Mercurial > hg > nginx-quic
annotate src/http/ngx_http_upstream_round_robin.c @ 5975:05bc5d5d1c5d
release-1.7.10 tag
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 10 Feb 2015 17:33:32 +0300 |
parents | 575175ebf4b4 |
children | 6ff0ebd6fbf4 |
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 #define ngx_http_upstream_tries(p) ((p)->number \ |
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14 + ((p)->next ? (p)->next->number : 0)) |
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15 |
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16 |
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17 static ngx_http_upstream_rr_peer_t *ngx_http_upstream_get_peer( |
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18 ngx_http_upstream_rr_peer_data_t *rrp); |
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19 |
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20 #if (NGX_HTTP_SSL) |
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21 |
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22 static ngx_int_t ngx_http_upstream_empty_set_session(ngx_peer_connection_t *pc, |
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23 void *data); |
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24 static void ngx_http_upstream_empty_save_session(ngx_peer_connection_t *pc, |
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25 void *data); |
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26 |
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27 #endif |
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28 |
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29 |
884 | 30 ngx_int_t |
31 ngx_http_upstream_init_round_robin(ngx_conf_t *cf, | |
32 ngx_http_upstream_srv_conf_t *us) | |
33 { | |
34 ngx_url_t u; | |
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35 ngx_uint_t i, j, n, w; |
884 | 36 ngx_http_upstream_server_t *server; |
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37 ngx_http_upstream_rr_peer_t *peer; |
1378 | 38 ngx_http_upstream_rr_peers_t *peers, *backup; |
884 | 39 |
40 us->peer.init = ngx_http_upstream_init_round_robin_peer; | |
41 | |
42 if (us->servers) { | |
43 server = us->servers->elts; | |
44 | |
1378 | 45 n = 0; |
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46 w = 0; |
1378 | 47 |
884 | 48 for (i = 0; i < us->servers->nelts; i++) { |
1378 | 49 if (server[i].backup) { |
50 continue; | |
51 } | |
52 | |
884 | 53 n += server[i].naddrs; |
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54 w += server[i].naddrs * server[i].weight; |
884 | 55 } |
56 | |
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57 if (n == 0) { |
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58 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
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59 "no servers in upstream \"%V\" in %s:%ui", |
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60 &us->host, us->file_name, us->line); |
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61 return NGX_ERROR; |
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62 } |
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63 |
884 | 64 peers = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t) |
65 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1)); | |
66 if (peers == NULL) { | |
67 return NGX_ERROR; | |
68 } | |
69 | |
1378 | 70 peers->single = (n == 1); |
884 | 71 peers->number = n; |
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72 peers->weighted = (w != n); |
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73 peers->total_weight = w; |
884 | 74 peers->name = &us->host; |
75 | |
76 n = 0; | |
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77 peer = peers->peer; |
884 | 78 |
79 for (i = 0; i < us->servers->nelts; i++) { | |
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80 if (server[i].backup) { |
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81 continue; |
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82 } |
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83 |
884 | 84 for (j = 0; j < server[i].naddrs; j++) { |
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85 peer[n].sockaddr = server[i].addrs[j].sockaddr; |
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86 peer[n].socklen = server[i].addrs[j].socklen; |
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87 peer[n].name = server[i].addrs[j].name; |
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88 peer[n].weight = server[i].weight; |
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89 peer[n].effective_weight = server[i].weight; |
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90 peer[n].current_weight = 0; |
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91 peer[n].max_fails = server[i].max_fails; |
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92 peer[n].fail_timeout = server[i].fail_timeout; |
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93 peer[n].down = server[i].down; |
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94 peer[n].server = server[i].name; |
884 | 95 n++; |
96 } | |
97 } | |
98 | |
99 us->peer.data = peers; | |
100 | |
1378 | 101 /* backup servers */ |
102 | |
103 n = 0; | |
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104 w = 0; |
1378 | 105 |
106 for (i = 0; i < us->servers->nelts; i++) { | |
107 if (!server[i].backup) { | |
108 continue; | |
109 } | |
110 | |
111 n += server[i].naddrs; | |
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112 w += server[i].naddrs * server[i].weight; |
1378 | 113 } |
114 | |
115 if (n == 0) { | |
116 return NGX_OK; | |
117 } | |
118 | |
