Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream_upstream_round_robin.c @ 6705:29bf0dbc0a77
Upstream: max_conns.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Thu, 22 Sep 2016 19:32:47 +0300 |
parents | a44ba757851d |
children | 829468da49d6 |
rev | line source |
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6115 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 * Copyright (C) Nginx, Inc. | |
5 */ | |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_stream.h> | |
11 | |
12 | |
13 #define ngx_stream_upstream_tries(p) ((p)->number \ | |
14 + ((p)->next ? (p)->next->number : 0)) | |
15 | |
16 | |
17 static ngx_stream_upstream_rr_peer_t *ngx_stream_upstream_get_peer( | |
18 ngx_stream_upstream_rr_peer_data_t *rrp); | |
19 | |
20 #if (NGX_STREAM_SSL) | |
21 | |
22 static ngx_int_t ngx_stream_upstream_set_round_robin_peer_session( | |
23 ngx_peer_connection_t *pc, void *data); | |
24 static void ngx_stream_upstream_save_round_robin_peer_session( | |
25 ngx_peer_connection_t *pc, void *data); | |
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26 static ngx_int_t ngx_stream_upstream_empty_set_session( |
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27 ngx_peer_connection_t *pc, void *data); |
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28 static void ngx_stream_upstream_empty_save_session(ngx_peer_connection_t *pc, |
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29 void *data); |
6115 | 30 |
31 #endif | |
32 | |
33 | |
34 ngx_int_t | |
35 ngx_stream_upstream_init_round_robin(ngx_conf_t *cf, | |
36 ngx_stream_upstream_srv_conf_t *us) | |
37 { | |
38 ngx_url_t u; | |
39 ngx_uint_t i, j, n, w; | |
40 ngx_stream_upstream_server_t *server; | |
41 ngx_stream_upstream_rr_peer_t *peer, **peerp; | |
42 ngx_stream_upstream_rr_peers_t *peers, *backup; | |
43 | |
44 us->peer.init = ngx_stream_upstream_init_round_robin_peer; | |
45 | |
46 if (us->servers) { | |
47 server = us->servers->elts; | |
48 | |
49 n = 0; | |
50 w = 0; | |
51 | |
52 for (i = 0; i < us->servers->nelts; i++) { | |
53 if (server[i].backup) { | |
54 continue; | |
55 } | |
56 | |
57 n += server[i].naddrs; | |
58 w += server[i].naddrs * server[i].weight; | |
59 } | |
60 | |
61 if (n == 0) { | |
62 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
63 "no servers in upstream \"%V\" in %s:%ui", | |
64 &us->host, us->file_name, us->line); | |
65 return NGX_ERROR; | |
66 } | |
67 | |
68 peers = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
69 if (peers == NULL) { | |
70 return NGX_ERROR; | |
71 } | |
72 | |
73 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
74 if (peer == NULL) { | |
75 return NGX_ERROR; | |
76 } | |
77 | |
78 peers->single = (n == 1); | |
79 peers->number = n; | |
80 peers->weighted = (w != n); | |
81 peers->total_weight = w; | |
82 peers->name = &us->host; | |
83 | |
84 n = 0; | |
85 peerp = &peers->peer; | |
86 | |
87 for (i = 0; i < us->servers->nelts; i++) { | |
88 if (server[i].backup) { | |
89 continue; | |
90 } | |
91 | |
92 for (j = 0; j < server[i].naddrs; j++) { | |
93 peer[n].sockaddr = server[i].addrs[j].sockaddr; | |
94 peer[n].socklen = server[i].addrs[j].socklen; | |
95 peer[n].name = server[i].addrs[j].name; | |
96 peer[n].weight = server[i].weight; | |
97 peer[n].effective_weight = server[i].weight; | |
98 peer[n].current_weight = 0; | |
6705 | 99 peer[n].max_conns = server[i].max_conns; |
6115 | 100 peer[n].max_fails = server[i].max_fails; |
101 peer[n].fail_timeout = server[i].fail_timeout; | |
102 peer[n].down = server[i].down; | |
103 peer[n].server = server[i].name; | |
104 | |
105 *peerp = &peer[n]; | |
106 peerp = &peer[n].next; | |
107 n++; | |
108 } | |
109 } | |
110 | |
111 us->peer.data = peers; | |
112 | |
113 /* backup servers */ | |
114 | |
115 n = 0; | |
116 w = 0; | |
117 | |
118 for (i = 0; i < us->servers->nelts; i++) { | |
119 if (!server[i].backup) { | |
120 continue; | |
121 } | |
122 | |
123 n += server[i].naddrs; | |
124 w += server[i].naddrs * server[i].weight; | |
125 } | |
126 | |
127 if (n == 0) { | |
128 return NGX_OK; | |
129 } | |
130 | |
131 backup = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
132 if (backup == NULL) { | |
133 return NGX_ERROR; | |
134 } | |
135 | |
136 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
137 if (peer == NULL) { | |
138 return NGX_ERROR; | |
139 } | |
