Mercurial > hg > nginx-quic
annotate src/stream/ngx_stream_upstream_hash_module.c @ 6776:1bf4f21b1b72
Core: show file contents only once while dumping configuration.
Files are considered the same if the path used by nginx during parsing matches.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Tue, 18 Oct 2016 16:33:38 +0300 |
parents | 29bf0dbc0a77 |
children | 6c52b24fcf8e |
rev | line source |
---|---|
6115 | 1 |
2 /* | |
3 * Copyright (C) Roman Arutyunyan | |
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 typedef struct { | |
14 uint32_t hash; | |
15 ngx_str_t *server; | |
16 } ngx_stream_upstream_chash_point_t; | |
17 | |
18 | |
19 typedef struct { | |
20 ngx_uint_t number; | |
21 ngx_stream_upstream_chash_point_t point[1]; | |
22 } ngx_stream_upstream_chash_points_t; | |
23 | |
24 | |
25 typedef struct { | |
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26 ngx_stream_complex_value_t key; |
6115 | 27 ngx_stream_upstream_chash_points_t *points; |
28 } ngx_stream_upstream_hash_srv_conf_t; | |
29 | |
30 | |
31 typedef struct { | |
32 /* the round robin data must be first */ | |
33 ngx_stream_upstream_rr_peer_data_t rrp; | |
34 ngx_stream_upstream_hash_srv_conf_t *conf; | |
35 ngx_str_t key; | |
36 ngx_uint_t tries; | |
37 ngx_uint_t rehash; | |
38 uint32_t hash; | |
39 ngx_event_get_peer_pt get_rr_peer; | |
40 } ngx_stream_upstream_hash_peer_data_t; | |
41 | |
42 | |
43 static ngx_int_t ngx_stream_upstream_init_hash(ngx_conf_t *cf, | |
44 ngx_stream_upstream_srv_conf_t *us); | |
45 static ngx_int_t ngx_stream_upstream_init_hash_peer(ngx_stream_session_t *s, | |
46 ngx_stream_upstream_srv_conf_t *us); | |
47 static ngx_int_t ngx_stream_upstream_get_hash_peer(ngx_peer_connection_t *pc, | |
48 void *data); | |
49 | |
50 static ngx_int_t ngx_stream_upstream_init_chash(ngx_conf_t *cf, | |
51 ngx_stream_upstream_srv_conf_t *us); | |
52 static int ngx_libc_cdecl | |
53 ngx_stream_upstream_chash_cmp_points(const void *one, const void *two); | |
54 static ngx_uint_t ngx_stream_upstream_find_chash_point( | |
55 ngx_stream_upstream_chash_points_t *points, uint32_t hash); | |
56 static ngx_int_t ngx_stream_upstream_init_chash_peer(ngx_stream_session_t *s, | |
57 ngx_stream_upstream_srv_conf_t *us); | |
58 static ngx_int_t ngx_stream_upstream_get_chash_peer(ngx_peer_connection_t *pc, | |
59 void *data); | |
60 | |
61 static void *ngx_stream_upstream_hash_create_conf(ngx_conf_t *cf); | |
62 static char *ngx_stream_upstream_hash(ngx_conf_t *cf, ngx_command_t *cmd, | |
63 void *conf); | |
64 | |
65 | |
66 static ngx_command_t ngx_stream_upstream_hash_commands[] = { | |
67 | |
68 { ngx_string("hash"), | |
69 NGX_STREAM_UPS_CONF|NGX_CONF_TAKE12, | |
70 ngx_stream_upstream_hash, | |
71 NGX_STREAM_SRV_CONF_OFFSET, | |
72 0, | |
73 NULL }, | |
74 | |
75 ngx_null_command | |
76 }; | |
77 | |
78 | |
79 static ngx_stream_module_t ngx_stream_upstream_hash_module_ctx = { | |
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Stream: added preconfiguration step.