119 backup = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t) | |
120 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1)); | |
121 if (backup == NULL) { | |
122 return NGX_ERROR; | |
123 } | |
124 | |
125 peers->single = 0; | |
126 backup->single = 0; | |
127 backup->number = n; | |
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128 backup->weighted = (w != n); |
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129 backup->total_weight = w; |
1378 | 130 backup->name = &us->host; |
131 | |
132 n = 0; | |
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133 peer = backup->peer; |
1378 | 134 |
135 for (i = 0; i < us->servers->nelts; i++) { | |
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136 if (!server[i].backup) { |
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137 continue; |
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138 } |
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139 |
1378 | 140 for (j = 0; j < server[i].naddrs; j++) { |
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141 peer[n].sockaddr = server[i].addrs[j].sockaddr; |
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142 peer[n].socklen = server[i].addrs[j].socklen; |
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143 peer[n].name = server[i].addrs[j].name; |
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144 peer[n].weight = server[i].weight; |
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145 peer[n].effective_weight = server[i].weight; |
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146 peer[n].current_weight = 0; |
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147 peer[n].max_fails = server[i].max_fails; |
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148 peer[n].fail_timeout = server[i].fail_timeout; |
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149 peer[n].down = server[i].down; |
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150 peer[n].server = server[i].name; |
1378 | 151 n++; |
152 } | |
153 } | |
154 | |
155 peers->next = backup; | |
156 | |
884 | 157 return NGX_OK; |
158 } | |
159 | |
160 | |
161 /* an upstream implicitly defined by proxy_pass, etc. */ | |
162 | |
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163 if (us->port == 0) { |
906 | 164 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
165 "no port in upstream \"%V\" in %s:%ui", | |
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166 &us->host, us->file_name, us->line); |
906 | 167 return NGX_ERROR; |
168 } | |
169 | |
884 | 170 ngx_memzero(&u, sizeof(ngx_url_t)); |
171 | |
172 u.host = us->host; | |
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173 u.port = us->port; |
884 | 174 |
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175 if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) { |
884 | 176 if (u.err) { |
177 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
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178 "%s in upstream \"%V\" in %s:%ui", |
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179 u.err, &us->host, us->file_name, us->line); |
884 | 180 } |
181 | |
182 return NGX_ERROR; | |
183 } | |
184 | |
185 n = u.naddrs; | |
186 | |
187 peers = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_rr_peers_t) | |
188 + sizeof(ngx_http_upstream_rr_peer_t) * (n - 1)); | |
189 if (peers == NULL) { | |
190 return NGX_ERROR; | |
191 } | |
192 | |
1378 | 193 peers->single = (n == 1); |
884 | 194 peers->number = n; |
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195 peers->weighted = 0; |
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196 peers->total_weight = n; |
884 | 197 peers->name = &us->host; |
198 | |
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199 peer = peers->peer; |
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200 |
884 | 201 for (i = 0; i < u.naddrs; i++) { |
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202 peer[i].sockaddr = u.addrs[i].sockaddr; |
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203 peer[i].socklen = u.addrs[i].socklen; |
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204 peer[i].name = u.addrs[i].name; |
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205 peer[i].weight = 1; |
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206 peer[i].effective_weight = 1; |
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207 peer[i].current_weight = 0; |
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208 peer[i].max_fails = 1; |
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209 peer[i].fail_timeout = 10; |
884 | 210 } |
211 | |
212 us->peer.data = peers; | |
213 | |
1378 | 214 /* implicitly defined upstream has no backup servers */ |
215 | |
884 | 216 return NGX_OK; |
217 } | |
218 | |
219 | |
220 ngx_int_t | |
221 ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r, | |
222 ngx_http_upstream_srv_conf_t *us) | |
223 { | |
224 ngx_uint_t n; | |
225 ngx_http_upstream_rr_peer_data_t *rrp; | |
226 | |
227 rrp = r->upstream->peer.data; | |
228 | |
229 if (rrp == NULL) { | |
230 rrp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_rr_peer_data_t)); | |
231 if (rrp == NULL) { | |
232 return NGX_ERROR; | |
233 } | |
234 | |
235 r->upstream->peer.data = rrp; | |
236 } | |
237 | |
238 rrp->peers = us->peer.data; | |
239 rrp->current = 0; | |
240 | |
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241 n = rrp->peers->number; |
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242 |
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243 if (rrp->peers->next && rrp->peers->next->number > n) { |
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244 n = rrp->peers->next->number; |
