130
|
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;
|
278
|
14 ngx_int_t index;
|
130
|
15 } ngx_http_memcached_loc_conf_t;
|
|
16
|
|
17
|
|
18 typedef struct {
|
|
19 size_t rest;
|
|
20 ngx_http_request_t *request;
|
146
|
21 ngx_str_t key;
|
130
|
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
|
260
|
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
|
130
|
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 },
|
214
|
52 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
|
130
|
53 { ngx_null_string, 0 }
|
|
54 };
|
|
55
|
|
56
|
|
57 static ngx_command_t ngx_http_memcached_commands[] = {
|
|
58
|
|
59 { ngx_string("memcached_pass"),
|
358
|
60 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
|
130
|
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,
|
260
|
103 ngx_http_memcached_upstream_max_fails_unsupported,
|
|
104 0,
|
|
105 0,
|
130
|
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,
|
260
|
110 ngx_http_memcached_upstream_fail_timeout_unsupported,
|
|
111 0,
|
|
112 0,
|
130
|
113 NULL },
|
|
114
|
|
115 ngx_null_command
|
|
116 };
|
|
117
|
|
118
|
216
|
119 static ngx_http_module_t ngx_http_memcached_module_ctx = {
|
130
|
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
|
278
|
150 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key");
|
|
151
|
|
152
|
130
|
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
|
194
|
165 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
130
|
166 return NGX_HTTP_NOT_ALLOWED;
|
|
167 }
|
|
168
|
326
|
169 rc = ngx_http_discard_request_body(r);
|
130
|
170
|
326
|
171 if (rc != NGX_OK) {
|
130
|
172 return rc;
|
|
173 }
|
|
174
|
|
175 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
176 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
177 }
|
|
178
|
|
179 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
|
|
180
|
|
181 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
|
|
182 if (u == NULL) {
|
|
183 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
184 }
|
|
185
|
348
|
186 u->schema = mlcf->upstream.schema;
|
|
187
|
130
|
188 u->peer.log = r->connection->log;
|
|
189 u->peer.log_error = NGX_ERROR_ERR;
|
|
190 #if (NGX_THREADS)
|
|
191 u->peer.lock = &r->connection->lock;
|
|
192 #endif
|
|
193
|
|
194 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module;
|
|
195
|
|
196 u->conf = &mlcf->upstream;
|
|
197
|
|
198 u->create_request = ngx_http_memcached_create_request;
|
|
199 u->reinit_request = ngx_http_memcached_reinit_request;
|
|
200 u->process_header = ngx_http_memcached_process_header;
|
|
201 u->abort_request = ngx_http_memcached_abort_request;
|
|
202 u->finalize_request = ngx_http_memcached_finalize_request;
|
|
203
|
|
204 r->upstream = u;
|
|
205
|
|
206 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t));
|
|
207 if (ctx == NULL) {
|
|
208 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
209 }
|
|
210
|
|
211 ctx->rest = NGX_HTTP_MEMCACHED_END;
|
|
212 ctx->request = r;
|
|
213
|
146
|
214 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module);
|
|
215
|
130
|
216 u->input_filter_init = ngx_http_memcached_filter_init;
|
|
217 u->input_filter = ngx_http_memcached_filter;
|
|
218 u->input_filter_ctx = ctx;
|
|
219
|
|
220 ngx_http_upstream_init(r);
|
|
221
|
|
222 return NGX_DONE;
|
|
223 }
|
|
224
|
|
225
|
|
226 static ngx_int_t
|
|
227 ngx_http_memcached_create_request(ngx_http_request_t *r)
|
|
228 {
|
278
|
229 size_t len;
|
322
|
230 uintptr_t escape;
|
278
|
231 ngx_buf_t *b;
|
|
232 ngx_chain_t *cl;
|
|
233 ngx_http_memcached_ctx_t *ctx;
|
|
234 ngx_http_variable_value_t *vv;
|
|
235 ngx_http_memcached_loc_conf_t *mlcf;
|
|
236
|
|
237 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
|
130
|
238
|
278
|
239 vv = ngx_http_get_indexed_variable(r, mlcf->index);
|
|
240
|
|
241 if (vv == NULL || vv->not_found || vv->len == 0) {
|
|
242 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
243 "the \"$memcached_key\" variable is not set");
|
|
244 return NGX_ERROR;
|
|
245 }
