Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_memcached_module.c @ 1179:6e2216ad2c87
$request_time has millisecond precision
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Sat, 21 Apr 2007 07:50:19 +0000 |
parents | 2d8e72584534 |
children | 82a8ffe51d11 |
rev | line source |
---|---|
581 | 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; | |
1076 | 15 ngx_int_t index; |
581 | 16 } ngx_http_memcached_loc_conf_t; |
17 | |
18 | |
19 typedef struct { | |
20 size_t rest; | |
21 ngx_http_request_t *request; | |
597 | 22 ngx_str_t key; |
581 | 23 } ngx_http_memcached_ctx_t; |
24 | |
25 | |
26 static ngx_int_t ngx_http_memcached_create_request(ngx_http_request_t *r); | |
27 static ngx_int_t ngx_http_memcached_reinit_request(ngx_http_request_t *r); | |
28 static ngx_int_t ngx_http_memcached_process_header(ngx_http_request_t *r); | |
29 static ngx_int_t ngx_http_memcached_filter_init(void *data); | |
30 static ngx_int_t ngx_http_memcached_filter(void *data, ssize_t bytes); | |
31 static void ngx_http_memcached_abort_request(ngx_http_request_t *r); | |
32 static void ngx_http_memcached_finalize_request(ngx_http_request_t *r, | |
33 ngx_int_t rc); | |
34 | |
35 static void *ngx_http_memcached_create_loc_conf(ngx_conf_t *cf); | |
36 static char *ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, | |
37 void *parent, void *child); | |
38 | |
39 static char *ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
40 void *conf); | |
41 | |
884 | 42 static char *ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf, |
43 ngx_command_t *cmd, void *conf); | |
44 static char *ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf, | |
45 ngx_command_t *cmd, void *conf); | |
46 | |
581 | 47 |
48 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = { | |
49 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
50 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
51 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
52 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
665 | 53 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, |
581 | 54 { ngx_null_string, 0 } |
55 }; | |
56 | |
57 | |
58 static ngx_command_t ngx_http_memcached_commands[] = { | |
59 | |
60 { ngx_string("memcached_pass"), | |
61 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
62 ngx_http_memcached_pass, | |
63 NGX_HTTP_LOC_CONF_OFFSET, | |
64 0, | |
65 NULL }, | |
66 | |
67 { ngx_string("memcached_connect_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.connect_timeout), | |
72 NULL }, | |
73 | |
74 { ngx_string("memcached_send_timeout"), | |
75 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
76 ngx_conf_set_msec_slot, | |
77 NGX_HTTP_LOC_CONF_OFFSET, | |
78 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout), | |
79 NULL }, | |
80 | |
81 { ngx_string("memcached_buffer_size"), | |
82 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
83 ngx_conf_set_size_slot, | |
84 NGX_HTTP_LOC_CONF_OFFSET, | |
85 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size), | |
86 NULL }, | |
87 | |
88 { ngx_string("memcached_read_timeout"), | |
89 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
90 ngx_conf_set_msec_slot, | |
91 NGX_HTTP_LOC_CONF_OFFSET, | |
92 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout), | |
93 NULL }, | |
94 | |
95 { ngx_string("memcached_next_upstream"), | |
96 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
97 ngx_conf_set_bitmask_slot, | |
98 NGX_HTTP_LOC_CONF_OFFSET, | |
99 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream), | |
100 &ngx_http_memcached_next_upstream_masks }, | |
101 | |
102 { ngx_string("memcached_upstream_max_fails"), | |
103 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
884 | 104 ngx_http_memcached_upstream_max_fails_unsupported, |
105 0, | |
106 0, | |
581 | 107 NULL }, |
108 | |
109 { ngx_string("memcached_upstream_fail_timeout"), | |
110 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
884 | 111 ngx_http_memcached_upstream_fail_timeout_unsupported, |
112 0, | |