140 | |
141 peers->single = 0; | |
142 backup->single = 0; | |
143 backup->number = n; | |
144 backup->weighted = (w != n); | |
145 backup->total_weight = w; | |
146 backup->name = &us->host; | |
147 | |
148 n = 0; | |
149 peerp = &backup->peer; | |
150 | |
151 for (i = 0; i < us->servers->nelts; i++) { | |
152 if (!server[i].backup) { | |
153 continue; | |
154 } | |
155 | |
156 for (j = 0; j < server[i].naddrs; j++) { | |
157 peer[n].sockaddr = server[i].addrs[j].sockaddr; | |
158 peer[n].socklen = server[i].addrs[j].socklen; | |
159 peer[n].name = server[i].addrs[j].name; | |
160 peer[n].weight = server[i].weight; | |
161 peer[n].effective_weight = server[i].weight; | |
162 peer[n].current_weight = 0; | |
6705 | 163 peer[n].max_conns = server[i].max_conns; |
6115 | 164 peer[n].max_fails = server[i].max_fails; |
165 peer[n].fail_timeout = server[i].fail_timeout; | |
166 peer[n].down = server[i].down; | |
167 peer[n].server = server[i].name; | |
168 | |
169 *peerp = &peer[n]; | |
170 peerp = &peer[n].next; | |
171 n++; | |
172 } | |
173 } | |
174 | |
175 peers->next = backup; | |
176 | |
177 return NGX_OK; | |
178 } | |
179 | |
180 | |
181 /* an upstream implicitly defined by proxy_pass, etc. */ | |
182 | |
183 if (us->port == 0) { | |
184 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
185 "no port in upstream \"%V\" in %s:%ui", | |
186 &us->host, us->file_name, us->line); | |
187 return NGX_ERROR; | |
188 } | |
189 | |
190 ngx_memzero(&u, sizeof(ngx_url_t)); | |
191 | |
192 u.host = us->host; | |
193 u.port = us->port; | |
194 | |
195 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) { | |
196 if (u.err) { | |
197 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
198 "%s in upstream \"%V\" in %s:%ui", | |
199 u.err, &us->host, us->file_name, us->line); | |
200 } | |
201 | |
202 return NGX_ERROR; | |
203 } | |
204 | |
205 n = u.naddrs; | |
206 | |
207 peers = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t)); | |
208 if (peers == NULL) { | |
209 return NGX_ERROR; | |
210 } | |
211 | |
212 peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n); | |
213 if (peer == NULL) { | |
214 return NGX_ERROR; | |
215 } | |
216 | |
217 peers->single = (n == 1); | |
218 peers->number = n; | |
219 peers->weighted = 0; | |
220 peers->total_weight = n; | |
221 peers->name = &us->host; | |
222 | |
223 peerp = &peers->peer; | |
224 | |
225 for (i = 0; i < u.naddrs; i++) { | |
226 peer[i].sockaddr = u.addrs[i].sockaddr; | |
227 peer[i].socklen = u.addrs[i].socklen; | |
228 peer[i].name = u.addrs[i].name; | |
229 peer[i].weight = 1; | |
230 peer[i].effective_weight = 1; | |
231 peer[i].current_weight = 0; | |
6705 | 232 peer[i].max_conns = 0; |
6115 | 233 peer[i].max_fails = 1; |
234 peer[i].fail_timeout = 10; | |
235 *peerp = &peer[i]; | |
236 peerp = &peer[i].next; | |
237 } | |
238 | |
239 us->peer.data = peers; | |
240 | |
241 /* implicitly defined upstream has no backup servers */ | |
242 | |
243 return NGX_OK; | |
244 } | |
245 | |
246 | |
247 ngx_int_t | |
248 ngx_stream_upstream_init_round_robin_peer(ngx_stream_session_t *s, | |
249 ngx_stream_upstream_srv_conf_t *us) | |
250 { | |
251 ngx_uint_t n; | |
252 ngx_stream_upstream_rr_peer_data_t *rrp; | |
253 | |
254 rrp = s->upstream->peer.data; | |
255 | |
256 if (rrp == NULL) { | |
257 rrp = ngx_palloc(s->connection->pool, | |
258 sizeof(ngx_stream_upstream_rr_peer_data_t)); | |
259 if (rrp == NULL) { | |
260 return NGX_ERROR; | |
261 } | |
262 | |
263 s->upstream->peer.data = rrp; | |
264 } | |
265 | |
266 rrp->peers = us->peer.data; | |
267 rrp->current = NULL; | |
268 | |
269 n = rrp->peers->number; | |
270 | |
271 if (rrp->peers->next && rrp->peers->next->number > n) { | |
272 n = rrp->peers->next->number; | |
273 } | |
274 | |
275 if (n <= 8 * sizeof(uintptr_t)) { | |
276 rrp->tried = &rrp->data; | |
277 rrp->data = 0; | |
278 | |
279 } else { | |
280 n = (n + (8 * sizeof(uintptr_t) - 1)) / (8 * sizeof(uintptr_t)); | |
281 | |
282 rrp->tried = ngx_pcalloc(s->connection->pool, n * sizeof(uintptr_t)); | |
283 if (rrp->tried == NULL) { | |
284 return NGX_ERROR; | |
285 } | |
286 } | |
287 | |
288 s->upstream->peer.get = ngx_stream_upstream_get_round_robin_peer; | |
289 s->upstream->peer.free = ngx_stream_upstream_free_round_robin_peer; | |
290 s->upstream->peer.tries = ngx_stream_upstream_tries(rrp->peers); | |
