Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream_upstream_round_robin.c @ 6706:829468da49d6
Stream: style.
Explicitly initialized peer's max_conns for upstreams created with
variables similar to how it's done in http.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 29 Sep 2016 12:59:13 +0300 |
parents | 29bf0dbc0a77 |
children | fd5c2781460b |
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; |
6706 | 350 peer[0].max_conns = 0; |
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351 peer[0].max_fails = 1; |
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352 peer[0].fail_timeout = 10; |
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353 peers->peer = peer; |
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354 |
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355 } else { |
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356 peerp = &peers->peer; |
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357 |
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358 for (i = 0; i < ur->naddrs; i++) { |
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359 |
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360 socklen = ur->addrs[i].socklen; |
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361 |
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362 sockaddr = ngx_palloc(s->connection->pool, socklen); |
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363 if (sockaddr == NULL) { |
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364 return NGX_ERROR; |
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365 } |
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366 |
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367 ngx_memcpy(sockaddr, ur->addrs[i].sockaddr, socklen); |
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368 ngx_inet_set_port(sockaddr, ur->port); |
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369 |
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370 p = ngx_pnalloc(s->connection->pool, NGX_SOCKADDR_STRLEN); |
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371 if (p == NULL) { |
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372 return NGX_ERROR; |
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373 } |
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374 |
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375 len = ngx_sock_ntop(sockaddr, socklen, p, NGX_SOCKADDR_STRLEN, 1); |
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376 |
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377 peer[i].sockaddr = sockaddr; |
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378 peer[i].socklen = socklen; |
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379 peer[i].name.len = len; |
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380 peer[i].name.data = p; |
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381 peer[i].weight = 1; |
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382 peer[i].effective_weight = 1; |
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383 peer[i].current_weight = 0; |
6706 | 384 peer[i].max_conns = 0; |
6643
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385 peer[i].max_fails = 1; |
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386 peer[i].fail_timeout = 10; |
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387 *peerp = &peer[i]; |
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388 peerp = &peer[i].next; |
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389 } |
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390 } |
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391 |
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392 rrp->peers = peers; |
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393 rrp->current = NULL; |
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394 |
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395 if (rrp->peers->number <= 8 * sizeof(uintptr_t)) { |
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396 rrp->tried = &rrp->data; |
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397 rrp->data = 0; |
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398 |
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399 } else { |
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400 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) |
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401 / (8 * sizeof(uintptr_t)); |
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402 |
