Mercurial > hg > nginx-vendor-1-0
comparison src/http/modules/ngx_http_memcached_module.c @ 130:82d695e3d662 NGINX_0_3_12
nginx 0.3.12
*) Security: if nginx was built with the ngx_http_realip_module and the
"satisfy_any on" directive was used, then access and authorization
directives did not work. The ngx_http_realip_module was not built
and is not built by default.
*) Change: the "$time_gmt" variable name was changed to "$time_local".
*) Change: the "proxy_header_buffer_size" and
"fastcgi_header_buffer_size" directives was renamed to the
"proxy_buffer_size" and "fastcgi_buffer_size" directives.
*) Feature: the ngx_http_memcached_module.
*) Feature: the "proxy_buffering" directive.
*) Bugfix: the changes in accept mutex handling when the "rtsig" method
was used; bug appeared in 0.3.0.
*) Bugfix: if the client sent the "Transfer-Encoding: chunked" header
line, then nginx returns the 411 error.
*) Bugfix: if the "auth_basic" directive was inherited from the http
level, then the realm in the "WWW-Authenticate" header line was
without the "Basic realm" text.
*) Bugfix: if the "combined" format was explicitly specified in the
"access_log" directive, then the empty lines was written to the log;
bug appeared in 0.3.8.
*) Bugfix: nginx did not run on the sparc platform under any OS except
Solaris.
*) Bugfix: now it is not necessary to place space between the quoted
string and closing bracket in the "if" directive.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Sat, 26 Nov 2005 00:00:00 +0300 |
parents | |
children | 36af50a5582d |
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1 | |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4 */ | |
5 | |
6 | |
7 #include <ngx_config.h> | |
8 #include <ngx_core.h> | |
9 #include <ngx_event.h> | |
10 #include <ngx_http.h> | |
11 | |
12 | |
13 typedef struct { | |
14 ngx_http_upstream_conf_t upstream; | |
15 ngx_peers_t *peers; | |
16 } ngx_http_memcached_loc_conf_t; | |
17 | |
18 | |
19 typedef struct { | |
20 size_t rest; | |
21 ngx_http_request_t *request; | |
22 } ngx_http_memcached_ctx_t; | |
23 | |
24 | |
25 static ngx_int_t ngx_http_memcached_create_request(ngx_http_request_t *r); | |
26 static ngx_int_t ngx_http_memcached_reinit_request(ngx_http_request_t *r); | |
27 static ngx_int_t ngx_http_memcached_process_header(ngx_http_request_t *r); | |
28 static ngx_int_t ngx_http_memcached_filter_init(void *data); | |
29 static ngx_int_t ngx_http_memcached_filter(void *data, ssize_t bytes); | |
30 static void ngx_http_memcached_abort_request(ngx_http_request_t *r); | |
31 static void ngx_http_memcached_finalize_request(ngx_http_request_t *r, | |
32 ngx_int_t rc); | |
33 | |
34 static void *ngx_http_memcached_create_loc_conf(ngx_conf_t *cf); | |
35 static char *ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, | |
36 void *parent, void *child); | |
37 | |
38 static char *ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
39 void *conf); | |
40 | |
41 | |
42 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = { | |
43 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
44 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
45 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
46 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
47 { ngx_null_string, 0 } | |
48 }; | |
49 | |
50 | |
51 static ngx_command_t ngx_http_memcached_commands[] = { | |
52 | |
53 { ngx_string("memcached_pass"), | |
54 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
55 ngx_http_memcached_pass, | |
56 NGX_HTTP_LOC_CONF_OFFSET, | |
57 0, | |
58 NULL }, | |
59 | |
60 { ngx_string("memcached_connect_timeout"), | |
61 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
62 ngx_conf_set_msec_slot, | |
63 NGX_HTTP_LOC_CONF_OFFSET, | |
64 offsetof(ngx_http_memcached_loc_conf_t, upstream.connect_timeout), | |
65 NULL }, | |
66 | |
67 { ngx_string("memcached_send_timeout"), | |
68 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
69 ngx_conf_set_msec_slot, | |
