Mercurial > hg > nginx-quic
annotate src/http/ngx_http_upstream_round_robin.c @ 5717:efc84a5723b3
Upstream: generic hash module.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Mon, 02 Jun 2014 16:16:22 +0400 |
parents | 07dd5bd222ac |
children | ab540dd44528 |
rev | line source |
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884 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
884 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.h> | |
10 #include <ngx_http.h> | |
11 | |
12 | |
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13 static ngx_http_upstream_rr_peer_t *ngx_http_upstream_get_peer( |
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14 ngx_http_upstream_rr_peer_data_t *rrp); |
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15 |
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16 #if (NGX_HTTP_SSL) |
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17 |
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18 static ngx_int_t ngx_http_upstream_empty_set_session(ngx_peer_connection_t *pc, |
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19 void *data); |
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20 static void ngx_http_upstream_empty_save_session(ngx_peer_connection_t *pc, |
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21 void *data); |
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22 |
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23 #endif |
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24 |
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25 |
884 | 26 ngx_int_t |
27 ngx_http_upstream_init_round_robin(ngx_conf_t *cf, | |
28 ngx_http_upstream_srv_conf_t *us) | |
29 { | |
30 ngx_url_t u; | |
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31 ngx_uint_t i, j, n, w; |
884 | 32 ngx_http_upstream_server_t *server; |
1378 | 33 ngx_http_upstream_rr_peers_t *peers, *backup; |
884 | 34 |
35 us->peer.init = ngx_http_upstream_init_round_robin_peer; | |
36 | |
37 if (us->servers) { | |
38 server = us->servers->elts; | |
39 | |
1378 | 40 n = 0; |
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41 w = 0; |
1378 | 42 |
884 | 43 for (i = 0; i < us->servers->nelts; i++) { |
1378 | 44 if (server[i].backup) { |
45 continue; | |
46 } | |
47 | |
884 | 48 n += server[i].naddrs; |
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49 w += server[i].naddrs * server[i].weight; |
884 | 50 } |
51 | |
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52 if (n == 0) { |
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53 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
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54 "no servers in upstream \"%V\" in %s:%ui", |
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55 &us->host, us->file_name, us->line); |
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56 return NGX_ERROR; |
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57 } |
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58 |
884 | 59 peers = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t) |
60 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1)); | |
61 if (peers == NULL) { | |
62 return NGX_ERROR; | |
63 } | |
64 | |
1378 | 65 peers->single = (n == 1); |
884 | 66 peers->number = n; |
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67 peers->weighted = (w != n); |
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68 peers->total_weight = w; |
884 | 69 peers->name = &us->host; |
70 | |
71 n = 0; | |
72 | |
73 for (i = 0; i < us->servers->nelts; i++) { | |
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74 if (server[i].backup) { |
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75 continue; |
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76 } |
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77 |
884 | 78 for (j = 0; j < server[i].naddrs; j++) { |
79 peers->peer[n].sockaddr = server[i].addrs[j].sockaddr; | |
80 peers->peer[n].socklen = server[i].addrs[j].socklen; | |
81 peers->peer[n].name = server[i].addrs[j].name; | |
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82 peers->peer[n].weight = server[i].weight; |
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83 peers->peer[n].effective_weight = server[i].weight; |
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84 peers->peer[n].current_weight = 0; |
884 | 85 peers->peer[n].max_fails = server[i].max_fails; |
86 peers->peer[n].fail_timeout = server[i].fail_timeout; | |
87 peers->peer[n].down = server[i].down; | |
