Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_memcached_module.c @ 4461:103587c7ae5f
Proxy: renamed some "proxy_redirect" related declarations to a more general and
reusable.
No functional changes.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Mon, 13 Feb 2012 10:42:44 +0000 |
parents | d620f497c50f |
children | 778ef9c3fd2d |
rev | line source |
---|---|
581 | 1 |
2 /* | |
3 * Copyright (C) Igor Sysoev | |
4412 | 4 * Copyright (C) Nginx, Inc. |
581 | 5 */ |
6 | |
7 | |
8 #include <ngx_config.h> | |
9 #include <ngx_core.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 | |
42 | |
43 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = { | |
44 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
45 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
46 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
47 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
665 | 48 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, |
581 | 49 { ngx_null_string, 0 } |
50 }; | |
51 | |
52 | |
53 static ngx_command_t ngx_http_memcached_commands[] = { | |
54 | |
55 { ngx_string("memcached_pass"), | |
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56 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, |
581 | 57 ngx_http_memcached_pass, |
58 NGX_HTTP_LOC_CONF_OFFSET, | |
59 0, | |
60 NULL }, | |
61 | |
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62 { ngx_string("memcached_bind"), |
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63 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
3399 | 64 ngx_http_upstream_bind_set_slot, |
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65 NGX_HTTP_LOC_CONF_OFFSET, |
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66 offsetof(ngx_http_memcached_loc_conf_t, upstream.local), |
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67 NULL }, |
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68 |
581 | 69 { ngx_string("memcached_connect_timeout"), |
70 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
71 ngx_conf_set_msec_slot, | |
72 NGX_HTTP_LOC_CONF_OFFSET, | |
73 offsetof(ngx_http_memcached_loc_conf_t, upstream.connect_timeout), | |
74 NULL }, | |
75 | |
76 { ngx_string("memcached_send_timeout"), | |
77 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
78 ngx_conf_set_msec_slot, | |
79 NGX_HTTP_LOC_CONF_OFFSET, | |
80 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout), | |
81 NULL }, | |
82 | |
83 { ngx_string("memcached_buffer_size"), | |
84 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
85 ngx_conf_set_size_slot, | |
86 NGX_HTTP_LOC_CONF_OFFSET, | |
87 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size), | |
88 NULL }, | |
89 | |
90 { ngx_string("memcached_read_timeout"), | |
91 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
92 ngx_conf_set_msec_slot, | |
93 NGX_HTTP_LOC_CONF_OFFSET, | |
94 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout), | |
95 NULL }, | |
96 | |
97 { ngx_string("memcached_next_upstream"), | |
98 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
99 ngx_conf_set_bitmask_slot, | |
100 NGX_HTTP_LOC_CONF_OFFSET, | |
101 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream), | |
102 &ngx_http_memcached_next_upstream_masks }, | |
103 | |
104 ngx_null_command | |
105 }; | |
106 | |
107 | |
667 | 108 static ngx_http_module_t ngx_http_memcached_module_ctx = { |
581 | 109 NULL, /* preconfiguration */ |
110 NULL, /* postconfiguration */ | |
111 | |
112 NULL, /* create main configuration */ | |
113 NULL, /* init main configuration */ | |
114 | |
115 NULL, /* create server configuration */ | |
116 NULL, /* merge server configuration */ | |
117 | |
118 ngx_http_memcached_create_loc_conf, /* create location configration */ | |
119 ngx_http_memcached_merge_loc_conf /* merge location configration */ | |
120 }; | |
121 | |
122 | |
123 ngx_module_t ngx_http_memcached_module = { | |
124 NGX_MODULE_V1, | |
125 &ngx_http_memcached_module_ctx, /* module context */ | |
126 ngx_http_memcached_commands, /* module directives */ | |
127 NGX_HTTP_MODULE, /* module type */ | |
128 NULL, /* init master */ | |
129 NULL, /* init module */ | |
130 NULL, /* init process */ | |
131 NULL, /* init thread */ | |
132 NULL, /* exit thread */ | |
133 NULL, /* exit process */ | |
134 NULL, /* exit master */ | |
135 NGX_MODULE_V1_PADDING | |
136 }; | |
137 | |
138 | |
1076 | 139 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key"); |
140 | |
