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annotate Core/RestApi/RestApi.cpp @ 1515:c94353fbd4e9

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cont http compression
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 10 Aug 2015 17:18:36 +0200
parents d73a2178b319
children 4f8c8ef114db
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, 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 "../Logging.h"
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37
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38 #include <stdlib.h> // To define "_exit()" under Windows
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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 RestApiOutput& output_;
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51 HttpMethod method_;
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52 const IHttpHandler::Arguments& headers_;
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53 const IHttpHandler::Arguments& getArguments_;
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54 const char* bodyData_;
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55 size_t bodySize_;
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56
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57 public:
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58 HttpHandlerVisitor(RestApi& api,
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59 RestApiOutput& output,
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60 HttpMethod method,
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61 const IHttpHandler::Arguments& headers,
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62 const IHttpHandler::Arguments& getArguments,
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63 const char* bodyData,
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64 size_t bodySize) :
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65 api_(api),
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66 output_(output),
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67 method_(method),
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68 headers_(headers),
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69 getArguments_(getArguments),
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70 bodyData_(bodyData),
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71 bodySize_(bodySize)
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72 {
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73 }
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74
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75 virtual bool Visit(const RestApiHierarchy::Resource& resource,
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76 const UriComponents& uri,
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77 const IHttpHandler::Arguments& components,
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78 const UriComponents& trailing)
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79 {
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80 if (resource.HasHandler(method_))
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81 {
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82 switch (method_)
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83 {
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84 case HttpMethod_Get:
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85 {
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86 RestApiGetCall call(output_, api_, headers_, components, trailing, uri, getArguments_);
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87 resource.Handle(call);
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88 return true;
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89 }
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90
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91 case HttpMethod_Post:
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92 {
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93 RestApiPostCall call(output_, api_, headers_, components, trailing, uri, bodyData_, bodySize_);
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94 resource.Handle(call);
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95 return true;
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96 }
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97
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98 case HttpMethod_Delete:
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99 {
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100 RestApiDeleteCall call(output_, api_, headers_, components, trailing, uri);
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101 resource.Handle(call);
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102 return true;
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103 }
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104
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105 case HttpMethod_Put:
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106 {
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107 RestApiPutCall call(output_, api_, headers_, components, trailing, uri, bodyData_, bodySize_);
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108 resource.Handle(call);
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109 return true;
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110 }
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111
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112 default:
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113 return false;
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114 }
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115 }
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116
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117 return false;
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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 static void AddMethod(std::string& target,
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125 const std::string& method)
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126 {
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127 if (target.size() > 0)
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128 target += "," + method;
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129 else
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130 target = method;
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131 }
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132
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133 static std::string MethodsToString(const std::set<HttpMethod>& methods)
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134 {
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135 std::string s;
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136
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137 if (methods.find(HttpMethod_Get) != methods.end())
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138 {
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139 AddMethod(s, "GET");
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140 }
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141
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142 if (methods.find(HttpMethod_Post) != methods.end())
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143 {
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144 AddMethod(s, "POST");
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145 }
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146
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147 if (methods.find(HttpMethod_Put) != methods.end())
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148 {
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149 AddMethod(s, "PUT");
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150 }
209
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151
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152 if (methods.find(HttpMethod_Delete) != methods.end())
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153 {
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154 AddMethod(s, "DELETE");
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155 }
209
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156
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157 return s;
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158 }
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159
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160
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161
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162 bool RestApi::Handle(HttpOutput& output,
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163 HttpMethod method,
209
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164 const UriComponents& uri,
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165 const Arguments& headers,
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166 const GetArguments& getArguments,
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167 const char* bodyData,
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168 size_t bodySize)
209
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169 {
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170 RestApiOutput wrappedOutput(output, method);
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171
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172 #if ORTHANC_PUGIXML_ENABLED == 1
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173 {
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174 // Look if the client wishes XML answers instead of JSON
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175 // http://www.w3.org/Protocols/HTTP/HTRQ_Headers.html#z3
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176 Arguments::const_iterator it = headers.find("accept");
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177 if (it != headers.end())
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178 {
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179 std::vector<std::string> accepted;
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180 Toolbox::TokenizeString(accepted, it->second, ';');
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181 for (size_t i = 0; i < accepted.size(); i++)
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182 {
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183 if (accepted[i] == "application/xml")
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184 {
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185 wrappedOutput.SetConvertJsonToXml(true);
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186 }
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187
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188 if (accepted[i] == "application/json")
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189 {
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190 wrappedOutput.SetConvertJsonToXml(false);
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191 }
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192 }
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193 }
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194 }
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195 #endif
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196
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197 std::set<HttpCompression> compressions;
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198 GetAcceptedCompressions(compressions, headers);
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199
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200 if (compressions.find(HttpCompression_Deflate) != compressions.end())
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201 {
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202 wrappedOutput.AllowDeflateCompression(true);
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203 }
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204
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205 if (compressions.find(HttpCompression_Gzip) != compressions.end())
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206 {
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207 wrappedOutput.AllowGzipCompression(true);
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208 }
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209
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210
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diff changeset
211 Arguments compiled;
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212 HttpToolbox::CompileGetArguments(compiled, getArguments);
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213
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214 HttpHandlerVisitor visitor(*this, wrappedOutput, method, headers, compiled, bodyData, bodySize);
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215
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216 if (root_.LookupResource(uri, visitor))
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217 {
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218 wrappedOutput.Finalize();
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219 return true;
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220 }
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221
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diff changeset
222 std::set<HttpMethod> methods;
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223 root_.GetAcceptedMethods(methods, uri);
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224
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225 if (methods.empty())
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226 {
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227 return false; // This URI is not served by this REST API
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228 }
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229 else
209
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230 {
477
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diff changeset
231 LOG(INFO) << "REST method " << EnumerationToString(method)
416
1188cb0ddaa5 http method faking
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diff changeset
232 << " not allowed on: " << Toolbox::FlattenUri(uri);
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233
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diff changeset
234 output.SendMethodNotAllowed(MethodsToString(methods));
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235
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236 return true;
209
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237 }
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238 }
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239
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240 void RestApi::Register(const std::string& path,
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241 RestApiGetCall::Handler handler)
209
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242 {
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243 root_.Register(path, handler);
209
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244 }
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245
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246 void RestApi::Register(const std::string& path,
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247 RestApiPutCall::Handler handler)
209
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248 {
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diff changeset
249 root_.Register(path, handler);
209
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250 }
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251
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252 void RestApi::Register(const std::string& path,
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253 RestApiPostCall::Handler handler)
209
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254 {
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diff changeset
255 root_.Register(path, handler);
209
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256 }
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257
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258 void RestApi::Register(const std::string& path,
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diff changeset
259 RestApiDeleteCall::Handler handler)
209
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diff changeset
260 {
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261 root_.Register(path, handler);
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262 }
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diff changeset
263
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diff changeset
264 void RestApi::AutoListChildren(RestApiGetCall& call)
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diff changeset
265 {
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diff changeset
266 RestApi& context = call.GetContext();
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diff changeset
267
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diff changeset
268 Json::Value directory;
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diff changeset
269 if (context.root_.GetDirectory(directory, call.GetFullUri()))
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diff changeset
270 {
0332e6e8c679 Fix automated generation of the list of resource children in the REST API
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1046
diff changeset
271 call.GetOutput().AnswerJson(directory);
0332e6e8c679 Fix automated generation of the list of resource children in the REST API
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1046
diff changeset
272 }
0332e6e8c679 Fix automated generation of the list of resource children in the REST API
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1046
diff changeset
273 }
209
9960642f0f45 abstraction of RestApi
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
274 }