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88 peers->peer[n].server = server[i].name; |
884 | 89 n++; |
90 } | |
91 } | |
92 | |
93 us->peer.data = peers; | |
94 | |
1378 | 95 /* backup servers */ |
96 | |
97 n = 0; | |
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98 w = 0; |
1378 | 99 |
100 for (i = 0; i < us->servers->nelts; i++) { | |
101 if (!server[i].backup) { | |
102 continue; | |
103 } | |
104 | |
105 n += server[i].naddrs; | |
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106 w += server[i].naddrs * server[i].weight; |
1378 | 107 } |
108 | |
109 if (n == 0) { | |
110 return NGX_OK; | |
111 } | |
112 | |
113 backup = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t) | |
114 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1)); | |
115 if (backup == NULL) { | |
116 return NGX_ERROR; | |
117 } | |
118 | |
119 peers->single = 0; | |
120 backup->single = 0; | |
121 backup->number = n; | |
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122 backup->weighted = (w != n); |
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123 backup->total_weight = w; |
1378 | 124 backup->name = &us->host; |
125 | |
126 n = 0; | |
127 | |
128 for (i = 0; i < us->servers->nelts; i++) { | |
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129 if (!server[i].backup) { |
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130 continue; |
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131 } |
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132 |
1378 | 133 for (j = 0; j < server[i].naddrs; j++) { |
134 backup->peer[n].sockaddr = server[i].addrs[j].sockaddr; | |
135 backup->peer[n].socklen = server[i].addrs[j].socklen; | |
136 backup->peer[n].name = server[i].addrs[j].name; | |
137 backup->peer[n].weight = server[i].weight; | |
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138 backup->peer[n].effective_weight = server[i].weight; |
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139 backup->peer[n].current_weight = 0; |
1378 | 140 backup->peer[n].max_fails = server[i].max_fails; |
141 backup->peer[n].fail_timeout = server[i].fail_timeout; | |
142 backup->peer[n].down = server[i].down; | |
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143 backup->peer[n].server = server[i].name; |
1378 | 144 n++; |
145 } | |
146 } | |
147 | |
148 peers->next = backup; | |
149 | |
884 | 150 return NGX_OK; |
151 } | |
152 | |
153 | |
154 /* an upstream implicitly defined by proxy_pass, etc. */ | |
155 | |
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156 if (us->port == 0) { |
906 | 157 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
158 "no port in upstream \"%V\" in %s:%ui", | |
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159 &us->host, us->file_name, us->line); |
906 | 160 return NGX_ERROR; |
161 } | |
162 | |
884 | 163 ngx_memzero(&u, sizeof(ngx_url_t)); |
164 | |
165 u.host = us->host; | |
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166 u.port = us->port; |
884 | 167 |
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168 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) { |
884 | 169 if (u.err) { |
170 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
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171 "%s in upstream \"%V\" in %s:%ui", |
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172 u.err, &us->host, us->file_name, us->line); |
884 | 173 } |
174 | |
175 return NGX_ERROR; | |
176 } | |
177 | |
178 n = u.naddrs; | |
179 | |
180 peers = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t) | |
181 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1)); | |
182 if (peers == NULL) { | |
183 return NGX_ERROR; | |
184 } | |
185 | |
1378 | 186 peers->single = (n == 1); |
884 | 187 peers->number = n; |
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188 peers->weighted = 0; |
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189 peers->total_weight = n; |
884 | 190 peers->name = &us->host; |
191 | |
192 for (i = 0; i < u.naddrs; i++) { | |
1564 | 193 peers->peer[i].sockaddr = u.addrs[i].sockaddr; |
194 peers->peer[i].socklen = u.addrs[i].socklen; | |
195 peers->peer[i].name = u.addrs[i].name; | |
196 peers->peer[i].weight = 1; | |
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197 peers->peer[i].effective_weight = 1; |
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198 peers->peer[i].current_weight = 0; |
1564 | 199 peers->peer[i].max_fails = 1; |
200 peers->peer[i].fail_timeout = 10; | |
884 | 201 } |
202 | |
203 us->peer.data = peers; | |
204 | |