113 0, | |
581 | 114 NULL }, |
115 | |
116 ngx_null_command | |
117 }; | |
118 | |
119 | |
667 | 120 static ngx_http_module_t ngx_http_memcached_module_ctx = { |
581 | 121 NULL, /* preconfiguration */ |
122 NULL, /* postconfiguration */ | |
123 | |
124 NULL, /* create main configuration */ | |
125 NULL, /* init main configuration */ | |
126 | |
127 NULL, /* create server configuration */ | |
128 NULL, /* merge server configuration */ | |
129 | |
130 ngx_http_memcached_create_loc_conf, /* create location configration */ | |
131 ngx_http_memcached_merge_loc_conf /* merge location configration */ | |
132 }; | |
133 | |
134 | |
135 ngx_module_t ngx_http_memcached_module = { | |
136 NGX_MODULE_V1, | |
137 &ngx_http_memcached_module_ctx, /* module context */ | |
138 ngx_http_memcached_commands, /* module directives */ | |
139 NGX_HTTP_MODULE, /* module type */ | |
140 NULL, /* init master */ | |
141 NULL, /* init module */ | |
142 NULL, /* init process */ | |
143 NULL, /* init thread */ | |
144 NULL, /* exit thread */ | |
145 NULL, /* exit process */ | |
146 NULL, /* exit master */ | |
147 NGX_MODULE_V1_PADDING | |
148 }; | |
149 | |
150 | |
1076 | 151 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key"); |
152 | |
153 | |
581 | 154 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1) |
155 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF; | |
156 | |
157 | |
158 static ngx_int_t | |
159 ngx_http_memcached_handler(ngx_http_request_t *r) | |
160 { | |
161 ngx_int_t rc; | |
162 ngx_http_upstream_t *u; | |
163 ngx_http_memcached_ctx_t *ctx; | |
164 ngx_http_memcached_loc_conf_t *mlcf; | |
165 | |
645 | 166 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { |
581 | 167 return NGX_HTTP_NOT_ALLOWED; |
168 } | |
169 | |
170 rc = ngx_http_discard_body(r); | |
171 | |
172 if (rc != NGX_OK && rc != NGX_AGAIN) { | |
173 return rc; | |
174 } | |
175 | |
176 if (ngx_http_set_content_type(r) != NGX_OK) { | |
177 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
178 } | |
179 | |
180 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); | |
181 | |
182 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t)); | |
183 if (u == NULL) { | |
184 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
185 } | |
186 | |
187 u->peer.log = r->connection->log; | |
188 u->peer.log_error = NGX_ERROR_ERR; | |
189 #if (NGX_THREADS) | |
190 u->peer.lock = &r->connection->lock; | |
191 #endif | |
192 | |
193 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module; | |
194 | |
195 u->conf = &mlcf->upstream; | |
196 | |
197 u->create_request = ngx_http_memcached_create_request; | |
198 u->reinit_request = ngx_http_memcached_reinit_request; | |
199 u->process_header = ngx_http_memcached_process_header; | |
200 u->abort_request = ngx_http_memcached_abort_request; | |
201 u->finalize_request = ngx_http_memcached_finalize_request; | |
202 | |
203 r->upstream = u; | |
204 | |
205 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t)); | |
206 if (ctx == NULL) { | |
207 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
208 } | |
209 | |
210 ctx->rest = NGX_HTTP_MEMCACHED_END; | |
211 ctx->request = r; | |
212 | |
597 | 213 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module); |
214 | |
581 | 215 u->input_filter_init = ngx_http_memcached_filter_init; |
216 u->input_filter = ngx_http_memcached_filter; | |
217 u->input_filter_ctx = ctx; | |
218 | |
219 ngx_http_upstream_init(r); | |
220 | |
221 return NGX_DONE; | |
222 } | |
223 | |
224 | |
225 static ngx_int_t | |
226 ngx_http_memcached_create_request(ngx_http_request_t *r) | |
227 { | |
1076 | 228 size_t len; |
229 ngx_buf_t *b; | |
230 ngx_chain_t *cl; | |
231 ngx_http_memcached_ctx_t *ctx; | |
232 ngx_http_variable_value_t *vv; | |
233 ngx_http_memcached_loc_conf_t *mlcf; | |
234 | |
235 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); | |
581 | 236 |
1076 | 237 vv = ngx_http_get_indexed_variable(r, mlcf->index); |
238 | |
239 if (vv == NULL || vv->not_found || vv->len == 0) { | |