70 NGX_HTTP_LOC_CONF_OFFSET, | |
71 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout), | |
72 NULL }, | |
73 | |
74 { ngx_string("memcached_buffer_size"), | |
75 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
76 ngx_conf_set_size_slot, | |
77 NGX_HTTP_LOC_CONF_OFFSET, | |
78 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size), | |
79 NULL }, | |
80 | |
81 { ngx_string("memcached_read_timeout"), | |
82 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
83 ngx_conf_set_msec_slot, | |
84 NGX_HTTP_LOC_CONF_OFFSET, | |
85 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout), | |
86 NULL }, | |
87 | |
88 { ngx_string("memcached_next_upstream"), | |
89 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
90 ngx_conf_set_bitmask_slot, | |
91 NGX_HTTP_LOC_CONF_OFFSET, | |
92 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream), | |
93 &ngx_http_memcached_next_upstream_masks }, | |
94 | |
95 { ngx_string("memcached_upstream_max_fails"), | |
96 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
97 ngx_conf_set_num_slot, | |
98 NGX_HTTP_LOC_CONF_OFFSET, | |
99 offsetof(ngx_http_memcached_loc_conf_t, upstream.max_fails), | |
100 NULL }, | |
101 | |
102 { ngx_string("memcached_upstream_fail_timeout"), | |
103 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
104 ngx_conf_set_sec_slot, | |
105 NGX_HTTP_LOC_CONF_OFFSET, | |
106 offsetof(ngx_http_memcached_loc_conf_t, upstream.fail_timeout), | |
107 NULL }, | |
108 | |
109 ngx_null_command | |
110 }; | |
111 | |
112 | |
113 ngx_http_module_t ngx_http_memcached_module_ctx = { | |
114 NULL, /* preconfiguration */ | |
115 NULL, /* postconfiguration */ | |
116 | |
117 NULL, /* create main configuration */ | |
118 NULL, /* init main configuration */ | |
119 | |
120 NULL, /* create server configuration */ | |
121 NULL, /* merge server configuration */ | |
122 | |
123 ngx_http_memcached_create_loc_conf, /* create location configration */ | |
124 ngx_http_memcached_merge_loc_conf /* merge location configration */ | |
125 }; | |
126 | |
127 | |
128 ngx_module_t ngx_http_memcached_module = { | |
129 NGX_MODULE_V1, | |
130 &ngx_http_memcached_module_ctx, /* module context */ | |
131 ngx_http_memcached_commands, /* module directives */ | |
132 NGX_HTTP_MODULE, /* module type */ | |
133 NULL, /* init master */ | |
134 NULL, /* init module */ | |
135 NULL, /* init process */ | |
136 NULL, /* init thread */ | |
137 NULL, /* exit thread */ | |
138 NULL, /* exit process */ | |
139 NULL, /* exit master */ | |
140 NGX_MODULE_V1_PADDING | |
141 }; | |
142 | |
143 | |
144 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1) | |
145 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF; | |
146 | |
147 | |
148 static ngx_int_t | |
149 ngx_http_memcached_handler(ngx_http_request_t *r) | |
150 { | |
151 ngx_int_t rc; | |
152 ngx_http_upstream_t *u; | |
153 ngx_http_memcached_ctx_t *ctx; | |
154 ngx_http_memcached_loc_conf_t *mlcf; | |
155 | |
156 if (r->method != NGX_HTTP_GET && r->method != NGX_HTTP_HEAD) { | |
157 return NGX_HTTP_NOT_ALLOWED; | |
158 } | |
159 | |
160 rc = ngx_http_discard_body(r); | |
161 | |
162 if (rc != NGX_OK && rc != NGX_AGAIN) { | |
163 return rc; | |
164 } | |
165 | |
166 if (ngx_http_set_content_type(r) != NGX_OK) { | |
167 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
168 } | |
169 | |
170 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); | |
171 | |
172 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t)); | |
173 if (u == NULL) { | |
174 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
175 } | |
176 | |
177 u->peer.log = r->connection->log; | |
178 u->peer.log_error = NGX_ERROR_ERR; | |
179 u->peer.peers = mlcf->peers; | |
180 u->peer.tries = mlcf->peers->number; | |
181 #if (NGX_THREADS) | |
182 u->peer.lock = &r->connection->lock; | |
183 #endif | |
184 | |
185 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module; | |
186 | |
187 u->conf = &mlcf->upstream; | |
188 | |
