Mercurial > hg > nginx
annotate src/http/modules/ngx_http_memcached_module.c @ 3516:dd1570b6f237
ngx_str_set() and ngx_str_null()
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Fri, 14 May 2010 09:56:37 +0000 |
| parents | 5d2acf153153 |
| children | 66a244ee8cf7 |
| 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 | |
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66 { ngx_string("memcached_bind"), |
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67 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, |
| 3399 | 68 ngx_http_upstream_bind_set_slot, |
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69 NGX_HTTP_LOC_CONF_OFFSET, |
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70 offsetof(ngx_http_memcached_loc_conf_t, upstream.local), |
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71 NULL }, |
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72 |
| 581 | 73 { ngx_string("memcached_connect_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.connect_timeout), | |
| 78 NULL }, | |
| 79 | |
| 80 { ngx_string("memcached_send_timeout"), | |
| 81 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 82 ngx_conf_set_msec_slot, | |
| 83 NGX_HTTP_LOC_CONF_OFFSET, | |
| 84 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout), | |
| 85 NULL }, | |
| 86 | |
| 87 { ngx_string("memcached_buffer_size"), | |
| 88 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 89 ngx_conf_set_size_slot, | |
| 90 NGX_HTTP_LOC_CONF_OFFSET, | |
| 91 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size), | |
| 92 NULL }, | |
| 93 | |
| 94 { ngx_string("memcached_read_timeout"), | |
| 95 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 96 ngx_conf_set_msec_slot, | |
| 97 NGX_HTTP_LOC_CONF_OFFSET, | |
| 98 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout), | |
| 99 NULL }, | |
| 100 | |
| 101 { ngx_string("memcached_next_upstream"), | |
| 102 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 103 ngx_conf_set_bitmask_slot, | |
| 104 NGX_HTTP_LOC_CONF_OFFSET, | |
| 105 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream), | |
| 106 &ngx_http_memcached_next_upstream_masks }, | |
| 107 | |
| 108 { ngx_string("memcached_upstream_max_fails"), | |
| 109 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 884 | 110 ngx_http_memcached_upstream_max_fails_unsupported, |
| 111 0, | |
| 112 0, | |
| 581 | 113 NULL }, |
| 114 | |
| 115 { ngx_string("memcached_upstream_fail_timeout"), | |
| 116 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 884 | 117 ngx_http_memcached_upstream_fail_timeout_unsupported, |
| 118 0, | |
| 119 0, | |
| 581 | 120 NULL }, |
| 121 | |
| 122 ngx_null_command | |
| 123 }; | |
| 124 | |
| 125 | |
| 667 | 126 static ngx_http_module_t ngx_http_memcached_module_ctx = { |
| 581 | 127 NULL, /* preconfiguration */ |
| 128 NULL, /* postconfiguration */ | |
| 129 | |
| 130 NULL, /* create main configuration */ | |
| 131 NULL, /* init main configuration */ | |
| 132 | |
| 133 NULL, /* create server configuration */ | |
| 134 NULL, /* merge server configuration */ | |
| 135 | |
| 136 ngx_http_memcached_create_loc_conf, /* create location configration */ | |
| 137 ngx_http_memcached_merge_loc_conf /* merge location configration */ | |
| 138 }; | |
| 139 | |
| 140 | |
| 141 ngx_module_t ngx_http_memcached_module = { | |
| 142 NGX_MODULE_V1, | |
| 143 &ngx_http_memcached_module_ctx, /* module context */ | |
| 144 ngx_http_memcached_commands, /* module directives */ | |
| 145 NGX_HTTP_MODULE, /* module type */ | |
| 146 NULL, /* init master */ | |
| 147 NULL, /* init module */ | |
| 148 NULL, /* init process */ | |
| 149 NULL, /* init thread */ | |
| 150 NULL, /* exit thread */ | |
| 151 NULL, /* exit process */ | |
| 152 NULL, /* exit master */ | |
| 153 NGX_MODULE_V1_PADDING | |
| 154 }; | |
| 155 | |
| 156 | |
| 1076 | 157 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key"); |
| 158 | |
| 159 | |
| 581 | 160 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1) |
| 161 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF; | |
| 162 | |
| 163 | |
| 164 static ngx_int_t | |
| 165 ngx_http_memcached_handler(ngx_http_request_t *r) | |
| 166 { | |
| 167 ngx_int_t rc; | |
| 168 ngx_http_upstream_t *u; | |
| 169 ngx_http_memcached_ctx_t *ctx; | |
| 170 ngx_http_memcached_loc_conf_t *mlcf; | |
| 171 | |
| 645 | 172 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) { |