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80 NULL, /* preconfiguration */ |
6174
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81 NULL, /* postconfiguration */ |
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82 |
6115 | 83 NULL, /* create main configuration */ |
84 NULL, /* init main configuration */ | |
85 | |
86 ngx_stream_upstream_hash_create_conf, /* create server configuration */ | |
6629 | 87 NULL /* merge server configuration */ |
6115 | 88 }; |
89 | |
90 | |
91 ngx_module_t ngx_stream_upstream_hash_module = { | |
92 NGX_MODULE_V1, | |
93 &ngx_stream_upstream_hash_module_ctx, /* module context */ | |
94 ngx_stream_upstream_hash_commands, /* module directives */ | |
95 NGX_STREAM_MODULE, /* module type */ | |
96 NULL, /* init master */ | |
97 NULL, /* init module */ | |
98 NULL, /* init process */ | |
99 NULL, /* init thread */ | |
100 NULL, /* exit thread */ | |
101 NULL, /* exit process */ | |
102 NULL, /* exit master */ | |
103 NGX_MODULE_V1_PADDING | |
104 }; | |
105 | |
106 | |
107 static ngx_int_t | |
108 ngx_stream_upstream_init_hash(ngx_conf_t *cf, | |
109 ngx_stream_upstream_srv_conf_t *us) | |
110 { | |
111 if (ngx_stream_upstream_init_round_robin(cf, us) != NGX_OK) { | |
112 return NGX_ERROR; | |
113 } | |
114 | |
115 us->peer.init = ngx_stream_upstream_init_hash_peer; | |
116 | |
117 return NGX_OK; | |
118 } | |
119 | |
120 | |
121 static ngx_int_t | |
122 ngx_stream_upstream_init_hash_peer(ngx_stream_session_t *s, | |
123 ngx_stream_upstream_srv_conf_t *us) | |
124 { | |
125 ngx_stream_upstream_hash_srv_conf_t *hcf; | |
126 ngx_stream_upstream_hash_peer_data_t *hp; | |
127 | |
128 hp = ngx_palloc(s->connection->pool, | |
129 sizeof(ngx_stream_upstream_hash_peer_data_t)); | |
130 if (hp == NULL) { | |
131 return NGX_ERROR; | |
132 } | |
133 | |
134 s->upstream->peer.data = &hp->rrp; | |
135 | |
136 if (ngx_stream_upstream_init_round_robin_peer(s, us) != NGX_OK) { | |
137 return NGX_ERROR; | |
138 } | |
139 | |
140 s->upstream->peer.get = ngx_stream_upstream_get_hash_peer; | |
141 | |
142 hcf = ngx_stream_conf_upstream_srv_conf(us, | |
143 ngx_stream_upstream_hash_module); | |
144 | |
6610
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Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
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145 if (ngx_stream_complex_value(s, &hcf->key, &hp->key) != NGX_OK) { |
d5b5866c06c4
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parents:
6606
diff
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146 return NGX_ERROR; |
d5b5866c06c4
Stream: got rid of pseudo variables.
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parents:
6606
diff
changeset
|
147 } |
6115 | 148 |
149 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, | |
150 "upstream hash key:\"%V\"", &hp->key); | |
151 | |
152 hp->conf = hcf; | |
153 hp->tries = 0; | |
154 hp->rehash = 0; | |
155 hp->hash = 0; | |
156 hp->get_rr_peer = ngx_stream_upstream_get_round_robin_peer; | |
157 | |
158 return NGX_OK; | |
159 } | |
160 | |
161 | |
162 static ngx_int_t | |
163 ngx_stream_upstream_get_hash_peer(ngx_peer_connection_t *pc, void *data) | |
164 { | |
165 ngx_stream_upstream_hash_peer_data_t *hp = data; | |
166 | |
167 time_t now; | |
168 u_char buf[NGX_INT_T_LEN]; | |
169 size_t size; | |
170 uint32_t hash; | |
171 ngx_int_t w; | |
172 uintptr_t m; | |
6121
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Upstream: simplified ip_hash and hash peer selection code.
