44 { |
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45 return boost::posix_time::microsec_clock::universal_time(); |
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46 } |
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47 |
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48 class MetricsRegistry::Item |
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49 { |
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50 private: |
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51 MetricsType type_; |
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52 boost::posix_time::ptime time_; |
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53 bool hasValue_; |
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54 float value_; |
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55 |
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56 void Touch(float value, |
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57 const boost::posix_time::ptime& now) |
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58 { |
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59 hasValue_ = true; |
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60 value_ = value; |
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61 time_ = now; |
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62 } |
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63 |
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64 void Touch(float value) |
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65 { |
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66 Touch(value, GetNow()); |
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67 } |
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68 |
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69 void UpdateMax(float value, |
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70 int duration) |
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71 { |
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72 if (hasValue_) |
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73 { |
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74 const boost::posix_time::ptime now = GetNow(); |
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75 |
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76 if (value > value_ || |
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77 (now - time_).total_seconds() > duration) |
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78 { |
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79 Touch(value, now); |
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80 } |
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81 } |
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82 else |
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83 { |
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84 Touch(value); |
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85 } |
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86 } |
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87 |
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88 void UpdateMin(float value, |
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89 int duration) |
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90 { |
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91 if (hasValue_) |
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92 { |
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93 const boost::posix_time::ptime now = GetNow(); |
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94 |
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95 if (value < value_ || |
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96 (now - time_).total_seconds() > duration) |
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97 { |
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98 Touch(value, now); |
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99 } |
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100 } |
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101 else |
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102 { |
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103 Touch(value); |
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104 } |
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105 } |
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106 |
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107 public: |
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108 Item(MetricsType type) : |
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109 type_(type), |
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110 hasValue_(false) |
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111 { |
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112 } |
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113 |
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114 MetricsType GetType() const |
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115 { |
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116 return type_; |
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117 } |
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118 |
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119 void Update(float value) |
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120 { |
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121 switch (type_) |
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122 { |
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123 case MetricsType_Default: |
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124 Touch(value); |
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125 break; |
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126 |
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127 case MetricsType_MaxOver10Seconds: |
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128 UpdateMax(value, 10); |
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129 break; |
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130 |
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131 case MetricsType_MaxOver1Minute: |
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132 UpdateMax(value, 60); |
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133 break; |
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134 |
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135 case MetricsType_MinOver10Seconds: |
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136 UpdateMin(value, 10); |
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137 break; |
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138 |
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139 case MetricsType_MinOver1Minute: |
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140 UpdateMin(value, 60); |
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141 break; |
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142 |
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143 default: |
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144 throw OrthancException(ErrorCode_NotImplemented); |
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145 } |
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146 } |
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147 |
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148 bool HasValue() const |
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149 { |
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150 return hasValue_; |
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151 } |
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152 |
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153 const boost::posix_time::ptime& GetTime() const |
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154 { |
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155 if (hasValue_) |
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156 { |
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157 return time_; |
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158 } |
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159 else |
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160 { |
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161 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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162 } |
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163 } |
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164 |
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165 float GetValue() const |
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166 { |
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167 if (hasValue_) |
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168 { |
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169 return value_; |
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170 } |
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171 else |
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172 { |
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173 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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174 } |
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175 } |
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176 }; |
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177 |
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178 |
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179 MetricsRegistry::~MetricsRegistry() |
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180 { |
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181 for (Content::iterator it = content_.begin(); it != content_.end(); ++it) |
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182 { |
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183 assert(it->second != NULL); |
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184 delete it->second; |
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185 } |
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186 } |
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187 |
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188 |
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189 void MetricsRegistry::SetEnabled(bool enabled) |
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190 { |
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191 boost::mutex::scoped_lock lock(mutex_); |
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192 enabled_ = enabled; |