| 581 | 173 return NGX_HTTP_NOT_ALLOWED; |
| 174 } | |
| 175 | |
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176 rc = ngx_http_discard_request_body(r); |
| 581 | 177 |
| 1374 | 178 if (rc != NGX_OK) { |
| 581 | 179 return rc; |
| 180 } | |
| 181 | |
| 182 if (ngx_http_set_content_type(r) != NGX_OK) { | |
| 183 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 184 } | |
| 185 | |
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186 if (ngx_http_upstream_create(r) != NGX_OK) { |
| 581 | 187 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
| 188 } | |
| 189 | |
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190 u = r->upstream; |
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191 |
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192 ngx_str_set(&u->schema, "memcached://"); |
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193 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module; |
| 581 | 194 |
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195 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); |
| 581 | 196 |
| 197 u->conf = &mlcf->upstream; | |
| 198 | |
| 199 u->create_request = ngx_http_memcached_create_request; | |
| 200 u->reinit_request = ngx_http_memcached_reinit_request; | |
| 201 u->process_header = ngx_http_memcached_process_header; | |
| 202 u->abort_request = ngx_http_memcached_abort_request; | |
| 203 u->finalize_request = ngx_http_memcached_finalize_request; | |
| 204 | |
| 205 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t)); | |
| 206 if (ctx == NULL) { | |
| 207 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 208 } | |
| 209 | |
| 210 ctx->rest = NGX_HTTP_MEMCACHED_END; | |
| 211 ctx->request = r; | |
| 212 | |
| 597 | 213 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module); |
| 214 | |
| 581 | 215 u->input_filter_init = ngx_http_memcached_filter_init; |
| 216 u->input_filter = ngx_http_memcached_filter; | |
| 217 u->input_filter_ctx = ctx; | |
| 218 | |
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219 r->main->count++; |
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220 |
| 581 | 221 ngx_http_upstream_init(r); |
| 222 | |
| 223 return NGX_DONE; | |
| 224 } | |
| 225 | |
| 226 | |
| 227 static ngx_int_t | |
| 228 ngx_http_memcached_create_request(ngx_http_request_t *r) | |
| 229 { | |
| 1076 | 230 size_t len; |
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231 uintptr_t escape; |
| 1076 | 232 ngx_buf_t *b; |
| 233 ngx_chain_t *cl; | |
| 234 ngx_http_memcached_ctx_t *ctx; | |
| 235 ngx_http_variable_value_t *vv; | |
| 236 ngx_http_memcached_loc_conf_t *mlcf; | |
| 237 | |
| 238 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module); | |
| 581 | 239 |
| 1076 | 240 vv = ngx_http_get_indexed_variable(r, mlcf->index); |
| 241 | |
| 242 if (vv == NULL || vv->not_found || vv->len == 0) { | |
| 243 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 244 "the \"$memcached_key\" variable is not set"); | |
| 245 return NGX_ERROR; | |
| 246 } | |
| 247 | |
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248 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED); |
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249 |
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250 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1; |
| 581 | 251 |
| 252 b = ngx_create_temp_buf(r->pool, len); | |
| 253 if (b == NULL) { | |
| 254 return NGX_ERROR; | |
| 255 } | |
| 256 | |
| 257 cl = ngx_alloc_chain_link(r->pool); | |
| 258 if (cl == NULL) { | |
| 259 return NGX_ERROR; | |
| 260 } | |
| 261 | |
| 262 cl->buf = b; | |
| 263 cl->next = NULL; | |
| 264 | |
| 265 r->upstream->request_bufs = cl; | |
| 266 | |
| 267 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' '; | |
| 268 | |
| 597 | 269 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module); |
| 270 | |
| 271 ctx->key.data = b->last; | |
| 272 | |
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273 if (escape == 0) { |
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274 b->last = ngx_copy(b->last, vv->data, vv->len); |
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275 |
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276 } else { |
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277 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len, |
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278 NGX_ESCAPE_MEMCACHED); |
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279 } |