189 u->create_request = ngx_http_memcached_create_request; | |
190 u->reinit_request = ngx_http_memcached_reinit_request; | |
191 u->process_header = ngx_http_memcached_process_header; | |
192 u->abort_request = ngx_http_memcached_abort_request; | |
193 u->finalize_request = ngx_http_memcached_finalize_request; | |
194 | |
195 r->upstream = u; | |
196 | |
197 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t)); | |
198 if (ctx == NULL) { | |
199 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
200 } | |
201 | |
202 ctx->rest = NGX_HTTP_MEMCACHED_END; | |
203 ctx->request = r; | |
204 | |
205 u->input_filter_init = ngx_http_memcached_filter_init; | |
206 u->input_filter = ngx_http_memcached_filter; | |
207 u->input_filter_ctx = ctx; | |
208 | |
209 ngx_http_upstream_init(r); | |
210 | |
211 return NGX_DONE; | |
212 } | |
213 | |
214 | |
215 static ngx_int_t | |
216 ngx_http_memcached_create_request(ngx_http_request_t *r) | |
217 { | |
218 size_t len; | |
219 ngx_buf_t *b; | |
220 ngx_chain_t *cl; | |
221 | |
222 len = sizeof("get ") - 1 + r->uri.len + sizeof(" " CRLF) - 1; | |
223 if (r->args.len) { | |
224 len += 1+ r->args.len; | |
225 } | |
226 | |
227 b = ngx_create_temp_buf(r->pool, len); | |
228 if (b == NULL) { | |
229 return NGX_ERROR; | |
230 } | |
231 | |
232 cl = ngx_alloc_chain_link(r->pool); | |
233 if (cl == NULL) { | |
234 return NGX_ERROR; | |
235 } | |
236 | |
237 cl->buf = b; | |
238 cl->next = NULL; | |
239 | |
240 r->upstream->request_bufs = cl; | |
241 | |
242 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' '; | |
243 | |
244 b->last = ngx_copy(b->last, r->uri.data, r->uri.len); | |
245 | |
246 if (r->args.len) { | |
247 *b->last++ = '?'; | |
248 b->last = ngx_copy(b->last, r->args.data, r->args.len); | |
249 } | |
250 | |
251 #if (NGX_DEBUG) | |
252 { | |
253 ngx_str_t s; | |
254 | |
255 s.len = b->last - b->pos; | |
256 s.data = b->pos; | |
257 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
258 "http memcached request: \"%V\"", &s); | |
259 } | |
260 #endif | |
261 | |
262 *b->last++ = ' '; *b->last++ = CR; *b->last++ = LF; | |
263 | |
264 return NGX_OK; | |
265 } | |
266 | |
267 | |
268 static ngx_int_t | |
269 ngx_http_memcached_reinit_request(ngx_http_request_t *r) | |
270 { | |
271 return NGX_OK; | |
272 } | |
273 | |
274 | |
275 static ngx_int_t | |
276 ngx_http_memcached_process_header(ngx_http_request_t *r) | |
277 { | |
278 u_char *p, *len; | |
279 ngx_str_t line; | |
280 ngx_http_upstream_t *u; | |
281 | |
282 u = r->upstream; | |
283 | |
284 for (p = u->buffer.pos; p < u->buffer.last; p++) { | |
285 if (*p == LF) { | |
286 goto found; | |
287 } | |
288 } | |
289 | |
290 return NGX_AGAIN; | |
291 | |
292 found: | |
293 | |
294 *p = '\0'; | |
295 | |
296 line.len = p - u->buffer.pos - 1; | |
297 line.data = u->buffer.pos; | |
298 | |
299 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
300 "memcached: \"%V\"", &line); | |
301 | |
302 p = u->buffer.pos; | |
303 | |
304 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) { | |
305 | |
306 p += sizeof("VALUE ") - 1; | |
307 | |
308 if (ngx_strncmp(p, r->uri.data, r->uri.len) != 0) { | |
309 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
310 "memcached sent invalid key in response \"%V\" " | |
311 "for key \"%V\"", | |
312 &line, &r->uri); | |
313 | |
314 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
315 } | |
316 | |
317 p += r->uri.len; | |
318 | |
319 if (*p++ != ' ') { | |
320 goto no_valid; | |
321 } | |
322 | |
323 /* skip flags */ | |
324 | |
325 while (*p) { | |
326 if (*p++ == ' ') { | |
327 goto length; | |
328 } | |
329 } | |
330 | |
331 goto no_valid; | |
332 | |
333 length: | |
334 | |
335 len = p; | |
336 | |
337 while (*p && *p++ != CR) { /* void */ } | |
338 | |
339 r->headers_out.content_length_n = ngx_atoof(len, p - len - 1); | |
340 if (r->headers_out.content_length_n == -1) { | |
341 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
342 "memcached sent invalid length in response \"%V\" " | |
