|
130
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
660
|
4 * Copyright (C) Nginx, Inc.
|
|
130
|
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;
|
|
278
|
15 ngx_int_t index;
|
|
686
|
16 ngx_uint_t gzip_flag;
|
|
130
|
17 } ngx_http_memcached_loc_conf_t;
|
|
|
18
|
|
|
19
|
|
|
20 typedef struct {
|
|
|
21 size_t rest;
|
|
|
22 ngx_http_request_t *request;
|
|
146
|
23 ngx_str_t key;
|
|
130
|
24 } ngx_http_memcached_ctx_t;
|
|
|
25
|
|
|
26
|
|
|
27 static ngx_int_t ngx_http_memcached_create_request(ngx_http_request_t *r);
|
|
|
28 static ngx_int_t ngx_http_memcached_reinit_request(ngx_http_request_t *r);
|
|
|
29 static ngx_int_t ngx_http_memcached_process_header(ngx_http_request_t *r);
|
|
|
30 static ngx_int_t ngx_http_memcached_filter_init(void *data);
|
|
|
31 static ngx_int_t ngx_http_memcached_filter(void *data, ssize_t bytes);
|
|
|
32 static void ngx_http_memcached_abort_request(ngx_http_request_t *r);
|
|
|
33 static void ngx_http_memcached_finalize_request(ngx_http_request_t *r,
|
|
|
34 ngx_int_t rc);
|
|
|
35
|
|
|
36 static void *ngx_http_memcached_create_loc_conf(ngx_conf_t *cf);
|
|
|
37 static char *ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf,
|
|
|
38 void *parent, void *child);
|
|
|
39
|
|
|
40 static char *ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
|
41 void *conf);
|
|
|
42
|
|
|
43
|
|
|
44 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = {
|
|
|
45 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
|
|
|
46 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
|
|
|
47 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
|
|
|
48 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
214
|
49 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
|
|
130
|
50 { ngx_null_string, 0 }
|
|
|
51 };
|
|
|
52
|
|
|
53
|
|
|
54 static ngx_command_t ngx_http_memcached_commands[] = {
|
|
|
55
|
|
|
56 { ngx_string("memcached_pass"),
|
|
358
|
57 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
|
|
130
|
58 ngx_http_memcached_pass,
|
|
|
59 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
60 0,
|
|
|
61 NULL },
|
|
|
62
|
|
540
|
63 { ngx_string("memcached_bind"),
|
|
|
64 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
558
|
65 ngx_http_upstream_bind_set_slot,
|
|
540
|
66 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
67 offsetof(ngx_http_memcached_loc_conf_t, upstream.local),
|
|
|
68 NULL },
|
|
|
69
|
|
130
|
70 { ngx_string("memcached_connect_timeout"),
|
|
|
71 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
72 ngx_conf_set_msec_slot,
|
|
|
73 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
74 offsetof(ngx_http_memcached_loc_conf_t, upstream.connect_timeout),
|
|
|
75 NULL },
|
|
|
76
|
|
|
77 { ngx_string("memcached_send_timeout"),
|
|
|
78 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
79 ngx_conf_set_msec_slot,
|
|
|
80 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
81 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout),
|
|
|
82 NULL },
|
|
|
83
|
|
|
84 { ngx_string("memcached_buffer_size"),
|
|
|
85 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
86 ngx_conf_set_size_slot,