1378 | 205 /* implicitly defined upstream has no backup servers */ |
206 | |
884 | 207 return NGX_OK; |
208 } | |
209 | |
210 | |
211 ngx_int_t | |
212 ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r, | |
213 ngx_http_upstream_srv_conf_t *us) | |
214 { | |
215 ngx_uint_t n; | |
216 ngx_http_upstream_rr_peer_data_t *rrp; | |
217 | |
218 rrp = r->upstream->peer.data; | |
219 | |
220 if (rrp == NULL) { | |
221 rrp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_rr_peer_data_t)); | |
222 if (rrp == NULL) { | |
223 return NGX_ERROR; | |
224 } | |
225 | |
226 r->upstream->peer.data = rrp; | |
227 } | |
228 | |
229 rrp->peers = us->peer.data; | |
230 rrp->current = 0; | |
231 | |
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232 n = rrp->peers->number; |
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233 |
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234 if (rrp->peers->next && rrp->peers->next->number > n) { |
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235 n = rrp->peers->next->number; |
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236 } |
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237 |
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238 if (n <= 8 * sizeof(uintptr_t)) { |
884 | 239 rrp->tried = &rrp->data; |
240 rrp->data = 0; | |
241 | |
242 } else { | |
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243 n = (n + (8 * sizeof(uintptr_t) - 1)) / (8 * sizeof(uintptr_t)); |
884 | 244 |
245 rrp->tried = ngx_pcalloc(r->pool, n * sizeof(uintptr_t)); | |
246 if (rrp->tried == NULL) { | |
247 return NGX_ERROR; | |
248 } | |
249 } | |
250 | |
251 r->upstream->peer.get = ngx_http_upstream_get_round_robin_peer; | |
252 r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer; | |
253 r->upstream->peer.tries = rrp->peers->number; | |
254 #if (NGX_HTTP_SSL) | |
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255 r->upstream->peer.set_session = |
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256 ngx_http_upstream_set_round_robin_peer_session; |
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257 r->upstream->peer.save_session = |
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258 ngx_http_upstream_save_round_robin_peer_session; |
884 | 259 #endif |
260 | |
261 return NGX_OK; | |
262 } | |
263 | |
264 | |
265 ngx_int_t | |
1658 | 266 ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r, |
267 ngx_http_upstream_resolved_t *ur) | |
268 { | |
269 u_char *p; | |
270 size_t len; | |
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271 socklen_t socklen; |
1658 | 272 ngx_uint_t i, n; |
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273 struct sockaddr *sockaddr; |
1658 | 274 ngx_http_upstream_rr_peers_t *peers; |
275 ngx_http_upstream_rr_peer_data_t *rrp; | |
276 | |
277 rrp = r->upstream->peer.data; | |
278 | |
279 if (rrp == NULL) { | |
280 rrp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_rr_peer_data_t)); | |
281 if (rrp == NULL) { | |
282 return NGX_ERROR; | |
283 } | |
284 | |
285 r->upstream->peer.data = rrp; | |
286 } | |
287 | |
288 peers = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_rr_peers_t) | |
289 + sizeof(ngx_http_upstream_rr_peer_t) * (ur->naddrs - 1)); | |
290 if (peers == NULL) { | |
291 return NGX_ERROR; | |
292 } | |
293 | |
294 peers->single = (ur->naddrs == 1); | |
295 peers->number = ur->naddrs; | |
296 peers->name = &ur->host; | |
297 | |
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298 if (ur->sockaddr) { |
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299 peers->peer[0].sockaddr = ur->sockaddr; |
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300 peers->peer[0].socklen = ur->socklen; |
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301 peers->peer[0].name = ur->host; |
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302 peers->peer[0].weight = 1; |
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303 peers->peer[0].effective_weight = 1; |
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304 peers->peer[0].current_weight = 0; |
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305 peers->peer[0].max_fails = 1; |
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306 peers->peer[0].fail_timeout = 10; |
1658 | 307 |
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308 } else { |
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309 |
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310 for (i = 0; i < ur->naddrs; i++) { |
1658 | 311 |
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Changed resolver API to use ngx_addr_t.