141 | |
581 | 142 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1) |
143 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF; | |
144 | |
145 | |
146 static ngx_int_t | |
147 ngx_http_memcached_handler(ngx_http_request_t *r) | |
148 { | |
149 ngx_int_t rc; | |
150 ngx_http_upstream_t *u; | |
151 ngx_http_memcached_ctx_t *ctx; | |
152 ngx_http_memcached_loc_conf_t *mlcf; | |
153 | |
645 | 154 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { |
581 | 155 return NGX_HTTP_NOT_ALLOWED; |
156 } | |
157 | |
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158 rc = ngx_http_discard_request_body(r); |
581 | 159 |
1374 | 160 if (rc != NGX_OK) { |
581 | 161 return rc; |
162 } | |
163 | |
164 if (ngx_http_set_content_type(r) != NGX_OK) { | |
165 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
166 } | |
167 | |
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168 if (ngx_http_upstream_create(r) != NGX_OK) { |
581 | 169 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
170 } | |
171 | |
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172 u = r->upstream; |
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173 |
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174 ngx_str_set(&u->schema, "memcached://"); |
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175 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module; |
581 | 176 |
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177 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); |
581 | 178 |
179 u->conf = &mlcf->upstream; | |
180 | |
181 u->create_request = ngx_http_memcached_create_request; | |
182 u->reinit_request = ngx_http_memcached_reinit_request; | |
183 u->process_header = ngx_http_memcached_process_header; | |
184 u->abort_request = ngx_http_memcached_abort_request; | |
185 u->finalize_request = ngx_http_memcached_finalize_request; | |
186 | |
187 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t)); | |
188 if (ctx == NULL) { | |
189 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
190 } | |
191 | |
192 ctx->rest = NGX_HTTP_MEMCACHED_END; | |
193 ctx->request = r; | |
194 | |
597 | 195 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module); |
196 | |
581 | 197 u->input_filter_init = ngx_http_memcached_filter_init; |
198 u->input_filter = ngx_http_memcached_filter; | |
199 u->input_filter_ctx = ctx; | |
200 | |
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201 r->main->count++; |
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202 |
581 | 203 ngx_http_upstream_init(r); |
204 | |
205 return NGX_DONE; | |
206 } | |
207 | |
208 | |
209 static ngx_int_t | |
210 ngx_http_memcached_create_request(ngx_http_request_t *r) | |
211 { | |
1076 | 212 size_t len; |
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213 uintptr_t escape; |
1076 | 214 ngx_buf_t *b; |
215 ngx_chain_t *cl; | |
216 ngx_http_memcached_ctx_t *ctx; | |
217 ngx_http_variable_value_t *vv; | |
218 ngx_http_memcached_loc_conf_t *mlcf; | |
219 | |
220 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); | |
581 | 221 |
1076 | 222 vv = ngx_http_get_indexed_variable(r, mlcf->index); |
223 | |
224 if (vv == NULL || vv->not_found || vv->len == 0) { | |
225 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
226 "the \"$memcached_key\" variable is not set"); | |
227 return NGX_ERROR; | |
228 } | |
229 | |
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230 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED); |
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231 |
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232 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1; |
581 | 233 |
234 b = ngx_create_temp_buf(r->pool, len); | |
235 if (b == NULL) { | |
236 return NGX_ERROR; | |
237 } | |
238 | |
239 cl = ngx_alloc_chain_link(r->pool); | |
240 if (cl == NULL) { | |
241 return NGX_ERROR; | |
242 } | |
243 | |
244 cl->buf = b; | |
245 cl->next = NULL; | |
246 | |
247 r->upstream->request_bufs = cl; | |
248 | |
249 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' '; | |
250 | |
597 | 251 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module); |
252 | |
253 ctx->key.data = b->last; | |
254 | |
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255 if (escape == 0) { |
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256 b->last = ngx_copy(b->last, vv->data, vv->len); |
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257 |