|
|
|
87 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
88 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size),
|
|
|
89 NULL },
|
|
|
90
|
|
|
91 { ngx_string("memcached_read_timeout"),
|
|
|
92 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
93 ngx_conf_set_msec_slot,
|
|
|
94 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
95 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout),
|
|
|
96 NULL },
|
|
|
97
|
|
|
98 { ngx_string("memcached_next_upstream"),
|
|
|
99 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
|
|
|
100 ngx_conf_set_bitmask_slot,
|
|
|
101 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
102 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream),
|
|
|
103 &ngx_http_memcached_next_upstream_masks },
|
|
|
104
|
|
686
|
105 { ngx_string("memcached_gzip_flag"),
|
|
|
106 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
|
|
|
107 ngx_conf_set_num_slot,
|
|
|
108 NGX_HTTP_LOC_CONF_OFFSET,
|
|
|
109 offsetof(ngx_http_memcached_loc_conf_t, gzip_flag),
|
|
|
110 NULL },
|
|
|
111
|
|
130
|
112 ngx_null_command
|
|
|
113 };
|
|
|
114
|
|
|
115
|
|
216
|
116 static ngx_http_module_t ngx_http_memcached_module_ctx = {
|
|
130
|
117 NULL, /* preconfiguration */
|
|
|
118 NULL, /* postconfiguration */
|
|
|
119
|
|
|
120 NULL, /* create main configuration */
|
|
|
121 NULL, /* init main configuration */
|
|
|
122
|
|
|
123 NULL, /* create server configuration */
|
|
|
124 NULL, /* merge server configuration */
|
|
|
125
|
|
664
|
126 ngx_http_memcached_create_loc_conf, /* create location configuration */
|
|
|
127 ngx_http_memcached_merge_loc_conf /* merge location configuration */
|
|
130
|
128 };
|
|
|
129
|
|
|
130
|
|
|
131 ngx_module_t ngx_http_memcached_module = {
|
|
|
132 NGX_MODULE_V1,
|
|
|
133 &ngx_http_memcached_module_ctx, /* module context */
|
|
|
134 ngx_http_memcached_commands, /* module directives */
|
|
|
135 NGX_HTTP_MODULE, /* module type */
|
|
|
136 NULL, /* init master */
|
|
|
137 NULL, /* init module */
|
|
|
138 NULL, /* init process */
|
|
|
139 NULL, /* init thread */
|
|
|
140 NULL, /* exit thread */
|
|
|
141 NULL, /* exit process */
|
|
|
142 NULL, /* exit master */
|
|
|
143 NGX_MODULE_V1_PADDING
|
|
|
144 };
|
|
|
145
|
|
|
146
|
|
278
|
147 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key");
|
|
|
148
|
|
|
149
|
|
130
|
150 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1)
|
|
|
151 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF;
|
|
|
152
|
|
|
153
|
|
|
154 static ngx_int_t
|
|
|
155 ngx_http_memcached_handler(ngx_http_request_t *r)
|
|
|
156 {
|
|
|
157 ngx_int_t rc;
|
|
|
158 ngx_http_upstream_t *u;
|
|
|
159 ngx_http_memcached_ctx_t *ctx;
|
|
|
160 ngx_http_memcached_loc_conf_t *mlcf;
|
|
|
161
|
|
194
|
162 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
|
130
|
163 return NGX_HTTP_NOT_ALLOWED;
|
|
|
164 }
|
|
|
165
|
|
326
|
166 rc = ngx_http_discard_request_body(r);
|
|
130
|
167
|
|
326
|
168 if (rc != NGX_OK) {
|
|
130
|
169 return rc;
|
|
|
170 }
|
|
|
171
|
|
|
172 if (ngx_http_set_content_type(r) != NGX_OK) {
|
|
|
173 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