|
|
246
|
322
|
247 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED);
|
|
248
|
|
249 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1;
|
130
|
250
|
|
251 b = ngx_create_temp_buf(r->pool, len);
|
|
252 if (b == NULL) {
|
|
253 return NGX_ERROR;
|
|
254 }
|
|
255
|
|
256 cl = ngx_alloc_chain_link(r->pool);
|
|
257 if (cl == NULL) {
|
|
258 return NGX_ERROR;
|
|
259 }
|
|
260
|
|
261 cl->buf = b;
|
|
262 cl->next = NULL;
|
|
263
|
|
264 r->upstream->request_bufs = cl;
|
|
265
|
|
266 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' ';
|
|
267
|
146
|
268 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
|
|
269
|
|
270 ctx->key.data = b->last;
|
|
271
|
322
|
272 if (escape == 0) {
|
|
273 b->last = ngx_copy(b->last, vv->data, vv->len);
|
|
274
|
|
275 } else {
|
|
276 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len,
|
|
277 NGX_ESCAPE_MEMCACHED);
|
|
278 }
|
130
|
279
|
146
|
280 ctx->key.len = b->last - ctx->key.data;
|
130
|
281
|
|
282 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
146
|
283 "http memcached request: \"%V\"", &ctx->key);
|
130
|
284
|
282
|
285 *b->last++ = CR; *b->last++ = LF;
|
130
|
286
|
|
287 return NGX_OK;
|
|
288 }
|
|
289
|
|
290
|
|
291 static ngx_int_t
|
|
292 ngx_http_memcached_reinit_request(ngx_http_request_t *r)
|
|
293 {
|
|
294 return NGX_OK;
|
|
295 }
|
|
296
|
|
297
|
|
298 static ngx_int_t
|
|
299 ngx_http_memcached_process_header(ngx_http_request_t *r)
|
|
300 {
|
146
|
301 u_char *p, *len;
|
|
302 ngx_str_t line;
|
|
303 ngx_http_upstream_t *u;
|
|
304 ngx_http_memcached_ctx_t *ctx;
|
130
|
305
|
|
306 u = r->upstream;
|
|
307
|
|
308 for (p = u->buffer.pos; p < u->buffer.last; p++) {
|
|
309 if (*p == LF) {
|
|
310 goto found;
|
|
311 }
|
|
312 }
|
|
313
|
|
314 return NGX_AGAIN;
|
|
315
|
|
316 found:
|
|
317
|
|
318 *p = '\0';
|
|
319
|
|
320 line.len = p - u->buffer.pos - 1;
|
|
321 line.data = u->buffer.pos;
|
|
322
|
|
323 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
324 "memcached: \"%V\"", &line);
|
|
325
|
|
326 p = u->buffer.pos;
|
|
327
|
146
|
328 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
|
|
329
|
130
|
330 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) {
|
|
331
|
|
332 p += sizeof("VALUE ") - 1;
|
|
333
|
146
|
334 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) {
|
130
|
335 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
336 "memcached sent invalid key in response \"%V\" "
|
|
337 "for key \"%V\"",
|
146
|
338 &line, &ctx->key);
|
130
|
339
|
|
340 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
341 }
|
|
342
|
146
|
343 p += ctx->key.len;
|
130
|
344
|
|
345 if (*p++ != ' ') {
|
|
346 goto no_valid;
|
|
347 }
|
|
348
|
|
349 /* skip flags */
|
|
350
|
|
351 while (*p) {
|
|
352 if (*p++ == ' ') {
|
|
353 goto length;
|
|
354 }
|
|
355 }
|
|
356
|
|
357 goto no_valid;
|
|
358
|
|
359 length:
|
|
360
|
|
361 len = p;
|
|
362
|
|
363 while (*p && *p++ != CR) { /* void */ }
|
|
364
|
|
365 r->headers_out.content_length_n = ngx_atoof(len, p - len - 1);
|
|
366 if (r->headers_out.content_length_n == -1) {
|
|
367 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
368 "memcached sent invalid length in response \"%V\" "
|
|
369 "for key \"%V\"",
|
146
|
370 &line, &ctx->key);
|
130
|
371 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
372 }
|
|
373
|
|
374 u->headers_in.status_n = 200;
|
340
|
375 u->state->status = 200;
|
130
|
376 u->buffer.pos = p + 1;
|
|
377
|
|
378 return NGX_OK;
|
|
379 }
|
|
380
|
|
381 if (ngx_strcmp(p, "END\x0d") == 0) {
|
|
382 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
146
|
383 "key: \"%V\" was not found by memcached", &ctx->key);
|
130
|
384
|
|
385 u->headers_in.status_n = 404;
|
340
|
386 u->state->status = 404;
|
130
|
387
|
|
388 return NGX_OK;
|
|
389 }
|
|
390
|
|
391 no_valid:
|
|
392
|
|
393 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
394 "memcached sent invalid response: \"%V\"", &line);
|
|
395
|
|
396 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