291 #if (NGX_STREAM_SSL) | |
292 s->upstream->peer.set_session = | |
293 ngx_stream_upstream_set_round_robin_peer_session; | |
294 s->upstream->peer.save_session = | |
295 ngx_stream_upstream_save_round_robin_peer_session; | |
296 #endif | |
297 | |
298 return NGX_OK; | |
299 } | |
300 | |
301 | |
302 ngx_int_t | |
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303 ngx_stream_upstream_create_round_robin_peer(ngx_stream_session_t *s, |
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304 ngx_stream_upstream_resolved_t *ur) |
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305 { |
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306 u_char *p; |
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307 size_t len; |
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308 socklen_t socklen; |
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309 ngx_uint_t i, n; |
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310 struct sockaddr *sockaddr; |
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311 ngx_stream_upstream_rr_peer_t *peer, **peerp; |
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312 ngx_stream_upstream_rr_peers_t *peers; |
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313 ngx_stream_upstream_rr_peer_data_t *rrp; |
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314 |
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315 rrp = s->upstream->peer.data; |
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316 |
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317 if (rrp == NULL) { |
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318 rrp = ngx_palloc(s->connection->pool, |
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319 sizeof(ngx_stream_upstream_rr_peer_data_t)); |
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320 if (rrp == NULL) { |
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321 return NGX_ERROR; |
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322 } |
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323 |
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324 s->upstream->peer.data = rrp; |
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325 } |
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326 |
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327 peers = ngx_pcalloc(s->connection->pool, |
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328 sizeof(ngx_stream_upstream_rr_peers_t)); |
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329 if (peers == NULL) { |
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330 return NGX_ERROR; |
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331 } |
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332 |
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333 peer = ngx_pcalloc(s->connection->pool, |
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334 sizeof(ngx_stream_upstream_rr_peer_t) * ur->naddrs); |
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335 if (peer == NULL) { |
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336 return NGX_ERROR; |
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337 } |
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338 |
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339 peers->single = (ur->naddrs == 1); |
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340 peers->number = ur->naddrs; |
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341 peers->name = &ur->host; |
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342 |
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343 if (ur->sockaddr) { |
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344 peer[0].sockaddr = ur->sockaddr; |
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345 peer[0].socklen = ur->socklen; |
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346 peer[0].name = ur->host; |
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347 peer[0].weight = 1; |
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348 peer[0].effective_weight = 1; |
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349 peer[0].current_weight = 0; |
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350 peer[0].max_fails = 1; |
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351 peer[0].fail_timeout = 10; |
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352 peers->peer = peer; |