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245 } |
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246 |
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247 if (n <= 8 * sizeof(uintptr_t)) { |
884 | 248 rrp->tried = &rrp->data; |
249 rrp->data = 0; | |
250 | |
251 } else { | |
4011
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252 n = (n + (8 * sizeof(uintptr_t) - 1)) / (8 * sizeof(uintptr_t)); |
884 | 253 |
254 rrp->tried = ngx_pcalloc(r->pool, n * sizeof(uintptr_t)); | |
255 if (rrp->tried == NULL) { | |
256 return NGX_ERROR; | |
257 } | |
258 } | |
259 | |
260 r->upstream->peer.get = ngx_http_upstream_get_round_robin_peer; | |
261 r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer; | |
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262 r->upstream->peer.tries = ngx_http_upstream_tries(rrp->peers); |
884 | 263 #if (NGX_HTTP_SSL) |
1284
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fix segfault when session was freed twice
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264 r->upstream->peer.set_session = |
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265 ngx_http_upstream_set_round_robin_peer_session; |
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266 r->upstream->peer.save_session = |
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267 ngx_http_upstream_save_round_robin_peer_session; |
884 | 268 #endif |
269 | |
270 return NGX_OK; | |
271 } | |
272 | |
273 | |
274 ngx_int_t | |
1658 | 275 ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r, |
276 ngx_http_upstream_resolved_t *ur) | |
277 { | |
278 u_char *p; | |
279 size_t len; | |
5475
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Changed resolver API to use ngx_addr_t.
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280 socklen_t socklen; |
1658 | 281 ngx_uint_t i, n; |
5475
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282 struct sockaddr *sockaddr; |
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283 ngx_http_upstream_rr_peer_t *peer; |
1658 | 284 ngx_http_upstream_rr_peers_t *peers; |
285 ngx_http_upstream_rr_peer_data_t *rrp; | |
286 | |
287 rrp = r->upstream->peer.data; | |
288 | |
289 if (rrp == NULL) { | |
290 rrp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_rr_peer_data_t)); | |
291 if (rrp == NULL) { | |
292 return NGX_ERROR; | |
293 } | |
294 | |
295 r->upstream->peer.data = rrp; | |
296 } | |
297 | |
298 peers = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_rr_peers_t) | |
299 + sizeof(ngx_http_upstream_rr_peer_t) * (ur->naddrs - 1)); | |
300 if (peers == NULL) { | |
301 return NGX_ERROR; | |
302 } | |
303 | |
304 peers->single = (ur->naddrs == 1); | |
305 peers->number = ur->naddrs; | |
306 peers->name = &ur->host; | |
307 | |
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308 peer = peers->peer; |
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309 |
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310 if (ur->sockaddr) { |
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311 peer[0].sockaddr = ur->sockaddr; |
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312 peer[0].socklen = ur->socklen; |
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313 peer[0].name = ur->host; |
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314 peer[0].weight = 1; |
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315 peer[0].effective_weight = 1; |
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316 peer[0].current_weight = 0; |
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317 peer[0].max_fails = 1; |
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318 peer[0].fail_timeout = 10; |
1658 | 319 |
2422
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320 } else { |
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|
321 |
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variable support for unix sockets in fastcgi_pass and proxy_pass
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322 for (i = 0; i < ur->naddrs; i++) { |
1658 | 323 |
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|
324 socklen = ur->addrs[i].socklen; |
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325 |
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326 sockaddr = ngx_palloc(r->pool, socklen); |
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327 if (sockaddr == NULL) { |
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328 return NGX_ERROR; |
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|
329 } |
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330 |
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331 ngx_memcpy(sockaddr, ur->addrs[i].sockaddr, socklen); |
2422
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332 |
5475
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333 switch (sockaddr->sa_family) { |
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334 #if (NGX_HAVE_INET6) |
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335 case AF_INET6: |
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336 ((struct sockaddr_in6 *) sockaddr)->sin6_port = htons(ur->port); |
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337 break; |
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338 #endif |
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339 default: /* AF_INET */ |
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340 ((struct sockaddr_in *) sockaddr)->sin_port = htons(ur->port); |
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|
341 } |
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|
342 |
07dd5bd222ac
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|