397 }
|
|
398
|
|
399
|
|
400 static ngx_int_t
|
|
401 ngx_http_memcached_filter_init(void *data)
|
|
402 {
|
|
403 ngx_http_memcached_ctx_t *ctx = data;
|
|
404
|
|
405 ngx_http_upstream_t *u;
|
|
406
|
|
407 u = ctx->request->upstream;
|
|
408
|
|
409 u->length += NGX_HTTP_MEMCACHED_END;
|
|
410
|
|
411 return NGX_OK;
|
|
412 }
|
|
413
|
|
414
|
|
415 static ngx_int_t
|
|
416 ngx_http_memcached_filter(void *data, ssize_t bytes)
|
|
417 {
|
|
418 ngx_http_memcached_ctx_t *ctx = data;
|
|
419
|
|
420 u_char *last;
|
|
421 ngx_buf_t *b;
|
|
422 ngx_chain_t *cl, **ll;
|
|
423 ngx_http_upstream_t *u;
|
|
424
|
|
425 u = ctx->request->upstream;
|
|
426 b = &u->buffer;
|
|
427
|
|
428 if (u->length == ctx->rest) {
|
|
429
|
|
430 if (ngx_strncmp(b->last,
|
340
|
431 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest,
|
|
432 ctx->rest)
|
|
433 != 0)
|
130
|
434 {
|
|
435 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
436 "memcached sent invalid trailer");
|
|
437 }
|
|
438
|
340
|
439 u->length = 0;
|
|
440 ctx->rest = 0;
|
130
|
441
|
|
442 return NGX_OK;
|
|
443 }
|
|
444
|
|
445 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
446 ll = &cl->next;
|
|
447 }
|
|
448
|
|
449 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs);
|
|
450 if (cl == NULL) {
|
|
451 return NGX_ERROR;
|
|
452 }
|
|
453
|
|
454 cl->buf->flush = 1;
|
|
455 cl->buf->memory = 1;
|
|
456
|
|
457 *ll = cl;
|
|
458
|
340
|
459 last = b->last;
|
|
460 cl->buf->pos = last;
|
130
|
461 b->last += bytes;
|
|
462 cl->buf->last = b->last;
|
366
|
463 cl->buf->tag = u->output.tag;
|
130
|
464
|
|
465 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
466 "memcached filter bytes:%z size:%z length:%z rest:%z",
|
|
467 bytes, b->last - b->pos, u->length, ctx->rest);
|
|
468
|
340
|
469 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) {
|
130
|
470 u->length -= bytes;
|
|
471 return NGX_OK;
|
|
472 }
|
|
473
|
340
|
474 last += u->length - NGX_HTTP_MEMCACHED_END;
|
130
|
475
|
|
476 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) {
|
|
477 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
478 "memcached sent invalid trailer");
|
|
479 }
|
|
480
|
340
|
481 ctx->rest -= b->last - last;
|
130
|
482 b->last = last;
|
|
483 cl->buf->last = last;
|
|
484 u->length = ctx->rest;
|
|
485
|
|
486 return NGX_OK;
|
|
487 }
|
|
488
|
|
489
|
|
490 static void
|
|
491 ngx_http_memcached_abort_request(ngx_http_request_t *r)
|
|
492 {
|
|
493 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
494 "abort http memcached request");
|
|
495 return;
|
|
496 }
|
|
497
|
|
498
|
|
499 static void
|
|
500 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
501 {
|
|
502 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
503 "finalize http memcached request");
|
|
504 return;
|
|
505 }
|
|
506
|
|
507
|
|
508 static void *
|
|
509 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf)
|
|
510 {
|
|
511 ngx_http_memcached_loc_conf_t *conf;
|
|
512
|
|
513 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t));
|
|
514 if (conf == NULL) {
|
|
515 return NGX_CONF_ERROR;
|
|
516 }
|
|
517
|
|
518 /*
|
|
519 * set by ngx_pcalloc():
|
|
520 *
|
|
521 * conf->upstream.bufs.num = 0;
|
|
522 * conf->upstream.next_upstream = 0;
|
|
523 * conf->upstream.temp_path = NULL;
|
|
524 * conf->upstream.schema = { 0, NULL };
|
|
525 * conf->upstream.uri = { 0, NULL };
|
|
526 * conf->upstream.location = NULL;
|
|
527 */
|
|
528
|
|
529 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
|
|
530 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
|
|
531 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
|
|
532
|
|
533 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE;
|
|
534
|
260
|
535 /* the hardcoded values */
|
130
|
536 conf->upstream.cyclic_temp_file = 0;
|
178
|
537 conf->upstream.buffering = 0;
|
|
538 conf->upstream.ignore_client_abort = 0;
|
130
|
539 conf->upstream.send_lowat = 0;
|
|
540 conf->upstream.bufs.num = 0;
|
|
