xref: /unit/src/nxt_controller.c (revision 65)
120Sigor@sysoev.ru 
220Sigor@sysoev.ru /*
320Sigor@sysoev.ru  * Copyright (C) Igor Sysoev
420Sigor@sysoev.ru  * Copyright (C) Valentin V. Bartenev
520Sigor@sysoev.ru  * Copyright (C) NGINX, Inc.
620Sigor@sysoev.ru  */
720Sigor@sysoev.ru 
820Sigor@sysoev.ru #include <nxt_main.h>
920Sigor@sysoev.ru #include <nxt_runtime.h>
1020Sigor@sysoev.ru #include <nxt_master_process.h>
1129Svbart@nginx.com #include <nxt_conf.h>
1220Sigor@sysoev.ru 
1320Sigor@sysoev.ru 
1427Svbart@nginx.com typedef struct {
1544Svbart@nginx.com     nxt_conf_json_value_t  *root;
16*65Sigor@sysoev.ru     nxt_mp_t               *pool;
1744Svbart@nginx.com } nxt_controller_conf_t;
1844Svbart@nginx.com 
1944Svbart@nginx.com 
2044Svbart@nginx.com typedef struct {
2127Svbart@nginx.com     nxt_http_request_parse_t  parser;
2227Svbart@nginx.com     size_t                    length;
2333Svbart@nginx.com 
2444Svbart@nginx.com     nxt_controller_conf_t     conf;
2527Svbart@nginx.com } nxt_controller_request_t;
2627Svbart@nginx.com 
2727Svbart@nginx.com 
2844Svbart@nginx.com typedef struct {
2944Svbart@nginx.com     nxt_str_t              status_line;
3044Svbart@nginx.com     nxt_conf_json_value_t  *json_value;
3144Svbart@nginx.com     nxt_str_t              json_string;
3244Svbart@nginx.com } nxt_controller_response_t;
3344Svbart@nginx.com 
3444Svbart@nginx.com 
3520Sigor@sysoev.ru static void nxt_controller_conn_init(nxt_task_t *task, void *obj, void *data);
3620Sigor@sysoev.ru static void nxt_controller_conn_read(nxt_task_t *task, void *obj, void *data);
3762Sigor@sysoev.ru static nxt_msec_t nxt_controller_conn_timeout_value(nxt_conn_t *c,
3820Sigor@sysoev.ru     uintptr_t data);
3920Sigor@sysoev.ru static void nxt_controller_conn_read_error(nxt_task_t *task, void *obj,
4020Sigor@sysoev.ru     void *data);
4120Sigor@sysoev.ru static void nxt_controller_conn_read_timeout(nxt_task_t *task, void *obj,
4220Sigor@sysoev.ru     void *data);
4327Svbart@nginx.com static void nxt_controller_conn_body_read(nxt_task_t *task, void *obj,
4427Svbart@nginx.com     void *data);
4527Svbart@nginx.com static void nxt_controller_conn_write(nxt_task_t *task, void *obj, void *data);
4627Svbart@nginx.com static void nxt_controller_conn_write_error(nxt_task_t *task, void *obj,
4727Svbart@nginx.com     void *data);
4827Svbart@nginx.com static void nxt_controller_conn_write_timeout(nxt_task_t *task, void *obj,
4927Svbart@nginx.com     void *data);
5020Sigor@sysoev.ru static void nxt_controller_conn_close(nxt_task_t *task, void *obj, void *data);
5120Sigor@sysoev.ru static void nxt_controller_conn_free(nxt_task_t *task, void *obj, void *data);
5220Sigor@sysoev.ru 
5327Svbart@nginx.com static nxt_int_t nxt_controller_request_content_length(void *ctx,