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353 |
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354 } else { |
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355 peerp = &peers->peer; |
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356 |
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357 for (i = 0; i < ur->naddrs; i++) { |
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358 |
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359 socklen = ur->addrs[i].socklen; |
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360 |
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361 sockaddr = ngx_palloc(s->connection->pool, socklen); |
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362 if (sockaddr == NULL) { |
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363 return NGX_ERROR; |
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364 } |
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365 |
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366 ngx_memcpy(sockaddr, ur->addrs[i].sockaddr, socklen); |
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367 ngx_inet_set_port(sockaddr, ur->port); |
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368 |
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369 p = ngx_pnalloc(s->connection->pool, NGX_SOCKADDR_STRLEN); |
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370 if (p == NULL) { |
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371 return NGX_ERROR; |
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372 } |
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373 |
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374 len = ngx_sock_ntop(sockaddr, socklen, p, NGX_SOCKADDR_STRLEN, 1); |
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375 |
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376 peer[i].sockaddr = sockaddr; |
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377 peer[i].socklen = socklen; |
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378 peer[i].name.len = len; |
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379 peer[i].name.data = p; |
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380 peer[i].weight = 1; |
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381 peer[i].effective_weight = 1; |
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382 peer[i].current_weight = 0; |
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383 peer[i].max_fails = 1; |
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384 peer[i].fail_timeout = 10; |
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385 *peerp = &peer[i]; |
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386 peerp = &peer[i].next; |
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387 } |
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388 } |
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389 |
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390 rrp->peers = peers; |
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391 rrp->current = NULL; |
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392 |
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393 if (rrp->peers->number <= 8 * sizeof(uintptr_t)) { |
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394 rrp->tried = &rrp->data; |
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395 rrp->data = 0; |
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396 |
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397 } else { |
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398 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) |
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399 / (8 * sizeof(uintptr_t)); |
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400 |
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401 rrp->tried = ngx_pcalloc(s->connection->pool, n * sizeof(uintptr_t)); |
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402 if (rrp->tried == NULL) { |
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403 return NGX_ERROR; |
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404 } |
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405 } |
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406 |
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407 s->upstream->peer.get = ngx_stream_upstream_get_round_robin_peer; |