240 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
241 "the \"$memcached_key\" variable is not set"); | |
242 return NGX_ERROR; | |
243 } | |
244 | |
1088
2d8e72584534
eliminate the useless space symbol
Igor Sysoev <igor@sysoev.ru>
parents:
1076
diff
changeset
|
245 len = sizeof("get ") - 1 + vv->len + sizeof(CRLF) - 1; |
1076 | 246 if (vv->len) { |
247 len += 1 + vv->len; | |
581 | 248 } |
249 | |
250 b = ngx_create_temp_buf(r->pool, len); | |
251 if (b == NULL) { | |
252 return NGX_ERROR; | |
253 } | |
254 | |
255 cl = ngx_alloc_chain_link(r->pool); | |
256 if (cl == NULL) { | |
257 return NGX_ERROR; | |
258 } | |
259 | |
260 cl->buf = b; | |
261 cl->next = NULL; | |
262 | |
263 r->upstream->request_bufs = cl; | |
264 | |
265 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' '; | |
266 | |
597 | 267 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module); |
268 | |
269 ctx->key.data = b->last; | |
270 | |
1076 | 271 b->last = ngx_copy(b->last, vv->data, vv->len); |
581 | 272 |
597 | 273 ctx->key.len = b->last - ctx->key.data; |
581 | 274 |
275 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
597 | 276 "http memcached request: \"%V\"", &ctx->key); |
581 | 277 |
1088
2d8e72584534
eliminate the useless space symbol
Igor Sysoev <igor@sysoev.ru>
parents:
1076
diff
changeset
|
278 *b->last++ = CR; *b->last++ = LF; |
581 | 279 |
280 return NGX_OK; | |
281 } | |
282 | |
283 | |
284 static ngx_int_t | |
285 ngx_http_memcached_reinit_request(ngx_http_request_t *r) | |
286 { | |
287 return NGX_OK; | |
288 } | |
289 | |
290 | |
291 static ngx_int_t | |
292 ngx_http_memcached_process_header(ngx_http_request_t *r) | |
293 { | |
597 | 294 u_char *p, *len; |
295 ngx_str_t line; | |
296 ngx_http_upstream_t *u; | |
297 ngx_http_memcached_ctx_t *ctx; | |
581 | 298 |
299 u = r->upstream; | |
300 | |
301 for (p = u->buffer.pos; p < u->buffer.last; p++) { | |
302 if (*p == LF) { | |
303 goto found; | |
304 } | |
305 } | |
306 | |
307 return NGX_AGAIN; | |
308 | |
309 found: | |
310 | |
311 *p = '\0'; | |
312 | |
313 line.len = p - u->buffer.pos - 1; | |
314 line.data = u->buffer.pos; | |
315 | |
316 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
317 "memcached: \"%V\"", &line); | |
318 | |
319 p = u->buffer.pos; | |
320 | |
597 | 321 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module); |
322 | |
581 | 323 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) { |
324 | |
325 p += sizeof("VALUE ") - 1; | |
326 | |
597 | 327 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) { |
581 | 328 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
329 "memcached sent invalid key in response \"%V\" " | |
330 "for key \"%V\"", | |
597 | 331 &line, &ctx->key); |
581 | 332 |
333 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
334 } | |
335 | |
597 | 336 p += ctx->key.len; |
581 | 337 |
338 if (*p++ != ' ') { | |
339 goto no_valid; | |
340 } | |
341 | |
342 /* skip flags */ | |
343 | |
344 while (*p) { | |
345 if (*p++ == ' ') { | |
346 goto length; | |
347 } | |
348 } | |
349 | |
350 goto no_valid; | |
351 | |
352 length: | |
353 | |
354 len = p; | |
355 | |
356 while (*p && *p++ != CR) { /* void */ } | |
357 | |
358 r->headers_out.content_length_n = ngx_atoof(len, p - len - 1); | |
359 if (r->headers_out.content_length_n == -1) { | |
360 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
361 "memcached sent invalid length in response \"%V\" " | |
362 "for key \"%V\"", | |
597 | 363 &line, &ctx->key); |
581 | 364 return NGX_HTTP_UPSTREAM_INVALID_HEADER; |
365 } | |
366 | |
367 u->headers_in.status_n = 200; | |
368 u->buffer.pos = p + 1; | |
369 | |
370 return NGX_OK; | |
371 } | |
372 | |
373 if (ngx_strcmp(p, "END\x0d") == 0) { | |
374 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, | |
597 | 375 "key: \"%V\" was not found by memcached", &ctx->key); |
581 | 376 |
377 u->headers_in.status_n = 404; | |
378 | |
379 return NGX_OK; | |
380 } | |
381 | |
382 no_valid: | |
383 | |
384 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
