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annotate Plugins/Engine/PluginsHttpHandler.cpp @ 909:ef71057d8b26 plugins

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refactoring
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 20 Jun 2014 13:30:53 +0200
parents e078ea944089
children dcb2469f00f4
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
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4 * Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32
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33 #include "PluginsHttpHandler.h"
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34
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35 #include "../../Core/OrthancException.h"
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36 #include "../../Core/Toolbox.h"
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37 #include "../../Core/HttpServer/HttpOutput.h"
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38 #include "../../Core/ImageFormats/PngWriter.h"
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39
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40 #include <boost/regex.hpp>
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41 #include <glog/logging.h>
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42
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43 namespace Orthanc
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44 {
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45 namespace
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46 {
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47 // Anonymous namespace to avoid clashes between compilation modules
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48 class StringHttpOutput : public HttpOutput
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49 {
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50 private:
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51 std::string target_;
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52
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53 public:
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54 const std::string& GetOutput() const
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55 {
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56 return target_;
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57 }
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58
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59 virtual void Send(bool isHeader, const void* buffer, size_t length)
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60 {
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61 if (isHeader)
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62 {
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63 return;
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64 }
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65
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66 size_t pos = target_.size();
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67 target_.resize(pos + length);
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68
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69 if (length > 0)
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70 {
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71 memcpy(&target_[pos], buffer, length);
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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
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79 struct PluginsHttpHandler::PImpl
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80 {
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81 typedef std::pair<boost::regex*, OrthancPluginRestCallback> Callback;
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82 typedef std::list<Callback> Callbacks;
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83
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84 ServerContext& context_;
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85 Callbacks callbacks_;
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86 OrthancRestApi* restApi_;
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87
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88 PImpl(ServerContext& context) : context_(context), restApi_(NULL)
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89 {
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90 }
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91 };
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92
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93
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94 PluginsHttpHandler::PluginsHttpHandler(ServerContext& context)
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95 {
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96 pimpl_.reset(new PImpl(context));
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97 }
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98
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99
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100 PluginsHttpHandler::~PluginsHttpHandler()
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101 {
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102 for (PImpl::Callbacks::iterator it = pimpl_->callbacks_.begin();
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103 it != pimpl_->callbacks_.end(); it++)
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104 {
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105 delete it->first;
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106 }
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107 }
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108
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109
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110 bool PluginsHttpHandler::Handle(HttpOutput& output,
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111 HttpMethod method,
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112 const UriComponents& uri,
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113 const Arguments& headers,
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114 const Arguments& getArguments,
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115 const std::string& postData)
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116 {
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117 std::string flatUri = Toolbox::FlattenUri(uri);
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118 OrthancPluginRestCallback callback = NULL;
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119
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120 std::vector<std::string> groups;
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121 std::vector<const char*> cgroups;
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122
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123 bool found = false;
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124 for (PImpl::Callbacks::const_iterator it = pimpl_->callbacks_.begin();
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125 it != pimpl_->callbacks_.end() && !found; it++)
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126 {
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127 boost::cmatch what;
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128 if (boost::regex_match(flatUri.c_str(), what, *(it->first)))
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129 {
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130 callback = it->second;
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131
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132 if (what.size() > 1)
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133 {
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134 groups.resize(what.size() - 1);
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135 cgroups.resize(what.size() - 1);
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136 for (size_t i = 1; i < what.size(); i++)
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137 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
138 groups[i - 1] = what[i];
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
139 cgroups[i - 1] = groups[i - 1].c_str();
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140 }
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parents: 900
diff changeset
141 }
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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parents: 900
diff changeset
142
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
143 found = true;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
144 }
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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parents: 900
diff changeset
145 }
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
146
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
