Mercurial > hg > orthanc-stone

annotate Framework/Deprecated/Toolbox/BaseWebService.cpp @ 1510:1005c1cbe4dd

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fix
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 07 Jul 2020 09:45:27 +0200
parents 30deba7bc8e2
children
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1 /**
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2 * Stone of Orthanc
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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 Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "BaseWebService.h"
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23
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24 #include "../../Messages/IObservable.h"
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25 #include "../../../Platforms/Generic/IOracleCommand.h"
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26
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27 #include <OrthancException.h>
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28
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29 #include <boost/shared_ptr.hpp>
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30 #include <algorithm>
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31 #include <Logging.h>
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32
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33 namespace Deprecated
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34 {
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35
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36
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37 class BaseWebService::BaseWebServicePayload : public Orthanc::IDynamicObject
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38 {
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39 private:
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40 std::unique_ptr< MessageHandler<IWebService::HttpRequestSuccessMessage> > userSuccessHandler_;
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41 std::unique_ptr< MessageHandler<IWebService::HttpRequestErrorMessage> > userFailureHandler_;
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42 std::unique_ptr< Orthanc::IDynamicObject> userPayload_;
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44 public:
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45 BaseWebServicePayload(MessageHandler<IWebService::HttpRequestSuccessMessage>* userSuccessHandler,
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46 MessageHandler<IWebService::HttpRequestErrorMessage>* userFailureHandler,
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47 Orthanc::IDynamicObject* userPayload) :
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48 userSuccessHandler_(userSuccessHandler),
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49 userFailureHandler_(userFailureHandler),
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50 userPayload_(userPayload)
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51 {
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52 }
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53
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54 void HandleSuccess(const IWebService::HttpRequestSuccessMessage& message) const
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55 {
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56 if (userSuccessHandler_.get() != NULL)
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57 {
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58 // recreate a success message with the user payload
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59 IWebService::HttpRequestSuccessMessage successMessage(message.GetUri(),
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60 message.GetAnswer(),
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61 message.GetAnswerSize(),
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62 message.GetAnswerHttpHeaders(),
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63 userPayload_.get());
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64 userSuccessHandler_->Apply(successMessage);
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65 }
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66 else
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67 {
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68 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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69 }
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70 }
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71
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72 void HandleFailure(const IWebService::HttpRequestErrorMessage& message) const
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73 {
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74 if (userFailureHandler_.get() != NULL)
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75 {
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76 // recreate a failure message with the user payload
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77 IWebService::HttpRequestErrorMessage failureMessage(message.GetUri(),
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78 message.GetHttpStatus(),
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79 userPayload_.get());
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80
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81 userFailureHandler_->Apply(failureMessage);
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82 }
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83 }
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84
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85 };
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86
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87
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88 void BaseWebService::GetAsync(const std::string& uri,
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89 const HttpHeaders& headers,
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90 Orthanc::IDynamicObject* payload /* takes ownership */,
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91 MessageHandler<IWebService::HttpRequestSuccessMessage>* successCallback,
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92 MessageHandler<IWebService::HttpRequestErrorMessage>* failureCallback,
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93 unsigned int timeoutInSeconds)
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94 {
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95 if (!cacheEnabled_ || cache_.find(uri) == cache_.end())
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96 {
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97 GetAsyncInternal(uri, headers,
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98 new BaseWebService::BaseWebServicePayload(successCallback, failureCallback, payload), // ownership is transfered
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99 new DeprecatedCallable<BaseWebService, IWebService::HttpRequestSuccessMessage>
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100 (GetSharedObserver(), &BaseWebService::CacheAndNotifyHttpSuccess),
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101 new DeprecatedCallable<BaseWebService, IWebService::HttpRequestErrorMessage>
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102 (GetSharedObserver(), &BaseWebService::NotifyHttpError),
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103 timeoutInSeconds);
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104 }
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105 else
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106 {
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107 // put the uri on top of the most recently accessed list
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108 std::deque<std::string>::iterator it = std::find(orderedCacheKeys_.begin(), orderedCacheKeys_.end(), uri);
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109 if (it != orderedCacheKeys_.end())
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110 {
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111 std::string uri = *it;
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112 orderedCacheKeys_.erase(it);
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113 orderedCacheKeys_.push_front(uri);
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114 }
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115
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116 // create a command and "post" it to the Oracle so it is executed and commited "later"
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117 NotifyHttpSuccessLater(cache_[uri], payload, successCallback);
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118 }
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119
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120 }
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121
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122
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123
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124 void BaseWebService::NotifyHttpSuccess(const IWebService::HttpRequestSuccessMessage& message)
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125 {
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126 if (message.HasPayload())
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127 {
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128 dynamic_cast<const BaseWebServicePayload&>(message.GetPayload()).HandleSuccess(message);
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129 }
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130 else
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131 {
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132 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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133 }
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134 }
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135
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136 void BaseWebService::CacheAndNotifyHttpSuccess(const IWebService::HttpRequestSuccessMessage& message)
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137 {
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138 if (cacheEnabled_)
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139 {
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140 while (cacheCurrentSize_ + message.GetAnswerSize() > cacheMaxSize_ && orderedCacheKeys_.size() > 0)
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141 {
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142 VLOG(1) << "BaseWebService: clearing cache: " << cacheCurrentSize_ << "/" << cacheMaxSize_ << "(" << message.GetAnswerSize() << ")";
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143 const std::string& oldestUri = orderedCacheKeys_.back();
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144 HttpCache::iterator it = cache_.find(oldestUri);
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145 if (it != cache_.end())
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146 {
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147 cacheCurrentSize_ -= it->second->GetAnswerSize();
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148 cache_.erase(it);
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149 }
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150 orderedCacheKeys_.pop_back();
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151
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152 }
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153
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154 boost::shared_ptr<CachedHttpRequestSuccessMessage> cachedMessage(new CachedHttpRequestSuccessMessage(message));
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155 cache_[message.GetUri()] = cachedMessage;
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156 orderedCacheKeys_.push_front(message.GetUri());
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157 cacheCurrentSize_ += message.GetAnswerSize();
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158 }
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159
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160 NotifyHttpSuccess(message);
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161 }
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162
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163 void BaseWebService::NotifyHttpError(const IWebService::HttpRequestErrorMessage& message)
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164 {
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165 if (message.HasPayload())
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166 {
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167 dynamic_cast<const BaseWebServicePayload&>(message.GetPayload()).HandleFailure(message);
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168 }
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169 else
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170 {
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171 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError);
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172 }
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173 }
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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 }