5460Svbart@nginx.com     nxt_http_field_t *field, uintptr_t data, nxt_log_t *log);
5527Svbart@nginx.com 
5627Svbart@nginx.com static void nxt_controller_process_request(nxt_task_t *task,
5762Sigor@sysoev.ru     nxt_conn_t *c, nxt_controller_request_t *r);
5862Sigor@sysoev.ru static nxt_int_t nxt_controller_response(nxt_task_t *task, nxt_conn_t *c,
5944Svbart@nginx.com     nxt_controller_response_t *resp);
6045Svbart@nginx.com static nxt_buf_t *nxt_controller_response_body(nxt_controller_response_t *resp,
61*65Sigor@sysoev.ru     nxt_mp_t *pool);
6227Svbart@nginx.com 
6327Svbart@nginx.com 
6460Svbart@nginx.com static nxt_http_fields_hash_entry_t  nxt_controller_request_fields[] = {
6527Svbart@nginx.com     { nxt_string("Content-Length"),
6627Svbart@nginx.com       &nxt_controller_request_content_length, 0 },
6727Svbart@nginx.com 
6827Svbart@nginx.com     { nxt_null_string, NULL, 0 }
6927Svbart@nginx.com };
7027Svbart@nginx.com 
7160Svbart@nginx.com static nxt_http_fields_hash_t  *nxt_controller_fields_hash;
7227Svbart@nginx.com 
7344Svbart@nginx.com 
7444Svbart@nginx.com static nxt_controller_conf_t  nxt_controller_conf;
7527Svbart@nginx.com 
7620Sigor@sysoev.ru 
7720Sigor@sysoev.ru static const nxt_event_conn_state_t  nxt_controller_conn_read_state;
7827Svbart@nginx.com static const nxt_event_conn_state_t  nxt_controller_conn_body_read_state;
7927Svbart@nginx.com static const nxt_event_conn_state_t  nxt_controller_conn_write_state;
8020Sigor@sysoev.ru static const nxt_event_conn_state_t  nxt_controller_conn_close_state;
8120Sigor@sysoev.ru 
8220Sigor@sysoev.ru 
8320Sigor@sysoev.ru nxt_int_t
8420Sigor@sysoev.ru nxt_controller_start(nxt_task_t *task, nxt_runtime_t *rt)
8520Sigor@sysoev.ru {
86*65Sigor@sysoev.ru     nxt_mp_t                *mp;
8744Svbart@nginx.com     nxt_conf_json_value_t   *conf;
8827Svbart@nginx.com     nxt_http_fields_hash_t  *hash;
8927Svbart@nginx.com 
9044Svbart@nginx.com     static const nxt_str_t json
9144Svbart@nginx.com         = nxt_string("{ \"sockets\": {}, \"applications\": {} }");
9244Svbart@nginx.com 
9360Svbart@nginx.com     hash = nxt_http_fields_hash_create(nxt_controller_request_fields,
9460Svbart@nginx.com                                        rt->mem_pool);
9527Svbart@nginx.com     if (nxt_slow_path(hash == NULL)) {
9627Svbart@nginx.com         return NXT_ERROR;
9727Svbart@nginx.com     }
9827Svbart@nginx.com 
9960Svbart@nginx.com     nxt_controller_fields_hash = hash;
10027Svbart@nginx.com 
10154Sigor@sysoev.ru     if (nxt_listen_event(task, rt->controller_socket) == NULL) {
10220Sigor@sysoev.ru         return NXT_ERROR;
10320Sigor@sysoev.ru     }
10420Sigor@sysoev.ru 
105*65Sigor@sysoev.ru     mp = nxt_mp_create(1024, 128, 256, 32);
10644Svbart@nginx.com 
10744Svbart@nginx.com     if (nxt_slow_path(mp == NULL)) {
10844Svbart@nginx.com         return NXT_ERROR;
