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annotate Plugins/Engine/PluginsHttpHandler.cpp @ 908:e078ea944089 plugins

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refactoring HttpOutput
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 19 Jun 2014 17:47:39 +0200
parents 9b8298234254
children ef71057d8b26
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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 SendHeaderData(const void* buffer, size_t length)
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60 {
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61 }
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62
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63 virtual void SendBodyData(const void* buffer, size_t length)
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64 {
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65 size_t pos = target_.size();
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66 target_.resize(pos + length);
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67
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68 if (length > 0)
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69 {
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70 memcpy(&target_[pos], buffer, length);
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71 }
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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 struct PluginsHttpHandler::PImpl
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79 {
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80 typedef std::pair<boost::regex*, OrthancPluginRestCallback> Callback;
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81 typedef std::list<Callback> Callbacks;
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82
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83 ServerContext& context_;
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84 Callbacks callbacks_;
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85 OrthancRestApi* restApi_;
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86
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87 PImpl(ServerContext& context) : context_(context), restApi_(NULL)
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88 {
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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 PluginsHttpHandler::PluginsHttpHandler(ServerContext& context)
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94 {
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95 pimpl_.reset(new PImpl(context));
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96 }
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97
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98
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99 PluginsHttpHandler::~PluginsHttpHandler()
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100 {
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101 for (PImpl::Callbacks::iterator it = pimpl_->callbacks_.begin();
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102 it != pimpl_->callbacks_.end(); it++)
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103 {
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104 delete it->first;
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105 }
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106 }
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107
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108
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109 bool PluginsHttpHandler::Handle(HttpOutput& output,
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110 HttpMethod method,
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111 const UriComponents& uri,
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112 const Arguments& headers,
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113 const Arguments& getArguments,
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114 const std::string& postData)
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115 {
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116 std::string flatUri = Toolbox::FlattenUri(uri);
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117 OrthancPluginRestCallback callback = NULL;
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118
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119 std::vector<std::string> groups;
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120 std::vector<const char*> cgroups;
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121
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122 bool found = false;
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123 for (PImpl::Callbacks::const_iterator it = pimpl_->callbacks_.begin();
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124 it != pimpl_->callbacks_.end() && !found; it++)
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125 {
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126 boost::cmatch what;
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127 if (boost::regex_match(flatUri.c_str(), what, *(it->first)))
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128 {
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129 callback = it->second;
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130
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131 if (what.size() > 1)
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132 {
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133 groups.resize(what.size() - 1);
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134 cgroups.resize(what.size() - 1);
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135 for (size_t i = 1; i < what.size(); i++)
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136 {
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137 groups[i - 1] = what[i];
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diff changeset
138 cgroups[i - 1] = groups[i - 1].c_str();
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diff changeset
139 }
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diff changeset
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 found = true;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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parents: 900
diff changeset
143 }
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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parents: 900
diff changeset
144 }
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diff changeset
145
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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parents: 900
diff changeset
146 if (!found)
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
147 {
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
148 return false;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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diff changeset
149 }
897
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150
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151 LOG(INFO) << "Delegating HTTP request to plugin for URI: " << flatUri;
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152
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153 std::vector<const char*> getKeys(getArguments.size());
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154 std::vector<const char*> getValues(getArguments.size());
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155
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156 OrthancPluginHttpRequest request;
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diff changeset
157 memset(&request, 0, sizeof(OrthancPluginHttpRequest));
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158
897
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159 switch (method)
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160 {
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diff changeset
161 case HttpMethod_Get:
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parents:
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162 {
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163 request.method = OrthancPluginHttpMethod_Get;
897
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164
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165 size_t i = 0;
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166 for (Arguments::const_iterator it = getArguments.begin();
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diff changeset
167 it != getArguments.end(); it++, i++)
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168 {
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169 getKeys[i] = it->first.c_str();
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170 getValues[i] = it->second.c_str();
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parents:
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171 }
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parents:
diff changeset
172
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diff changeset
173 break;
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174 }
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175
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diff changeset
176 case HttpMethod_Post:
899
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177 request.method = OrthancPluginHttpMethod_Post;
897
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178 break;
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179
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parents:
diff changeset
180 case HttpMethod_Delete:
899
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diff changeset
181 request.method = OrthancPluginHttpMethod_Delete;
897
bafc9d592632 REST callbacks are working
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parents:
diff changeset
182 break;
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183
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parents:
diff changeset
184 case HttpMethod_Put:
899
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diff changeset
185 request.method = OrthancPluginHttpMethod_Put;
897
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parents:
diff changeset
186 break;
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187
bafc9d592632 REST callbacks are working
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diff changeset
188 default:
bafc9d592632 REST callbacks are working
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diff changeset
189 throw OrthancException(ErrorCode_InternalError);
bafc9d592632 REST callbacks are working
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diff changeset
190 }
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diff changeset
191
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192
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2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
193 request.groups = (cgroups.size() ? &cgroups[0] : NULL);
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
194 request.groupsCount = cgroups.size();
899
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diff changeset
195 request.getCount = getArguments.size();
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diff changeset
196 request.body = (postData.size() ? &postData[0] : NULL);
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diff changeset
197 request.bodySize = postData.size();
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diff changeset
198
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diff changeset
199 if (getArguments.size() > 0)
bb0a51561016 refactoring
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diff changeset
200 {
bb0a51561016 refactoring