541 conf->upstream.busy_buffers_size = 0;
|
|
542 conf->upstream.max_temp_file_size = 0;
|
|
543 conf->upstream.temp_file_write_size = 0;
|
206
|
544 conf->upstream.intercept_errors = 1;
|
224
|
545 conf->upstream.intercept_404 = 1;
|
130
|
546 conf->upstream.pass_request_headers = 0;
|
|
547 conf->upstream.pass_request_body = 0;
|
|
548
|
358
|
549 conf->index = NGX_CONF_UNSET;
|
|
550
|
130
|
551 return conf;
|
|
552 }
|
|
553
|
|
554
|
|
555 static char *
|
|
556 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
557 {
|
|
558 ngx_http_memcached_loc_conf_t *prev = parent;
|
|
559 ngx_http_memcached_loc_conf_t *conf = child;
|
|
560
|
|
561 ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
|
|
562 prev->upstream.connect_timeout, 60000);
|
|
563
|
|
564 ngx_conf_merge_msec_value(conf->upstream.send_timeout,
|
|
565 prev->upstream.send_timeout, 60000);
|
|
566
|
|
567 ngx_conf_merge_msec_value(conf->upstream.read_timeout,
|
|
568 prev->upstream.read_timeout, 60000);
|
|
569
|
|
570 ngx_conf_merge_size_value(conf->upstream.buffer_size,
|
|
571 prev->upstream.buffer_size,
|
|
572 (size_t) ngx_pagesize);
|
|
573
|
|
574 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
|
|
575 prev->upstream.next_upstream,
|
|
576 (NGX_CONF_BITMASK_SET
|
|
577 |NGX_HTTP_UPSTREAM_FT_ERROR
|
|
578 |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
|
|
579
|
214
|
580 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
|
|
581 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
|
|
582 |NGX_HTTP_UPSTREAM_FT_OFF;
|
|
583 }
|
|
584
|
358
|
585 if (conf->upstream.upstream == NULL) {
|
|
586 conf->upstream.upstream = prev->upstream.upstream;
|
|
587 conf->upstream.schema = prev->upstream.schema;
|
|
588 }
|
|
589
|
|
590 if (conf->index == NGX_CONF_UNSET) {
|
|
591 conf->index = prev->index;
|
|
592 }
|
|
593
|
130
|
594 return NGX_CONF_OK;
|
|
595 }
|
|
596
|
|
597
|
|
598 static char *
|
|
599 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
600 {
|
|
601 ngx_http_memcached_loc_conf_t *lcf = conf;
|
|
602
|
|
603 ngx_str_t *value;
|
252
|
604 ngx_url_t u;
|
130
|
605 ngx_http_core_loc_conf_t *clcf;
|
|
606
|
|
607 if (lcf->upstream.schema.len) {
|
|
608 return "is duplicate";
|
|
609 }
|
|
610
|
|
611 value = cf->args->elts;
|
|
612
|
252
|
613 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
614
|
|
615 u.url = value[1];
|
260
|
616 u.no_resolve = 1;
|
130
|
617
|
260
|
618 lcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
|
|
619 if (lcf->upstream.upstream == NULL) {
|
|
620 return NGX_CONF_ERROR;
|
130
|
621 }
|
|
622
|
|
623 lcf->upstream.schema.len = sizeof("memcached://") - 1;
|
|
624 lcf->upstream.schema.data = (u_char *) "memcached://";
|
|
625
|
|
626 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
627
|
|
628 clcf->handler = ngx_http_memcached_handler;
|
|
629
|
|
630 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
631 clcf->auto_redirect = 1;
|
|
632 }
|
|
633
|
278
|
634 lcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key);
|
|
635
|
|
636 if (lcf->index == NGX_ERROR) {
|
|
637 return NGX_CONF_ERROR;
|
|
638 }
|
|
639
|
130
|
640 return NGX_CONF_OK;
|
|
641 }
|
260
|
642
|
|
643
|
|
644 static char *
|
|
645 ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf,
|
|
646 ngx_command_t *cmd, void *conf)
|
|
647 {
|
|
648 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
649 "\"memcached_upstream_max_fails\" is not supported, "
|
|
650 "use the \"max_fails\" parameter of the \"server\" directive ",
|
|
651 "inside the \"upstream\" block");
|
|
652
|
|
653 return NGX_CONF_ERROR;
|
|
654 }
|
|
655
|
|
656
|
|
657 static char *
|
|
658 ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf,
|
|
659 ngx_command_t *cmd, void *conf)
|
|
660 {
|
|
661 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
662 "\"memcached_upstream_fail_timeout\" is not supported, "
|
|
663 "use the \"fail_timeout\" parameter of the \"server\" directive ",
|
|
664 "inside the \"upstream\" block");
|
|
665
|
|
666 return NGX_CONF_ERROR;
|
|
667 }
|