Ruslan Ermilov <ru@nginx.com>
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6115
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173 ngx_uint_t n, p; |
6115 | 174 ngx_stream_upstream_rr_peer_t *peer; |
175 | |
176 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
177 "get hash peer, try: %ui", pc->tries); | |
178 | |
179 ngx_stream_upstream_rr_peers_wlock(hp->rrp.peers); | |
180 | |
181 if (hp->tries > 20 || hp->rrp.peers->single) { | |
182 ngx_stream_upstream_rr_peers_unlock(hp->rrp.peers); | |
183 return hp->get_rr_peer(pc, &hp->rrp); | |
184 } | |
185 | |
186 now = ngx_time(); | |
187 | |
188 pc->connection = NULL; | |
189 | |
190 for ( ;; ) { | |
191 | |
192 /* | |
193 * Hash expression is compatible with Cache::Memcached: | |
194 * ((crc32([REHASH] KEY) >> 16) & 0x7fff) + PREV_HASH | |
195 * with REHASH omitted at the first iteration. | |
196 */ | |
197 | |
198 ngx_crc32_init(hash); | |
199 | |
200 if (hp->rehash > 0) { | |
201 size = ngx_sprintf(buf, "%ui", hp->rehash) - buf; | |
202 ngx_crc32_update(&hash, buf, size); | |
203 } | |
204 | |
205 ngx_crc32_update(&hash, hp->key.data, hp->key.len); | |
206 ngx_crc32_final(hash); | |
207 | |
208 hash = (hash >> 16) & 0x7fff; | |
209 | |
210 hp->hash += hash; | |
211 hp->rehash++; | |
212 | |
6121
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Upstream: simplified ip_hash and hash peer selection code.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
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213 w = hp->hash % hp->rrp.peers->total_weight; |
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Upstream: simplified ip_hash and hash peer selection code.
Ruslan Ermilov <ru@nginx.com>
parents:
6115
diff
changeset
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214 peer = hp->rrp.peers->peer; |
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parents:
6115
diff
changeset
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215 p = 0; |
6115 | 216 |
6121
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Upstream: simplified ip_hash and hash peer selection code.
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parents:
6115
diff
changeset
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217 while (w >= peer->weight) { |
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Upstream: simplified ip_hash and hash peer selection code.
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parents:
6115
diff
changeset
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218 w -= peer->weight; |
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parents:
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219 peer = peer->next; |
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220 p++; |
6115 | 221 } |
222 | |
223 n = p / (8 * sizeof(uintptr_t)); | |
224 m = (uintptr_t) 1 << p % (8 * sizeof(uintptr_t)); | |
225 | |
226 if (hp->rrp.tried[n] & m) { | |
227 goto next; | |
228 } | |
229 | |
230 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
231 "get hash peer, value:%uD, peer:%ui", hp->hash, p); | |
232 | |
233 if (peer->down) { | |
234 goto next; | |
235 } | |
236 | |
237 if (peer->max_fails | |
238 && peer->fails >= peer->max_fails | |
239 && now - peer->checked <= peer->fail_timeout) | |
240 { | |
241 goto next; | |
242 } | |
243 | |
6705 | 244 if (peer->max_conns && peer->conns >= peer->max_conns) { |
245 goto next; | |
246 } | |
247 | |
6115 | 248 break; |
249 | |
250 next: | |
251 | |
252 if (++hp->tries > 20) { | |
253 ngx_stream_upstream_rr_peers_unlock(hp->rrp.peers); | |
254 return hp->get_rr_peer(pc, &hp->rrp); | |
255 } | |
256 } | |
257 | |
258 hp->rrp.current = peer; | |
259 | |
260 pc->sockaddr = peer->sockaddr; | |
261 pc->socklen = peer->socklen; | |
262 pc->name = &peer->name; | |
263 | |
264 peer->conns++; | |
265 | |
266 if (now - peer->checked > peer->fail_timeout) { | |
267 peer->checked = now; | |
268 } | |
269 | |
270 ngx_stream_upstream_rr_peers_unlock(hp->rrp.peers); | |
271 | |
272 hp->rrp.tried[n] |= m; | |
273 | |
274 return NGX_OK; | |
275 } | |
276 | |
277 | |
278 static ngx_int_t | |
279 ngx_stream_upstream_init_chash(ngx_conf_t *cf, | |
280 ngx_stream_upstream_srv_conf_t *us) | |
281 { | |
282 u_char *host, *port, c; | |
283 size_t host_len, port_len, size; | |
6148
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Upstream hash: consistency across little/big endianness.