174 }
|
|
|
175
|
|
510
|
176 if (ngx_http_upstream_create(r) != NGX_OK) {
|
|
130
|
177 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
178 }
|
|
|
179
|
|
510
|
180 u = r->upstream;
|
|
|
181
|
|
570
|
182 ngx_str_set(&u->schema, "memcached://");
|
|
510
|
183 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module;
|
|
130
|
184
|
|
510
|
185 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
|
|
130
|
186
|
|
|
187 u->conf = &mlcf->upstream;
|
|
|
188
|
|
|
189 u->create_request = ngx_http_memcached_create_request;
|
|
|
190 u->reinit_request = ngx_http_memcached_reinit_request;
|
|
|
191 u->process_header = ngx_http_memcached_process_header;
|
|
|
192 u->abort_request = ngx_http_memcached_abort_request;
|
|
|
193 u->finalize_request = ngx_http_memcached_finalize_request;
|
|
|
194
|
|
|
195 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t));
|
|
|
196 if (ctx == NULL) {
|
|
|
197 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
198 }
|
|
|
199
|
|
|
200 ctx->rest = NGX_HTTP_MEMCACHED_END;
|
|
|
201 ctx->request = r;
|
|
|
202
|
|
146
|
203 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module);
|
|
|
204
|
|
130
|
205 u->input_filter_init = ngx_http_memcached_filter_init;
|
|
|
206 u->input_filter = ngx_http_memcached_filter;
|
|
|
207 u->input_filter_ctx = ctx;
|
|
|
208
|
|
520
|
209 r->main->count++;
|
|
|
210
|
|
130
|
211 ngx_http_upstream_init(r);
|
|
|
212
|
|
|
213 return NGX_DONE;
|
|
|
214 }
|
|
|
215
|
|
|
216
|
|
|
217 static ngx_int_t
|
|
|
218 ngx_http_memcached_create_request(ngx_http_request_t *r)
|
|
|
219 {
|
|
278
|
220 size_t len;
|
|
322
|
221 uintptr_t escape;
|
|
278
|
222 ngx_buf_t *b;
|
|
|
223 ngx_chain_t *cl;
|
|
|
224 ngx_http_memcached_ctx_t *ctx;
|
|
|
225 ngx_http_variable_value_t *vv;
|
|
|
226 ngx_http_memcached_loc_conf_t *mlcf;
|
|
|
227
|
|
|
228 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
|
|
130
|
229
|
|
278
|
230 vv = ngx_http_get_indexed_variable(r, mlcf->index);
|
|
|
231
|
|
|
232 if (vv == NULL || vv->not_found || vv->len == 0) {
|
|
|
233 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
234 "the \"$memcached_key\" variable is not set");
|
|
|
235 return NGX_ERROR;
|
|
|
236 }
|
|
|
237
|
|
322
|
238 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED);
|
|
|
239
|
|
|
240 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1;
|
|
130
|
241
|
|
|
242 b = ngx_create_temp_buf(r->pool, len);
|
|
|
243 if (b == NULL) {
|
|
|
244 return NGX_ERROR;
|
|
|
245 }
|
|
|
246
|
|
|
247 cl = ngx_alloc_chain_link(r->pool);
|
|
|
248 if (cl == NULL) {
|
|
|
249 return NGX_ERROR;
|
|
|
250 }
|
|
|
251
|
|
|
252 cl->buf = b;
|
|
|
253 cl->next = NULL;
|
|
|
254
|
|
|
255 r->upstream->request_bufs = cl;
|
|
|
256
|
|
|
257 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' ';
|
|
|
258
|
|
146
|
259 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
|
|
|
260
|
|
|
261 ctx->key.data = b->last;
|
|
|
262
|
|
322
|
263 if (escape == 0) {
|
|
|
264 b->last = ngx_copy(b->last, vv->data, vv->len);
|
|
|
265
|
|
|
266 } else {
|
|
|
267 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len,
|
|
|
268 NGX_ESCAPE_MEMCACHED);