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403 rrp->tried = ngx_pcalloc(s->connection->pool, n * sizeof(uintptr_t)); |
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404 if (rrp->tried == NULL) { |
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405 return NGX_ERROR; |
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406 } |
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407 } |
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408 |
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409 s->upstream->peer.get = ngx_stream_upstream_get_round_robin_peer; |
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410 s->upstream->peer.free = ngx_stream_upstream_free_round_robin_peer; |
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411 s->upstream->peer.tries = ngx_stream_upstream_tries(rrp->peers); |
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412 #if (NGX_STREAM_SSL) |
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413 s->upstream->peer.set_session = ngx_stream_upstream_empty_set_session; |
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414 s->upstream->peer.save_session = ngx_stream_upstream_empty_save_session; |
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415 #endif |
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416 |
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417 return NGX_OK; |
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418 } |
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419 |
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420 |
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421 ngx_int_t |
6115 | 422 ngx_stream_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data) |
423 { | |
424 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
425 | |
426 ngx_int_t rc; | |
427 ngx_uint_t i, n; | |
428 ngx_stream_upstream_rr_peer_t *peer; | |
429 ngx_stream_upstream_rr_peers_t *peers; | |
430 | |
431 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
432 "get rr peer, try: %ui", pc->tries); | |
433 | |
434 pc->connection = NULL; | |
435 | |
436 peers = rrp->peers; | |
437 ngx_stream_upstream_rr_peers_wlock(peers); | |
438 | |
439 if (peers->single) { | |
440 peer = peers->peer; | |
441 | |
442 if (peer->down) { | |
443 goto failed; | |
444 } | |
445 | |
6705 | 446 if (peer->max_conns && peer->conns >= peer->max_conns) { |
447 goto failed; | |
448 } | |
449 | |
6115 | 450 rrp->current = peer; |
451 | |
452 } else { | |
453 | |
454 /* there are several peers */ | |
455 | |
456 peer = ngx_stream_upstream_get_peer(rrp); | |
457 | |
458 if (peer == NULL) { | |
459 goto failed; | |
460 } | |
461 | |
462 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
463 "get rr peer, current: %p %i", | |
464 peer, peer->current_weight); | |
465 } | |
466 | |
467 pc->sockaddr = peer->sockaddr; | |
468 pc->socklen = peer->socklen; | |
469 pc->name = &peer->name; | |
470 | |
471 peer->conns++; | |
472 | |
473 ngx_stream_upstream_rr_peers_unlock(peers); | |
474 | |
475 return NGX_OK; | |
476 | |
477 failed: | |
478 | |
479 if (peers->next) { | |
480 | |
481 ngx_log_debug0(NGX_LOG_DEBUG_STREAM, pc->log, 0, "backup servers"); | |
482 | |
483 rrp->peers = peers->next; | |
484 | |
485 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) | |
486 / (8 * sizeof(uintptr_t)); | |
487 | |
488 for (i = 0; i < n; i++) { | |
6474 | 489 rrp->tried[i] = 0; |
6115 | 490 } |
491 | |
492 ngx_stream_upstream_rr_peers_unlock(peers); | |
493 | |
494 rc = ngx_stream_upstream_get_round_robin_peer(pc, rrp); | |
495 | |
496 if (rc != NGX_BUSY) { | |
497 return rc; | |
498 } | |
499 | |
500 ngx_stream_upstream_rr_peers_wlock(peers); | |
501 } | |
502 | |
503 ngx_stream_upstream_rr_peers_unlock(peers); | |
504 | |
505 pc->name = peers->name; | |
506 | |
507 return NGX_BUSY; | |
508 } | |
509 | |
510 | |
511 static ngx_stream_upstream_rr_peer_t * | |
512 ngx_stream_upstream_get_peer(ngx_stream_upstream_rr_peer_data_t *rrp) | |
513 { | |
514 time_t now; | |
515 uintptr_t m; | |
516 ngx_int_t total; | |
517 ngx_uint_t i, n, p; | |
518 ngx_stream_upstream_rr_peer_t *peer, *best; | |
519 | |
520 now = ngx_time(); | |
521 | |
522 best = NULL; | |
523 total = 0; | |
524 | |
525 #if (NGX_SUPPRESS_WARN) | |
526 p = 0; | |
527 #endif | |
528 | |
529 for (peer = rrp->peers->peer, i = 0; | |
530 peer; | |
531 peer = peer->next, i++) | |
532 { | |
533 n = i / (8 * sizeof(uintptr_t)); | |
534 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); | |
535 | |
536 if (rrp->tried[n] & m) { | |