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diff changeset
201 request.getKeys = &getKeys[0];
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diff changeset
202 request.getValues = &getValues[0];
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diff changeset
203 }
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diff changeset
204
901
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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parents: 900
diff changeset
205 assert(callback != NULL);
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
206 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
207 flatUri.c_str(),
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
208 &request);
897
bafc9d592632 REST callbacks are working
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parents:
diff changeset
209
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
210 if (error < 0)
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
211 {
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
212 LOG(ERROR) << "Plugin failed with error code " << error;
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213 return false;
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
214 }
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
215 else
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
216 {
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
217 if (error > 0)
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
218 {
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
219 LOG(WARNING) << "Plugin finished with warning code " << error;
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
220 }
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 return true;
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
223 }
bafc9d592632 REST callbacks are working
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
224 }
899
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diff changeset
225
bb0a51561016 refactoring
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diff changeset
226
907
9b8298234254 documentation
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parents: 904
diff changeset
227 bool PluginsHttpHandler::InvokeService(_OrthancPluginService service,
899
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diff changeset
228 const void* parameters)
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diff changeset
229 {
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diff changeset
230 switch (service)
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
231 {
907
9b8298234254 documentation
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parents: 904
diff changeset
232 case _OrthancPluginService_RegisterRestCallback:
899
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parents: 897
diff changeset
233 {
904
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
234 const _OrthancPluginRestCallback& p =
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
235 *reinterpret_cast<const _OrthancPluginRestCallback*>(parameters);
899
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diff changeset
236
bb0a51561016 refactoring
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parents: 897
diff changeset
237 LOG(INFO) << "Plugin has registered a REST callback on: " << p.pathRegularExpression;
bb0a51561016 refactoring
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parents: 897
diff changeset
238 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
239
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
240 return true;
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
241 }
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
242
907
9b8298234254 documentation
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 904
diff changeset
243 case _OrthancPluginService_AnswerBuffer:
899
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parents: 897
diff changeset
244 {
904
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parents: 901
diff changeset
245 const _OrthancPluginAnswerBuffer& p =
2732b5f57d9c sample to forward dicom data
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 901
diff changeset
246 *reinterpret_cast<const _OrthancPluginAnswerBuffer*>(parameters);
899
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parents: 897
diff changeset
247
bb0a51561016 refactoring
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parents: 897
diff changeset
248 HttpOutput* translatedOutput = reinterpret_cast<HttpOutput*>(p.output);
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
249 translatedOutput->AnswerBufferWithContentType(p.answer, p.answerSize, p.mimeType);
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
250
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
251 return true;
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
252 }
bb0a51561016 refactoring
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 897
diff changeset
253
907
9b8298234254 documentation
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 904
diff changeset
254 case _OrthancPluginService_CompressAndAnswerPngImage:
901
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
255 {
904
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parents: 901
diff changeset
256 const _OrthancPluginCompressAndAnswerPngImage& p =
2732b5f57d9c sample to forward dicom data
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parents: 901
diff changeset
257 *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
258
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
259 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
260
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
261 PixelFormat format;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
262 switch (p.format)
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
263 {
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
264 case OrthancPluginPixelFormat_Grayscale8:
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
265 format = PixelFormat_Grayscale8;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
266 break;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
267
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
268 case OrthancPluginPixelFormat_Grayscale16:
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
269 format = PixelFormat_Grayscale16;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
270 break;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
271
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
272 case OrthancPluginPixelFormat_SignedGrayscale16:
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
273 format = PixelFormat_SignedGrayscale16;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
274 break;
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 900
diff changeset
275
7d88f3f4a3b3 refactoring IsServedUri, answer PNG images, regular expression groups
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276 case OrthancPluginPixelFormat_RGB24:
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277 format = PixelFormat_RGB24;
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278 break;
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279
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280 case OrthancPluginPixelFormat_RGBA32:
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281 format = PixelFormat_RGBA32;
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282 break;
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283
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284 default:
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285 throw OrthancException(ErrorCode_ParameterOutOfRange);
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286 }
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287
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288 ImageAccessor accessor;
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289 accessor.AssignReadOnly(format, p.width, p.height, p.pitch, p.buffer);
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290
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291 PngWriter writer;
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292 std::string png;
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293 writer.WriteToMemory(png, accessor);
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294
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295 translatedOutput->AnswerBufferWithContentType(png, "image/png");
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296
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297 return true;
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298 }
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299
907
9b8298234254 documentation
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300 case _OrthancPluginService_GetDicomForInstance:
904
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301 {
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302 const _OrthancPluginGetDicomForInstance& p =
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303 *reinterpret_cast<const _OrthancPluginGetDicomForInstance*>(parameters);
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304
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305 std::string dicom;
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306 pimpl_->context_.ReadFile(dicom, p.instanceId, FileContentType_Dicom);
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307
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308 p.target->size = dicom.size();
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309
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310 if (dicom.size() == 0)
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311 {
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312 p.target->data = NULL;
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313 }
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314 else
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315 {
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316 p.target->data = malloc(dicom.size());
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317 if (p.target->data != NULL)
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318 {
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319 memcpy(p.target->data, &dicom[0], dicom.size());
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320 }
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321 else
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322 {
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323 return false;
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324 }
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325 }
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326
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327 return true;
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328 }
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329
899
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330 default:
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331 return false;
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332 }
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333 }
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334
908
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335
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336 void PluginsHttpHandler::SetOrthancRestApi(OrthancRestApi& restApi)
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337 {
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338 pimpl_->restApi_ = &restApi;
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339 }
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340
897
bafc9d592632 REST callbacks are working
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341 }