Mercurial > hg > nginx
annotate src/http/ngx_http_upstream.h @ 2377:87b8c44906b5
*) refactor subrequest handling, now they run as separate posted requests
*) now $upstream_addr, $upstream_status, $upstream_response_time can be used
with log_subrequest
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Mon, 08 Dec 2008 14:23:20 +0000 |
| parents | c77f4710595c |
| children | 4ccaa42de633 |
| rev | line source |
|---|---|
| 479 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4 */ | |
| 5 | |
| 6 | |
| 7 #ifndef _NGX_HTTP_UPSTREAM_H_INCLUDED_ | |
| 8 #define _NGX_HTTP_UPSTREAM_H_INCLUDED_ | |
| 9 | |
| 10 | |
| 11 #include <ngx_config.h> | |
| 12 #include <ngx_core.h> | |
| 13 #include <ngx_event.h> | |
| 14 #include <ngx_event_connect.h> | |
| 15 #include <ngx_event_pipe.h> | |
| 16 #include <ngx_http.h> | |
| 17 | |
| 18 | |
| 665 | 19 #define NGX_HTTP_UPSTREAM_FT_ERROR 0x00000002 |
| 20 #define NGX_HTTP_UPSTREAM_FT_TIMEOUT 0x00000004 | |
| 21 #define NGX_HTTP_UPSTREAM_FT_INVALID_HEADER 0x00000008 | |
| 22 #define NGX_HTTP_UPSTREAM_FT_HTTP_500 0x00000010 | |
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23 #define NGX_HTTP_UPSTREAM_FT_HTTP_502 0x00000020 |
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24 #define NGX_HTTP_UPSTREAM_FT_HTTP_503 0x00000040 |
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25 #define NGX_HTTP_UPSTREAM_FT_HTTP_504 0x00000080 |
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26 #define NGX_HTTP_UPSTREAM_FT_HTTP_404 0x00000100 |
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27 #define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK 0x00000200 |
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28 #define NGX_HTTP_UPSTREAM_FT_MAX_WAITING 0x00000400 |
| 1378 | 29 #define NGX_HTTP_UPSTREAM_FT_NOLIVE 0x40000000 |
| 665 | 30 #define NGX_HTTP_UPSTREAM_FT_OFF 0x80000000 |
| 479 | 31 |
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32 #define NGX_HTTP_UPSTREAM_FT_STATUS (NGX_HTTP_UPSTREAM_FT_HTTP_500 \ |
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33 |NGX_HTTP_UPSTREAM_FT_HTTP_502 \ |
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34 |NGX_HTTP_UPSTREAM_FT_HTTP_503 \ |
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35 |NGX_HTTP_UPSTREAM_FT_HTTP_504 \ |
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36 |NGX_HTTP_UPSTREAM_FT_HTTP_404) |
| 479 | 37 |
| 38 #define NGX_HTTP_UPSTREAM_INVALID_HEADER 40 | |
| 39 | |
| 40 | |
| 41 typedef struct { | |
| 563 | 42 ngx_msec_t bl_time; |
| 509 | 43 ngx_uint_t bl_state; |
| 479 | 44 |
| 509 | 45 ngx_uint_t status; |
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46 time_t response_sec; |
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47 ngx_uint_t response_msec; |
| 563 | 48 |
| 509 | 49 ngx_str_t *peer; |
| 479 | 50 } ngx_http_upstream_state_t; |
| 51 | |
| 52 | |
| 53 typedef struct { | |
| 649 | 54 ngx_hash_t headers_in_hash; |
| 651 | 55 ngx_array_t upstreams; |
| 884 | 56 /* ngx_http_upstream_srv_conf_t */ |
| 509 | 57 } ngx_http_upstream_main_conf_t; |
| 58 | |
| 884 | 59 typedef struct ngx_http_upstream_srv_conf_s ngx_http_upstream_srv_conf_t; |
| 60 | |
| 61 typedef ngx_int_t (*ngx_http_upstream_init_pt)(ngx_conf_t *cf, | |
| 62 ngx_http_upstream_srv_conf_t *us); | |
| 63 typedef ngx_int_t (*ngx_http_upstream_init_peer_pt)(ngx_http_request_t *r, | |
| 64 ngx_http_upstream_srv_conf_t *us); | |
| 65 | |
| 66 | |
| 67 typedef struct { | |
| 68 ngx_http_upstream_init_pt init_upstream; | |
| 69 ngx_http_upstream_init_peer_pt init; | |
| 70 void *data; | |
| 71 } ngx_http_upstream_peer_t; | |
| 72 | |
| 509 | 73 |
| 74 typedef struct { | |
| 884 | 75 ngx_peer_addr_t *addrs; |
| 76 ngx_uint_t naddrs; | |
| 77 ngx_uint_t weight; | |
| 78 ngx_uint_t max_fails; | |
| 79 time_t fail_timeout; | |
| 80 | |
| 81 unsigned down:1; | |
| 82 unsigned backup:1; | |
| 83 } ngx_http_upstream_server_t; | |
| 84 | |
| 651 | 85 |
| 884 | 86 #define NGX_HTTP_UPSTREAM_CREATE 0x0001 |
| 87 #define NGX_HTTP_UPSTREAM_WEIGHT 0x0002 | |