147 if (!found)
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
148 {
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
149 return false;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
150 }
897
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151
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152 LOG(INFO) << "Delegating HTTP request to plugin for URI: " << flatUri;
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153
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154 std::vector<const char*> getKeys(getArguments.size());
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diff changeset
155 std::vector<const char*> getValues(getArguments.size());
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156
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diff changeset
157 OrthancPluginHttpRequest request;
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158 memset(&request, 0, sizeof(OrthancPluginHttpRequest));
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159
897
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160 switch (method)
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161 {
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diff changeset
162 case HttpMethod_Get:
bafc9d592632 REST callbacks are working
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parents:
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163 {
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diff changeset
164 request.method = OrthancPluginHttpMethod_Get;
897
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165
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166 size_t i = 0;
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parents:
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167 for (Arguments::const_iterator it = getArguments.begin();
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diff changeset
168 it != getArguments.end(); it++, i++)
bafc9d592632 REST callbacks are working
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diff changeset
169 {
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170 getKeys[i] = it->first.c_str();
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parents:
diff changeset
171 getValues[i] = it->second.c_str();
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parents:
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172 }
bafc9d592632 REST callbacks are working
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parents:
diff changeset
173
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parents:
diff changeset
174 break;
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parents:
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175 }
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176
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diff changeset
177 case HttpMethod_Post:
899
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178 request.method = OrthancPluginHttpMethod_Post;
897
bafc9d592632 REST callbacks are working
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179 break;
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180
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parents:
diff changeset
181 case HttpMethod_Delete:
899
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182 request.method = OrthancPluginHttpMethod_Delete;
897
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parents:
diff changeset
183 break;
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184
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parents:
diff changeset
185 case HttpMethod_Put:
899
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186 request.method = OrthancPluginHttpMethod_Put;
897
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parents:
diff changeset
187 break;
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188
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diff changeset
189 default:
bafc9d592632 REST callbacks are working
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diff changeset
190 throw OrthancException(ErrorCode_InternalError);
bafc9d592632 REST callbacks are working
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diff changeset
191 }
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diff changeset
192
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193
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diff changeset
194 request.groups = (cgroups.size() ? &cgroups[0] : NULL);
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
195 request.groupsCount = cgroups.size();
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diff changeset
196 request.getCount = getArguments.size();
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197 request.body = (postData.size() ? &postData[0] : NULL);
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diff changeset
198 request.bodySize = postData.size();
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diff changeset
199
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diff changeset
200 if (getArguments.size() > 0)
bb0a51561016 refactoring
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diff changeset
201 {
bb0a51561016 refactoring
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diff changeset
202 request.getKeys = &getKeys[0];
bb0a51561016 refactoring
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diff changeset
203 request.getValues = &getValues[0];
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diff changeset
204 }
bb0a51561016 refactoring
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diff changeset
205
901
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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parents: 900
diff changeset
206 assert(callback != NULL);
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
207 int32_t error = callback(reinterpret_cast<OrthancPluginRestOutput*>(&output),
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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parents: 900
diff changeset
208 flatUri.c_str(),
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
209 &request);
897
bafc9d592632 REST callbacks are working
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parents:
diff changeset
210
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
211 if (error < 0)
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
212 {
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213 LOG(ERROR) << "Plugin failed with error code " << error;
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214 return false;
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
215 }
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
216 else
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
217 {
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
218 if (error > 0)
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
219 {
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
220 LOG(WARNING) << "Plugin finished with warning code " << error;
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
221 }
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
222
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
223 return true;
bafc9d592632 REST callbacks are working
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parents:
diff changeset
224 }
bafc9d592632 REST callbacks are working
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parents:
diff changeset
225 }
899
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diff changeset
226
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diff changeset
227
907
9b8298234254 documentation
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parents: 904
diff changeset
228 bool PluginsHttpHandler::InvokeService(_OrthancPluginService service,
899
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diff changeset
229 const void* parameters)
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diff changeset
230 {
bb0a51561016 refactoring
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parents: 897
diff changeset
231 switch (service)
bb0a51561016 refactoring
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parents: 897
diff changeset
232 {
907
9b8298234254 documentation
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parents: 904
diff changeset
233 case _OrthancPluginService_RegisterRestCallback:
899
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parents: 897
diff changeset
234 {
904
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
235 const _OrthancPluginRestCallback& p =
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
236 *reinterpret_cast<const _OrthancPluginRestCallback*>(parameters);
899
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diff changeset
237
bb0a51561016 refactoring
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parents: 897
diff changeset
238 LOG(INFO) << "Plugin has registered a REST callback on: " << p.pathRegularExpression;