|
|
|
269 }
|
|
130
|
270
|
|
146
|
271 ctx->key.len = b->last - ctx->key.data;
|
|
130
|
272
|
|
|
273 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
146
|
274 "http memcached request: \"%V\"", &ctx->key);
|
|
130
|
275
|
|
282
|
276 *b->last++ = CR; *b->last++ = LF;
|
|
130
|
277
|
|
|
278 return NGX_OK;
|
|
|
279 }
|
|
|
280
|
|
|
281
|
|
|
282 static ngx_int_t
|
|
|
283 ngx_http_memcached_reinit_request(ngx_http_request_t *r)
|
|
|
284 {
|
|
|
285 return NGX_OK;
|
|
|
286 }
|
|
|
287
|
|
|
288
|
|
|
289 static ngx_int_t
|
|
|
290 ngx_http_memcached_process_header(ngx_http_request_t *r)
|
|
|
291 {
|
|
686
|
292 u_char *p, *start;
|
|
|
293 ngx_str_t line;
|
|
|
294 ngx_uint_t flags;
|
|
|
295 ngx_table_elt_t *h;
|
|
|
296 ngx_http_upstream_t *u;
|
|
|
297 ngx_http_memcached_ctx_t *ctx;
|
|
|
298 ngx_http_memcached_loc_conf_t *mlcf;
|
|
130
|
299
|
|
|
300 u = r->upstream;
|
|
|
301
|
|
|
302 for (p = u->buffer.pos; p < u->buffer.last; p++) {
|
|
|
303 if (*p == LF) {
|
|
|
304 goto found;
|
|
|
305 }
|
|
|
306 }
|
|
|
307
|
|
|
308 return NGX_AGAIN;
|
|
|
309
|
|
|
310 found:
|
|
|
311
|
|
|
312 *p = '\0';
|
|
|
313
|
|
|
314 line.len = p - u->buffer.pos - 1;
|
|
|
315 line.data = u->buffer.pos;
|
|
|
316
|
|
|
317 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
318 "memcached: \"%V\"", &line);
|
|
|
319
|
|
|
320 p = u->buffer.pos;
|
|
|
321
|
|
146
|
322 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
|
|
686
|
323 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
|
|
146
|
324
|
|
130
|
325 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) {
|
|
|
326
|
|
|
327 p += sizeof("VALUE ") - 1;
|
|
|
328
|
|
146
|
329 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) {
|
|
130
|
330 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
331 "memcached sent invalid key in response \"%V\" "
|
|
|
332 "for key \"%V\"",
|
|
146
|
333 &line, &ctx->key);
|
|
130
|
334
|
|
|
335 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
|
336 }
|
|
|
337
|
|
146
|
338 p += ctx->key.len;
|
|
130
|
339
|
|
|
340 if (*p++ != ' ') {
|
|
|
341 goto no_valid;
|
|
|
342 }
|
|
|
343
|
|
686
|
344 /* flags */
|
|
|
345
|
|
|
346 start = p;
|
|
130
|
347
|
|
|
348 while (*p) {
|
|
|
349 if (*p++ == ' ') {
|
|
686
|
350 if (mlcf->gzip_flag) {
|
|
|
351 goto flags;
|
|
|
352 } else {
|
|
|
353 goto length;
|
|
|
354 }
|
|
130
|
355 }
|
|
|
356 }
|
|
|
357
|
|
|
358 goto no_valid;
|
|
|
359
|
|
686
|
360 flags:
|
|
|
361
|
|
|
362 flags = ngx_atoi(start, p - start - 1);
|
|
|
363
|
|
|
364 if (flags == (ngx_uint_t) NGX_ERROR) {
|
|
|
365 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
366 "memcached sent invalid flags in response \"%V\" "
|
|
|
367 "for key \"%V\"",
|
|
|
368 &line, &ctx->key);
|
|
|
369 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
|
370 }
|
|
|
371
|
|
|
372 if (flags & mlcf->gzip_flag) {
|
|
|
373 h = ngx_list_push(&r->headers_out.headers);
|
|
|
374 if (h == NULL) {
|
|
|
375 return NGX_ERROR;
|
|
|
376 }
|
|
|
377
|
|
|
378 h->hash = 1;
|
|
|
379 h->key.len = sizeof("Content-Encoding") - 1;
|
|
|
380 h->key.data = (u_char *) "Content-Encoding";
|
|