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408 s->upstream->peer.free = ngx_stream_upstream_free_round_robin_peer; |
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409 s->upstream->peer.tries = ngx_stream_upstream_tries(rrp->peers); |
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410 #if (NGX_STREAM_SSL) |
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411 s->upstream->peer.set_session = ngx_stream_upstream_empty_set_session; |
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412 s->upstream->peer.save_session = ngx_stream_upstream_empty_save_session; |
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413 #endif |
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414 |
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415 return NGX_OK; |
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416 } |
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417 |
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418 |
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419 ngx_int_t |
6115 | 420 ngx_stream_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data) |
421 { | |
422 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
423 | |
424 ngx_int_t rc; | |
425 ngx_uint_t i, n; | |
426 ngx_stream_upstream_rr_peer_t *peer; | |
427 ngx_stream_upstream_rr_peers_t *peers; | |
428 | |
429 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
430 "get rr peer, try: %ui", pc->tries); | |
431 | |
432 pc->connection = NULL; | |
433 | |
434 peers = rrp->peers; | |
435 ngx_stream_upstream_rr_peers_wlock(peers); | |
436 | |
437 if (peers->single) { | |
438 peer = peers->peer; | |
439 | |
440 if (peer->down) { | |
441 goto failed; | |
442 } | |
443 | |
6705 | 444 if (peer->max_conns && peer->conns >= peer->max_conns) { |
445 goto failed; | |
446 } | |
447 | |
6115 | 448 rrp->current = peer; |
449 | |
450 } else { | |
451 | |
452 /* there are several peers */ | |
453 | |
454 peer = ngx_stream_upstream_get_peer(rrp); | |
455 | |
456 if (peer == NULL) { | |
457 goto failed; | |
458 } | |
459 | |
460 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
461 "get rr peer, current: %p %i", | |
462 peer, peer->current_weight); | |
463 } | |
464 | |
465 pc->sockaddr = peer->sockaddr; | |
466 pc->socklen = peer->socklen; | |
467 pc->name = &peer->name; | |
468 | |
469 peer->conns++; | |
470 | |
471 ngx_stream_upstream_rr_peers_unlock(peers); | |
472 | |
473 return NGX_OK; | |
474 | |
475 failed: | |
476 | |
477 if (peers->next) { | |
478 | |
479 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, pc->log, 0, "backup servers"); | |
480 | |
481 rrp->peers = peers->next; | |
482 | |
483 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) | |
484 / (8 * sizeof(uintptr_t)); | |
485 | |
486 for (i = 0; i < n; i++) { | |
6474 | 487 rrp->tried[i] = 0; |
6115 | 488 } |
489 | |
490 ngx_stream_upstream_rr_peers_unlock(peers); | |
491 | |
492 rc = ngx_stream_upstream_get_round_robin_peer(pc, rrp); | |
493 | |
494 if (rc != NGX_BUSY) { | |
495 return rc; | |
496 } | |
497 | |
498 ngx_stream_upstream_rr_peers_wlock(peers); | |
499 } | |
500 | |
501 ngx_stream_upstream_rr_peers_unlock(peers); | |
502 | |
503 pc->name = peers->name; | |
504 | |
505 return NGX_BUSY; | |
506 } | |
507 | |
508 | |
509 static ngx_stream_upstream_rr_peer_t * | |
510 ngx_stream_upstream_get_peer(ngx_stream_upstream_rr_peer_data_t *rrp) | |
511 { | |
512 time_t now; | |
513 uintptr_t m; | |
514 ngx_int_t total; | |
515 ngx_uint_t i, n, p; | |
516 ngx_stream_upstream_rr_peer_t *peer, *best; | |
517 | |
518 now = ngx_time(); | |
519 | |
520 best = NULL; | |
521 total = 0; | |
522 | |
523 #if (NGX_SUPPRESS_WARN) | |
524 p = 0; | |
525 #endif | |
526 | |
527 for (peer = rrp->peers->peer, i = 0; | |
528 peer; | |
529 peer = peer->next, i++) | |
530 { | |
531 n = i / (8 * sizeof(uintptr_t)); | |
532 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); | |
533 | |
534 if (rrp->tried[n] & m) { | |
535 continue; | |
536 } | |
537 | |
538 if (peer->down) { | |
539 continue; | |
540 } | |
541 | |
542 if (peer->max_fails | |
543 && peer->fails >= peer->max_fails | |
544 && now - peer->checked <= peer->fail_timeout) | |
545 { | |
546 continue; | |
547 } | |
548 | |
6705 | 549 if (peer->max_conns && peer->conns >= peer->max_conns) { |
550 continue; | |