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312 socklen = ur->addrs[i].socklen; |
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313 |
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314 sockaddr = ngx_palloc(r->pool, socklen); |
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315 if (sockaddr == NULL) { |
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316 return NGX_ERROR; |
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317 } |
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318 |
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319 ngx_memcpy(sockaddr, ur->addrs[i].sockaddr, socklen); |
2422
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320 |
5475
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321 switch (sockaddr->sa_family) { |
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322 #if (NGX_HAVE_INET6) |
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323 case AF_INET6: |
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324 ((struct sockaddr_in6 *) sockaddr)->sin6_port = htons(ur->port); |
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325 break; |
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326 #endif |
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327 default: /* AF_INET */ |
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328 ((struct sockaddr_in *) sockaddr)->sin_port = htons(ur->port); |
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329 } |
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330 |
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331 p = ngx_pnalloc(r->pool, NGX_SOCKADDR_STRLEN); |
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332 if (p == NULL) { |
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333 return NGX_ERROR; |
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334 } |
1658 | 335 |
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336 len = ngx_sock_ntop(sockaddr, socklen, p, NGX_SOCKADDR_STRLEN, 1); |
1658 | 337 |
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338 peers->peer[i].sockaddr = sockaddr; |
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339 peers->peer[i].socklen = socklen; |
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340 peers->peer[i].name.len = len; |
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341 peers->peer[i].name.data = p; |
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342 peers->peer[i].weight = 1; |
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343 peers->peer[i].effective_weight = 1; |
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344 peers->peer[i].current_weight = 0; |
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345 peers->peer[i].max_fails = 1; |
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346 peers->peer[i].fail_timeout = 10; |
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347 } |
1658 | 348 } |
349 | |
350 rrp->peers = peers; | |
351 rrp->current = 0; | |
352 | |
353 if (rrp->peers->number <= 8 * sizeof(uintptr_t)) { | |
354 rrp->tried = &rrp->data; | |
355 rrp->data = 0; | |
356 | |
357 } else { | |
358 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) | |
359 / (8 * sizeof(uintptr_t)); | |
360 | |
361 rrp->tried = ngx_pcalloc(r->pool, n * sizeof(uintptr_t)); | |
362 if (rrp->tried == NULL) { | |
363 return NGX_ERROR; | |
364 } | |
365 } | |
366 | |
367 r->upstream->peer.get = ngx_http_upstream_get_round_robin_peer; | |
368 r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer; | |
369 r->upstream->peer.tries = rrp->peers->number; | |
370 #if (NGX_HTTP_SSL) | |
3964
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371 r->upstream->peer.set_session = ngx_http_upstream_empty_set_session; |
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372 r->upstream->peer.save_session = ngx_http_upstream_empty_save_session; |
1658 | 373 #endif |
374 | |
375 return NGX_OK; | |
376 } | |
377 | |
378 | |
379 ngx_int_t | |
884 | 380 ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data) |
381 { | |
382 ngx_http_upstream_rr_peer_data_t *rrp = data; | |
383 | |
1378 | 384 ngx_int_t rc; |
385 ngx_uint_t i, n; | |
386 ngx_http_upstream_rr_peer_t *peer; | |
387 ngx_http_upstream_rr_peers_t *peers; | |
884 | 388 |
389 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
390 "get rr peer, try: %ui", pc->tries); | |
391 | |
392 /* ngx_lock_mutex(rrp->peers->mutex); */ | |
393 | |
394 pc->cached = 0; | |
395 pc->connection = NULL; | |
396 | |
1378 | 397 if (rrp->peers->single) { |
884 | 398 peer = &rrp->peers->peer[0]; |
399 | |
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|
400 if (peer->down) { |
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|
401 goto failed; |
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|
402 } |
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diff
changeset
|
403 |
884 | 404 } else { |
405 | |
406 /* there are several peers */ | |
407 | |
4621
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diff
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|
408 peer = ngx_http_upstream_get_peer(rrp); |
884 | 409 |
4621
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|
410 if (peer == NULL) { |
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diff
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|
411 goto failed; |
884 | 412 } |
413 | |
4621
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Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
414 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
415 "get rr peer, current: %ui %i", |
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Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
416 rrp->current, peer->current_weight); |
884 | 417 } |
418 | |
419 pc->sockaddr = peer->sockaddr; | |
420 pc->socklen = peer->socklen; | |
421 pc->name = &peer->name; | |
422 | |
423 /* ngx_unlock_mutex(rrp->peers->mutex); */ | |
424 | |
1378 | 425 if (pc->tries == 1 && rrp->peers->next) { |
426 pc->tries += rrp->peers->next->number; | |
427 } | |
428 | |
884 | 429 return NGX_OK; |
430 | |
431 failed: | |
432 | |
1378 | 433 peers = rrp->peers; |
434 | |
435 if (peers->next) { | |
436 | |
437 /* ngx_unlock_mutex(peers->mutex); */ | |
438 | |
439 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, "backup servers"); | |
440 | |
441 rrp->peers = peers->next; | |
442 pc->tries = rrp->peers->number; | |
443 | |
4991
a384c60d55f3
Upstream: fixed state resetting when switching to backup servers.