343 p = ngx_pnalloc(r->pool, NGX_SOCKADDR_STRLEN); |
2422
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344 if (p == NULL) { |
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|
345 return NGX_ERROR; |
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diff
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|
346 } |
1658 | 347 |
5475
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diff
changeset
|
348 len = ngx_sock_ntop(sockaddr, socklen, p, NGX_SOCKADDR_STRLEN, 1); |
1658 | 349 |
5720
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diff
changeset
|
350 peer[i].sockaddr = sockaddr; |
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351 peer[i].socklen = socklen; |
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|
352 peer[i].name.len = len; |
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353 peer[i].name.data = p; |
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|
354 peer[i].weight = 1; |
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diff
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|
355 peer[i].effective_weight = 1; |
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356 peer[i].current_weight = 0; |
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357 peer[i].max_fails = 1; |
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358 peer[i].fail_timeout = 10; |
2422
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2204
diff
changeset
|
359 } |
1658 | 360 } |
361 | |
362 rrp->peers = peers; | |
363 rrp->current = 0; | |
364 | |
365 if (rrp->peers->number <= 8 * sizeof(uintptr_t)) { | |
366 rrp->tried = &rrp->data; | |
367 rrp->data = 0; | |
368 | |
369 } else { | |
370 n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1)) | |
371 / (8 * sizeof(uintptr_t)); | |
372 | |
373 rrp->tried = ngx_pcalloc(r->pool, n * sizeof(uintptr_t)); | |
374 if (rrp->tried == NULL) { | |
375 return NGX_ERROR; | |
376 } | |
377 } | |
378 | |
379 r->upstream->peer.get = ngx_http_upstream_get_round_robin_peer; | |
380 r->upstream->peer.free = ngx_http_upstream_free_round_robin_peer; | |
5831
575175ebf4b4
Upstream: included backup peers into peer.tries.
Roman Arutyunyan <arut@nginx.com>
parents:
5756
diff
changeset
|
381 r->upstream->peer.tries = ngx_http_upstream_tries(rrp->peers); |
1658 | 382 #if (NGX_HTTP_SSL) |
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
|
383 r->upstream->peer.set_session = ngx_http_upstream_empty_set_session; |
ff127ba3b091
do not try to reuse and save a SSL session for a peer created on the fly
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parents:
2422
diff
changeset
|
384 r->upstream->peer.save_session = ngx_http_upstream_empty_save_session; |
1658 | 385 #endif |
386 | |
387 return NGX_OK; | |
388 } | |
389 | |
390 | |
391 ngx_int_t | |
884 | 392 ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data) |
393 { | |
394 ngx_http_upstream_rr_peer_data_t *rrp = data; | |
395 | |
1378 | 396 ngx_int_t rc; |
397 ngx_uint_t i, n; | |
398 ngx_http_upstream_rr_peer_t *peer; | |
399 ngx_http_upstream_rr_peers_t *peers; | |
884 | 400 |
401 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
402 "get rr peer, try: %ui", pc->tries); | |
403 | |
404 pc->cached = 0; | |
405 pc->connection = NULL; | |
406 | |
5720
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diff
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|
407 peers = rrp->peers; |
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changeset
|
408 |
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|
409 /* ngx_lock_mutex(peers->mutex); */ |
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diff
changeset
|
410 |
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diff
changeset
|
411 if (peers->single) { |
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diff
changeset
|
412 peer = &peers->peer[0]; |
884 | 413 |
4914
dcb853acae97
Upstream: honor the "down" flag for a single server.
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diff
changeset
|
414 if (peer->down) { |
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Upstream: honor the "down" flag for a single server.
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diff
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|
415 goto failed; |
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Upstream: honor the "down" flag for a single server.
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diff
changeset
|
416 } |
dcb853acae97
Upstream: honor the "down" flag for a single server.
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diff
changeset
|
417 |
884 | 418 } else { |
419 | |
420 /* there are several peers */ | |
421 | |
4621
c90801720a0c
Upstream: smooth weighted round-robin balancing.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4569
diff
changeset
|
422 peer = ngx_http_upstream_get_peer(rrp); |
884 | 423 |
4621
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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4569
diff
changeset
|
424 if (peer == NULL) { |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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4569
diff
changeset
|
425 goto failed; |
884 | 426 } |
427 | |
4621
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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4569
diff
changeset
|
428 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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Upstream: smooth weighted round-robin balancing.
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4569
diff
changeset
|
429 "get rr peer, current: %ui %i", |
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Upstream: smooth weighted round-robin balancing.