| 88 #define NGX_HTTP_UPSTREAM_MAX_FAILS 0x0004 | |
| 89 #define NGX_HTTP_UPSTREAM_FAIL_TIMEOUT 0x0008 | |
| 90 #define NGX_HTTP_UPSTREAM_DOWN 0x0010 | |
| 91 #define NGX_HTTP_UPSTREAM_BACKUP 0x0020 | |
| 92 | |
| 651 | 93 |
| 884 | 94 struct ngx_http_upstream_srv_conf_s { |
| 95 ngx_http_upstream_peer_t peer; | |
| 96 void **srv_conf; | |
| 97 | |
| 98 ngx_array_t *servers; /* ngx_http_upstream_server_t */ | |
| 99 | |
| 100 ngx_uint_t flags; | |
| 651 | 101 ngx_str_t host; |
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102 u_char *file_name; |
| 651 | 103 ngx_uint_t line; |
| 104 in_port_t port; | |
| 906 | 105 in_port_t default_port; |
| 884 | 106 }; |
| 651 | 107 |
| 108 | |
| 109 typedef struct { | |
| 884 | 110 ngx_http_upstream_srv_conf_t *upstream; |
| 111 | |
| 509 | 112 ngx_msec_t connect_timeout; |
| 113 ngx_msec_t send_timeout; | |
| 114 ngx_msec_t read_timeout; | |
| 527 | 115 ngx_msec_t timeout; |
| 479 | 116 |
| 509 | 117 size_t send_lowat; |
| 581 | 118 size_t buffer_size; |
| 529 | 119 |
| 509 | 120 size_t busy_buffers_size; |
| 121 size_t max_temp_file_size; | |
| 122 size_t temp_file_write_size; | |
| 123 | |
| 529 | 124 size_t busy_buffers_size_conf; |
| 125 size_t max_temp_file_size_conf; | |
| 126 size_t temp_file_write_size_conf; | |
| 127 | |
| 509 | 128 ngx_uint_t next_upstream; |
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129 ngx_uint_t store_access; |
| 479 | 130 |
| 509 | 131 ngx_bufs_t bufs; |
| 479 | 132 |
| 581 | 133 ngx_flag_t buffering; |
| 509 | 134 ngx_flag_t pass_request_headers; |
| 135 ngx_flag_t pass_request_body; | |
| 136 | |
| 629 | 137 ngx_flag_t ignore_client_abort; |
| 657 | 138 ngx_flag_t intercept_errors; |
| 509 | 139 ngx_flag_t cyclic_temp_file; |
| 479 | 140 |
| 649 | 141 ngx_path_t *temp_path; |
| 479 | 142 |
| 649 | 143 ngx_hash_t hide_headers_hash; |
| 144 ngx_array_t *hide_headers; | |
| 145 ngx_array_t *pass_headers; | |
| 509 | 146 |
| 147 ngx_str_t schema; | |
| 577 | 148 |
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149 ngx_array_t *store_lengths; |
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150 ngx_array_t *store_values; |
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151 |
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152 signed store:2; |
| 675 | 153 unsigned intercept_404:1; |
| 649 | 154 unsigned change_buffering:1; |
| 581 | 155 |
| 577 | 156 #if (NGX_HTTP_SSL) |
| 157 ngx_ssl_t *ssl; | |
| 2184 | 158 ngx_flag_t ssl_session_reuse; |
| 577 | 159 #endif |
| 160 | |
| 479 | 161 } ngx_http_upstream_conf_t; |
| 162 | |
| 163 | |
| 509 | 164 typedef struct { |
| 165 ngx_str_t name; | |
| 166 ngx_http_header_handler_pt handler; | |
| 167 ngx_uint_t offset; | |
| 168 ngx_http_header_handler_pt copy_handler; | |
| 169 ngx_uint_t conf; | |
| 515 | 170 ngx_uint_t redirect; /* unsigned redirect:1; */ |
| 509 | 171 } ngx_http_upstream_header_t; |
| 172 | |
| 173 | |
| 174 typedef struct { | |
| 175 ngx_list_t headers; | |
| 176 | |
| 529 | 177 ngx_uint_t status_n; |
| 178 ngx_str_t status_line; | |
| 179 | |
| 509 | 180 ngx_table_elt_t *status; |
| 181 ngx_table_elt_t *date; | |
| 182 ngx_table_elt_t *server; | |
| 183 ngx_table_elt_t *connection; | |
| 184 | |
| 185 ngx_table_elt_t *expires; | |
| 186 ngx_table_elt_t *etag; | |
| 187 ngx_table_elt_t *x_accel_expires; | |
| 515 | 188 ngx_table_elt_t *x_accel_redirect; |
| 527 | 189 ngx_table_elt_t *x_accel_limit_rate; |
| 509 | 190 |
| 191 ngx_table_elt_t *content_type; | |
| 192 ngx_table_elt_t *content_length; | |
| 193 | |
| 194 ngx_table_elt_t *last_modified; | |
| 195 ngx_table_elt_t *location; | |
| 196 ngx_table_elt_t *accept_ranges; | |
| 529 | 197 ngx_table_elt_t *www_authenticate; |
| 509 | 198 |
| 199 #if (NGX_HTTP_GZIP) | |
| 200 ngx_table_elt_t *content_encoding; | |
| 201 #endif | |
| 202 | |
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203 off_t content_length_n; |
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204 |