| 581 | 280 |
| 597 | 281 ctx->key.len = b->last - ctx->key.data; |
| 581 | 282 |
| 283 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 597 | 284 "http memcached request: \"%V\"", &ctx->key); |
| 581 | 285 |
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286 *b->last++ = CR; *b->last++ = LF; |
| 581 | 287 |
| 288 return NGX_OK; | |
| 289 } | |
| 290 | |
| 291 | |
| 292 static ngx_int_t | |
| 293 ngx_http_memcached_reinit_request(ngx_http_request_t *r) | |
| 294 { | |
| 295 return NGX_OK; | |
| 296 } | |
| 297 | |
| 298 | |
| 299 static ngx_int_t | |
| 300 ngx_http_memcached_process_header(ngx_http_request_t *r) | |
| 301 { | |
| 597 | 302 u_char *p, *len; |
| 303 ngx_str_t line; | |
| 304 ngx_http_upstream_t *u; | |
| 305 ngx_http_memcached_ctx_t *ctx; | |
| 581 | 306 |
| 307 u = r->upstream; | |
| 308 | |
| 309 for (p = u->buffer.pos; p < u->buffer.last; p++) { | |
| 310 if (*p == LF) { | |
| 311 goto found; | |
| 312 } | |
| 313 } | |
| 314 | |
| 315 return NGX_AGAIN; | |
| 316 | |
| 317 found: | |
| 318 | |
| 319 *p = '\0'; | |
| 320 | |
| 321 line.len = p - u->buffer.pos - 1; | |
| 322 line.data = u->buffer.pos; | |
| 323 | |
| 324 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 325 "memcached: \"%V\"", &line); | |
| 326 | |
| 327 p = u->buffer.pos; | |
| 328 | |
| 597 | 329 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module); |
| 330 | |
| 581 | 331 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) { |
| 332 | |
| 333 p += sizeof("VALUE ") - 1; | |
| 334 | |
| 597 | 335 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) { |
| 581 | 336 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| 337 "memcached sent invalid key in response \"%V\" " | |
| 338 "for key \"%V\"", | |
| 597 | 339 &line, &ctx->key); |
| 581 | 340 |
| 341 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 342 } | |
| 343 | |
| 597 | 344 p += ctx->key.len; |
| 581 | 345 |
| 346 if (*p++ != ' ') { | |
| 347 goto no_valid; | |
| 348 } | |
| 349 | |
| 350 /* skip flags */ | |
| 351 | |
| 352 while (*p) { | |
| 353 if (*p++ == ' ') { | |
| 354 goto length; | |
| 355 } | |
| 356 } | |
| 357 | |
| 358 goto no_valid; | |
| 359 | |
| 360 length: | |
| 361 | |
| 362 len = p; | |
| 363 | |
| 364 while (*p && *p++ != CR) { /* void */ } | |
| 365 | |
| 366 r->headers_out.content_length_n = ngx_atoof(len, p - len - 1); | |
| 367 if (r->headers_out.content_length_n == -1) { | |
| 368 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 369 "memcached sent invalid length in response \"%V\" " | |
| 370 "for key \"%V\"", | |
| 597 | 371 &line, &ctx->key); |
| 581 | 372 return NGX_HTTP_UPSTREAM_INVALID_HEADER; |
| 373 } | |
| 374 | |
| 375 u->headers_in.status_n = 200; | |
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376 u->state->status = 200; |
| 581 | 377 u->buffer.pos = p + 1; |
| 378 | |
| 379 return NGX_OK; | |
| 380 } | |
| 381 | |
| 382 if (ngx_strcmp(p, "END\x0d") == 0) { | |
| 383 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, | |
| 597 | 384 "key: \"%V\" was not found by memcached", &ctx->key); |
| 581 | 385 |
| 386 u->headers_in.status_n = 404; | |
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387 u->state->status = 404; |
| 581 | 388 |
| 389 return NGX_OK; | |
| 390 } | |
| 391 | |
| 392 no_valid: | |
| 393 | |
| 394 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 395 "memcached sent invalid response: \"%V\"", &line); | |
| 396 | |
| 397 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 398 } | |
| 399 | |
| 400 | |
| 401 static ngx_int_t | |
| 402 ngx_http_memcached_filter_init(void *data) | |
| 403 { | |
| 404 ngx_http_memcached_ctx_t *ctx = data; | |
| 405 | |
| 406 ngx_http_upstream_t *u; | |
| 407 | |
| 408 u = ctx->request->upstream; | |
| 409 | |
| 410 u->length += NGX_HTTP_MEMCACHED_END; | |
| 411 | |
| 412 return NGX_OK; | |
| 413 } | |
| 414 | |
| 415 | |
| 416 static ngx_int_t | |
| 417 ngx_http_memcached_filter(void *data, ssize_t bytes) | |
| 418 { | |
| 419 ngx_http_memcached_ctx_t *ctx = data; | |
| 420 | |
| 421 u_char *last; | |
| 422 ngx_buf_t *b; | |
| 423 ngx_chain_t *cl, **ll; | |
| 424 ngx_http_upstream_t *u; | |
| 425 | |
| 426 u = ctx->request->upstream; | |
| 427 b = &u->buffer; | |
| 428 | |
| 429 if (u->length == ctx->rest) { | |
| 430 | |
| 431 if (ngx_strncmp(b->last, | |
| 1548 | 432 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest, |