10944Svbart@nginx.com     }
11044Svbart@nginx.com 
11144Svbart@nginx.com     conf = nxt_conf_json_parse(json.start, json.length, mp);
11244Svbart@nginx.com 
11344Svbart@nginx.com     if (conf == NULL) {
11444Svbart@nginx.com         return NXT_ERROR;
11544Svbart@nginx.com     }
11644Svbart@nginx.com 
11744Svbart@nginx.com     nxt_controller_conf.root = conf;
11844Svbart@nginx.com     nxt_controller_conf.pool = mp;
11944Svbart@nginx.com 
12020Sigor@sysoev.ru     return NXT_OK;
12120Sigor@sysoev.ru }
12220Sigor@sysoev.ru 
12320Sigor@sysoev.ru 
12420Sigor@sysoev.ru nxt_int_t
12520Sigor@sysoev.ru nxt_runtime_controller_socket(nxt_task_t *task, nxt_runtime_t *rt)
12620Sigor@sysoev.ru {
12720Sigor@sysoev.ru     nxt_sockaddr_t       *sa;
12820Sigor@sysoev.ru     nxt_listen_socket_t  *ls;
12920Sigor@sysoev.ru 
13020Sigor@sysoev.ru     sa = rt->controller_listen;
13120Sigor@sysoev.ru 
13220Sigor@sysoev.ru     if (rt->controller_listen == NULL) {
13320Sigor@sysoev.ru         sa = nxt_sockaddr_alloc(rt->mem_pool, sizeof(struct sockaddr_in),
13420Sigor@sysoev.ru                                 NXT_INET_ADDR_STR_LEN);
13520Sigor@sysoev.ru         if (sa == NULL) {
13620Sigor@sysoev.ru             return NXT_ERROR;
13720Sigor@sysoev.ru         }
13820Sigor@sysoev.ru 
13920Sigor@sysoev.ru         sa->type = SOCK_STREAM;
14020Sigor@sysoev.ru         sa->u.sockaddr_in.sin_family = AF_INET;
14120Sigor@sysoev.ru         sa->u.sockaddr_in.sin_port = htons(8443);
14220Sigor@sysoev.ru 
14320Sigor@sysoev.ru         nxt_sockaddr_text(sa);
14420Sigor@sysoev.ru 
14520Sigor@sysoev.ru         rt->controller_listen = sa;
14620Sigor@sysoev.ru     }
14720Sigor@sysoev.ru 
148*65Sigor@sysoev.ru     ls = nxt_mp_alloc(rt->mem_pool, sizeof(nxt_listen_socket_t));
14920Sigor@sysoev.ru     if (ls == NULL) {
15020Sigor@sysoev.ru         return NXT_ERROR;
15120Sigor@sysoev.ru     }
15220Sigor@sysoev.ru 
15320Sigor@sysoev.ru     ls->sockaddr = nxt_sockaddr_create(rt->mem_pool, &sa->u.sockaddr,
15420Sigor@sysoev.ru                                        sa->socklen, sa->length);
15520Sigor@sysoev.ru     if (ls->sockaddr == NULL) {
15620Sigor@sysoev.ru         return NXT_ERROR;
15720Sigor@sysoev.ru     }
15820Sigor@sysoev.ru 
15920Sigor@sysoev.ru     ls->sockaddr->type = sa->type;
16020Sigor@sysoev.ru 
16120Sigor@sysoev.ru     nxt_sockaddr_text(ls->sockaddr);
16220Sigor@sysoev.ru 
16320Sigor@sysoev.ru     ls->socket = -1;
16420Sigor@sysoev.ru     ls->backlog = NXT_LISTEN_BACKLOG;
16520Sigor@sysoev.ru     ls->read_after_accept = 1;
16620Sigor@sysoev.ru     ls->flags = NXT_NONBLOCK;
16720Sigor@sysoev.ru 
16820Sigor@sysoev.ru #if 0
16920Sigor@sysoev.ru     /* STUB */
170*65Sigor@sysoev.ru     wq = nxt_mp_zget(cf->mem_pool, sizeof(nxt_work_queue_t));
17120Sigor@sysoev.ru     if (wq == NULL) {
17220Sigor@sysoev.ru         return NXT_ERROR;