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parents:
4569
diff
changeset
|
430 rrp->current, peer->current_weight); |
884 | 431 } |
432 | |
433 pc->sockaddr = peer->sockaddr; | |
434 pc->socklen = peer->socklen; | |
435 pc->name = &peer->name; | |
436 | |
5720
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parents:
5717
diff
changeset
|
437 /* ngx_unlock_mutex(peers->mutex); */ |
884 | 438 |
439 return NGX_OK; | |
440 | |
441 failed: | |
442 | |
1378 | 443 if (peers->next) { |
444 | |
445 /* ngx_unlock_mutex(peers->mutex); */ | |
446 | |
447 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, "backup servers"); | |
448 | |
449 rrp->peers = peers->next; | |
450 | |
4991
a384c60d55f3
Upstream: fixed state resetting when switching to backup servers.
Valentin Bartenev <vbart@nginx.com>
parents:
4914
diff
changeset
|
451 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
|
452 / (8 * sizeof(uintptr_t)); |
a384c60d55f3
Upstream: fixed state resetting when switching to backup servers.
Valentin Bartenev <vbart@nginx.com>
parents:
4914
diff
changeset
|
453 |
1389 | 454 for (i = 0; i < n; i++) { |
1378 | 455 rrp->tried[i] = 0; |
456 } | |
457 | |
458 rc = ngx_http_upstream_get_round_robin_peer(pc, rrp); | |
459 | |
460 if (rc != NGX_BUSY) { | |
461 return rc; | |
462 } | |
463 | |
464 /* ngx_lock_mutex(peers->mutex); */ | |
465 } | |
466 | |
884 | 467 /* all peers failed, mark them as live for quick recovery */ |
468 | |
1378 | 469 for (i = 0; i < peers->number; i++) { |
470 peers->peer[i].fails = 0; | |
884 | 471 } |
472 | |
1378 | 473 /* ngx_unlock_mutex(peers->mutex); */ |
884 | 474 |
1378 | 475 pc->name = peers->name; |
884 | 476 |
477 return NGX_BUSY; | |
478 } | |
479 | |
480 | |
4621
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Upstream: smooth weighted round-robin balancing.
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481 static ngx_http_upstream_rr_peer_t * |
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482 ngx_http_upstream_get_peer(ngx_http_upstream_rr_peer_data_t *rrp) |
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483 { |
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484 time_t now; |
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Upstream: smooth weighted round-robin balancing.
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485 uintptr_t m; |
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Upstream: smooth weighted round-robin balancing.
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486 ngx_int_t total; |
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Upstream: smooth weighted round-robin balancing.
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487 ngx_uint_t i, n; |
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488 ngx_http_upstream_rr_peer_t *peer, *best; |
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489 |
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490 now = ngx_time(); |
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491 |
4621
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492 best = NULL; |
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Upstream: smooth weighted round-robin balancing.
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493 total = 0; |
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494 |
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495 for (i = 0; i < rrp->peers->number; i++) { |
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496 |
4621
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497 n = i / (8 * sizeof(uintptr_t)); |
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Upstream: smooth weighted round-robin balancing.
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498 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); |
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499 |
4621
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Upstream: smooth weighted round-robin balancing.
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500 if (rrp->tried[n] & m) { |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
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501 continue; |
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Upstream: smooth weighted round-robin balancing.
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|
502 } |
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503 |
4621
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Upstream: smooth weighted round-robin balancing.
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504 peer = &rrp->peers->peer[i]; |
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505 |
4621
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506 if (peer->down) { |
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Upstream: smooth weighted round-robin balancing.
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|
507 continue; |
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508 } |
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fair upstream weight balancer
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509 |
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Upstream: smooth weighted round-robin balancing.
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510 if (peer->max_fails |
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Upstream: smooth weighted round-robin balancing.
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511 && peer->fails >= peer->max_fails |
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Upstream: smooth weighted round-robin balancing.
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512 && now - peer->checked <= peer->fail_timeout) |
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Upstream: smooth weighted round-robin balancing.
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513 { |
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Upstream: smooth weighted round-robin balancing.
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|
514 continue; |
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Upstream: smooth weighted round-robin balancing.
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|
515 } |
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Upstream: smooth weighted round-robin balancing.
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516 |
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517 peer->current_weight += peer->effective_weight; |
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Upstream: smooth weighted round-robin balancing.