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433 bytes) |
| 1548 | 434 != 0) |
| 581 | 435 { |
| 436 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 437 "memcached sent invalid trailer"); | |
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438 |
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439 u->length = 0; |
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440 ctx->rest = 0; |
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441 |
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442 return NGX_OK; |
| 581 | 443 } |
| 444 | |
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445 u->length -= bytes; |
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446 ctx->rest -= bytes; |
| 581 | 447 |
| 448 return NGX_OK; | |
| 449 } | |
| 450 | |
| 451 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
| 452 ll = &cl->next; | |
| 453 } | |
| 454 | |
| 455 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs); | |
| 456 if (cl == NULL) { | |
| 457 return NGX_ERROR; | |
| 458 } | |
| 459 | |
| 460 cl->buf->flush = 1; | |
| 461 cl->buf->memory = 1; | |
| 462 | |
| 463 *ll = cl; | |
| 464 | |
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465 last = b->last; |
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466 cl->buf->pos = last; |
| 581 | 467 b->last += bytes; |
| 468 cl->buf->last = b->last; | |
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469 cl->buf->tag = u->output.tag; |
| 581 | 470 |
| 471 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0, | |
| 472 "memcached filter bytes:%z size:%z length:%z rest:%z", | |
| 473 bytes, b->last - b->pos, u->length, ctx->rest); | |
| 474 | |
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475 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) { |
| 581 | 476 u->length -= bytes; |
| 477 return NGX_OK; | |
| 478 } | |
| 479 | |
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480 last += u->length - NGX_HTTP_MEMCACHED_END; |
| 581 | 481 |
| 482 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) { | |
| 483 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0, | |
| 484 "memcached sent invalid trailer"); | |
| 485 } | |
| 486 | |
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487 ctx->rest -= b->last - last; |
| 581 | 488 b->last = last; |
| 489 cl->buf->last = last; | |
| 490 u->length = ctx->rest; | |
| 491 | |
| 492 return NGX_OK; | |
| 493 } | |
| 494 | |
| 495 | |
| 496 static void | |
| 497 ngx_http_memcached_abort_request(ngx_http_request_t *r) | |
| 498 { | |
| 499 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 500 "abort http memcached request"); | |
| 501 return; | |
| 502 } | |
| 503 | |
| 504 | |
| 505 static void | |
| 506 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
| 507 { | |
| 508 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 509 "finalize http memcached request"); | |
| 510 return; | |
| 511 } | |
| 512 | |
| 513 | |
| 514 static void * | |
| 515 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf) | |
| 516 { | |
| 517 ngx_http_memcached_loc_conf_t *conf; | |
| 518 | |
| 519 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t)); | |
| 520 if (conf == NULL) { | |
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521 return NULL; |
| 581 | 522 } |
| 523 | |
| 524 /* | |
| 525 * set by ngx_pcalloc(): | |
| 526 * | |
| 527 * conf->upstream.bufs.num = 0; | |
| 528 * conf->upstream.next_upstream = 0; | |
| 529 * conf->upstream.temp_path = NULL; | |
| 530 * conf->upstream.uri = { 0, NULL }; | |
| 531 * conf->upstream.location = NULL; | |
| 532 */ | |
| 533 | |
| 534 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
| 535 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
| 536 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
| 537 | |
| 538 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
| 539 | |
| 884 | 540 /* the hardcoded values */ |
| 581 | 541 conf->upstream.cyclic_temp_file = 0; |
| 629 | 542 conf->upstream.buffering = 0; |
| 543 conf->upstream.ignore_client_abort = 0; | |
| 581 | 544 conf->upstream.send_lowat = 0; |
| 545 conf->upstream.bufs.num = 0; | |
| 546 conf->upstream.busy_buffers_size = 0; | |
| 547 conf->upstream.max_temp_file_size = 0; | |
| 548 conf->upstream.temp_file_write_size = 0; | |
| 657 | 549 conf->upstream.intercept_errors = 1; |
| 675 | 550 conf->upstream.intercept_404 = 1; |
| 581 | 551 conf->upstream.pass_request_headers = 0; |