343 "for key \"%V\"", | |
344 &line, &r->uri); | |
345 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
346 } | |
347 | |
348 u->headers_in.status_n = 200; | |
349 u->buffer.pos = p + 1; | |
350 | |
351 return NGX_OK; | |
352 } | |
353 | |
354 if (ngx_strcmp(p, "END\x0d") == 0) { | |
355 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, | |
356 "key: \"%V\" was not found by memcached", &r->uri); | |
357 | |
358 u->headers_in.status_n = 404; | |
359 | |
360 return NGX_OK; | |
361 } | |
362 | |
363 no_valid: | |
364 | |
365 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
366 "memcached sent invalid response: \"%V\"", &line); | |
367 | |
368 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
369 } | |
370 | |
371 | |
372 static ngx_int_t | |
373 ngx_http_memcached_filter_init(void *data) | |
374 { | |
375 ngx_http_memcached_ctx_t *ctx = data; | |
376 | |
377 ngx_http_upstream_t *u; | |
378 | |
379 u = ctx->request->upstream; | |
380 | |
381 u->length += NGX_HTTP_MEMCACHED_END; | |
382 | |
383 return NGX_OK; | |
384 } | |
385 | |
386 | |
387 static ngx_int_t | |
388 ngx_http_memcached_filter(void *data, ssize_t bytes) | |
389 { | |
390 ngx_http_memcached_ctx_t *ctx = data; | |
391 | |
392 u_char *last; | |
393 ngx_buf_t *b; | |
394 ngx_chain_t *cl, **ll; | |
395 ngx_http_upstream_t *u; | |
396 | |
397 u = ctx->request->upstream; | |
398 b = &u->buffer; | |
399 | |
400 if (u->length == ctx->rest) { | |
401 | |
402 if (ngx_strncmp(b->last, | |
403 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END | |
404 - ctx->rest, | |
405 bytes) != 0) | |
406 { | |
407 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
408 "memcached sent invalid trailer"); | |
409 } | |
410 | |
411 u->length -= bytes; | |
412 ctx->rest -= bytes; | |
413 | |
414 return NGX_OK; | |
415 } | |
416 | |
417 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
418 ll = &cl->next; | |
419 } | |
420 | |
421 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs); | |
422 if (cl == NULL) { | |
423 return NGX_ERROR; | |
424 } | |
425 | |
426 cl->buf->flush = 1; | |
427 cl->buf->memory = 1; | |
428 | |
429 *ll = cl; | |
430 | |
431 cl->buf->pos = b->last; | |
432 b->last += bytes; | |
433 cl->buf->last = b->last; | |
434 | |
435 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0, | |
436 "memcached filter bytes:%z size:%z length:%z rest:%z", | |
437 bytes, b->last - b->pos, u->length, ctx->rest); | |
438 | |
439 if (b->last - b->pos <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) { | |
440 u->length -= bytes; | |
441 return NGX_OK; | |
442 } | |
443 | |
444 | |
445 last = b->pos + u->length - NGX_HTTP_MEMCACHED_END; | |
446 | |
447 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) { | |
448 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
449 "memcached sent invalid trailer"); | |
450 } | |
451 | |
452 ctx->rest = u->length - (b->last - b->pos); | |
453 b->last = last; | |
454 cl->buf->last = last; | |
455 u->length = ctx->rest; | |
456 | |
457 return NGX_OK; | |
458 } | |
459 | |
460 | |
461 static void | |
462 ngx_http_memcached_abort_request(ngx_http_request_t *r) | |
463 { | |
464 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
465 "abort http memcached request"); | |
466 return; | |
467 } | |
468 | |
469 | |
470 static void | |
471 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
472 { | |
473 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
474 "finalize http memcached request"); | |
475 return; | |
476 } | |
477 | |
478 | |
479 static void * | |
480 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf) | |
481 { | |
482 ngx_http_memcached_loc_conf_t *conf; | |
483 | |
484 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t)); | |
485 if (conf == NULL) { | |
486 return NGX_CONF_ERROR; | |
487 } | |
488 | |
489 /* | |
490 * set by ngx_pcalloc(): | |
491 * | |
492 * conf->upstream.bufs.num = 0; | |
493 * conf->upstream.next_upstream = 0; | |
494 * conf->upstream.temp_path = NULL; | |