551 } | |
552 | |
6115 | 553 peer->current_weight += peer->effective_weight; |
554 total += peer->effective_weight; | |
555 | |
556 if (peer->effective_weight < peer->weight) { | |
557 peer->effective_weight++; | |
558 } | |
559 | |
560 if (best == NULL || peer->current_weight > best->current_weight) { | |
561 best = peer; | |
562 p = i; | |
563 } | |
564 } | |
565 | |
566 if (best == NULL) { | |
567 return NULL; | |
568 } | |
569 | |
570 rrp->current = best; | |
571 | |
572 n = p / (8 * sizeof(uintptr_t)); | |
573 m = (uintptr_t) 1 << p % (8 * sizeof(uintptr_t)); | |
574 | |
575 rrp->tried[n] |= m; | |
576 | |
577 best->current_weight -= total; | |
578 | |
579 if (now - best->checked > best->fail_timeout) { | |
580 best->checked = now; | |
581 } | |
582 | |
583 return best; | |
584 } | |
585 | |
586 | |
587 void | |
588 ngx_stream_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data, | |
589 ngx_uint_t state) | |
590 { | |
591 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
592 | |
593 time_t now; | |
594 ngx_stream_upstream_rr_peer_t *peer; | |
595 | |
596 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
597 "free rr peer %ui %ui", pc->tries, state); | |
598 | |
599 peer = rrp->current; | |
600 | |
601 ngx_stream_upstream_rr_peers_rlock(rrp->peers); | |
602 ngx_stream_upstream_rr_peer_lock(rrp->peers, peer); | |
603 | |
604 if (rrp->peers->single) { | |
605 peer->conns--; | |
606 | |
607 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); | |
608 ngx_stream_upstream_rr_peers_unlock(rrp->peers); | |
609 | |
610 pc->tries = 0; | |
611 return; | |
612 } | |
613 | |
614 if (state & NGX_PEER_FAILED) { | |
615 now = ngx_time(); | |
616 | |
617 peer->fails++; | |
618 peer->accessed = now; | |
619 peer->checked = now; | |
620 | |
621 if (peer->max_fails) { | |
622 peer->effective_weight -= peer->weight / peer->max_fails; | |
6154
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623 |
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624 if (peer->fails >= peer->max_fails) { |
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625 ngx_log_error(NGX_LOG_WARN, pc->log, 0, |
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626 "upstream server temporarily disabled"); |
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627 } |
6115 | 628 } |
629 | |
630 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
631 "free rr peer failed: %p %i", | |
632 peer, peer->effective_weight); | |
633 | |
634 if (peer->effective_weight < 0) { | |
635 peer->effective_weight = 0; | |
636 } | |
637 | |
638 } else { | |
639 | |
640 /* mark peer live if check passed */ | |
641 | |
642 if (peer->accessed < peer->checked) { | |
643 peer->fails = 0; | |
644 } | |
645 } | |
646 | |
647 peer->conns--; | |
648 | |
649 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); | |
650 ngx_stream_upstream_rr_peers_unlock(rrp->peers); | |
651 | |
652 if (pc->tries) { | |
653 pc->tries--; | |
654 } | |
655 } | |
656 | |
657 | |
658 #if (NGX_STREAM_SSL) | |
659 | |
660 static ngx_int_t | |
661 ngx_stream_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc, | |
662 void *data) | |
663 { | |
664 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
665 | |
666 ngx_int_t rc; | |
667 ngx_ssl_session_t *ssl_session; | |
668 ngx_stream_upstream_rr_peer_t *peer; | |
669 #if (NGX_STREAM_UPSTREAM_ZONE) | |
670 int len; | |
671 #if OPENSSL_VERSION_NUMBER >= 0x0090707fL | |
672 const | |
673 #endif | |
674 u_char *p; | |
675 ngx_stream_upstream_rr_peers_t *peers; | |
676 u_char buf[NGX_SSL_MAX_SESSION_SIZE]; | |
677 #endif | |
678 | |
679 peer = rrp->current; | |
680 | |
681 #if (NGX_STREAM_UPSTREAM_ZONE) | |
682 peers = rrp->peers; | |
683 | |
684 if (peers->shpool) { | |
685 ngx_stream_upstream_rr_peers_rlock(peers); | |
686 ngx_stream_upstream_rr_peer_lock(peers, peer); | |
687 | |
688 if (peer->ssl_session == NULL) { | |
689 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
690 ngx_stream_upstream_rr_peers_unlock(peers); | |
691 return NGX_OK; | |
692 } | |
693 | |
694 len = peer->ssl_session_len; | |
695 | |
696 ngx_memcpy(buf, peer->ssl_session, len); | |
697 | |
698 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
699 ngx_stream_upstream_rr_peers_unlock(peers); | |
700 | |
701 p = buf; | |
702 ssl_session = d2i_SSL_SESSION(NULL, &p, len); | |
703 | |