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parents:
6121
diff
changeset
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284 uint32_t hash, base_hash; |
6115 | 285 ngx_str_t *server; |
286 ngx_uint_t npoints, i, j; | |
287 ngx_stream_upstream_rr_peer_t *peer; | |
288 ngx_stream_upstream_rr_peers_t *peers; | |
289 ngx_stream_upstream_chash_points_t *points; | |
290 ngx_stream_upstream_hash_srv_conf_t *hcf; | |
6148
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Upstream hash: consistency across little/big endianness.
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parents:
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291 union { |
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parents:
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292 uint32_t value; |
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293 u_char byte[4]; |
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294 } prev_hash; |
6115 | 295 |
296 if (ngx_stream_upstream_init_round_robin(cf, us) != NGX_OK) { | |
297 return NGX_ERROR; | |
298 } | |
299 | |
300 us->peer.init = ngx_stream_upstream_init_chash_peer; | |
301 | |
302 peers = us->peer.data; | |
303 npoints = peers->total_weight * 160; | |
304 | |
305 size = sizeof(ngx_stream_upstream_chash_points_t) | |
306 + sizeof(ngx_stream_upstream_chash_point_t) * (npoints - 1); | |
307 | |
308 points = ngx_palloc(cf->pool, size); | |
309 if (points == NULL) { | |
310 return NGX_ERROR; | |
311 } | |
312 | |
313 points->number = 0; | |
314 | |
315 for (peer = peers->peer; peer; peer = peer->next) { | |
316 server = &peer->server; | |
317 | |
318 /* | |
319 * Hash expression is compatible with Cache::Memcached::Fast: | |
320 * crc32(HOST \0 PORT PREV_HASH). | |
321 */ | |
322 | |
323 if (server->len >= 5 | |
324 && ngx_strncasecmp(server->data, (u_char *) "unix:", 5) == 0) | |
325 { | |
326 host = server->data + 5; | |
327 host_len = server->len - 5; | |
328 port = NULL; | |
329 port_len = 0; | |
330 goto done; | |
331 } | |
332 | |
333 for (j = 0; j < server->len; j++) { | |
334 c = server->data[server->len - j - 1]; | |
335 | |
336 if (c == ':') { | |
337 host = server->data; | |
338 host_len = server->len - j - 1; | |
339 port = server->data + server->len - j; | |
340 port_len = j; | |
341 goto done; | |
342 } | |
343 | |
344 if (c < '0' || c > '9') { | |
345 break; | |
346 } | |
347 } | |
348 | |
349 host = server->data; | |
350 host_len = server->len; | |
351 port = NULL; | |
352 port_len = 0; | |
353 | |
354 done: | |
355 | |
356 ngx_crc32_init(base_hash); | |
357 ngx_crc32_update(&base_hash, host, host_len); | |
358 ngx_crc32_update(&base_hash, (u_char *) "", 1); | |
359 ngx_crc32_update(&base_hash, port, port_len); | |
360 | |
6148
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Upstream hash: consistency across little/big endianness.