495 * conf->upstream.schema = { 0, NULL }; | |
496 * conf->upstream.uri = { 0, NULL }; | |
497 * conf->upstream.location = NULL; | |
498 * | |
499 * conf->peers = NULL; | |
500 */ | |
501 | |
502 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
503 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
504 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
505 | |
506 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
507 | |
508 conf->upstream.max_fails = NGX_CONF_UNSET_UINT; | |
509 conf->upstream.fail_timeout = NGX_CONF_UNSET; | |
510 | |
511 /* "fastcgi_cyclic_temp_file" is disabled */ | |
512 conf->upstream.cyclic_temp_file = 0; | |
513 | |
514 /* the hardcoded values */ | |
515 conf->upstream.send_lowat = 0; | |
516 conf->upstream.bufs.num = 0; | |
517 conf->upstream.busy_buffers_size = 0; | |
518 conf->upstream.max_temp_file_size = 0; | |
519 conf->upstream.temp_file_write_size = 0; | |
520 conf->upstream.pass_x_powered_by = 0; | |
521 conf->upstream.redirect_errors = 1; | |
522 conf->upstream.redirect_404 = 1; | |
523 conf->upstream.pass_server = 1; | |
524 conf->upstream.pass_date = 1; | |
525 conf->upstream.pass_request_headers = 0; | |
526 conf->upstream.pass_request_body = 0; | |
527 | |
528 return conf; | |
529 } | |
530 | |
531 | |
532 static char * | |
533 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
534 { | |
535 ngx_http_memcached_loc_conf_t *prev = parent; | |
536 ngx_http_memcached_loc_conf_t *conf = child; | |
537 | |
538 ngx_uint_t i; | |
539 | |
540 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
541 prev->upstream.connect_timeout, 60000); | |
542 | |
543 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
544 prev->upstream.send_timeout, 60000); | |
545 | |
546 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
547 prev->upstream.read_timeout, 60000); | |
548 | |
549 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
550 prev->upstream.buffer_size, | |
551 (size_t) ngx_pagesize); | |
552 | |
553 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
554 prev->upstream.next_upstream, | |
555 (NGX_CONF_BITMASK_SET | |
556 |NGX_HTTP_UPSTREAM_FT_ERROR | |
557 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
558 | |
559 ngx_conf_merge_unsigned_value(conf->upstream.max_fails, | |
560 prev->upstream.max_fails, 1); | |
561 | |
562 ngx_conf_merge_sec_value(conf->upstream.fail_timeout, | |
563 prev->upstream.fail_timeout, 10); | |
564 | |
565 if (conf->peers && conf->peers->number > 1) { | |
566 for (i = 0; i < conf->peers->number; i++) { | |
567 conf->peers->peer[i].weight = 1; | |
568 conf->peers->peer[i].max_fails = conf->upstream.max_fails; | |
569 conf->peers->peer[i].fail_timeout = conf->upstream.fail_timeout; | |
570 } | |
571 } | |
572 | |
573 return NGX_CONF_OK; | |
574 } | |
575 | |
576 | |
577 static char * | |
578 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
579 { | |
580 ngx_http_memcached_loc_conf_t *lcf = conf; | |
581 | |
582 ngx_str_t *value; | |
583 ngx_inet_upstream_t inet_upstream; | |
584 ngx_http_core_loc_conf_t *clcf; | |
585 | |
586 if (lcf->upstream.schema.len) { | |
587 return "is duplicate"; | |
588 } | |
589 | |
590 value = cf->args->elts; | |
591 | |
592 ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t)); | |
593 | |
594 inet_upstream.name = value[1]; | |
595 inet_upstream.url = value[1]; | |
596 | |
597 lcf->peers = ngx_inet_upstream_parse(cf, &inet_upstream); | |
598 if (lcf->peers == NULL) { | |
599 return NGX_CONF_ERROR; | |
600 } | |
601 | |
602 lcf->upstream.schema.len = sizeof("memcached://") - 1; | |
603 lcf->upstream.schema.data = (u_char *) "memcached://"; | |
604 | |
605 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
606 | |
607 clcf->handler = ngx_http_memcached_handler; | |
608 | |
609 lcf->upstream.location = clcf->name; | |
610 | |
611 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
612 clcf->auto_redirect = 1; | |
613 } | |
614 | |
615 return NGX_CONF_OK; | |
616 } |