537 continue; | |
538 } | |
539 | |
540 if (peer->down) { | |
541 continue; | |
542 } | |
543 | |
544 if (peer->max_fails | |
545 && peer->fails >= peer->max_fails | |
546 && now - peer->checked <= peer->fail_timeout) | |
547 { | |
548 continue; | |
549 } | |
550 | |
6705 | 551 if (peer->max_conns && peer->conns >= peer->max_conns) { |
552 continue; | |
553 } | |
554 | |
6115 | 555 peer->current_weight += peer->effective_weight; |
556 total += peer->effective_weight; | |
557 | |
558 if (peer->effective_weight < peer->weight) { | |
559 peer->effective_weight++; | |
560 } | |
561 | |
562 if (best == NULL || peer->current_weight > best->current_weight) { | |
563 best = peer; | |
564 p = i; | |
565 } | |
566 } | |
567 | |
568 if (best == NULL) { | |
569 return NULL; | |
570 } | |
571 | |
572 rrp->current = best; | |
573 | |
574 n = p / (8 * sizeof(uintptr_t)); | |
575 m = (uintptr_t) 1 << p % (8 * sizeof(uintptr_t)); | |
576 | |
577 rrp->tried[n] |= m; | |
578 | |
579 best->current_weight -= total; | |
580 | |
581 if (now - best->checked > best->fail_timeout) { | |
582 best->checked = now; | |
583 } | |
584 | |
585 return best; | |
586 } | |
587 | |
588 | |
589 void | |
590 ngx_stream_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data, | |
591 ngx_uint_t state) | |
592 { | |
593 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
594 | |
595 time_t now; | |
596 ngx_stream_upstream_rr_peer_t *peer; | |
597 | |
598 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
599 "free rr peer %ui %ui", pc->tries, state); | |
600 | |
601 peer = rrp->current; | |
602 | |
603 ngx_stream_upstream_rr_peers_rlock(rrp->peers); | |
604 ngx_stream_upstream_rr_peer_lock(rrp->peers, peer); | |
605 | |
606 if (rrp->peers->single) { | |
607 peer->conns--; | |
608 | |
609 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); | |
610 ngx_stream_upstream_rr_peers_unlock(rrp->peers); | |
611 | |
612 pc->tries = 0; | |
613 return; | |
614 } | |
615 | |
616 if (state & NGX_PEER_FAILED) { | |
617 now = ngx_time(); | |
618 | |
619 peer->fails++; | |
620 peer->accessed = now; | |
621 peer->checked = now; | |
622 | |
623 if (peer->max_fails) { | |
624 peer->effective_weight -= peer->weight / peer->max_fails; | |
6154
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625 |
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626 if (peer->fails >= peer->max_fails) { |
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627 ngx_log_error(NGX_LOG_WARN, pc->log, 0, |
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628 "upstream server temporarily disabled"); |
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629 } |
6115 | 630 } |
631 | |
632 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
633 "free rr peer failed: %p %i", | |
634 peer, peer->effective_weight); | |
635 | |
636 if (peer->effective_weight < 0) { | |
637 peer->effective_weight = 0; | |
638 } | |
639 | |
640 } else { | |
641 | |
642 /* mark peer live if check passed */ | |
643 | |
644 if (peer->accessed < peer->checked) { | |
645 peer->fails = 0; | |
646 } | |
647 } | |
648 | |
649 peer->conns--; | |
650 | |
651 ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer); | |
652 ngx_stream_upstream_rr_peers_unlock(rrp->peers); | |
653 | |
654 if (pc->tries) { | |
655 pc->tries--; | |
656 } | |
657 } | |
658 | |
659 | |
660 #if (NGX_STREAM_SSL) | |
661 | |
662 static ngx_int_t | |
663 ngx_stream_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc, | |
664 void *data) | |
665 { | |
666 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
667 | |
668 ngx_int_t rc; | |
669 ngx_ssl_session_t *ssl_session; | |
670 ngx_stream_upstream_rr_peer_t *peer; | |
671 #if (NGX_STREAM_UPSTREAM_ZONE) | |
672 int len; | |
673 #if OPENSSL_VERSION_NUMBER >= 0x0090707fL | |
674 const | |
675 #endif | |
676 u_char *p; | |
677 ngx_stream_upstream_rr_peers_t *peers; | |
678 u_char buf[NGX_SSL_MAX_SESSION_SIZE]; | |
679 #endif | |
680 | |
681 peer = rrp->current; | |
682 | |
683 #if (NGX_STREAM_UPSTREAM_ZONE) | |
684 peers = rrp->peers; | |
685 | |
686 if (peers->shpool) { | |
687 ngx_stream_upstream_rr_peers_rlock(peers); | |
688 ngx_stream_upstream_rr_peer_lock(peers, peer); | |
689 | |
690 if (peer->ssl_session == NULL) { | |
691 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
692 ngx_stream_upstream_rr_peers_unlock(peers); | |
693 return NGX_OK; | |
694 } | |
695 | |
696 len = peer->ssl_session_len; | |
697 | |
698 ngx_memcpy(buf, peer->ssl_session, len); | |
699 | |
700 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
