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comparison Core/RestApi/RestApi.cpp @ 209:9960642f0f45

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abstraction of RestApi
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 28 Nov 2012 17:22:07 +0100
parents
children 96b7918a6a18
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208:de640de989b8 209:9960642f0f45
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012 Medical Physics Department, CHU of Liege,
4 * Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * In addition, as a special exception, the copyright holders of this
12 * program give permission to link the code of its release with the
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
14 * that use the same license as the "OpenSSL" library), and distribute
15 * the linked executables. You must obey the GNU General Public License
16 * in all respects for all of the code used other than "OpenSSL". If you
17 * modify file(s) with this exception, you may extend this exception to
18 * your version of the file(s), but you are not obligated to do so. If
19 * you do not wish to do so, delete this exception statement from your
20 * version. If you delete this exception statement from all source files
21 * in the program, then also delete it here.
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 **/
31
32
33 #include "RestApi.h"
34
35 namespace Orthanc
36 {
37 bool RestApi::IsGetAccepted(const UriComponents& uri)
38 {
39 for (GetHandlers::const_iterator it = getHandlers_.begin();
40 it != getHandlers_.end(); it++)
41 {
42 if (it->first->Match(uri))
43 {
44 return true;
45 }
46 }
47
48 return false;
49 }
50
51 bool RestApi::IsPutAccepted(const UriComponents& uri)
52 {
53 for (PutHandlers::const_iterator it = putHandlers_.begin();
54 it != putHandlers_.end(); it++)
55 {
56 if (it->first->Match(uri))
57 {
58 return true;
59 }
60 }
61
62 return false;
63 }
64
65 bool RestApi::IsPostAccepted(const UriComponents& uri)
66 {
67 for (PostHandlers::const_iterator it = postHandlers_.begin();
68 it != postHandlers_.end(); it++)
69 {
70 if (it->first->Match(uri))
71 {
72 return true;
73 }
74 }
75
76 return false;
77 }
78
79 bool RestApi::IsDeleteAccepted(const UriComponents& uri)
80 {
81 for (DeleteHandlers::const_iterator it = deleteHandlers_.begin();
82 it != deleteHandlers_.end(); it++)
83 {
84 if (it->first->Match(uri))
85 {
86 return true;
87 }
88 }
89
90 return false;
91 }
92
93 static void AddMethod(std::string& target,
94 const std::string& method)
95 {
96 if (target.size() > 0)
97 target += "," + method;
98 else
99 target = method;
100 }
101
102 std::string RestApi::GetAcceptedMethods(const UriComponents& uri)
103 {
104 std::string s;
105
106 if (IsGetAccepted(uri))
107 AddMethod(s, "GET");
108
109 if (IsPutAccepted(uri))
110 AddMethod(s, "PUT");
111
112 if (IsPostAccepted(uri))
113 AddMethod(s, "POST");
114
115 if (IsDeleteAccepted(uri))
116 AddMethod(s, "DELETE");
117
118 return s;
119 }
120
121 RestApi::~RestApi()
122 {
123 for (GetHandlers::iterator it = getHandlers_.begin();
124 it != getHandlers_.end(); it++)
125 {
126 delete it->first;
127 }
128
129 for (PutHandlers::iterator it = putHandlers_.begin();
130 it != putHandlers_.end(); it++)
131 {
132 delete it->first;
133 }
134
135 for (PostHandlers::iterator it = postHandlers_.begin();
136 it != postHandlers_.end(); it++)
137 {
138 delete it->first;
139 }
140
141 for (DeleteHandlers::iterator it = deleteHandlers_.begin();
142 it != deleteHandlers_.end(); it++)
143 {
144 delete it->first;
145 }
146 }
147
148 bool RestApi::IsServedUri(const UriComponents& uri)
149 {
150 return (IsGetAccepted(uri) ||
151 IsPutAccepted(uri) ||
152 IsPostAccepted(uri) ||
153 IsDeleteAccepted(uri));
154 }
155
156 void RestApi::Handle(HttpOutput& output,
157 const std::string& method,
158 const UriComponents& uri,
159 const Arguments& headers,
160 const Arguments& getArguments,
161 const std::string& postData)
162 {
163 bool ok = false;
164 RestApiOutput restOutput(output);
165 RestApiPath::Components components;
166 UriComponents trailing;
167
168 if (method == "GET")
169 {
170 for (GetHandlers::const_iterator it = getHandlers_.begin();
171 it != getHandlers_.end(); it++)
172 {
173 if (it->first->Match(components, trailing, uri))
174 {
175 ok = true;
176 GetCall call;
177 call.output_ = &restOutput;
178 call.context_ = context_.get();
179 call.httpHeaders_ = &headers;
180 call.uriComponents_ = &components;
181 call.trailing_ = &trailing;
182
183 call.getArguments_ = &getArguments;
184 it->second(call);
185 }
186 }
187 }
188 else if (method == "PUT")
189 {
190 for (PutHandlers::const_iterator it = putHandlers_.begin();
191 it != putHandlers_.end(); it++)
192 {
193 if (it->first->Match(components, trailing, uri))
194 {
195 ok = true;
196 PutCall call;
197 call.output_ = &restOutput;
198 call.context_ = context_.get();
199 call.httpHeaders_ = &headers;
200 call.uriComponents_ = &components;
201 call.trailing_ = &trailing;
202
203 call.data_ = &postData;
204 it->second(call);
205 }
206 }
207 }
208 else if (method == "POST")
209 {
210 for (PostHandlers::const_iterator it = postHandlers_.begin();
211 it != postHandlers_.end(); it++)
212 {
213 if (it->first->Match(components, trailing, uri))
214 {
215 ok = true;
216 PostCall call;
217 call.output_ = &restOutput;
218 call.context_ = context_.get();
219 call.httpHeaders_ = &headers;
220 call.uriComponents_ = &components;
221 call.trailing_ = &trailing;
222
223 call.data_ = &postData;
224 it->second(call);
225 }
226 }
227 }
228 else if (method == "DELETE")
229 {
230 for (DeleteHandlers::const_iterator it = deleteHandlers_.begin();
231 it != deleteHandlers_.end(); it++)
232 {
233 if (it->first->Match(components, trailing, uri))
234 {
235 ok = true;
236 DeleteCall call;
237 call.output_ = &restOutput;
238 call.context_ = context_.get();
239 call.httpHeaders_ = &headers;
240 call.uriComponents_ = &components;
241 call.trailing_ = &trailing;
242 it->second(call);
243 }
244 }
245 }
246
247 if (!ok)
248 {
249 output.SendMethodNotAllowedError(GetAcceptedMethods(uri));
250 }
251 }
252
253 void RestApi::Register(const std::string& path,
254 GetHandler handler)
255 {
256 getHandlers_.push_back(std::make_pair(new RestApiPath(path), handler));
257 }
258
259 void RestApi::Register(const std::string& path,
260 PutHandler handler)
261 {
262 putHandlers_.push_back(std::make_pair(new RestApiPath(path), handler));
263 }
264
265 void RestApi::Register(const std::string& path,
266 PostHandler handler)
267 {
268 postHandlers_.push_back(std::make_pair(new RestApiPath(path), handler));
269 }
270
271 void RestApi::Register(const std::string& path,
272 DeleteHandler handler)
273 {
274 deleteHandlers_.push_back(std::make_pair(new RestApiPath(path), handler));
275 }
276 }