| 552 conf->upstream.pass_request_body = 0; | |
| 553 | |
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554 conf->index = NGX_CONF_UNSET; |
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555 |
| 581 | 556 return conf; |
| 557 } | |
| 558 | |
| 559 | |
| 560 static char * | |
| 561 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 562 { | |
| 563 ngx_http_memcached_loc_conf_t *prev = parent; | |
| 564 ngx_http_memcached_loc_conf_t *conf = child; | |
| 565 | |
| 566 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
| 567 prev->upstream.connect_timeout, 60000); | |
| 568 | |
| 569 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
| 570 prev->upstream.send_timeout, 60000); | |
| 571 | |
| 572 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
| 573 prev->upstream.read_timeout, 60000); | |
| 574 | |
| 575 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
| 576 prev->upstream.buffer_size, | |
| 577 (size_t) ngx_pagesize); | |
| 578 | |
| 579 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
| 580 prev->upstream.next_upstream, | |
| 581 (NGX_CONF_BITMASK_SET | |
| 582 |NGX_HTTP_UPSTREAM_FT_ERROR | |
| 583 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
| 584 | |
| 665 | 585 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { |
| 586 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
| 587 |NGX_HTTP_UPSTREAM_FT_OFF; | |
| 588 } | |
| 589 | |
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590 if (conf->upstream.upstream == NULL) { |
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591 conf->upstream.upstream = prev->upstream.upstream; |
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592 } |
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593 |
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594 if (conf->index == NGX_CONF_UNSET) { |
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595 conf->index = prev->index; |
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596 } |
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597 |
| 581 | 598 return NGX_CONF_OK; |
| 599 } | |
| 600 | |
| 601 | |
| 602 static char * | |
| 603 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 604 { | |
| 2392 | 605 ngx_http_memcached_loc_conf_t *mlcf = conf; |
| 581 | 606 |
| 607 ngx_str_t *value; | |
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608 ngx_url_t u; |
| 581 | 609 ngx_http_core_loc_conf_t *clcf; |
| 610 | |
| 2392 | 611 if (mlcf->upstream.upstream) { |
| 581 | 612 return "is duplicate"; |
| 613 } | |
| 614 | |
| 615 value = cf->args->elts; | |
| 616 | |
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617 ngx_memzero(&u, sizeof(ngx_url_t)); |
| 581 | 618 |
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619 u.url = value[1]; |
| 884 | 620 u.no_resolve = 1; |
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621 |
| 2392 | 622 mlcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); |
| 623 if (mlcf->upstream.upstream == NULL) { | |
| 884 | 624 return NGX_CONF_ERROR; |
| 581 | 625 } |
| 626 | |
| 627 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 628 | |
| 629 clcf->handler = ngx_http_memcached_handler; | |
| 630 | |
| 631 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
| 632 clcf->auto_redirect = 1; | |
| 633 } | |
| 634 | |
| 2392 | 635 mlcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key); |
| 1076 | 636 |
| 2392 | 637 if (mlcf->index == NGX_ERROR) { |
| 1076 | 638 return NGX_CONF_ERROR; |
| 639 } | |
| 640 | |
| 581 | 641 return NGX_CONF_OK; |
| 642 } | |
| 884 | 643 |
| 644 | |
| 645 static char * | |
| 646 ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf, | |
| 647 ngx_command_t *cmd, void *conf) | |
| 648 { | |
| 649 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 650 "\"memcached_upstream_max_fails\" is not supported, " | |
| 651 "use the \"max_fails\" parameter of the \"server\" directive ", | |
| 652 "inside the \"upstream\" block"); | |
| 653 | |
| 654 return NGX_CONF_ERROR; | |
| 655 } | |
| 656 | |
| 657 | |
| 658 static char * | |
| 659 ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf, | |
| 660 ngx_command_t *cmd, void *conf) | |
| 661 { | |
| 662 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 663 "\"memcached_upstream_fail_timeout\" is not supported, " | |
| 664 "use the \"fail_timeout\" parameter of the \"server\" directive ", | |
| 665 "inside the \"upstream\" block"); | |
| 666 | |
| 667 return NGX_CONF_ERROR; | |
| 668 } |