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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #ifndef CEPH_RGW_HTTP_CLIENT_H | |
5 | #define CEPH_RGW_HTTP_CLIENT_H | |
6 | ||
7 | #include "common/RWLock.h" | |
8 | #include "common/Cond.h" | |
9 | #include "rgw_common.h" | |
10 | #include "rgw_string.h" | |
11 | ||
12 | #include <atomic> | |
13 | ||
14 | using param_pair_t = pair<string, string>; | |
15 | using param_vec_t = vector<param_pair_t>; | |
16 | ||
17 | struct rgw_http_req_data; | |
18 | ||
19 | class RGWHTTPClient | |
20 | { | |
21 | friend class RGWHTTPManager; | |
22 | ||
23 | bufferlist send_bl; | |
24 | bufferlist::iterator send_iter; | |
25 | size_t send_len; | |
26 | bool has_send_len; | |
27 | long http_status; | |
28 | ||
29 | rgw_http_req_data *req_data; | |
30 | ||
31 | void *user_info; | |
32 | ||
33 | string last_method; | |
34 | string last_url; | |
35 | bool verify_ssl; // Do not validate self signed certificates, default to false | |
36 | ||
37 | std::atomic<unsigned> stopped { 0 }; | |
38 | ||
39 | protected: | |
40 | CephContext *cct; | |
41 | param_vec_t headers; | |
42 | ||
43 | int init_request(const char *method, | |
44 | const char *url, | |
31f18b77 FG |
45 | rgw_http_req_data *req_data, |
46 | bool send_data_hint = false); | |
7c673cae FG |
47 | |
48 | virtual int receive_header(void *ptr, size_t len) { | |
49 | return 0; | |
50 | } | |
51 | virtual int receive_data(void *ptr, size_t len) { | |
52 | return 0; | |
53 | } | |
54 | virtual int send_data(void *ptr, size_t len) { | |
55 | return 0; | |
56 | } | |
57 | ||
58 | /* Callbacks for libcurl. */ | |
59 | static size_t simple_receive_http_header(void *ptr, | |
60 | size_t size, | |
61 | size_t nmemb, | |
62 | void *_info); | |
63 | static size_t receive_http_header(void *ptr, | |
64 | size_t size, | |
65 | size_t nmemb, | |
66 | void *_info); | |
67 | ||
68 | static size_t simple_receive_http_data(void *ptr, | |
69 | size_t size, | |
70 | size_t nmemb, | |
71 | void *_info); | |
72 | static size_t receive_http_data(void *ptr, | |
73 | size_t size, | |
74 | size_t nmemb, | |
75 | void *_info); | |
76 | ||
77 | static size_t simple_send_http_data(void *ptr, | |
78 | size_t size, | |
79 | size_t nmemb, | |
80 | void *_info); | |
81 | static size_t send_http_data(void *ptr, | |
82 | size_t size, | |
83 | size_t nmemb, | |
84 | void *_info); | |
85 | public: | |
86 | static const long HTTP_STATUS_NOSTATUS = 0; | |
87 | static const long HTTP_STATUS_UNAUTHORIZED = 401; | |
88 | static const long HTTP_STATUS_NOTFOUND = 404; | |
89 | ||
90 | virtual ~RGWHTTPClient(); | |
91 | explicit RGWHTTPClient(CephContext *cct) | |
92 | : send_len(0), | |
93 | has_send_len(false), | |
94 | http_status(HTTP_STATUS_NOSTATUS), | |
95 | req_data(nullptr), | |
96 | user_info(nullptr), | |
31f18b77 | 97 | verify_ssl(cct->_conf->rgw_verify_ssl), |
7c673cae FG |
98 | cct(cct) { |
99 | } | |
100 | ||
101 | void set_user_info(void *info) { | |
102 | user_info = info; | |
103 | } | |
104 | ||
105 | void *get_user_info() { | |
106 | return user_info; | |
107 | } | |
108 | ||
109 | void append_header(const string& name, const string& val) { | |
110 | headers.push_back(pair<string, string>(name, val)); | |
111 | } | |
112 | ||
113 | void set_send_length(size_t len) { | |
114 | send_len = len; | |
115 | has_send_len = true; | |
116 | } | |
117 | ||
118 | ||
119 | long get_http_status() const { | |
120 | return http_status; | |
121 | } | |
122 | ||
123 | void set_verify_ssl(bool flag) { | |
124 | verify_ssl = flag; | |
125 | } | |
126 | ||
127 | int process(const char *method, const char *url); | |
128 | int process(const char *url) { return process("GET", url); } | |
129 | ||
130 | int wait(); | |
131 | rgw_http_req_data *get_req_data() { return req_data; } | |
132 | ||
133 | string to_str(); | |
134 | ||
135 | int get_req_retcode(); | |
136 | }; | |
137 | ||
138 | ||
139 | class RGWHTTPHeadersCollector : public RGWHTTPClient { | |
140 | public: | |
141 | typedef std::string header_name_t; | |
142 | typedef std::string header_value_t; | |
143 | typedef std::set<header_name_t, ltstr_nocase> header_spec_t; | |
144 | ||
145 | RGWHTTPHeadersCollector(CephContext * const cct, | |
146 | const header_spec_t relevant_headers) | |
147 | : RGWHTTPClient(cct), | |
148 | relevant_headers(relevant_headers) { | |