701 ngx_stream_upstream_rr_peers_unlock(peers); | |
702 | |
703 p = buf; | |
704 ssl_session = d2i_SSL_SESSION(NULL, &p, len); | |
705 | |
706 rc = ngx_ssl_set_session(pc->connection, ssl_session); | |
707 | |
708 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
709 "set session: %p", ssl_session); | |
710 | |
711 ngx_ssl_free_session(ssl_session); | |
712 | |
713 return rc; | |
714 } | |
715 #endif | |
716 | |
717 ssl_session = peer->ssl_session; | |
718 | |
719 rc = ngx_ssl_set_session(pc->connection, ssl_session); | |
720 | |
721 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
722 "set session: %p", ssl_session); | |
723 | |
724 return rc; | |
725 } | |
726 | |
727 | |
728 static void | |
729 ngx_stream_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc, | |
730 void *data) | |
731 { | |
732 ngx_stream_upstream_rr_peer_data_t *rrp = data; | |
733 | |
734 ngx_ssl_session_t *old_ssl_session, *ssl_session; | |
735 ngx_stream_upstream_rr_peer_t *peer; | |
736 #if (NGX_STREAM_UPSTREAM_ZONE) | |
737 int len; | |
738 u_char *p; | |
739 ngx_stream_upstream_rr_peers_t *peers; | |
740 u_char buf[NGX_SSL_MAX_SESSION_SIZE]; | |
741 #endif | |
742 | |
743 #if (NGX_STREAM_UPSTREAM_ZONE) | |
744 peers = rrp->peers; | |
745 | |
746 if (peers->shpool) { | |
747 | |
748 ssl_session = SSL_get0_session(pc->connection->ssl->connection); | |
749 | |
750 if (ssl_session == NULL) { | |
751 return; | |
752 } | |
753 | |
754 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
755 "save session: %p", ssl_session); | |
756 | |
757 len = i2d_SSL_SESSION(ssl_session, NULL); | |
758 | |
759 /* do not cache too big session */ | |
760 | |
761 if (len > NGX_SSL_MAX_SESSION_SIZE) { | |
762 return; | |
763 } | |
764 | |
765 p = buf; | |
766 (void) i2d_SSL_SESSION(ssl_session, &p); | |
767 | |
768 peer = rrp->current; | |
769 | |
770 ngx_stream_upstream_rr_peers_rlock(peers); | |
771 ngx_stream_upstream_rr_peer_lock(peers, peer); | |
772 | |
773 if (len > peer->ssl_session_len) { | |
774 ngx_shmtx_lock(&peers->shpool->mutex); | |
775 | |
776 if (peer->ssl_session) { | |
777 ngx_slab_free_locked(peers->shpool, peer->ssl_session); | |
778 } | |
779 | |
780 peer->ssl_session = ngx_slab_alloc_locked(peers->shpool, len); | |
781 | |
782 ngx_shmtx_unlock(&peers->shpool->mutex); | |
783 | |
784 if (peer->ssl_session == NULL) { | |
785 peer->ssl_session_len = 0; | |
786 | |
787 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
788 ngx_stream_upstream_rr_peers_unlock(peers); | |
789 return; | |
790 } | |
791 | |
792 peer->ssl_session_len = len; | |
793 } | |
794 | |
795 ngx_memcpy(peer->ssl_session, buf, len); | |
796 | |
797 ngx_stream_upstream_rr_peer_unlock(peers, peer); | |
798 ngx_stream_upstream_rr_peers_unlock(peers); | |
799 | |
800 return; | |
801 } | |
802 #endif | |
803 | |
804 ssl_session = ngx_ssl_get_session(pc->connection); | |
805 | |
806 if (ssl_session == NULL) { | |
807 return; | |
808 } | |
809 | |
810 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
811 "save session: %p", ssl_session); | |
812 | |
813 peer = rrp->current; | |
814 | |
815 old_ssl_session = peer->ssl_session; | |
816 peer->ssl_session = ssl_session; | |
817 | |
818 if (old_ssl_session) { | |
819 | |
820 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
821 "old session: %p", old_ssl_session); | |
822 | |
823 /* TODO: may block */ | |
824 | |
825 ngx_ssl_free_session(old_ssl_session); | |
826 } | |
827 } | |
828 | |
6643
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829 |
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830 static ngx_int_t |
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831 ngx_stream_upstream_empty_set_session(ngx_peer_connection_t *pc, void *data) |
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832 { |
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833 return NGX_OK; |
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834 } |
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835 |
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836 |
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837 static void |
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838 ngx_stream_upstream_empty_save_session(ngx_peer_connection_t *pc, void *data) |
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839 { |
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840 return; |
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841 } |
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842 |
6115 | 843 #endif |