385 "memcached sent invalid response: \"%V\"", &line); | |
386 | |
387 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
388 } | |
389 | |
390 | |
391 static ngx_int_t | |
392 ngx_http_memcached_filter_init(void *data) | |
393 { | |
394 ngx_http_memcached_ctx_t *ctx = data; | |
395 | |
396 ngx_http_upstream_t *u; | |
397 | |
398 u = ctx->request->upstream; | |
399 | |
400 u->length += NGX_HTTP_MEMCACHED_END; | |
401 | |
402 return NGX_OK; | |
403 } | |
404 | |
405 | |
406 static ngx_int_t | |
407 ngx_http_memcached_filter(void *data, ssize_t bytes) | |
408 { | |
409 ngx_http_memcached_ctx_t *ctx = data; | |
410 | |
411 u_char *last; | |
412 ngx_buf_t *b; | |
413 ngx_chain_t *cl, **ll; | |
414 ngx_http_upstream_t *u; | |
415 | |
416 u = ctx->request->upstream; | |
417 b = &u->buffer; | |
418 | |
419 if (u->length == ctx->rest) { | |
420 | |
421 if (ngx_strncmp(b->last, | |
422 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END | |
423 - ctx->rest, | |
424 bytes) != 0) | |
425 { | |
426 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
427 "memcached sent invalid trailer"); | |
428 } | |
429 | |
430 u->length -= bytes; | |
431 ctx->rest -= bytes; | |
432 | |
433 return NGX_OK; | |
434 } | |
435 | |
436 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
437 ll = &cl->next; | |
438 } | |
439 | |
440 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs); | |
441 if (cl == NULL) { | |
442 return NGX_ERROR; | |
443 } | |
444 | |
445 cl->buf->flush = 1; | |
446 cl->buf->memory = 1; | |
447 | |
448 *ll = cl; | |
449 | |
450 cl->buf->pos = b->last; | |
451 b->last += bytes; | |
452 cl->buf->last = b->last; | |
453 | |
454 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0, | |
455 "memcached filter bytes:%z size:%z length:%z rest:%z", | |
456 bytes, b->last - b->pos, u->length, ctx->rest); | |
457 | |
458 if (b->last - b->pos <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) { | |
459 u->length -= bytes; | |
460 return NGX_OK; | |
461 } | |
462 | |
463 | |
464 last = b->pos + u->length - NGX_HTTP_MEMCACHED_END; | |
465 | |
466 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) { | |
467 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
468 "memcached sent invalid trailer"); | |
469 } | |
470 | |
471 ctx->rest = u->length - (b->last - b->pos); | |
472 b->last = last; | |
473 cl->buf->last = last; | |
474 u->length = ctx->rest; | |
475 | |
476 return NGX_OK; | |
477 } | |
478 | |
479 | |
480 static void | |
481 ngx_http_memcached_abort_request(ngx_http_request_t *r) | |
482 { | |
483 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
484 "abort http memcached request"); | |
485 return; | |
486 } | |
487 | |
488 | |
489 static void | |
490 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
491 { | |
492 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
493 "finalize http memcached request"); | |
494 return; | |
495 } | |
496 | |
497 | |
498 static void * | |
499 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf) | |
500 { | |
501 ngx_http_memcached_loc_conf_t *conf; | |
502 | |
503 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t)); | |
504 if (conf == NULL) { | |
505 return NGX_CONF_ERROR; | |
506 } | |
507 | |
508 /* | |
509 * set by ngx_pcalloc(): | |
510 * | |
511 * conf->upstream.bufs.num = 0; | |
512 * conf->upstream.next_upstream = 0; | |
513 * conf->upstream.temp_path = NULL; | |
514 * conf->upstream.schema = { 0, NULL }; | |
515 * conf->upstream.uri = { 0, NULL }; | |
516 * conf->upstream.location = NULL; | |
517 * | |
1076 | 518 * conf->index = 0; |
581 | 519 */ |
520 | |
521 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
522 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
523 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
524 | |
525 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
526 | |
884 | 527 /* the hardcoded values */ |
581 | 528 conf->upstream.cyclic_temp_file = 0; |
629 | 529 conf->upstream.buffering = 0; |
530 conf->upstream.ignore_client_abort = 0; | |
581 | 531 conf->upstream.send_lowat = 0; |
532 conf->upstream.bufs.num = 0; | |
533 conf->upstream.busy_buffers_size = 0; | |
534 conf->upstream.max_temp_file_size = 0; | |
535 conf->upstream.temp_file_write_size = 0; | |
657 | 536 conf->upstream.intercept_errors = 1; |
675 | 537 conf->upstream.intercept_404 = 1; |
581 | 538 conf->upstream.pass_request_headers = 0; |
539 conf->upstream.pass_request_body = 0; | |
540 | |
541 return conf; | |
542 } | |
543 | |
544 | |
545 static char * | |
546 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
547 { | |
548 ngx_http_memcached_loc_conf_t *prev = parent; | |
549 ngx_http_memcached_loc_conf_t *conf = child; | |
550 | |
551 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
552 prev->upstream.connect_timeout, 60000); | |
553 | |
554 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
555 prev->upstream.send_timeout, 60000); | |
556 | |
557 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
558 prev->upstream.read_timeout, 60000); | |
559 | |
560 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
561 prev->upstream.buffer_size, | |
562 (size_t) ngx_pagesize); | |
563 | |
564 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
565 prev->upstream.next_upstream, | |
566 (NGX_CONF_BITMASK_SET | |
567 |NGX_HTTP_UPSTREAM_FT_ERROR | |
568 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
569 | |
665 | 570 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { |
571 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
572 |NGX_HTTP_UPSTREAM_FT_OFF; | |
573 } | |
574 | |
581 | 575 return NGX_CONF_OK; |
576 } | |
577 | |
578 | |
579 static char * | |
580 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
581 { | |
582 ngx_http_memcached_loc_conf_t *lcf = conf; | |
583 | |
584 ngx_str_t *value; | |
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585 ngx_url_t u; |
581 | 586 ngx_http_core_loc_conf_t *clcf; |
587 | |
588 if (lcf->upstream.schema.len) { | |
589 return "is duplicate"; | |
590 } | |
591 | |
592 value = cf->args->elts; | |
593 | |
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594 ngx_memzero(&u, sizeof(ngx_url_t)); |
581 | 595 |
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596 u.url = value[1]; |
884 | 597 u.no_resolve = 1; |
598 /* u.uri_part = 1; may be used as namespace */ | |
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599 |
884 | 600 lcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); |
601 if (lcf->upstream.upstream == NULL) { | |
602 return NGX_CONF_ERROR; | |
581 | 603 } |
604 | |
605 lcf->upstream.schema.len = sizeof("memcached://") - 1; | |
606 lcf->upstream.schema.data = (u_char *) "memcached://"; | |
607 | |
608 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
609 | |
610 clcf->handler = ngx_http_memcached_handler; | |
611 | |
612 lcf->upstream.location = clcf->name; | |
613 | |
614 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
615 clcf->auto_redirect = 1; | |
616 } | |
617 | |
1076 | 618 lcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key); |
619 | |
620 if (lcf->index == NGX_ERROR) { | |
621 return NGX_CONF_ERROR; | |
622 } | |
623 | |
581 | 624 return NGX_CONF_OK; |
625 } | |
884 | 626 |
627 | |
628 static char * | |
629 ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf, | |
630 ngx_command_t *cmd, void *conf) | |
631 { | |
632 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
633 "\"memcached_upstream_max_fails\" is not supported, " | |
634 "use the \"max_fails\" parameter of the \"server\" directive ", | |
635 "inside the \"upstream\" block"); | |
636 | |
637 return NGX_CONF_ERROR; | |
638 } | |
639 | |
640 | |
641 static char * | |
642 ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf, | |
643 ngx_command_t *cmd, void *conf) | |
644 { | |
645 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
646 "\"memcached_upstream_fail_timeout\" is not supported, " | |
647 "use the \"fail_timeout\" parameter of the \"server\" directive ", | |
648 "inside the \"upstream\" block"); | |
649 | |
650 return NGX_CONF_ERROR; | |
651 } |