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258 } else { |
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259 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len, |
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260 NGX_ESCAPE_MEMCACHED); |
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261 } |
581 | 262 |
597 | 263 ctx->key.len = b->last - ctx->key.data; |
581 | 264 |
265 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
597 | 266 "http memcached request: \"%V\"", &ctx->key); |
581 | 267 |
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268 *b->last++ = CR; *b->last++ = LF; |
581 | 269 |
270 return NGX_OK; | |
271 } | |
272 | |
273 | |
274 static ngx_int_t | |
275 ngx_http_memcached_reinit_request(ngx_http_request_t *r) | |
276 { | |
277 return NGX_OK; | |
278 } | |
279 | |
280 | |
281 static ngx_int_t | |
282 ngx_http_memcached_process_header(ngx_http_request_t *r) | |
283 { | |
597 | 284 u_char *p, *len; |
285 ngx_str_t line; | |
286 ngx_http_upstream_t *u; | |
287 ngx_http_memcached_ctx_t *ctx; | |
581 | 288 |
289 u = r->upstream; | |
290 | |
291 for (p = u->buffer.pos; p < u->buffer.last; p++) { | |
292 if (*p == LF) { | |
293 goto found; | |
294 } | |
295 } | |
296 | |
297 return NGX_AGAIN; | |
298 | |
299 found: | |
300 | |
301 *p = '\0'; | |
302 | |
303 line.len = p - u->buffer.pos - 1; | |
304 line.data = u->buffer.pos; | |
305 | |
306 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
307 "memcached: \"%V\"", &line); | |
308 | |
309 p = u->buffer.pos; | |
310 | |
597 | 311 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module); |
312 | |
581 | 313 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) { |
314 | |
315 p += sizeof("VALUE ") - 1; | |
316 | |
597 | 317 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) { |
581 | 318 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
319 "memcached sent invalid key in response \"%V\" " | |
320 "for key \"%V\"", | |
597 | 321 &line, &ctx->key); |
581 | 322 |
323 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
324 } | |
325 | |
597 | 326 p += ctx->key.len; |
581 | 327 |
328 if (*p++ != ' ') { | |
329 goto no_valid; | |
330 } | |
331 | |
332 /* skip flags */ | |
333 | |
334 while (*p) { | |
335 if (*p++ == ' ') { | |
336 goto length; | |
337 } | |
338 } | |
339 | |
340 goto no_valid; | |
341 | |
342 length: | |
343 | |
344 len = p; | |
345 | |
346 while (*p && *p++ != CR) { /* void */ } | |
347 | |
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348 u->headers_in.content_length_n = ngx_atoof(len, p - len - 1); |
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349 if (u->headers_in.content_length_n == -1) { |
581 | 350 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
351 "memcached sent invalid length in response \"%V\" " | |
352 "for key \"%V\"", | |
597 | 353 &line, &ctx->key); |
581 | 354 return NGX_HTTP_UPSTREAM_INVALID_HEADER; |
355 } | |
356 | |
357 u->headers_in.status_n = 200; | |
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358 u->state->status = 200; |
581 | 359 u->buffer.pos = p + 1; |
360 | |
361 return NGX_OK; | |
362 } | |
363 | |
364 if (ngx_strcmp(p, "END\x0d") == 0) { | |
365 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, | |
597 | 366 "key: \"%V\" was not found by memcached", &ctx->key); |
581 | 367 |
368 u->headers_in.status_n = 404; | |
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369 u->state->status = 404; |
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370 u->keepalive = 1; |
581 | 371 |
372 return NGX_OK; | |
373 } | |
374 | |
375 no_valid: | |
376 | |
377 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
378 "memcached sent invalid response: \"%V\"", &line); | |
379 | |
380 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
381 } | |
382 | |
383 | |
384 static ngx_int_t | |
385 ngx_http_memcached_filter_init(void *data) | |
386 { | |
387 ngx_http_memcached_ctx_t *ctx = data; | |
388 | |
389 ngx_http_upstream_t *u; | |
390 | |
391 u = ctx->request->upstream; | |
392 | |
393 u->length += NGX_HTTP_MEMCACHED_END; | |
394 | |
395 return NGX_OK; | |
396 } | |
397 | |
398 | |
399 static ngx_int_t | |
400 ngx_http_memcached_filter(void *data, ssize_t bytes) | |
401 { | |
402 ngx_http_memcached_ctx_t *ctx = data; | |
403 | |
404 u_char *last; | |
405 ngx_buf_t *b; | |
406 ngx_chain_t *cl, **ll; | |
407 ngx_http_upstream_t *u; | |
408 | |
409 u = ctx->request->upstream; | |
410 b = &u->buffer; | |