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parents:
6121
diff
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361 prev_hash.value = 0; |
6115 | 362 npoints = peer->weight * 160; |
363 | |
364 for (j = 0; j < npoints; j++) { | |
365 hash = base_hash; | |
366 | |
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Upstream hash: consistency across little/big endianness.
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parents:
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367 ngx_crc32_update(&hash, prev_hash.byte, 4); |
6115 | 368 ngx_crc32_final(hash); |
369 | |
370 points->point[points->number].hash = hash; | |
371 points->point[points->number].server = server; | |
372 points->number++; | |
373 | |
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374 #if (NGX_HAVE_LITTLE_ENDIAN) |
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375 prev_hash.value = hash; |
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376 #else |
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377 prev_hash.byte[0] = (u_char) (hash & 0xff); |
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Upstream hash: consistency across little/big endianness.
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parents:
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378 prev_hash.byte[1] = (u_char) ((hash >> 8) & 0xff); |
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379 prev_hash.byte[2] = (u_char) ((hash >> 16) & 0xff); |
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parents:
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380 prev_hash.byte[3] = (u_char) ((hash >> 24) & 0xff); |
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parents:
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381 #endif |
6115 | 382 } |
383 } | |
384 | |
385 ngx_qsort(points->point, | |
386 points->number, | |
387 sizeof(ngx_stream_upstream_chash_point_t), | |
388 ngx_stream_upstream_chash_cmp_points); | |
389 | |
390 for (i = 0, j = 1; j < points->number; j++) { | |
391 if (points->point[i].hash != points->point[j].hash) { | |
392 points->point[++i] = points->point[j]; | |
393 } | |
394 } | |
395 | |
396 points->number = i + 1; | |
397 | |
398 hcf = ngx_stream_conf_upstream_srv_conf(us, | |
399 ngx_stream_upstream_hash_module); | |
400 hcf->points = points; | |
401 | |
402 return NGX_OK; | |
403 } | |
404 | |
405 | |
406 static int ngx_libc_cdecl | |
407 ngx_stream_upstream_chash_cmp_points(const void *one, const void *two) | |
408 { | |
409 ngx_stream_upstream_chash_point_t *first = | |
410 (ngx_stream_upstream_chash_point_t *) one; | |
411 ngx_stream_upstream_chash_point_t *second = | |
412 (ngx_stream_upstream_chash_point_t *) two; | |
413 | |
414 if (first->hash < second->hash) { | |
415 return -1; | |
416 | |
417 } else if (first->hash > second->hash) { | |
418 return 1; | |
419 | |
420 } else { | |
421 return 0; | |
422 } | |
423 } | |
424 | |
425 | |
426 static ngx_uint_t | |
427 ngx_stream_upstream_find_chash_point(ngx_stream_upstream_chash_points_t *points, | |
428 uint32_t hash) | |
429 { | |
430 ngx_uint_t i, j, k; | |
431 ngx_stream_upstream_chash_point_t *point; | |
432 | |
433 /* find first point >= hash */ | |
434 | |
435 point = &points->point[0]; | |
436 | |
437 i = 0; | |
438 j = points->number; | |
439 | |
440 while (i < j) { | |
441 k = (i + j) / 2; | |
442 | |
443 if (hash > point[k].hash) { | |
444 i = k + 1; | |
445 | |
446 } else if (hash < point[k].hash) { | |
447 j = k; | |
448 | |
449 } else { | |
450 return k; | |
451 } | |
452 } | |
453 | |
454 return i; | |