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518 total += peer->effective_weight; |
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Upstream: smooth weighted round-robin balancing.
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519 |
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Upstream: smooth weighted round-robin balancing.
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520 if (peer->effective_weight < peer->weight) { |
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521 peer->effective_weight++; |
4010
74a93d3fdd85
Fixing cpu hog with all upstream servers marked "down".
Maxim Dounin <mdounin@mdounin.ru>
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522 } |
74a93d3fdd85
Fixing cpu hog with all upstream servers marked "down".
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523 |
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524 if (best == NULL || peer->current_weight > best->current_weight) { |
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525 best = peer; |
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526 } |
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527 } |
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|
528 |
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529 if (best == NULL) { |
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530 return NULL; |
c90801720a0c
Upstream: smooth weighted round-robin balancing.
Maxim Dounin <mdounin@mdounin.ru>
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|
531 } |
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Upstream: smooth weighted round-robin balancing.
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|
532 |
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|
533 i = best - &rrp->peers->peer[0]; |
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Upstream: smooth weighted round-robin balancing.
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|
534 |
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|
535 rrp->current = i; |
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|
536 |
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Upstream: smooth weighted round-robin balancing.
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|
537 n = i / (8 * sizeof(uintptr_t)); |
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Upstream: smooth weighted round-robin balancing.
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538 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); |
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|
539 |
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Upstream: smooth weighted round-robin balancing.
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|
540 rrp->tried[n] |= m; |
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Upstream: smooth weighted round-robin balancing.
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|
541 |
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Upstream: smooth weighted round-robin balancing.
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|
542 best->current_weight -= total; |
5220
1d68b502088c
Upstream: fixed fail_timeout and max_fails > 1.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
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|
543 |
1d68b502088c
Upstream: fixed fail_timeout and max_fails > 1.
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|
544 if (now - best->checked > best->fail_timeout) { |
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changeset
|
545 best->checked = now; |
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Upstream: fixed fail_timeout and max_fails > 1.
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|
546 } |
4621
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|
547 |
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Upstream: smooth weighted round-robin balancing.
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|
548 return best; |
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|
549 } |
8f5b5641966c
fair upstream weight balancer
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|
550 |
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|
551 |
884 | 552 void |
553 ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data, | |
554 ngx_uint_t state) | |
555 { | |
556 ngx_http_upstream_rr_peer_data_t *rrp = data; | |
557 | |
558 time_t now; | |
559 ngx_http_upstream_rr_peer_t *peer; | |
560 | |
561 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, | |
562 "free rr peer %ui %ui", pc->tries, state); | |
563 | |
564 /* TODO: NGX_PEER_KEEPALIVE */ | |
565 | |
1378 | 566 if (rrp->peers->single) { |
884 | 567 pc->tries = 0; |
568 return; | |
569 } | |
570 | |
4207
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Better recheck of dead upstream servers.
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|
571 peer = &rrp->peers->peer[rrp->current]; |
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572 |
884 | 573 if (state & NGX_PEER_FAILED) { |
574 now = ngx_time(); | |
575 | |
576 /* ngx_lock_mutex(rrp->peers->mutex); */ | |
577 | |
578 peer->fails++; | |
579 peer->accessed = now; | |
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Better recheck of dead upstream servers.
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|
580 peer->checked = now; |
884 | 581 |
2204
70a2bcc7e307
fix divide by zero if max_fails=0
Igor Sysoev <igor@sysoev.ru>
parents:
2197
diff
changeset
|
582 if (peer->max_fails) { |
4621
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|
583 peer->effective_weight -= peer->weight / peer->max_fails; |
2204
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fix divide by zero if max_fails=0
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|
584 } |
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|
585 |
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|
586 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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587 "free rr peer failed: %ui %i", |
4621
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Upstream: smooth weighted round-robin balancing.
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|
588 rrp->current, peer->effective_weight); |
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|
589 |
4621
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Upstream: smooth weighted round-robin balancing.
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|
590 if (peer->effective_weight < 0) { |
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Upstream: smooth weighted round-robin balancing.
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changeset
|
591 peer->effective_weight = 0; |
884 | 592 } |
593 | |
594 /* ngx_unlock_mutex(rrp->peers->mutex); */ | |
4207
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Better recheck of dead upstream servers.
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|
595 |
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Better recheck of dead upstream servers.
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|
596 } else { |
4fc91bae6f83
Better recheck of dead upstream servers.