Valentin Bartenev <vbart@nginx.com>
parents:
4914
diff
changeset
|
444 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) |
a384c60d55f3
Upstream: fixed state resetting when switching to backup servers.
Valentin Bartenev <vbart@nginx.com>
parents:
4914
diff
changeset
|
445 / (8 * sizeof(uintptr_t)); |
a384c60d55f3
Upstream: fixed state resetting when switching to backup servers.
Valentin Bartenev <vbart@nginx.com>
parents:
4914
diff
changeset
|
446 |
1389 | 447 for (i = 0; i < n; i++) { |
1378 | 448 rrp->tried[i] = 0; |
449 } | |
450 | |
451 rc = ngx_http_upstream_get_round_robin_peer(pc, rrp); | |
452 | |
453 if (rc != NGX_BUSY) { | |
454 return rc; | |
455 } | |
456 | |
457 /* ngx_lock_mutex(peers->mutex); */ | |
458 } | |
459 | |
884 | 460 /* all peers failed, mark them as live for quick recovery */ |
461 | |
1378 | 462 for (i = 0; i < peers->number; i++) { |
463 peers->peer[i].fails = 0; | |
884 | 464 } |
465 | |
1378 | 466 /* ngx_unlock_mutex(peers->mutex); */ |
884 | 467 |
1378 | 468 pc->name = peers->name; |
884 | 469 |
470 return NGX_BUSY; | |
471 } | |
472 | |
473 | |
4621
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
474 static ngx_http_upstream_rr_peer_t * |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
475 ngx_http_upstream_get_peer(ngx_http_upstream_rr_peer_data_t *rrp) |
1344
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fair upstream weight balancer
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diff
changeset
|
476 { |
4621
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Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
477 time_t now; |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
478 uintptr_t m; |
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Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
479 ngx_int_t total; |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
480 ngx_uint_t i, n; |
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Upstream: smooth weighted round-robin balancing.
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diff
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|
481 ngx_http_upstream_rr_peer_t *peer, *best; |
1344
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fair upstream weight balancer
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diff
changeset
|
482 |
4621
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Upstream: smooth weighted round-robin balancing.
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diff
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|
483 now = ngx_time(); |
1344
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fair upstream weight balancer
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diff
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|
484 |
4621
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diff
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|
485 best = NULL; |
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|
486 total = 0; |
1344
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fair upstream weight balancer
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diff
changeset
|
487 |
4621
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diff
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|
488 for (i = 0; i < rrp->peers->number; i++) { |
1344
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diff
changeset
|
489 |
4621
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diff
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|
490 n = i / (8 * sizeof(uintptr_t)); |
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Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
491 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); |
1344
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diff
changeset
|
492 |
4621
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Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
493 if (rrp->tried[n] & m) { |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
494 continue; |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
495 } |
1344
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fair upstream weight balancer
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diff
changeset
|
496 |
4621
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Upstream: smooth weighted round-robin balancing.
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diff
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|
497 peer = &rrp->peers->peer[i]; |
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diff
changeset
|
498 |
4621
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4569
diff
changeset
|
499 if (peer->down) { |
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Upstream: smooth weighted round-robin balancing.
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diff
changeset
|
500 continue; |
1344
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fair upstream weight balancer
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diff
changeset
|
501 } |
8f5b5641966c
fair upstream weight balancer
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parents:
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diff
changeset
|
502 |
4621
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Upstream: smooth weighted round-robin balancing.
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parents:
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diff
changeset
|
503 if (peer->max_fails |
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504 && peer->fails >= peer->max_fails |
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Upstream: smooth weighted round-robin balancing.
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505 && now - peer->checked <= peer->fail_timeout) |
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506 { |
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Upstream: smooth weighted round-robin balancing.
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|
507 continue; |
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Upstream: smooth weighted round-robin balancing.
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|
508 } |
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Upstream: smooth weighted round-robin balancing.
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|
509 |
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510 peer->current_weight += peer->effective_weight; |
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511 total += peer->effective_weight; |
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Upstream: smooth weighted round-robin balancing.
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512 |
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Upstream: smooth weighted round-robin balancing.
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513 if (peer->effective_weight < peer->weight) { |
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514 peer->effective_weight++; |
4010
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Fixing cpu hog with all upstream servers marked "down".