455 } | |
456 | |
457 | |
458 static ngx_int_t | |
459 ngx_stream_upstream_init_chash_peer(ngx_stream_session_t *s, | |
460 ngx_stream_upstream_srv_conf_t *us) | |
461 { | |
462 uint32_t hash; | |
463 ngx_stream_upstream_hash_srv_conf_t *hcf; | |
464 ngx_stream_upstream_hash_peer_data_t *hp; | |
465 | |
466 if (ngx_stream_upstream_init_hash_peer(s, us) != NGX_OK) { | |
467 return NGX_ERROR; | |
468 } | |
469 | |
470 s->upstream->peer.get = ngx_stream_upstream_get_chash_peer; | |
471 | |
472 hp = s->upstream->peer.data; | |
473 hcf = ngx_stream_conf_upstream_srv_conf(us, | |
474 ngx_stream_upstream_hash_module); | |
475 | |
476 hash = ngx_crc32_long(hp->key.data, hp->key.len); | |
477 | |
478 ngx_stream_upstream_rr_peers_rlock(hp->rrp.peers); | |
479 | |
480 hp->hash = ngx_stream_upstream_find_chash_point(hcf->points, hash); | |
481 | |
482 ngx_stream_upstream_rr_peers_unlock(hp->rrp.peers); | |
483 | |
484 return NGX_OK; | |
485 } | |
486 | |
487 | |
488 static ngx_int_t | |
489 ngx_stream_upstream_get_chash_peer(ngx_peer_connection_t *pc, void *data) | |
490 { | |
491 ngx_stream_upstream_hash_peer_data_t *hp = data; | |
492 | |
493 time_t now; | |
494 intptr_t m; | |
495 ngx_str_t *server; | |
496 ngx_int_t total; | |
497 ngx_uint_t i, n, best_i; | |
498 ngx_stream_upstream_rr_peer_t *peer, *best; | |
499 ngx_stream_upstream_chash_point_t *point; | |
500 ngx_stream_upstream_chash_points_t *points; | |
501 ngx_stream_upstream_hash_srv_conf_t *hcf; | |
502 | |
503 ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
504 "get consistent hash peer, try: %ui", pc->tries); | |
505 | |
506 ngx_stream_upstream_rr_peers_wlock(hp->rrp.peers); | |
507 | |
508 pc->connection = NULL; | |
509 | |
510 now = ngx_time(); | |
511 hcf = hp->conf; | |
512 | |
513 points = hcf->points; | |
514 point = &points->point[0]; | |
515 | |
516 for ( ;; ) { | |
517 server = point[hp->hash % points->number].server; | |
518 | |
519 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0, | |
520 "consistent hash peer:%uD, server:\"%V\"", | |
521 hp->hash, server); | |
522 | |
523 best = NULL; | |
524 best_i = 0; | |
525 total = 0; | |
526 | |
527 for (peer = hp->rrp.peers->peer, i = 0; | |
528 peer; | |
529 peer = peer->next, i++) | |
530 { | |
531 n = i / (8 * sizeof(uintptr_t)); | |
532 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); | |
533 | |
534 if (hp->rrp.tried[n] & m) { | |
535 continue; | |
536 } | |
537 | |
538 if (peer->down) { | |
539 continue; | |
540 } | |
541 | |
542 if (peer->server.len != server->len | |
543 || ngx_strncmp(peer->server.data, server->data, server->len) | |
544 != 0) | |
545 { | |
546 continue; | |
547 } | |
548 | |
549 if (peer->max_fails | |
550 && peer->fails >= peer->max_fails | |
551 && now - peer->checked <= peer->fail_timeout) | |
552 { | |
553 continue; | |
554 } | |
555 | |
6705 | 556 if (peer->max_conns && peer->conns >= peer->max_conns) { |
557 continue; | |
558 } | |
559 | |
6115 | 560 peer->current_weight += peer->effective_weight; |
561 total += peer->effective_weight; | |
562 | |
563 if (peer->effective_weight < peer->weight) { | |
564 peer->effective_weight++; | |
565 } | |
566 | |
567 if (best == NULL || peer->current_weight > best->current_weight) { | |
568 best = peer; | |
569 best_i = i; | |
570 } | |
571 } | |
572 | |
573 if (best) { | |
574 best->current_weight -= total; | |
575 break; | |
576 } | |
577 | |
578 hp->hash++; | |
579 hp->tries++; | |
580 | |
581 if (hp->tries >= points->number) { | |
6697
52367732bcbc
Upstream hash: fixed missing upstream name initialization.