704 rc = ngx_ssl_set_session(pc->connection, ssl_session); | |
705 | |
706 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
707 "set session: %p", ssl_session); | |
708 | |
709 ngx_ssl_free_session(ssl_session); | |
710 | |
711 return rc; | |
712 } | |
713 #endif | |
714 | |
715 ssl_session = peer->ssl_session; | |
716 | |
717 rc = ngx_ssl_set_session(pc->connection, ssl_session); | |
718 | |
719 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
720 "set session: %p", ssl_session); | |
721 | |
722 return rc; | |
723 } | |
724 | |
725 | |
726 static void | |
727 ngx_stream_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc, | |
728 void *data) | |
729 { | |
730 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
731 | |
732 ngx_ssl_session_t *old_ssl_session, *ssl_session; | |
733 ngx_stream_upstream_rr_peer_t *peer; | |
734 #if (NGX_STREAM_UPSTREAM_ZONE) | |
735 int len; | |
736 u_char *p; | |
737 ngx_stream_upstream_rr_peers_t *peers; | |
738 u_char buf[NGX_SSL_MAX_SESSION_SIZE]; | |
739 #endif | |
740 | |
741 #if (NGX_STREAM_UPSTREAM_ZONE) | |
742 peers = rrp->peers; | |
743 | |
744 if (peers->shpool) { | |
745 | |
746 ssl_session = SSL_get0_session(pc->connection->ssl->connection); | |
747 | |
748 if (ssl_session == NULL) { | |
749 return; | |
750 } | |
751 | |
752 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
753 "save session: %p", ssl_session); | |
754 | |
755 len = i2d_SSL_SESSION(ssl_session, NULL); | |
756 | |
757 /* do not cache too big session */ | |
758 | |
759 if (len > NGX_SSL_MAX_SESSION_SIZE) { | |
760 return; | |
761 } | |
762 | |
763 p = buf; | |
764 (void) i2d_SSL_SESSION(ssl_session, &p); | |
765 | |
766 peer = rrp->current; | |
767 | |
768 ngx_stream_upstream_rr_peers_rlock(peers); | |
769 ngx_stream_upstream_rr_peer_lock(peers, peer); | |
770 | |
771 if (len > peer->ssl_session_len) { | |
772 ngx_shmtx_lock(&peers->shpool->mutex); | |
773 | |
774 if (peer->ssl_session) { | |
775 ngx_slab_free_locked(peers->shpool, peer->ssl_session); | |
776 } | |
777 | |
778 peer->ssl_session = ngx_slab_alloc_locked(peers->shpool, len); | |
779 | |
780 ngx_shmtx_unlock(&peers->shpool->mutex); | |
781 | |
782 if (peer->ssl_session == NULL) { | |
783 peer->ssl_session_len = 0; | |
784 | |
785 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
786 ngx_stream_upstream_rr_peers_unlock(peers); | |
787 return; | |
788 } | |
789 | |
790 peer->ssl_session_len = len; | |
791 } | |
792 | |
793 ngx_memcpy(peer->ssl_session, buf, len); | |
794 | |
795 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
796 ngx_stream_upstream_rr_peers_unlock(peers); | |
797 | |
798 return; | |
799 } | |
800 #endif | |
801 | |
802 ssl_session = ngx_ssl_get_session(pc->connection); | |
803 | |
804 if (ssl_session == NULL) { | |
805 return; | |
806 } | |
807 | |
808 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
809 "save session: %p", ssl_session); | |
810 | |
811 peer = rrp->current; | |
812 | |
813 old_ssl_session = peer->ssl_session; | |
814 peer->ssl_session = ssl_session; | |
815 | |
816 if (old_ssl_session) { | |
817 | |
818 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
819 "old session: %p", old_ssl_session); | |
820 | |
821 /* TODO: may block */ | |
822 | |
823 ngx_ssl_free_session(old_ssl_session); | |
824 } | |
825 } | |
826 | |
6643
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827 |
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828 static ngx_int_t |
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829 ngx_stream_upstream_empty_set_session(ngx_peer_connection_t *pc, void *data) |
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830 { |
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831 return NGX_OK; |
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832 } |
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833 |
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834 |
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835 static void |
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836 ngx_stream_upstream_empty_save_session(ngx_peer_connection_t *pc, void *data) |
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837 { |
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838 return; |
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839 } |
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840 |
6115 | 841 #endif |