411 | |
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412 if (u->length == (ssize_t) ctx->rest) { |
581 | 413 |
414 if (ngx_strncmp(b->last, | |
1548 | 415 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest, |
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416 bytes) |
1548 | 417 != 0) |
581 | 418 { |
419 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
420 "memcached sent invalid trailer"); | |
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421 |
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422 u->length = 0; |
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423 ctx->rest = 0; |
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424 |
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425 return NGX_OK; |
581 | 426 } |
427 | |
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428 u->length -= bytes; |
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429 ctx->rest -= bytes; |
581 | 430 |
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431 if (u->length == 0) { |
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432 u->keepalive = 1; |
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433 } |
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434 |
581 | 435 return NGX_OK; |
436 } | |
437 | |
438 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
439 ll = &cl->next; | |
440 } | |
441 | |
442 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs); | |
443 if (cl == NULL) { | |
444 return NGX_ERROR; | |
445 } | |
446 | |
447 cl->buf->flush = 1; | |
448 cl->buf->memory = 1; | |
449 | |
450 *ll = cl; | |
451 | |
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452 last = b->last; |
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453 cl->buf->pos = last; |
581 | 454 b->last += bytes; |
455 cl->buf->last = b->last; | |
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456 cl->buf->tag = u->output.tag; |
581 | 457 |
458 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0, | |
459 "memcached filter bytes:%z size:%z length:%z rest:%z", | |
460 bytes, b->last - b->pos, u->length, ctx->rest); | |
461 | |
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462 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) { |
581 | 463 u->length -= bytes; |
464 return NGX_OK; | |
465 } | |
466 | |
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467 last += u->length - NGX_HTTP_MEMCACHED_END; |
581 | 468 |
469 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) { | |
470 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
471 "memcached sent invalid trailer"); | |
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472 |
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473 b->last = last; |
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474 cl->buf->last = last; |
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475 u->length = 0; |
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476 ctx->rest = 0; |
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477 |
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478 return NGX_OK; |
581 | 479 } |
480 | |
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481 ctx->rest -= b->last - last; |
581 | 482 b->last = last; |
483 cl->buf->last = last; | |
484 u->length = ctx->rest; | |
485 | |
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486 if (u->length == 0) { |
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487 u->keepalive = 1; |
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488 } |
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489 |
581 | 490 return NGX_OK; |
491 } | |
492 | |
493 | |
494 static void | |
495 ngx_http_memcached_abort_request(ngx_http_request_t *r) | |
496 { | |
497 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
498 "abort http memcached request"); | |
499 return; | |
500 } | |
501 | |
502 | |
503 static void | |
504 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
505 { | |
506 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
507 "finalize http memcached request"); | |
508 return; | |
509 } | |
510 | |
511 | |
512 static void * | |
513 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf) | |
514 { | |
515 ngx_http_memcached_loc_conf_t *conf; | |
516 | |
517 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t)); | |
518 if (conf == NULL) { | |
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519 return NULL; |
581 | 520 } |
521 | |
522 /* | |