Vladimir Homutov <vl@nginx.com>
parents:
6629
diff
changeset
|
582 pc->name = hp->rrp.peers->name; |
6115 | 583 ngx_stream_upstream_rr_peers_unlock(hp->rrp.peers); |
584 return NGX_BUSY; | |
585 } | |
586 } | |
587 | |
588 hp->rrp.current = best; | |
589 | |
590 pc->sockaddr = best->sockaddr; | |
591 pc->socklen = best->socklen; | |
592 pc->name = &best->name; | |
593 | |
594 best->conns++; | |
595 | |
596 if (now - best->checked > best->fail_timeout) { | |
597 best->checked = now; | |
598 } | |
599 | |
600 ngx_stream_upstream_rr_peers_unlock(hp->rrp.peers); | |
601 | |
602 n = best_i / (8 * sizeof(uintptr_t)); | |
603 m = (uintptr_t) 1 << best_i % (8 * sizeof(uintptr_t)); | |
604 | |
605 hp->rrp.tried[n] |= m; | |
606 | |
607 return NGX_OK; | |
608 } | |
609 | |
610 | |
611 static void * | |
612 ngx_stream_upstream_hash_create_conf(ngx_conf_t *cf) | |
613 { | |
614 ngx_stream_upstream_hash_srv_conf_t *conf; | |
615 | |
616 conf = ngx_palloc(cf->pool, sizeof(ngx_stream_upstream_hash_srv_conf_t)); | |
617 if (conf == NULL) { | |
618 return NULL; | |
619 } | |
620 | |
621 conf->points = NULL; | |
622 | |
623 return conf; | |
624 } | |
625 | |
626 | |
627 static char * | |
628 ngx_stream_upstream_hash(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
629 { | |
6610
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
630 ngx_stream_upstream_hash_srv_conf_t *hcf = conf; |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
631 |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
632 ngx_str_t *value; |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
633 ngx_stream_upstream_srv_conf_t *uscf; |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
634 ngx_stream_compile_complex_value_t ccv; |
6115 | 635 |
636 value = cf->args->elts; | |
637 | |
6610
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Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
638 ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t)); |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
639 |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
640 ccv.cf = cf; |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
641 ccv.value = &value[1]; |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
642 ccv.complex_value = &hcf->key; |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
643 |
d5b5866c06c4
Stream: got rid of pseudo variables.
Vladimir Homutov <vl@nginx.com>
parents:
6606
diff
changeset
|
644 if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) { |
6115 | 645 return NGX_CONF_ERROR; |
646 } | |
647 | |
648 uscf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_upstream_module); | |
649 | |
650 if (uscf->peer.init_upstream) { | |
651 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, | |
652 "load balancing method redefined"); | |
653 } | |
654 | |
655 uscf->flags = NGX_STREAM_UPSTREAM_CREATE | |
656 |NGX_STREAM_UPSTREAM_WEIGHT | |
6705 | 657 |NGX_STREAM_UPSTREAM_MAX_CONNS |
6115 | 658 |NGX_STREAM_UPSTREAM_MAX_FAILS |
659 |NGX_STREAM_UPSTREAM_FAIL_TIMEOUT | |
660 |NGX_STREAM_UPSTREAM_DOWN; | |
661 | |
662 if (cf->args->nelts == 2) { | |
663 uscf->peer.init_upstream = ngx_stream_upstream_init_hash; | |
664 | |
665 } else if (ngx_strcmp(value[2].data, "consistent") == 0) { | |
666 uscf->peer.init_upstream = ngx_stream_upstream_init_chash; | |
667 | |
668 } else { | |
669 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
670 "invalid parameter \"%V\"", &value[2]); | |
671 return NGX_CONF_ERROR; | |
672 } | |
673 | |
674 return NGX_CONF_OK; | |
675 } |