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193 } |
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194 |
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195 |
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196 void MetricsRegistry::Register(const std::string& name, |
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197 MetricsType type) |
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198 { |
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199 boost::mutex::scoped_lock lock(mutex_); |
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200 |
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201 Content::iterator found = content_.find(name); |
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202 |
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203 if (found == content_.end()) |
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204 { |
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205 content_[name] = new Item(type); |
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206 } |
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207 else |
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208 { |
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209 assert(found->second != NULL); |
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210 |
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211 // This metrics already exists: Only recreate it if there is a |
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212 // mismatch in the type of metrics |
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213 if (found->second->GetType() != type) |
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214 { |
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215 delete found->second; |
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216 found->second = new Item(type); |
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217 } |
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218 } |
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219 } |
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220 |
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221 |
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222 void MetricsRegistry::SetValueInternal(const std::string& name, |
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223 float value, |
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224 MetricsType type) |
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225 { |
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226 boost::mutex::scoped_lock lock(mutex_); |
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227 |
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228 Content::iterator found = content_.find(name); |
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229 |
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230 if (found == content_.end()) |
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231 { |
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232 std::unique_ptr<Item> item(new Item(type)); |
3174
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233 item->Update(value); |
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234 content_[name] = item.release(); |
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235 } |
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236 else |
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237 { |
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238 assert(found->second != NULL); |
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239 found->second->Update(value); |
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240 } |
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241 } |
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242 |
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243 |
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244 MetricsType MetricsRegistry::GetMetricsType(const std::string& name) |
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245 { |
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246 boost::mutex::scoped_lock lock(mutex_); |
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247 |
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248 Content::const_iterator found = content_.find(name); |
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249 |
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250 if (found == content_.end()) |
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251 { |
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252 throw OrthancException(ErrorCode_InexistentItem); |
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253 } |
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254 else |
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255 { |
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256 assert(found->second != NULL); |
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257 return found->second->GetType(); |
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258 } |
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259 } |
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260 |
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261 |
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262 void MetricsRegistry::ExportPrometheusText(std::string& s) |
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263 { |
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264 // https://www.boost.org/doc/libs/1_69_0/doc/html/date_time/examples.html#date_time.examples.seconds_since_epoch |
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265 static const boost::posix_time::ptime EPOCH(boost::gregorian::date(1970, 1, 1)); |
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266 |
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267 boost::mutex::scoped_lock lock(mutex_); |
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268 |
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269 s.clear(); |
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270 |
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271 if (!enabled_) |
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272 { |
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273 return; |
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274 } |
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275 |
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276 ChunkedBuffer buffer; |
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277 |
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278 for (Content::const_iterator it = content_.begin(); |
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279 it != content_.end(); ++it) |
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280 { |
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281 assert(it->second != NULL); |
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282 |
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283 if (it->second->HasValue()) |
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284 { |
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285 boost::posix_time::time_duration diff = it->second->GetTime() - EPOCH; |
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286 |
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287 std::string line = (it->first + " " + |
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288 boost::lexical_cast<std::string>(it->second->GetValue()) + " " + |
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289 boost::lexical_cast<std::string>(diff.total_milliseconds()) + "\n"); |
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290 |
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291 buffer.AddChunk(line); |
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292 } |
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293 } |
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294 |
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295 buffer.Flatten(s); |
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296 } |
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297 |
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298 |
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299 void MetricsRegistry::SharedMetrics::Add(float delta) |
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300 { |
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301 boost::mutex::scoped_lock lock(mutex_); |
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302 value_ += delta; |
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303 registry_.SetValue(name_, value_); |
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304 } |
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305 |
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306 |
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307 void MetricsRegistry::Timer::Start() |
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308 { |
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309 if (registry_.IsEnabled()) |
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310 { |
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311 active_ = true; |
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312 start_ = GetNow(); |
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313 } |
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314 else |
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315 { |
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316 active_ = false; |
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317 } |
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318 } |
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319 |
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320 |
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321 MetricsRegistry::Timer::~Timer() |
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322 { |
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323 if (active_) |
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324 { |
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325 boost::posix_time::time_duration diff = GetNow() - start_; |
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326 registry_.SetValue( |
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327 name_, static_cast<float>(diff.total_milliseconds()), type_); |
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328 } |
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329 } |
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330 } |