bb0a51561016 refactoring
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parents: 897
diff changeset
239 pimpl_->callbacks_.push_back(std::make_pair(new boost::regex(p.pathRegularExpression), p.callback));
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
240
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
241 return true;
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
242 }
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
243
907
9b8298234254 documentation
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 904
diff changeset
244 case _OrthancPluginService_AnswerBuffer:
899
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parents: 897
diff changeset
245 {
904
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parents: 901
diff changeset
246 const _OrthancPluginAnswerBuffer& p =
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
247 *reinterpret_cast<const _OrthancPluginAnswerBuffer*>(parameters);
899
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diff changeset
248
bb0a51561016 refactoring
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parents: 897
diff changeset
249 HttpOutput* translatedOutput = reinterpret_cast<HttpOutput*>(p.output);
bb0a51561016 refactoring
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parents: 897
diff changeset
250 translatedOutput->AnswerBufferWithContentType(p.answer, p.answerSize, p.mimeType);
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
251
bb0a51561016 refactoring
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parents: 897
diff changeset
252 return true;
bb0a51561016 refactoring
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parents: 897
diff changeset
253 }
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
254
907
9b8298234254 documentation
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 904
diff changeset
255 case _OrthancPluginService_CompressAndAnswerPngImage:
901
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
256 {
904
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parents: 901
diff changeset
257 const _OrthancPluginCompressAndAnswerPngImage& p =
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
258 *reinterpret_cast<const _OrthancPluginCompressAndAnswerPngImage*>(parameters);
901
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
259
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
260 HttpOutput* translatedOutput = reinterpret_cast<HttpOutput*>(p.output);
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
261
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
262 PixelFormat format;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
263 switch (p.format)
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
264 {
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
265 case OrthancPluginPixelFormat_Grayscale8:
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
266 format = PixelFormat_Grayscale8;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
267 break;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
268
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
269 case OrthancPluginPixelFormat_Grayscale16:
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
270 format = PixelFormat_Grayscale16;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
271 break;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
272
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
273 case OrthancPluginPixelFormat_SignedGrayscale16:
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
274 format = PixelFormat_SignedGrayscale16;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
275 break;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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276
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277 case OrthancPluginPixelFormat_RGB24:
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278 format = PixelFormat_RGB24;
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279 break;
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280
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281 case OrthancPluginPixelFormat_RGBA32:
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282 format = PixelFormat_RGBA32;
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283 break;
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284
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285 default:
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286 throw OrthancException(ErrorCode_ParameterOutOfRange);
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287 }
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288
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289 ImageAccessor accessor;
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290 accessor.AssignReadOnly(format, p.width, p.height, p.pitch, p.buffer);
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291
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292 PngWriter writer;
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293 std::string png;
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294 writer.WriteToMemory(png, accessor);
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295
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296 translatedOutput->AnswerBufferWithContentType(png, "image/png");
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297
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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298 return true;
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299 }
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300
907
9b8298234254 documentation
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301 case _OrthancPluginService_GetDicomForInstance:
904
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302 {
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303 const _OrthancPluginGetDicomForInstance& p =
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304 *reinterpret_cast<const _OrthancPluginGetDicomForInstance*>(parameters);
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305
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306 std::string dicom;
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307 pimpl_->context_.ReadFile(dicom, p.instanceId, FileContentType_Dicom);
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308
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309 p.target->size = dicom.size();
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310
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311 if (dicom.size() == 0)
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312 {
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313 p.target->data = NULL;
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314 }
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315 else
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316 {
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317 p.target->data = malloc(dicom.size());
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318 if (p.target->data != NULL)
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319 {
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320 memcpy(p.target->data, &dicom[0], dicom.size());
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321 }
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322 else
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323 {
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324 return false;
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325 }
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326 }
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327
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328 return true;
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329 }
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330
899
bb0a51561016 refactoring
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331 default:
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332 return false;
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333 }
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334 }
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335
908
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336
e078ea944089 refactoring HttpOutput
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337 void PluginsHttpHandler::SetOrthancRestApi(OrthancRestApi& restApi)
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338 {
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339 pimpl_->restApi_ = &restApi;
e078ea944089 refactoring HttpOutput
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340 }
e078ea944089 refactoring HttpOutput
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diff changeset
341
897
bafc9d592632 REST callbacks are working
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parents:
diff changeset
342 }