|
381 h->value.len = sizeof("gzip") - 1;
|
|
|
382 h->value.data = (u_char *) "gzip";
|
|
|
383
|
|
|
384 r->headers_out.content_encoding = h;
|
|
|
385 }
|
|
|
386
|
|
130
|
387 length:
|
|
|
388
|
|
686
|
389 start = p;
|
|
130
|
390
|
|
|
391 while (*p && *p++ != CR) { /* void */ }
|
|
|
392
|
|
686
|
393 u->headers_in.content_length_n = ngx_atoof(start, p - start - 1);
|
|
640
|
394 if (u->headers_in.content_length_n == -1) {
|
|
130
|
395 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
396 "memcached sent invalid length in response \"%V\" "
|
|
|
397 "for key \"%V\"",
|
|
146
|
398 &line, &ctx->key);
|
|
130
|
399 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
|
400 }
|
|
|
401
|
|
|
402 u->headers_in.status_n = 200;
|
|
340
|
403 u->state->status = 200;
|
|
130
|
404 u->buffer.pos = p + 1;
|
|
|
405
|
|
|
406 return NGX_OK;
|
|
|
407 }
|
|
|
408
|
|
|
409 if (ngx_strcmp(p, "END\x0d") == 0) {
|
|
|
410 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
146
|
411 "key: \"%V\" was not found by memcached", &ctx->key);
|
|
130
|
412
|
|
|
413 u->headers_in.status_n = 404;
|
|
340
|
414 u->state->status = 404;
|
|
640
|
415 u->keepalive = 1;
|
|
130
|
416
|
|
|
417 return NGX_OK;
|
|
|
418 }
|
|
|
419
|
|
|
420 no_valid:
|
|
|
421
|
|
|
422 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
423 "memcached sent invalid response: \"%V\"", &line);
|
|
|
424
|
|
|
425 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
|
426 }
|
|
|
427
|
|
|
428
|
|
|
429 static ngx_int_t
|
|
|
430 ngx_http_memcached_filter_init(void *data)
|
|
|
431 {
|
|
|
432 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
433
|
|
|
434 ngx_http_upstream_t *u;
|
|
|
435
|
|
|
436 u = ctx->request->upstream;
|
|
|
437
|
|
|
438 u->length += NGX_HTTP_MEMCACHED_END;
|
|
|
439
|
|
|
440 return NGX_OK;
|
|
|
441 }
|
|
|
442
|
|
|
443
|
|
|
444 static ngx_int_t
|
|
|
445 ngx_http_memcached_filter(void *data, ssize_t bytes)
|
|
|
446 {
|
|
|
447 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
448
|
|
|
449 u_char *last;
|
|
|
450 ngx_buf_t *b;
|
|
|
451 ngx_chain_t *cl, **ll;
|
|
|
452 ngx_http_upstream_t *u;
|
|
|
453
|
|
|
454 u = ctx->request->upstream;
|
|
|
455 b = &u->buffer;
|
|
|
456
|
|
640
|
457 if (u->length == (ssize_t) ctx->rest) {
|
|
130
|
458
|
|
|
459 if (ngx_strncmp(b->last,
|
|
340
|
460 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest,
|
|
566
|
461 bytes)
|
|
340
|
462 != 0)
|
|
130
|
463 {
|
|
|
464 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
465 "memcached sent invalid trailer");
|
|
566
|
466
|
|
|
467 u->length = 0;
|
|
|
468 ctx->rest = 0;
|
|
|
469
|
|
|
470 return NGX_OK;
|
|
130
|
471 }
|
|
|
472
|
|
566
|
473 u->length -= bytes;
|
|
|
474 ctx->rest -= bytes;
|
|
130
|
475
|
|
640
|
476 if (u->length == 0) {
|
|
|
477 u->keepalive = 1;
|
|
|
478 }
|
|
|
479
|
|
130
|
480 return NGX_OK;
|
|
|
481 }
|
|
|
482
|
|
|
483 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
484 ll = &cl->next;
|
|
|
485 }
|
|
|
486
|
|
|
487 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs);
|
|
|
488 if (cl == NULL) {
|
|
|
489 return NGX_ERROR;
|
|
|
490 }
|
|
|
491
|
|
|