523 * set by ngx_pcalloc(): | |
524 * | |
525 * conf->upstream.bufs.num = 0; | |
526 * conf->upstream.next_upstream = 0; | |
527 * conf->upstream.temp_path = NULL; | |
528 * conf->upstream.uri = { 0, NULL }; | |
529 * conf->upstream.location = NULL; | |
530 */ | |
531 | |
532 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
533 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
534 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
535 | |
536 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
537 | |
884 | 538 /* the hardcoded values */ |
581 | 539 conf->upstream.cyclic_temp_file = 0; |
629 | 540 conf->upstream.buffering = 0; |
541 conf->upstream.ignore_client_abort = 0; | |
581 | 542 conf->upstream.send_lowat = 0; |
543 conf->upstream.bufs.num = 0; | |
544 conf->upstream.busy_buffers_size = 0; | |
545 conf->upstream.max_temp_file_size = 0; | |
546 conf->upstream.temp_file_write_size = 0; | |
657 | 547 conf->upstream.intercept_errors = 1; |
675 | 548 conf->upstream.intercept_404 = 1; |
581 | 549 conf->upstream.pass_request_headers = 0; |
550 conf->upstream.pass_request_body = 0; | |
551 | |
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552 conf->index = NGX_CONF_UNSET; |
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553 |
581 | 554 return conf; |
555 } | |
556 | |
557 | |
558 static char * | |
559 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
560 { | |
561 ngx_http_memcached_loc_conf_t *prev = parent; | |
562 ngx_http_memcached_loc_conf_t *conf = child; | |
563 | |
564 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
565 prev->upstream.connect_timeout, 60000); | |
566 | |
567 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
568 prev->upstream.send_timeout, 60000); | |
569 | |
570 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
571 prev->upstream.read_timeout, 60000); | |
572 | |
573 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
574 prev->upstream.buffer_size, | |
575 (size_t) ngx_pagesize); | |
576 | |
577 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
578 prev->upstream.next_upstream, | |
579 (NGX_CONF_BITMASK_SET | |
580 |NGX_HTTP_UPSTREAM_FT_ERROR | |
581 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
582 | |
665 | 583 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { |
584 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
585 |NGX_HTTP_UPSTREAM_FT_OFF; | |
586 } | |
587 | |
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588 if (conf->upstream.upstream == NULL) { |
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589 conf->upstream.upstream = prev->upstream.upstream; |
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590 } |
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591 |
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592 if (conf->index == NGX_CONF_UNSET) { |
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593 conf->index = prev->index; |
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594 } |
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595 |
581 | 596 return NGX_CONF_OK; |
597 } | |
598 | |
599 | |
600 static char * | |
601 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
602 { | |
2392 | 603 ngx_http_memcached_loc_conf_t *mlcf = conf; |
581 | 604 |
605 ngx_str_t *value; | |
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606 ngx_url_t u; |
581 | 607 ngx_http_core_loc_conf_t *clcf; |
608 | |
2392 | 609 if (mlcf->upstream.upstream) { |
581 | 610 return "is duplicate"; |
611 } | |
612 | |
613 value = cf->args->elts; | |
614 | |
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615 ngx_memzero(&u, sizeof(ngx_url_t)); |
581 | 616 |
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617 u.url = value[1]; |
884 | 618 u.no_resolve = 1; |
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619 |
2392 | 620 mlcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); |
621 if (mlcf->upstream.upstream == NULL) { | |
884 | 622 return NGX_CONF_ERROR; |
581 | 623 } |
624 | |
625 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
626 | |
627 clcf->handler = ngx_http_memcached_handler; | |
628 | |
629 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
630 clcf->auto_redirect = 1; | |
631 } | |
632 | |
2392 | 633 mlcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key); |
1076 | 634 |
2392 | 635 if (mlcf->index == NGX_ERROR) { |
1076 | 636 return NGX_CONF_ERROR; |
637 } | |
638 | |
581 | 639 return NGX_CONF_OK; |
640 } |