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changeset
|
597 |
4fc91bae6f83
Better recheck of dead upstream servers.
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diff
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|
598 /* mark peer live if check passed */ |
4fc91bae6f83
Better recheck of dead upstream servers.
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diff
changeset
|
599 |
4fc91bae6f83
Better recheck of dead upstream servers.
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parents:
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diff
changeset
|
600 if (peer->accessed < peer->checked) { |
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Better recheck of dead upstream servers.
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|
601 peer->fails = 0; |
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Better recheck of dead upstream servers.
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|
602 } |
884 | 603 } |
604 | |
605 if (pc->tries) { | |
606 pc->tries--; | |
607 } | |
608 | |
609 /* ngx_unlock_mutex(rrp->peers->mutex); */ | |
610 } | |
611 | |
612 | |
613 #if (NGX_HTTP_SSL) | |
614 | |
1284
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fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
615 ngx_int_t |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
616 ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc, |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
617 void *data) |
884 | 618 { |
619 ngx_http_upstream_rr_peer_data_t *rrp = data; | |
620 | |
1284
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fix segfault when session was freed twice
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diff
changeset
|
621 ngx_int_t rc; |
884 | 622 ngx_ssl_session_t *ssl_session; |
623 ngx_http_upstream_rr_peer_t *peer; | |
624 | |
1284
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fix segfault when session was freed twice
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diff
changeset
|
625 peer = &rrp->peers->peer[rrp->current]; |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
626 |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
627 /* TODO: threads only mutex */ |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
628 /* ngx_lock_mutex(rrp->peers->mutex); */ |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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1206
diff
changeset
|
629 |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
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diff
changeset
|
630 ssl_session = peer->ssl_session; |
be2b895d31e0
fix segfault when session was freed twice
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diff
changeset
|
631 |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
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diff
changeset
|
632 rc = ngx_ssl_set_session(pc->connection, ssl_session); |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
633 |
5756
5b7276408565
SSL: stop accessing SSL_SESSION's fields directly.
Piotr Sikora <piotr@cloudflare.com>
parents:
5720
diff
changeset
|
634 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
5b7276408565
SSL: stop accessing SSL_SESSION's fields directly.
Piotr Sikora <piotr@cloudflare.com>
parents:
5720
diff
changeset
|
635 "set session: %p", ssl_session); |
1284
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
636 |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
637 /* ngx_unlock_mutex(rrp->peers->mutex); */ |
be2b895d31e0
fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents:
1206
diff
changeset
|
638 |
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639 return rc; |
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640 } |
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641 |
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642 |
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643 void |
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644 ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc, |
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645 void *data) |
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646 { |
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647 ngx_http_upstream_rr_peer_data_t *rrp = data; |
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648 |
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649 ngx_ssl_session_t *old_ssl_session, *ssl_session; |
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650 ngx_http_upstream_rr_peer_t *peer; |
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651 |
884 | 652 ssl_session = ngx_ssl_get_session(pc->connection); |
653 | |
654 if (ssl_session == NULL) { | |
655 return; | |
656 } | |
657 | |
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658 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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659 "save session: %p", ssl_session); |
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660 |
884 | 661 peer = &rrp->peers->peer[rrp->current]; |
662 | |
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663 /* TODO: threads only mutex */ |
884 | 664 /* ngx_lock_mutex(rrp->peers->mutex); */ |
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665 |
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666 old_ssl_session = peer->ssl_session; |
884 | 667 peer->ssl_session = ssl_session; |
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668 |
884 | 669 /* ngx_unlock_mutex(rrp->peers->mutex); */ |
670 | |
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671 if (old_ssl_session) { |
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672 |
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673 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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674 "old session: %p", old_ssl_session); |
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675 |
884 | 676 /* TODO: may block */ |
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677 |
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678 ngx_ssl_free_session(old_ssl_session); |
884 | 679 } |
680 } | |
681 | |
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682 |
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683 static ngx_int_t |
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684 ngx_http_upstream_empty_set_session(ngx_peer_connection_t *pc, void *data) |
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685 { |
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686 return NGX_OK; |
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687 } |
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688 |
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689 |
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690 static void |
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691 ngx_http_upstream_empty_save_session(ngx_peer_connection_t *pc, void *data) |
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692 { |
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693 return; |
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694 } |
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695 |
884 | 696 #endif |