492 cl->buf->flush = 1;
|
|
|
493 cl->buf->memory = 1;
|
|
|
494
|
|
|
495 *ll = cl;
|
|
|
496
|
|
340
|
497 last = b->last;
|
|
|
498 cl->buf->pos = last;
|
|
130
|
499 b->last += bytes;
|
|
|
500 cl->buf->last = b->last;
|
|
366
|
501 cl->buf->tag = u->output.tag;
|
|
130
|
502
|
|
|
503 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
|
504 "memcached filter bytes:%z size:%z length:%z rest:%z",
|
|
|
505 bytes, b->last - b->pos, u->length, ctx->rest);
|
|
|
506
|
|
340
|
507 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) {
|
|
130
|
508 u->length -= bytes;
|
|
|
509 return NGX_OK;
|
|
|
510 }
|
|
|
511
|
|
340
|
512 last += u->length - NGX_HTTP_MEMCACHED_END;
|
|
130
|
513
|
|
|
514 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) {
|
|
|
515 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
516 "memcached sent invalid trailer");
|
|
640
|
517
|
|
|
518 b->last = last;
|
|
|
519 cl->buf->last = last;
|
|
|
520 u->length = 0;
|
|
|
521 ctx->rest = 0;
|
|
|
522
|
|
|
523 return NGX_OK;
|
|
130
|
524 }
|
|
|
525
|
|
340
|
526 ctx->rest -= b->last - last;
|
|
130
|
527 b->last = last;
|
|
|
528 cl->buf->last = last;
|
|
|
529 u->length = ctx->rest;
|
|
|
530
|
|
640
|
531 if (u->length == 0) {
|
|
|
532 u->keepalive = 1;
|
|
|
533 }
|
|
|
534
|
|
130
|
535 return NGX_OK;
|
|
|
536 }
|
|
|
537
|
|
|
538
|
|
|
539 static void
|
|
|
540 ngx_http_memcached_abort_request(ngx_http_request_t *r)
|
|
|
541 {
|
|
|
542 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
543 "abort http memcached request");
|
|
|
544 return;
|
|
|
545 }
|
|
|
546
|
|
|
547
|
|
|
548 static void
|
|
|
549 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
|
550 {
|
|
|
551 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
552 "finalize http memcached request");
|
|
|
553 return;
|
|
|
554 }
|
|
|
555
|
|
|
556
|
|
|
557 static void *
|
|
|
558 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf)
|
|
|
559 {
|
|
|
560 ngx_http_memcached_loc_conf_t *conf;
|
|
|
561
|
|
|
562 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t));
|
|
|
563 if (conf == NULL) {
|
|
496
|
564 return NULL;
|
|
130
|
565 }
|
|
|
566
|
|
|
567 /*
|
|
|
568 * set by ngx_pcalloc():
|
|
|
569 *
|
|
|
570 * conf->upstream.bufs.num = 0;
|
|
|
571 * conf->upstream.next_upstream = 0;
|
|
|
572 * conf->upstream.temp_path = NULL;
|
|
|
573 * conf->upstream.uri = { 0, NULL };
|
|
|
574 * conf->upstream.location = NULL;
|
|
|
575 */
|
|
|
576
|
|
|
577 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
578 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
579 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
580
|
|
|
581 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
582
|
|
260
|
583 /* the hardcoded values */
|
|
130
|
584 conf->upstream.cyclic_temp_file = 0;
|
|
178
|
585 conf->upstream.buffering = 0;
|
|
|
586 conf->upstream.ignore_client_abort = 0;
|
|
130
|
587 conf->upstream.send_lowat = 0;
|
|
|
588 conf->upstream.bufs.num = 0;
|
|
|
589 conf->upstream.busy_buffers_size = 0;
|
|
|
590 conf->upstream.max_temp_file_size = 0;
|
|
|
591 conf->upstream.temp_file_write_size = 0;
|
|
206
|
592 conf->upstream.intercept_errors = 1;