149 | } | |
150 | ||
151 | std::map<header_name_t, header_value_t, ltstr_nocase> get_headers() const { | |
152 | return found_headers; | |
153 | } | |
154 | ||
155 | /* Throws std::out_of_range */ | |
156 | const header_value_t& get_header_value(const header_name_t& name) const { | |
157 | return found_headers.at(name); | |
158 | } | |
159 | ||
160 | protected: | |
161 | int receive_header(void *ptr, size_t len) override; | |
162 | ||
163 | int receive_data(void *ptr, size_t len) override { | |
164 | return 0; | |
165 | } | |
166 | ||
167 | int send_data(void *ptr, size_t len) override { | |
168 | return 0; | |
169 | } | |
170 | ||
171 | private: | |
172 | const std::set<header_name_t, ltstr_nocase> relevant_headers; | |
173 | std::map<header_name_t, header_value_t, ltstr_nocase> found_headers; | |
174 | }; | |
175 | ||
176 | ||
177 | class RGWHTTPTransceiver : public RGWHTTPHeadersCollector { | |
178 | bufferlist * const read_bl; | |
179 | std::string post_data; | |
180 | size_t post_data_index; | |
181 | ||
182 | public: | |
183 | RGWHTTPTransceiver(CephContext * const cct, | |
184 | bufferlist * const read_bl, | |
185 | const header_spec_t intercept_headers = {}) | |
186 | : RGWHTTPHeadersCollector(cct, intercept_headers), | |
187 | read_bl(read_bl), | |
188 | post_data_index(0) { | |
189 | } | |
190 | ||
191 | RGWHTTPTransceiver(CephContext * const cct, | |
192 | bufferlist * const read_bl, | |
193 | const bool verify_ssl, | |
194 | const header_spec_t intercept_headers = {}) | |
195 | : RGWHTTPHeadersCollector(cct, intercept_headers), | |
196 | read_bl(read_bl), | |
197 | post_data_index(0) { | |
198 | set_verify_ssl(verify_ssl); | |
199 | } | |
200 | ||
201 | void set_post_data(const std::string& _post_data) { | |
202 | this->post_data = _post_data; | |
203 | } | |
204 | ||
205 | protected: | |
206 | int send_data(void* ptr, size_t len) override; | |
207 | ||
208 | int receive_data(void *ptr, size_t len) override { | |
209 | read_bl->append((char *)ptr, len); | |
210 | return 0; | |
211 | } | |
212 | }; | |
213 | ||
214 | typedef RGWHTTPTransceiver RGWPostHTTPData; | |
215 | ||
216 | ||
217 | class RGWCompletionManager; | |
218 | ||
219 | class RGWHTTPManager { | |
220 | CephContext *cct; | |
221 | RGWCompletionManager *completion_mgr; | |
222 | void *multi_handle; | |
223 | bool is_threaded; | |
224 | std::atomic<unsigned> going_down { 0 }; | |
225 | std::atomic<unsigned> is_stopped { 0 }; | |
226 | ||
227 | RWLock reqs_lock; | |
228 | map<uint64_t, rgw_http_req_data *> reqs; | |
229 | list<rgw_http_req_data *> unregistered_reqs; | |
230 | map<uint64_t, rgw_http_req_data *> complete_reqs; | |
231 | int64_t num_reqs; | |
232 | int64_t max_threaded_req; | |
233 | int thread_pipe[2]; | |
234 | ||
235 | void register_request(rgw_http_req_data *req_data); | |
236 | void complete_request(rgw_http_req_data *req_data); | |
237 | void _complete_request(rgw_http_req_data *req_data); | |
238 | void unregister_request(rgw_http_req_data *req_data); | |
239 | void _unlink_request(rgw_http_req_data *req_data); | |
240 | void unlink_request(rgw_http_req_data *req_data); | |
241 | void finish_request(rgw_http_req_data *req_data, int r); | |
242 | void _finish_request(rgw_http_req_data *req_data, int r); | |
243 | int link_request(rgw_http_req_data *req_data); | |
244 | ||
245 | void manage_pending_requests(); | |
246 | ||
247 | class ReqsThread : public Thread { | |
248 | RGWHTTPManager *manager; | |
249 | ||
250 | public: | |
251 | ReqsThread(RGWHTTPManager *_m) : manager(_m) {} | |
252 | void *entry() override; | |
253 | }; | |
254 | ||
255 | ReqsThread *reqs_thread; | |
256 | ||
257 | void *reqs_thread_entry(); | |
258 | ||
259 | int signal_thread(); | |
260 | ||
261 | public: | |
262 | RGWHTTPManager(CephContext *_cct, RGWCompletionManager *completion_mgr = NULL); | |
263 | ~RGWHTTPManager(); | |
264 | ||
265 | int set_threaded(); | |
266 | void stop(); | |
267 | ||
31f18b77 FG |
268 | int add_request(RGWHTTPClient *client, const char *method, const char *url, |
269 | bool send_data_hint = false); | |
7c673cae FG |
270 | int remove_request(RGWHTTPClient *client); |
271 | ||
272 | /* only for non threaded case */ | |
273 | int process_requests(bool wait_for_data, bool *done); | |
274 | ||
275 | int complete_requests(); | |
276 | }; | |
277 | ||
278 | #endif |