Mercurial > hg > orthanc
annotate OrthancFramework/Sources/MetricsRegistry.cpp @ 5113:a3c3f13368ea
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 23 Nov 2022 14:28:50 +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) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
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7 * |
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8 * This program is free software: you can redistribute it and/or |
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9 * modify it under the terms of the GNU Lesser General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
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12 * |
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13 * This program is distributed in the hope that it will be useful, but |
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14 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
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21 **/ |
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22 |
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23 |
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24 #include "PrecompiledHeaders.h" |
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25 #include "MetricsRegistry.h" |
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26 |
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27 #include "ChunkedBuffer.h" |
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28 #include "Compatibility.h" |
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29 #include "OrthancException.h" |
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30 |
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31 namespace Orthanc |
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32 { |
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33 static const boost::posix_time::ptime GetNow() |
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34 { |
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35 return boost::posix_time::microsec_clock::universal_time(); |
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36 } |
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37 |
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38 class MetricsRegistry::Item |
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39 { |
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40 private: |
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41 MetricsType type_; |
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42 boost::posix_time::ptime time_; |
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43 bool hasValue_; |
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44 float value_; |
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45 |
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46 void Touch(float value, |
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47 const boost::posix_time::ptime& now) |
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48 { |
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49 hasValue_ = true; |
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50 value_ = value; |
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51 time_ = now; |
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52 } |
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53 |
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54 void Touch(float value) |
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55 { |
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56 Touch(value, GetNow()); |
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57 } |
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58 |
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59 void UpdateMax(float value, |
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60 int duration) |
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61 { |
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62 if (hasValue_) |
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63 { |
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64 const boost::posix_time::ptime now = GetNow(); |
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65 |
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66 if (value > value_ || |
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67 (now - time_).total_seconds() > duration) |
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68 { |
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69 Touch(value, now); |
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70 } |
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71 } |
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72 else |
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73 { |
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74 Touch(value); |
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75 } |
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76 } |
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77 |
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78 void UpdateMin(float value, |
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79 int duration) |
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80 { |
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81 if (hasValue_) |
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82 { |
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83 const boost::posix_time::ptime now = GetNow(); |
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84 |
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85 if (value < value_ || |
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86 (now - time_).total_seconds() > duration) |
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87 { |
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88 Touch(value, now); |
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89 } |
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90 } |
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91 else |
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92 { |
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93 Touch(value); |
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94 } |
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95 } |
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96 |
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97 public: |
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98 explicit Item(MetricsType type) : |
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99 type_(type), |
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100 hasValue_(false), |
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101 value_(0) |
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102 { |
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103 } |
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104 |
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105 MetricsType GetType() const |
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106 { |
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107 return type_; |
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108 } |
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109 |
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110 void Update(float value) |
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111 { |
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112 switch (type_) |
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113 { |
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114 case MetricsType_Default: |
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115 Touch(value); |
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116 break; |
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117 |
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118 case MetricsType_MaxOver10Seconds: |
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119 UpdateMax(value, 10); |
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120 break; |
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121 |
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122 case MetricsType_MaxOver1Minute: |
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123 UpdateMax(value, 60); |
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124 break; |
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125 |
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126 case MetricsType_MinOver10Seconds: |
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127 UpdateMin(value, 10); |
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128 break; |
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129 |
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130 case MetricsType_MinOver1Minute: |
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131 UpdateMin(value, 60); |
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132 break; |
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133 |
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134 default: |
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135 throw OrthancException(ErrorCode_NotImplemented); |
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136 } |
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137 } |
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138 |
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139 bool HasValue() const |
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140 { |
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141 return hasValue_; |
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142 } |
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143 |
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144 const boost::posix_time::ptime& GetTime() const |
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145 { |
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146 if (hasValue_) |
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147 { |
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148 return time_; |
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149 } |
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150 else |
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151 { |
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152 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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153 } |
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154 } |
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155 |
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156 float GetValue() const |
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157 { |
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158 if (hasValue_) |
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159 { |
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160 return value_; |
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161 } |
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162 else |
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163 { |
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164 throw OrthancException(ErrorCode_BadSequenceOfCalls); |
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165 } |
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166 } |
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167 }; |
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168 |
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169 |
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170 MetricsRegistry::~MetricsRegistry() |
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171 { |
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172 for (Content::iterator it = content_.begin(); it != content_.end(); ++it) |
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173 { |
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174 assert(it->second != NULL); |
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175 delete it->second; |
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176 } |
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177 } |
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178 |
4300 | 179 bool MetricsRegistry::IsEnabled() const |
180 { | |
181 return enabled_; | |
182 } | |
183 | |
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184 |