|
|
224
|
593 conf->upstream.intercept_404 = 1;
|
|
130
|
594 conf->upstream.pass_request_headers = 0;
|
|
|
595 conf->upstream.pass_request_body = 0;
|
|
|
596
|
|
358
|
597 conf->index = NGX_CONF_UNSET;
|
|
686
|
598 conf->gzip_flag = NGX_CONF_UNSET_UINT;
|
|
358
|
599
|
|
130
|
600 return conf;
|
|
|
601 }
|
|
|
602
|
|
|
603
|
|
|
604 static char *
|
|
|
605 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
606 {
|
|
|
607 ngx_http_memcached_loc_conf_t *prev = parent;
|
|
|
608 ngx_http_memcached_loc_conf_t *conf = child;
|
|
|
609
|
|
|
610 ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
|
|
|
611 prev->upstream.connect_timeout, 60000);
|
|
|
612
|
|
|
613 ngx_conf_merge_msec_value(conf->upstream.send_timeout,
|
|
|
614 prev->upstream.send_timeout, 60000);
|
|
|
615
|
|
|
616 ngx_conf_merge_msec_value(conf->upstream.read_timeout,
|
|
|
617 prev->upstream.read_timeout, 60000);
|
|
|
618
|
|
|
619 ngx_conf_merge_size_value(conf->upstream.buffer_size,
|
|
|
620 prev->upstream.buffer_size,
|
|
|
621 (size_t) ngx_pagesize);
|
|
|
622
|
|
|
623 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
|
|
|
624 prev->upstream.next_upstream,
|
|
|
625 (NGX_CONF_BITMASK_SET
|
|
|
626 |NGX_HTTP_UPSTREAM_FT_ERROR
|
|
|
627 |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
|
|
|
628
|
|
214
|
629 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
|
|
|
630 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
|
|
|
631 |NGX_HTTP_UPSTREAM_FT_OFF;
|
|
|
632 }
|
|
|
633
|
|
358
|
634 if (conf->upstream.upstream == NULL) {
|
|
|
635 conf->upstream.upstream = prev->upstream.upstream;
|
|
|
636 }
|
|
|
637
|
|
|
638 if (conf->index == NGX_CONF_UNSET) {
|
|
|
639 conf->index = prev->index;
|
|
|
640 }
|
|
|
641
|
|
686
|
642 ngx_conf_merge_uint_value(conf->gzip_flag, prev->gzip_flag, 0);
|
|
|
643
|
|
130
|
644 return NGX_CONF_OK;
|
|
|
645 }
|
|
|
646
|
|
|
647
|
|
|
648 static char *
|
|
|
649 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
650 {
|
|
430
|
651 ngx_http_memcached_loc_conf_t *mlcf = conf;
|
|
130
|
652
|
|
|
653 ngx_str_t *value;
|
|
252
|
654 ngx_url_t u;
|
|
130
|
655 ngx_http_core_loc_conf_t *clcf;
|
|
|
656
|
|
430
|
657 if (mlcf->upstream.upstream) {
|
|
130
|
658 return "is duplicate";
|
|
|
659 }
|
|
|
660
|
|
|
661 value = cf->args->elts;
|
|
|
662
|
|
252
|
663 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
664
|
|
|
665 u.url = value[1];
|
|
260
|
666 u.no_resolve = 1;
|
|
130
|
667
|
|
430
|
668 mlcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
|
|
|
669 if (mlcf->upstream.upstream == NULL) {
|
|
260
|
670 return NGX_CONF_ERROR;
|
|
130
|
671 }
|
|
|
672
|
|
|
673 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
674
|
|
|
675 clcf->handler = ngx_http_memcached_handler;
|
|
|
676
|
|
|
677 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
|
678 clcf->auto_redirect = 1;
|
|
|
679 }
|
|
|
680
|
|
430
|
681 mlcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key);
|
|
278
|
682
|
|
430
|
683 if (mlcf->index == NGX_ERROR) {
|
|
278
|
684 return NGX_CONF_ERROR;
|
|
|
685 }
|
|
|
686
|
|
130
|
687 return NGX_CONF_OK;
|
|
|
688 }
|