| 509 | 205 ngx_array_t cache_control; |
| 206 } ngx_http_upstream_headers_in_t; | |
| 207 | |
| 479 | 208 |
| 1658 | 209 typedef struct { |
| 210 ngx_str_t host; | |
| 211 in_port_t port; | |
| 2285 | 212 ngx_uint_t no_port; /* unsigned no_port:1 */ |
| 1658 | 213 ngx_uint_t naddrs; |
| 214 in_addr_t *addrs; | |
| 215 ngx_resolver_ctx_t *ctx; | |
| 216 } ngx_http_upstream_resolved_t; | |
| 217 | |
| 218 | |
| 479 | 219 struct ngx_http_upstream_s { |
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220 ngx_event_handler_pt read_event_handler; |
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221 ngx_event_handler_pt write_event_handler; |
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222 |
| 509 | 223 ngx_peer_connection_t peer; |
| 479 | 224 |
| 581 | 225 ngx_event_pipe_t *pipe; |
| 479 | 226 |
| 509 | 227 ngx_chain_t *request_bufs; |
| 479 | 228 |
| 509 | 229 ngx_output_chain_ctx_t output; |
| 230 ngx_chain_writer_ctx_t writer; | |
| 479 | 231 |
| 509 | 232 ngx_http_upstream_conf_t *conf; |
| 479 | 233 |
| 509 | 234 ngx_http_upstream_headers_in_t headers_in; |
| 235 | |
| 1658 | 236 ngx_http_upstream_resolved_t *resolved; |
| 237 | |
| 581 | 238 ngx_buf_t buffer; |
| 239 size_t length; | |
| 240 | |
| 241 ngx_chain_t *out_bufs; | |
| 242 ngx_chain_t *busy_bufs; | |
| 243 ngx_chain_t *free_bufs; | |
| 244 | |
| 245 ngx_int_t (*input_filter_init)(void *data); | |
| 246 ngx_int_t (*input_filter)(void *data, ssize_t bytes); | |
| 247 void *input_filter_ctx; | |
| 479 | 248 |
| 509 | 249 ngx_int_t (*create_request)(ngx_http_request_t *r); |
| 250 ngx_int_t (*reinit_request)(ngx_http_request_t *r); | |
| 251 ngx_int_t (*process_header)(ngx_http_request_t *r); | |
| 252 void (*abort_request)(ngx_http_request_t *r); | |
| 253 void (*finalize_request)(ngx_http_request_t *r, | |
| 254 ngx_int_t rc); | |
| 255 ngx_int_t (*rewrite_redirect)(ngx_http_request_t *r, | |
| 256 ngx_table_elt_t *h, size_t prefix); | |
| 479 | 257 |
| 527 | 258 ngx_msec_t timeout; |
| 259 | |
| 509 | 260 ngx_http_upstream_state_t *state; |
| 479 | 261 |
| 1658 | 262 ngx_str_t method; |
| 263 ngx_str_t schema; | |
| 555 | 264 ngx_str_t uri; |
| 265 | |
| 569 | 266 ngx_http_cleanup_pt *cleanup; |
| 267 | |
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268 unsigned store:1; |
| 1565 | 269 unsigned cacheable:1; |
| 509 | 270 unsigned accel:1; |
| 1658 | 271 unsigned ssl:1; |
| 479 | 272 |
| 649 | 273 unsigned buffering:1; |
| 274 | |
| 509 | 275 unsigned request_sent:1; |
| 276 unsigned header_sent:1; | |
| 479 | 277 }; |
| 278 | |
| 279 | |
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280 typedef struct { |
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281 ngx_uint_t status; |
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282 ngx_uint_t mask; |
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283 } ngx_http_upstream_next_t; |
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284 |
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285 |
| 1162 | 286 ngx_int_t ngx_http_upstream_header_variable(ngx_http_request_t *r, |
| 287 ngx_http_variable_value_t *v, uintptr_t data); | |
| 288 | |
| 479 | 289 void ngx_http_upstream_init(ngx_http_request_t *r); |
| 651 | 290 ngx_http_upstream_srv_conf_t *ngx_http_upstream_add(ngx_conf_t *cf, |
| 884 | 291 ngx_url_t *u, ngx_uint_t flags); |
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292 ngx_int_t ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf, |
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293 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev, |
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294 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash); |
| 884 | 295 |
| 296 | |
| 297 #define ngx_http_conf_upstream_srv_conf(uscf, module) \ | |
| 298 uscf->srv_conf[module.ctx_index] | |
| 509 | 299 |
| 479 | 300 |
| 509 | 301 extern ngx_module_t ngx_http_upstream_module; |
| 479 | 302 |
| 303 | |
| 304 #endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */ |