Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_memcached_module.c @ 3124:53a02ff924e8
release-0.8.15 tag
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 14 Sep 2009 13:07:18 +0000 |
parents | f444f291ed38 |
children | fcd98af88df3 |
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_http.h> | |
10 | |
11 | |
12 typedef struct { | |
13 ngx_http_upstream_conf_t upstream; | |
1076 | 14 ngx_int_t index; |
581 | 15 } ngx_http_memcached_loc_conf_t; |
16 | |
17 | |
18 typedef struct { | |
19 size_t rest; | |
20 ngx_http_request_t *request; | |
597 | 21 ngx_str_t key; |
581 | 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 | |
884 | 41 static char *ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf, |
42 ngx_command_t *cmd, void *conf); | |
43 static char *ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf, | |
44 ngx_command_t *cmd, void *conf); | |
45 | |
581 | 46 |
47 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = { | |
48 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
49 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
50 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
51 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
665 | 52 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, |
581 | 53 { ngx_null_string, 0 } |
54 }; | |
55 | |
56 | |
57 static ngx_command_t ngx_http_memcached_commands[] = { | |
58 | |
59 { ngx_string("memcached_pass"), | |
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60 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, |
581 | 61 ngx_http_memcached_pass, |
62 NGX_HTTP_LOC_CONF_OFFSET, | |
63 0, | |
64 NULL }, | |
65 | |
66 { ngx_string("memcached_connect_timeout"), | |
67 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
68 ngx_conf_set_msec_slot, | |
69 NGX_HTTP_LOC_CONF_OFFSET, | |
70 offsetof(ngx_http_memcached_loc_conf_t, upstream.connect_timeout), | |
71 NULL }, | |
72 | |
73 { ngx_string("memcached_send_timeout"), | |
74 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
75 ngx_conf_set_msec_slot, | |
76 NGX_HTTP_LOC_CONF_OFFSET, | |
77 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout), | |
78 NULL }, | |
79 | |
80 { ngx_string("memcached_buffer_size"), | |
81 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
82 ngx_conf_set_size_slot, | |
83 NGX_HTTP_LOC_CONF_OFFSET, | |
84 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size), | |
85 NULL }, | |
86 | |
87 { ngx_string("memcached_read_timeout"), | |
88 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
89 ngx_conf_set_msec_slot, | |
90 NGX_HTTP_LOC_CONF_OFFSET, | |
91 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout), | |
92 NULL }, | |
93 | |
94 { ngx_string("memcached_next_upstream"), | |
95 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
96 ngx_conf_set_bitmask_slot, | |
97 NGX_HTTP_LOC_CONF_OFFSET, | |
98 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream), | |
99 &ngx_http_memcached_next_upstream_masks }, | |
100 | |
101 { ngx_string("memcached_upstream_max_fails"), | |
102 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
884 | 103 ngx_http_memcached_upstream_max_fails_unsupported, |
104 0, | |
105 0, | |
581 | 106 NULL }, |
107 | |
108 { ngx_string("memcached_upstream_fail_timeout"), | |
109 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
884 | 110 ngx_http_memcached_upstream_fail_timeout_unsupported, |
111 0, | |
112 0, | |
581 | 113 NULL }, |
114 | |
115 ngx_null_command | |
116 }; | |
117 | |
118 | |
667 | 119 static ngx_http_module_t ngx_http_memcached_module_ctx = { |
581 | 120 NULL, /* preconfiguration */ |
121 NULL, /* postconfiguration */ | |
122 | |
123 NULL, /* create main configuration */ | |
124 NULL, /* init main configuration */ | |
125 | |
126 NULL, /* create server configuration */ | |
127 NULL, /* merge server configuration */ | |
128 | |
129 ngx_http_memcached_create_loc_conf, /* create location configration */ | |
130 ngx_http_memcached_merge_loc_conf /* merge location configration */ | |
131 }; | |
132 | |
133 | |
134 ngx_module_t ngx_http_memcached_module = { | |
135 NGX_MODULE_V1, | |
136 &ngx_http_memcached_module_ctx, /* module context */ | |
137 ngx_http_memcached_commands, /* module directives */ | |
138 NGX_HTTP_MODULE, /* module type */ | |
139 NULL, /* init master */ | |
140 NULL, /* init module */ | |
141 NULL, /* init process */ | |
142 NULL, /* init thread */ | |
143 NULL, /* exit thread */ | |
144 NULL, /* exit process */ | |
145 NULL, /* exit master */ | |
146 NGX_MODULE_V1_PADDING | |
147 }; | |
148 | |
149 | |
1076 | 150 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key"); |
151 | |
152 | |
581 | 153 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1) |
154 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF; | |
155 | |
156 | |
157 static ngx_int_t | |
158 ngx_http_memcached_handler(ngx_http_request_t *r) | |
159 { | |
160 ngx_int_t rc; | |
161 ngx_http_upstream_t *u; | |
162 ngx_http_memcached_ctx_t *ctx; | |
163 ngx_http_memcached_loc_conf_t *mlcf; | |
164 | |
645 | 165 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { |
581 | 166 return NGX_HTTP_NOT_ALLOWED; |
167 } | |
168 | |
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169 rc = ngx_http_discard_request_body(r); |
581 | 170 |
1374 | 171 if (rc != NGX_OK) { |
581 | 172 return rc; |
173 } | |
174 | |
175 if (ngx_http_set_content_type(r) != NGX_OK) { | |
176 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
177 } | |
178 | |
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179 if (ngx_http_upstream_create(r) != NGX_OK) { |
581 | 180 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
181 } | |
182 | |
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183 u = r->upstream; |
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184 |
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185 u->schema.len = sizeof("memcached://") - 1; |
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186 u->schema.data = (u_char *) "memcached://"; |
1658 | 187 |
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188 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module; |
581 | 189 |
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190 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); |
581 | 191 |
192 u->conf = &mlcf->upstream; | |
193 | |
194 u->create_request = ngx_http_memcached_create_request; | |
195 u->reinit_request = ngx_http_memcached_reinit_request; | |
196 u->process_header = ngx_http_memcached_process_header; | |
197 u->abort_request = ngx_http_memcached_abort_request; | |
198 u->finalize_request = ngx_http_memcached_finalize_request; | |
199 | |
200 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t)); | |
201 if (ctx == NULL) { | |
202 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
203 } | |
204 | |
205 ctx->rest = NGX_HTTP_MEMCACHED_END; | |
206 ctx->request = r; | |
207 | |
597 | 208 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module); |
209 | |
581 | 210 u->input_filter_init = ngx_http_memcached_filter_init; |
211 u->input_filter = ngx_http_memcached_filter; | |
212 u->input_filter_ctx = ctx; | |
213 | |
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214 r->main->count++; |
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215 |
581 | 216 ngx_http_upstream_init(r); |
217 | |
218 return NGX_DONE; | |
219 } | |
220 | |
221 | |
222 static ngx_int_t | |
223 ngx_http_memcached_create_request(ngx_http_request_t *r) | |
224 { | |
1076 | 225 size_t len; |
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226 uintptr_t escape; |
1076 | 227 ngx_buf_t *b; |
228 ngx_chain_t *cl; | |
229 ngx_http_memcached_ctx_t *ctx; | |
230 ngx_http_variable_value_t *vv; | |
231 ngx_http_memcached_loc_conf_t *mlcf; | |
232 | |
233 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); | |
581 | 234 |
1076 | 235 vv = ngx_http_get_indexed_variable(r, mlcf->index); |
236 | |
237 if (vv == NULL || vv->not_found || vv->len == 0) { | |
238 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
239 "the \"$memcached_key\" variable is not set"); | |
240 return NGX_ERROR; | |
241 } | |
242 | |
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243 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED); |
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244 |
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245 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1; |
581 | 246 |
247 b = ngx_create_temp_buf(r->pool, len); | |
248 if (b == NULL) { | |
249 return NGX_ERROR; | |
250 } | |
251 | |
252 cl = ngx_alloc_chain_link(r->pool); | |
253 if (cl == NULL) { | |
254 return NGX_ERROR; | |
255 } | |
256 | |
257 cl->buf = b; | |
258 cl->next = NULL; | |
259 | |
260 r->upstream->request_bufs = cl; | |
261 | |
262 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' '; | |
263 | |
597 | 264 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module); |
265 | |
266 ctx->key.data = b->last; | |
267 | |
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268 if (escape == 0) { |
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269 b->last = ngx_copy(b->last, vv->data, vv->len); |
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270 |
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271 } else { |
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272 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len, |
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273 NGX_ESCAPE_MEMCACHED); |
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274 } |
581 | 275 |
597 | 276 ctx->key.len = b->last - ctx->key.data; |
581 | 277 |
278 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
597 | 279 "http memcached request: \"%V\"", &ctx->key); |
581 | 280 |
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281 *b->last++ = CR; *b->last++ = LF; |
581 | 282 |
283 return NGX_OK; | |
284 } | |
285 | |
286 | |
287 static ngx_int_t | |
288 ngx_http_memcached_reinit_request(ngx_http_request_t *r) | |
289 { | |
290 return NGX_OK; | |
291 } | |
292 | |
293 | |
294 static ngx_int_t | |
295 ngx_http_memcached_process_header(ngx_http_request_t *r) | |
296 { | |
597 | 297 u_char *p, *len; |
298 ngx_str_t line; | |
299 ngx_http_upstream_t *u; | |
300 ngx_http_memcached_ctx_t *ctx; | |
581 | 301 |
302 u = r->upstream; | |
303 | |
304 for (p = u->buffer.pos; p < u->buffer.last; p++) { | |
305 if (*p == LF) { | |
306 goto found; | |
307 } | |
308 } | |
309 | |
310 return NGX_AGAIN; | |
311 | |
312 found: | |
313 | |
314 *p = '\0'; | |
315 | |
316 line.len = p - u->buffer.pos - 1; | |
317 line.data = u->buffer.pos; | |
318 | |
319 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
320 "memcached: \"%V\"", &line); | |
321 | |
322 p = u->buffer.pos; | |
323 | |
597 | 324 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module); |
325 | |
581 | 326 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) { |
327 | |
328 p += sizeof("VALUE ") - 1; | |
329 | |
597 | 330 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) { |
581 | 331 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
332 "memcached sent invalid key in response \"%V\" " | |
333 "for key \"%V\"", | |
597 | 334 &line, &ctx->key); |
581 | 335 |
336 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
337 } | |
338 | |
597 | 339 p += ctx->key.len; |
581 | 340 |
341 if (*p++ != ' ') { | |
342 goto no_valid; | |
343 } | |
344 | |
345 /* skip flags */ | |
346 | |
347 while (*p) { | |
348 if (*p++ == ' ') { | |
349 goto length; | |
350 } | |
351 } | |
352 | |
353 goto no_valid; | |
354 | |
355 length: | |
356 | |
357 len = p; | |
358 | |
359 while (*p && *p++ != CR) { /* void */ } | |
360 | |
361 r->headers_out.content_length_n = ngx_atoof(len, p - len - 1); | |
362 if (r->headers_out.content_length_n == -1) { | |
363 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
364 "memcached sent invalid length in response \"%V\" " | |
365 "for key \"%V\"", | |
597 | 366 &line, &ctx->key); |
581 | 367 return NGX_HTTP_UPSTREAM_INVALID_HEADER; |
368 } | |
369 | |
370 u->headers_in.status_n = 200; | |
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371 u->state->status = 200; |
581 | 372 u->buffer.pos = p + 1; |
373 | |
374 return NGX_OK; | |
375 } | |
376 | |
377 if (ngx_strcmp(p, "END\x0d") == 0) { | |
378 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, | |
597 | 379 "key: \"%V\" was not found by memcached", &ctx->key); |
581 | 380 |
381 u->headers_in.status_n = 404; | |
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382 u->state->status = 404; |
581 | 383 |
384 return NGX_OK; | |
385 } | |
386 | |
387 no_valid: | |
388 | |
389 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
390 "memcached sent invalid response: \"%V\"", &line); | |
391 | |
392 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
393 } | |
394 | |
395 | |
396 static ngx_int_t | |
397 ngx_http_memcached_filter_init(void *data) | |
398 { | |
399 ngx_http_memcached_ctx_t *ctx = data; | |
400 | |
401 ngx_http_upstream_t *u; | |
402 | |
403 u = ctx->request->upstream; | |
404 | |
405 u->length += NGX_HTTP_MEMCACHED_END; | |
406 | |
407 return NGX_OK; | |
408 } | |
409 | |
410 | |
411 static ngx_int_t | |
412 ngx_http_memcached_filter(void *data, ssize_t bytes) | |
413 { | |
414 ngx_http_memcached_ctx_t *ctx = data; | |
415 | |
416 u_char *last; | |
417 ngx_buf_t *b; | |
418 ngx_chain_t *cl, **ll; | |
419 ngx_http_upstream_t *u; | |
420 | |
421 u = ctx->request->upstream; | |
422 b = &u->buffer; | |
423 | |
424 if (u->length == ctx->rest) { | |
425 | |
426 if (ngx_strncmp(b->last, | |
1548 | 427 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest, |
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428 ctx->rest) |
1548 | 429 != 0) |
581 | 430 { |
431 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
432 "memcached sent invalid trailer"); | |
433 } | |
434 | |
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435 u->length = 0; |
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436 ctx->rest = 0; |
581 | 437 |
438 return NGX_OK; | |
439 } | |
440 | |
441 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
442 ll = &cl->next; | |
443 } | |
444 | |
445 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs); | |
446 if (cl == NULL) { | |
447 return NGX_ERROR; | |
448 } | |
449 | |
450 cl->buf->flush = 1; | |
451 cl->buf->memory = 1; | |
452 | |
453 *ll = cl; | |
454 | |
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455 last = b->last; |
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456 cl->buf->pos = last; |
581 | 457 b->last += bytes; |
458 cl->buf->last = b->last; | |
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459 cl->buf->tag = u->output.tag; |
581 | 460 |
461 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0, | |
462 "memcached filter bytes:%z size:%z length:%z rest:%z", | |
463 bytes, b->last - b->pos, u->length, ctx->rest); | |
464 | |
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465 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) { |
581 | 466 u->length -= bytes; |
467 return NGX_OK; | |
468 } | |
469 | |
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470 last += u->length - NGX_HTTP_MEMCACHED_END; |
581 | 471 |
472 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) { | |
473 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
474 "memcached sent invalid trailer"); | |
475 } | |
476 | |
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477 ctx->rest -= b->last - last; |
581 | 478 b->last = last; |
479 cl->buf->last = last; | |
480 u->length = ctx->rest; | |
481 | |
482 return NGX_OK; | |
483 } | |
484 | |
485 | |
486 static void | |
487 ngx_http_memcached_abort_request(ngx_http_request_t *r) | |
488 { | |
489 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
490 "abort http memcached request"); | |
491 return; | |
492 } | |
493 | |
494 | |
495 static void | |
496 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
497 { | |
498 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
499 "finalize http memcached request"); | |
500 return; | |
501 } | |
502 | |
503 | |
504 static void * | |
505 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf) | |
506 { | |
507 ngx_http_memcached_loc_conf_t *conf; | |
508 | |
509 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t)); | |
510 if (conf == NULL) { | |
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511 return NULL; |
581 | 512 } |
513 | |
514 /* | |
515 * set by ngx_pcalloc(): | |
516 * | |
517 * conf->upstream.bufs.num = 0; | |
518 * conf->upstream.next_upstream = 0; | |
519 * conf->upstream.temp_path = NULL; | |
520 * conf->upstream.uri = { 0, NULL }; | |
521 * conf->upstream.location = NULL; | |
522 */ | |
523 | |
524 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
525 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
526 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
527 | |
528 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
529 | |
884 | 530 /* the hardcoded values */ |
581 | 531 conf->upstream.cyclic_temp_file = 0; |
629 | 532 conf->upstream.buffering = 0; |
533 conf->upstream.ignore_client_abort = 0; | |
581 | 534 conf->upstream.send_lowat = 0; |
535 conf->upstream.bufs.num = 0; | |
536 conf->upstream.busy_buffers_size = 0; | |
537 conf->upstream.max_temp_file_size = 0; | |
538 conf->upstream.temp_file_write_size = 0; | |
657 | 539 conf->upstream.intercept_errors = 1; |
675 | 540 conf->upstream.intercept_404 = 1; |
581 | 541 conf->upstream.pass_request_headers = 0; |
542 conf->upstream.pass_request_body = 0; | |
543 | |
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544 conf->index = NGX_CONF_UNSET; |
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545 |
581 | 546 return conf; |
547 } | |
548 | |
549 | |
550 static char * | |
551 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
552 { | |
553 ngx_http_memcached_loc_conf_t *prev = parent; | |
554 ngx_http_memcached_loc_conf_t *conf = child; | |
555 | |
556 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
557 prev->upstream.connect_timeout, 60000); | |
558 | |
559 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
560 prev->upstream.send_timeout, 60000); | |
561 | |
562 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
563 prev->upstream.read_timeout, 60000); | |
564 | |
565 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
566 prev->upstream.buffer_size, | |
567 (size_t) ngx_pagesize); | |
568 | |
569 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
570 prev->upstream.next_upstream, | |
571 (NGX_CONF_BITMASK_SET | |
572 |NGX_HTTP_UPSTREAM_FT_ERROR | |
573 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
574 | |
665 | 575 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { |
576 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
577 |NGX_HTTP_UPSTREAM_FT_OFF; | |
578 } | |
579 | |
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580 if (conf->upstream.upstream == NULL) { |
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581 conf->upstream.upstream = prev->upstream.upstream; |
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582 } |
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583 |
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584 if (conf->index == NGX_CONF_UNSET) { |
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585 conf->index = prev->index; |
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586 } |
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587 |
581 | 588 return NGX_CONF_OK; |
589 } | |
590 | |
591 | |
592 static char * | |
593 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
594 { | |
2392 | 595 ngx_http_memcached_loc_conf_t *mlcf = conf; |
581 | 596 |
597 ngx_str_t *value; | |
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598 ngx_url_t u; |
581 | 599 ngx_http_core_loc_conf_t *clcf; |
600 | |
2392 | 601 if (mlcf->upstream.upstream) { |
581 | 602 return "is duplicate"; |
603 } | |
604 | |
605 value = cf->args->elts; | |
606 | |
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607 ngx_memzero(&u, sizeof(ngx_url_t)); |
581 | 608 |
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609 u.url = value[1]; |
884 | 610 u.no_resolve = 1; |
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611 |
2392 | 612 mlcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); |
613 if (mlcf->upstream.upstream == NULL) { | |
884 | 614 return NGX_CONF_ERROR; |
581 | 615 } |
616 | |
617 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
618 | |
619 clcf->handler = ngx_http_memcached_handler; | |
620 | |
621 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
622 clcf->auto_redirect = 1; | |
623 } | |
624 | |
2392 | 625 mlcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key); |
1076 | 626 |
2392 | 627 if (mlcf->index == NGX_ERROR) { |
1076 | 628 return NGX_CONF_ERROR; |
629 } | |
630 | |
581 | 631 return NGX_CONF_OK; |
632 } | |
884 | 633 |
634 | |
635 static char * | |
636 ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf, | |
637 ngx_command_t *cmd, void *conf) | |
638 { | |
639 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
640 "\"memcached_upstream_max_fails\" is not supported, " | |
641 "use the \"max_fails\" parameter of the \"server\" directive ", | |
642 "inside the \"upstream\" block"); | |
643 | |
644 return NGX_CONF_ERROR; | |
645 } | |
646 | |
647 | |
648 static char * | |
649 ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf, | |
650 ngx_command_t *cmd, void *conf) | |
651 { | |
652 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
653 "\"memcached_upstream_fail_timeout\" is not supported, " | |
654 "use the \"fail_timeout\" parameter of the \"server\" directive ", | |
655 "inside the \"upstream\" block"); | |
656 | |
657 return NGX_CONF_ERROR; | |
658 } |