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