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515 } |
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Fixing cpu hog with all upstream servers marked "down".
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516 |
4621
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517 if (best == NULL || peer->current_weight > best->current_weight) { |
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518 best = peer; |
1344
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519 } |
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520 } |
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521 |
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522 if (best == NULL) { |
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523 return NULL; |
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524 } |
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525 |
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526 i = best - &rrp->peers->peer[0]; |
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527 |
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Upstream: smooth weighted round-robin balancing.
Maxim Dounin <mdounin@mdounin.ru>
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528 rrp->current = i; |
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|
529 |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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530 n = i / (8 * sizeof(uintptr_t)); |
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531 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); |
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532 |
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533 rrp->tried[n] |= m; |
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|
534 |
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|
535 best->current_weight -= total; |
5220
1d68b502088c
Upstream: fixed fail_timeout and max_fails > 1.
Maxim Dounin <mdounin@mdounin.ru>
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|
536 |
1d68b502088c
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|
537 if (now - best->checked > best->fail_timeout) { |
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538 best->checked = now; |
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|
539 } |
4621
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|
540 |
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Upstream: smooth weighted round-robin balancing.
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|
541 return best; |
1344
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Igor Sysoev <igor@sysoev.ru>
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|
542 } |
8f5b5641966c
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Igor Sysoev <igor@sysoev.ru>
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diff
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|
543 |
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diff
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|
544 |
884 | 545 void |
546 ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data, | |
547 ngx_uint_t state) | |
548 { | |
549 ngx_http_upstream_rr_peer_data_t *rrp = data; | |
550 | |
551 time_t now; | |
552 ngx_http_upstream_rr_peer_t *peer; | |
553 | |
554 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
555 "free rr peer %ui %ui", pc->tries, state); | |
556 | |
557 /* TODO: NGX_PEER_KEEPALIVE */ | |
558 | |
1378 | 559 if (rrp->peers->single) { |
884 | 560 pc->tries = 0; |
561 return; | |
562 } | |
563 | |
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Better recheck of dead upstream servers.
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|
564 peer = &rrp->peers->peer[rrp->current]; |
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|
565 |
884 | 566 if (state & NGX_PEER_FAILED) { |
567 now = ngx_time(); | |
568 | |
569 /* ngx_lock_mutex(rrp->peers->mutex); */ | |
570 | |
571 peer->fails++; | |
572 peer->accessed = now; | |
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573 peer->checked = now; |
884 | 574 |
2204
70a2bcc7e307
fix divide by zero if max_fails=0
Igor Sysoev <igor@sysoev.ru>
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|
575 if (peer->max_fails) { |
4621
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|
576 peer->effective_weight -= peer->weight / peer->max_fails; |
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577 } |
1344
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578 |
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579 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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580 "free rr peer failed: %ui %i", |
4621
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Upstream: smooth weighted round-robin balancing.
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|
581 rrp->current, peer->effective_weight); |
1344
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parents:
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diff
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|
582 |
4621
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|
583 if (peer->effective_weight < 0) { |
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Upstream: smooth weighted round-robin balancing.
Maxim Dounin <mdounin@mdounin.ru>
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|
584 peer->effective_weight = 0; |
884 | 585 } |
586 | |
587 /* ngx_unlock_mutex(rrp->peers->mutex); */ | |
4207
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|
588 |
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Better recheck of dead upstream servers.
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|
589 } else { |
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Better recheck of dead upstream servers.
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|
590 |
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Better recheck of dead upstream servers.
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|
591 /* mark peer live if check passed */ |
4fc91bae6f83
Better recheck of dead upstream servers.
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|
592 |
4fc91bae6f83
Better recheck of dead upstream servers.
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changeset
|
593 if (peer->accessed < peer->checked) { |
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Better recheck of dead upstream servers.
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|
594 peer->fails = 0; |
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Better recheck of dead upstream servers.
