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annotate Core/RestApi/RestApi.cpp @ 980:f1ff2a2f06cd plugins

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use RestApiHierarchy inside RestApi
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 30 Jun 2014 17:41:40 +0200
parents 2a9e08136860
children 8d1845feb277
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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 "../PrecompiledHeaders.h"
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34 #include "RestApi.h"
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35
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36 #include <stdlib.h> // To define "_exit()" under Windows
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37 #include <glog/logging.h>
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38
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39 #include <stdio.h>
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40
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41 namespace Orthanc
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42 {
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43 namespace
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44 {
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45 // Anonymous namespace to avoid clashes between compilation modules
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46 class HttpHandlerVisitor : public RestApiHierarchy::IVisitor
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47 {
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48 private:
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49 RestApi& api_;
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50 HttpOutput& output_;
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51 HttpMethod method_;
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52 const HttpHandler::Arguments& headers_;
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53 const HttpHandler::Arguments& getArguments_;
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54 const std::string& postData_;
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55
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56 public:
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57 HttpHandlerVisitor(RestApi& api,
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58 HttpOutput& output,
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59 HttpMethod method,
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60 const HttpHandler::Arguments& headers,
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61 const HttpHandler::Arguments& getArguments,
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62 const std::string& postData) :
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63 api_(api),
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64 output_(output),
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65 method_(method),
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66 headers_(headers),
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67 getArguments_(getArguments),
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68 postData_(postData)
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69 {
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70 }
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71
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72 virtual bool Visit(const RestApiHierarchy::Resource& resource,
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73 const UriComponents& uri,
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74 const HttpHandler::Arguments& components,
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75 const UriComponents& trailing)
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76 {
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77 if (resource.HasHandler(method_))
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78 {
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79 RestApiOutput output(output_);
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80
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81 switch (method_)
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82 {
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83 case HttpMethod_Get:
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84 {
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85 RestApiGetCall call(output, api_, headers_, components, trailing, uri, getArguments_);
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86 resource.Handle(call);
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87 return true;
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88 }
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89
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90 case HttpMethod_Post:
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91 {
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92 RestApiPostCall call(output, api_, headers_, components, trailing, uri, postData_);
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93 resource.Handle(call);
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94 return true;
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95 }
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96
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97 case HttpMethod_Delete:
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98 {
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99 RestApiDeleteCall call(output, api_, headers_, components, trailing, uri);
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100 resource.Handle(call);
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101 return true;
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102 }
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103
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104 case HttpMethod_Put:
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105 {
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106 RestApiPutCall call(output, api_, headers_, components, trailing, uri, postData_);
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107 resource.Handle(call);
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108 return true;
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109 }
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110
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111 default:
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112 return false;
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113 }
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114 }
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115
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116 return false;
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117 }
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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 static void AddMethod(std::string& target,
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124 const std::string& method)
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125 {
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126 if (target.size() > 0)
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127 target += "," + method;
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128 else
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129 target = method;
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130 }
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131
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132 static std::string MethodsToString(const std::set<HttpMethod>& methods)
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133 {
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134 std::string s;
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135
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136 if (methods.find(HttpMethod_Get) != methods.end())
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137 {
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138 AddMethod(s, "GET");
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139 }
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140
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141 if (methods.find(HttpMethod_Post) != methods.end())
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142 {
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143 AddMethod(s, "POST");
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144 }
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145
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146 if (methods.find(HttpMethod_Put) != methods.end())
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147 {
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148 AddMethod(s, "PUT");
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149 }
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150
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151 if (methods.find(HttpMethod_Delete) != methods.end())
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152 {
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153 AddMethod(s, "DELETE");
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154 }
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155
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156 return s;
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157 }
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158
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159
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160
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161 bool RestApi::Handle(HttpOutput& output,
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162 HttpMethod method,
209
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163 const UriComponents& uri,
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164 const Arguments& headers,
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165 const Arguments& getArguments,
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166 const std::string& postData)
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167 {
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168 HttpHandlerVisitor visitor(*this, output, method, headers, getArguments, postData);
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169
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170 if (root_.LookupResource(uri, visitor))
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171 {
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172 return true;
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173 }
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174
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175 Json::Value directory;
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176 if (root_.GetDirectory(directory, uri))
209
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177 {
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178 RestApiOutput tmp(output);
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179 tmp.AnswerJson(directory);
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180 return true;
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181 }
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182
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183 std::set<HttpMethod> methods;
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184 root_.GetAcceptedMethods(methods, uri);
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185
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186 if (methods.empty())
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187 {
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188 return false; // This URI is not served by this REST API
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189 }
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190 else
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191 {
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192 LOG(INFO) << "REST method " << EnumerationToString(method)
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193 << " not allowed on: " << Toolbox::FlattenUri(uri);
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194
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195 output.SendMethodNotAllowedError(MethodsToString(methods));
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196
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197 return true;
209
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198 }
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199 }
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200
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201 void RestApi::Register(const std::string& path,
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202 RestApiGetCall::Handler handler)
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203 {
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204 root_.Register(path, handler);
209
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205 }
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206
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207 void RestApi::Register(const std::string& path,
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208 RestApiPutCall::Handler handler)
209
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209 {
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210 root_.Register(path, handler);
209
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211 }
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212
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213 void RestApi::Register(const std::string& path,
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214 RestApiPostCall::Handler handler)
209
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215 {
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216 root_.Register(path, handler);
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217 }
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218
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219 void RestApi::Register(const std::string& path,
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220 RestApiDeleteCall::Handler handler)
209
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221 {
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222 root_.Register(path, handler);
209
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223 }
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224 }