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185 void MetricsRegistry::SetEnabled(bool enabled) |
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186 { |
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187 boost::mutex::scoped_lock lock(mutex_); |
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188 enabled_ = enabled; |
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189 } |
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190 |
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191 |
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192 void MetricsRegistry::Register(const std::string& name, |
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193 MetricsType type) |
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194 { |
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195 boost::mutex::scoped_lock lock(mutex_); |
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196 |
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197 Content::iterator found = content_.find(name); |
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198 |
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199 if (found == content_.end()) |
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200 { |
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201 content_[name] = new Item(type); |
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202 } |
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203 else |
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204 { |
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205 assert(found->second != NULL); |
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206 |
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207 // This metrics already exists: Only recreate it if there is a |
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208 // mismatch in the type of metrics |
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209 if (found->second->GetType() != type) |
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210 { |
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211 delete found->second; |
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212 found->second = new Item(type); |
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213 } |
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214 } |
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215 } |
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216 |
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217 void MetricsRegistry::SetValueInternal(const std::string& name, |
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218 float value, |
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219 MetricsType type) |
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220 { |
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221 boost::mutex::scoped_lock lock(mutex_); |
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222 |
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223 Content::iterator found = content_.find(name); |
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224 |
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225 if (found == content_.end()) |
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226 { |
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227 std::unique_ptr<Item> item(new Item(type)); |
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228 item->Update(value); |
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229 content_[name] = item.release(); |
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230 } |
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231 else |
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232 { |
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233 assert(found->second != NULL); |
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234 found->second->Update(value); |
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235 } |
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236 } |
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237 |
4300 | 238 MetricsRegistry::MetricsRegistry() : |
239 enabled_(true) | |
240 { | |
241 } | |
242 | |
243 | |
244 void MetricsRegistry::SetValue(const std::string &name, | |
245 float value, | |
246 MetricsType type) | |
247 { | |
248 // Inlining to avoid loosing time if metrics are disabled | |
249 if (enabled_) | |
250 { | |
251 SetValueInternal(name, value, type); | |
252 } | |
253 } | |
254 | |
255 | |
256 void MetricsRegistry::SetValue(const std::string &name, float value) | |
257 { | |
258 SetValue(name, value, MetricsType_Default); | |
259 } | |
260 | |
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261 |
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262 MetricsType MetricsRegistry::GetMetricsType(const std::string& name) |
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263 { |
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264 boost::mutex::scoped_lock lock(mutex_); |
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265 |
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266 Content::const_iterator found = content_.find(name); |
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267 |
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268 if (found == content_.end()) |
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269 { |
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270 throw OrthancException(ErrorCode_InexistentItem); |
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271 } |
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272 else |
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273 { |
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274 assert(found->second != NULL); |
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275 return found->second->GetType(); |
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276 } |
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277 } |
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278 |
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279 |
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280 void MetricsRegistry::ExportPrometheusText(std::string& s) |
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281 { |
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282 // 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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283 static const boost::posix_time::ptime EPOCH(boost::gregorian::date(1970, 1, 1)); |
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284 |
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285 boost::mutex::scoped_lock lock(mutex_); |
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286 |
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287 s.clear(); |
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288 |
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289 if (!enabled_) |
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290 { |
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291 return; |
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292 } |
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293 |
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294 ChunkedBuffer buffer; |
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295 |
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296 for (Content::const_iterator it = content_.begin(); |
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297 it != content_.end(); ++it) |
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298 { |
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299 assert(it->second != NULL); |
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300 |
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301 if (it->second->HasValue()) |
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302 { |
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303 boost::posix_time::time_duration diff = it->second->GetTime() - EPOCH; |
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304 |
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305 std::string line = (it->first + " " + |
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306 boost::lexical_cast<std::string>(it->second->GetValue()) + " " + |
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307 boost::lexical_cast<std::string>(diff.total_milliseconds()) + "\n"); |
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308 |
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309 buffer.AddChunk(line); |
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310 } |
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311 } |
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312 |
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313 buffer.Flatten(s); |
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314 } |
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315 |
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316 |
4300 | 317 MetricsRegistry::SharedMetrics::SharedMetrics(MetricsRegistry ®istry, |
318 const std::string &name, | |
319 MetricsType type) : | |
320 registry_(registry), | |
321 name_(name), | |
322 value_(0) | |
323 { | |
324 } | |
325 | |
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326 void MetricsRegistry::SharedMetrics::Add(float delta) |
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327 { |
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328 boost::mutex::scoped_lock lock(mutex_); |
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329 value_ += delta; |
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330 registry_.SetValue(name_, value_); |
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331 } |
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332 |
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333 |
4300 | 334 MetricsRegistry::ActiveCounter::ActiveCounter(MetricsRegistry::SharedMetrics &metrics) : |
335 metrics_(metrics) | |
336 { | |
337 metrics_.Add(1); | |
338 } | |
339 | |
340 MetricsRegistry::ActiveCounter::~ActiveCounter() | |
341 { | |
342 metrics_.Add(-1); | |
343 } | |
344 | |
345 | |
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346 void MetricsRegistry::Timer::Start() |
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347 { |
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348 if (registry_.IsEnabled()) |
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349 { |
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350 active_ = true; |
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351 start_ = GetNow(); |
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352 } |
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353 else |
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354 { |
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355 active_ = false; |
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356 } |
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357 } |
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358 |
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359 |
4300 | 360 MetricsRegistry::Timer::Timer(MetricsRegistry ®istry, |
361 const std::string &name) : | |
362 registry_(registry), | |
363 name_(name), | |
364 type_(MetricsType_MaxOver10Seconds) | |
365 { | |
366 Start(); | |
367 } | |
368 | |
369 | |
370 MetricsRegistry::Timer::Timer(MetricsRegistry ®istry, | |
371 const std::string &name, | |
372 MetricsType type) : | |
373 registry_(registry), | |
374 name_(name), | |
375 type_(type) | |
376 { | |
377 Start(); | |
378 } | |
379 | |
380 | |
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381 MetricsRegistry::Timer::~Timer() |
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382 { |
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383 if (active_) |
4300 | 384 { |
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385 boost::posix_time::time_duration diff = GetNow() - start_; |
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386 registry_.SetValue( |
4300 | 387 name_, static_cast<float>(diff.total_milliseconds()), type_); |
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388 } |
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389 } |
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390 } |