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|
595 } |
884 | 596 } |
597 | |
598 if (pc->tries) { | |
599 pc->tries--; | |
600 } | |
601 | |
602 /* ngx_unlock_mutex(rrp->peers->mutex); */ | |
603 } | |
604 | |
605 | |
606 #if (NGX_HTTP_SSL) | |
607 | |
1284
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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|
608 ngx_int_t |
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|
609 ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc, |
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fix segfault when session was freed twice
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|
610 void *data) |
884 | 611 { |
612 ngx_http_upstream_rr_peer_data_t *rrp = data; | |
613 | |
1284
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|
614 ngx_int_t rc; |
884 | 615 ngx_ssl_session_t *ssl_session; |
616 ngx_http_upstream_rr_peer_t *peer; | |
617 | |
1284
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|
618 peer = &rrp->peers->peer[rrp->current]; |
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fix segfault when session was freed twice
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diff
changeset
|
619 |
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
620 /* TODO: threads only mutex */ |
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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changeset
|
621 /* ngx_lock_mutex(rrp->peers->mutex); */ |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
622 |
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fix segfault when session was freed twice
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parents:
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diff
changeset
|
623 ssl_session = peer->ssl_session; |
be2b895d31e0
fix segfault when session was freed twice
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diff
changeset
|
624 |
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fix segfault when session was freed twice
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diff
changeset
|
625 rc = ngx_ssl_set_session(pc->connection, ssl_session); |
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fix segfault when session was freed twice
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diff
changeset
|
626 |
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
627 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
1443 | 628 "set session: %p:%d", |
629 ssl_session, ssl_session ? ssl_session->references : 0); | |
1284
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
630 |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
631 /* ngx_unlock_mutex(rrp->peers->mutex); */ |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
632 |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
633 return rc; |
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
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|
634 } |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
635 |
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
636 |
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fix segfault when session was freed twice
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changeset
|
637 void |
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|
638 ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc, |
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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changeset
|
639 void *data) |
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fix segfault when session was freed twice
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|
640 { |
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changeset
|
641 ngx_http_upstream_rr_peer_data_t *rrp = data; |
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|
642 |
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changeset
|
643 ngx_ssl_session_t *old_ssl_session, *ssl_session; |
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|
644 ngx_http_upstream_rr_peer_t *peer; |
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diff
changeset
|
645 |
884 | 646 ssl_session = ngx_ssl_get_session(pc->connection); |
647 | |
648 if (ssl_session == NULL) { | |
649 return; | |
650 } | |
651 | |
1284
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changeset
|
652 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
1443 | 653 "save session: %p:%d", ssl_session, ssl_session->references); |
1284
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diff
changeset
|
654 |
884 | 655 peer = &rrp->peers->peer[rrp->current]; |
656 | |
1284
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fix segfault when session was freed twice
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diff
changeset
|
657 /* TODO: threads only mutex */ |
884 | 658 /* ngx_lock_mutex(rrp->peers->mutex); */ |
1284
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
659 |
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
660 old_ssl_session = peer->ssl_session; |
884 | 661 peer->ssl_session = ssl_session; |
1284
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diff
changeset
|
662 |
884 | 663 /* ngx_unlock_mutex(rrp->peers->mutex); */ |
664 | |
1284
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fix segfault when session was freed twice
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diff
changeset
|
665 if (old_ssl_session) { |
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fix segfault when session was freed twice
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diff
changeset
|
666 |
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
667 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
1443 | 668 "old session: %p:%d", |
1284
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diff
changeset
|
669 old_ssl_session, old_ssl_session->references); |
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fix segfault when session was freed twice
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diff
changeset
|
670 |
884 | 671 /* TODO: may block */ |
1284
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diff
changeset
|
672 |
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diff
changeset
|
673 ngx_ssl_free_session(old_ssl_session); |
884 | 674 } |
675 } | |
676 | |
3964
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
diff
changeset
|
677 |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
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678 static ngx_int_t |
ff127ba3b091
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Igor Sysoev <igor@sysoev.ru>
parents:
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679 ngx_http_upstream_empty_set_session(ngx_peer_connection_t *pc, void *data) |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
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680 { |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
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681 return NGX_OK; |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
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changeset
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682 } |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
diff
changeset
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683 |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
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changeset
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684 |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
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changeset
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685 static void |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
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686 ngx_http_upstream_empty_save_session(ngx_peer_connection_t *pc, void *data) |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
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687 { |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
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688 return; |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
2422
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changeset
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689 } |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
Igor Sysoev <igor@sysoev.ru>
parents:
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690 |
884 | 691 #endif |