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annotate OrthancFramework/Sources/MetricsRegistry.h @ 5765:247fc5368693 find-refactoring

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un-sharing DatabaseConstraint and ISqlLookupFormatter with orthanc-databases
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 09 Sep 2024 16:14:22 +0200
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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) 2017-2023 Osimis S.A., Belgium
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
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8 *
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9 * This program is free software: you can redistribute it and/or
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10 * modify it under the terms of the GNU Lesser General Public License
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11 * as published by the Free Software Foundation, either version 3 of
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12 * the License, or (at your option) any later version.
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13 *
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14 * This program is distributed in the hope that it will be useful, but
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15 * WITHOUT ANY WARRANTY; without even the implied warranty of
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16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 * Lesser General Public License for more details.
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18 *
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19 * You should have received a copy of the GNU Lesser General Public
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20 * License along with this program. If not, see
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21 * <http://www.gnu.org/licenses/>.
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22 **/
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24
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25 #pragma once
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26
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27 #include "OrthancFramework.h"
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28
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29 #if !defined(ORTHANC_SANDBOXED)
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30 # error The macro ORTHANC_SANDBOXED must be defined
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31 #endif
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32
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33 #if ORTHANC_SANDBOXED == 1
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34 # error The class MetricsRegistry cannot be used in sandboxed environments
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35 #endif
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36
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37 #include <boost/thread/mutex.hpp>
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38 #include <boost/date_time/posix_time/posix_time.hpp>
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39 #include <stdint.h>
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41 namespace Orthanc
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42 {
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43 enum MetricsUpdatePolicy
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44 {
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45 MetricsUpdatePolicy_Directly,
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46 MetricsUpdatePolicy_MaxOver10Seconds,
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47 MetricsUpdatePolicy_MaxOver1Minute,
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48 MetricsUpdatePolicy_MinOver10Seconds,
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49 MetricsUpdatePolicy_MinOver1Minute
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50 };
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51
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52 enum MetricsDataType
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53 {
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54 MetricsDataType_Float,
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55 MetricsDataType_Integer
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56 };
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57
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58 class ORTHANC_PUBLIC MetricsRegistry : public boost::noncopyable
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59 {
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60 private:
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61 class Item;
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62 class FloatItem;
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63 class IntegerItem;
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64
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65 typedef std::map<std::string, Item*> Content;
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66
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67 bool enabled_;
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68 boost::mutex mutex_;
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69 Content content_;
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70
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71 // The mutex must be locked
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72 Item& GetItemInternal(const std::string& name,
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73 MetricsUpdatePolicy policy,
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74 MetricsDataType type);
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75
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76 public:
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77 MetricsRegistry();
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78
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79 ~MetricsRegistry();
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80
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81 bool IsEnabled() const;
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82
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83 void SetEnabled(bool enabled);
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84
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85 void Register(const std::string& name,
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86 MetricsUpdatePolicy policy,
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87 MetricsDataType type);
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88
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89 void SetFloatValue(const std::string& name,
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90 float value,
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91 MetricsUpdatePolicy policy /* only used if this is a new metrics */);
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92
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93 void SetFloatValue(const std::string& name,
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94 float value)
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95 {
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96 SetFloatValue(name, value, MetricsUpdatePolicy_Directly);
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97 }
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98
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99 void SetIntegerValue(const std::string& name,
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100 int64_t value,
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101 MetricsUpdatePolicy policy /* only used if this is a new metrics */);
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102
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103 void SetIntegerValue(const std::string& name,
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104 int64_t value)
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105 {
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106 SetIntegerValue(name, value, MetricsUpdatePolicy_Directly);
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107 }
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108
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109 void IncrementIntegerValue(const std::string& name,
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110 int64_t delta);
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111
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112 MetricsUpdatePolicy GetUpdatePolicy(const std::string& metrics);
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113
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114 MetricsDataType GetDataType(const std::string& metrics);
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115
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116 // https://prometheus.io/docs/instrumenting/exposition_formats/#text-based-format
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117 void ExportPrometheusText(std::string& s);
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118
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119
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120 class ORTHANC_PUBLIC SharedMetrics : public boost::noncopyable
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121 {
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122 private:
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123 boost::mutex mutex_;
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124 MetricsRegistry& registry_;
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125 std::string name_;
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126 int64_t value_;
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127
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128 public:
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129 SharedMetrics(MetricsRegistry& registry,
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130 const std::string& name,
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131 MetricsUpdatePolicy policy);
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132
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133 void Add(int64_t delta);
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134 };
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135
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136
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137 class ORTHANC_PUBLIC ActiveCounter : public boost::noncopyable
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138 {
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139 private:
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140 SharedMetrics& metrics_;
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141
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142 public:
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143 explicit ActiveCounter(SharedMetrics& metrics);
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144
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145 ~ActiveCounter();
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146 };
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147
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148
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149 class ORTHANC_PUBLIC Timer : public boost::noncopyable
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150 {
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151 private:
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152 MetricsRegistry& registry_;
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153 std::string name_;
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154 MetricsUpdatePolicy policy_;
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155 bool active_;
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156 boost::posix_time::ptime start_;
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157
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158 void Start();
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159
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160 public:
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161 Timer(MetricsRegistry& registry,
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162 const std::string& name);
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163
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164 Timer(MetricsRegistry& registry,
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165 const std::string& name,
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166 MetricsUpdatePolicy policy);
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167
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168 ~Timer();
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169 };
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170 };
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171 }