17320Sigor@sysoev.ru     }
17420Sigor@sysoev.ru     nxt_work_queue_name(wq, "listen");
17520Sigor@sysoev.ru     /**/
17620Sigor@sysoev.ru 
17720Sigor@sysoev.ru     ls->work_queue = wq;
17820Sigor@sysoev.ru #endif
17920Sigor@sysoev.ru     ls->handler = nxt_controller_conn_init;
18020Sigor@sysoev.ru 
18120Sigor@sysoev.ru     if (nxt_listen_socket_create(task, ls, 0) != NXT_OK) {
18220Sigor@sysoev.ru         return NXT_ERROR;
18320Sigor@sysoev.ru     }
18420Sigor@sysoev.ru 
18520Sigor@sysoev.ru     rt->controller_socket = ls;
18620Sigor@sysoev.ru 
18720Sigor@sysoev.ru     return NXT_OK;
18820Sigor@sysoev.ru }
18920Sigor@sysoev.ru 
19020Sigor@sysoev.ru 
19120Sigor@sysoev.ru static void
19220Sigor@sysoev.ru nxt_controller_conn_init(nxt_task_t *task, void *obj, void *data)
19320Sigor@sysoev.ru {
19427Svbart@nginx.com     nxt_buf_t                 *b;
19562Sigor@sysoev.ru     nxt_conn_t                *c;
19627Svbart@nginx.com     nxt_event_engine_t        *engine;
19727Svbart@nginx.com     nxt_controller_request_t  *r;
19820Sigor@sysoev.ru 
19920Sigor@sysoev.ru     c = obj;
20020Sigor@sysoev.ru 
20120Sigor@sysoev.ru     nxt_debug(task, "controller conn init fd:%d", c->socket.fd);
20220Sigor@sysoev.ru 
203*65Sigor@sysoev.ru     r = nxt_mp_zget(c->mem_pool, sizeof(nxt_controller_request_t));
20427Svbart@nginx.com     if (nxt_slow_path(r == NULL)) {
20527Svbart@nginx.com         nxt_controller_conn_free(task, c, NULL);
20627Svbart@nginx.com         return;
20727Svbart@nginx.com     }
20827Svbart@nginx.com 
20960Svbart@nginx.com     if (nxt_slow_path(nxt_http_parse_request_init(&r->parser, c->mem_pool)
21060Svbart@nginx.com                       != NXT_OK))
21160Svbart@nginx.com     {
21260Svbart@nginx.com         nxt_controller_conn_free(task, c, NULL);
21360Svbart@nginx.com         return;
21460Svbart@nginx.com     }
21527Svbart@nginx.com 
21620Sigor@sysoev.ru     b = nxt_buf_mem_alloc(c->mem_pool, 1024, 0);
21720Sigor@sysoev.ru     if (nxt_slow_path(b == NULL)) {
21820Sigor@sysoev.ru         nxt_controller_conn_free(task, c, NULL);
21920Sigor@sysoev.ru         return;
22020Sigor@sysoev.ru     }
22120Sigor@sysoev.ru 
22220Sigor@sysoev.ru     c->read = b;
22327Svbart@nginx.com     c->socket.data = r;
22420Sigor@sysoev.ru     c->socket.read_ready = 1;
22520Sigor@sysoev.ru     c->read_state = &nxt_controller_conn_read_state;
22620Sigor@sysoev.ru 
22720Sigor@sysoev.ru     engine = task->thread->engine;
22820Sigor@sysoev.ru     c->read_work_queue = &engine->read_work_queue;
22927Svbart@nginx.com     c->write_work_queue = &engine->write_work_queue;
23020Sigor@sysoev.ru 
23162Sigor@sysoev.ru     nxt_conn_read(engine, c);
23220Sigor@sysoev.ru }
23320Sigor@sysoev.ru 
23420Sigor@sysoev.ru 
23520Sigor@sysoev.ru static const nxt_event_conn_state_t  nxt_controller_conn_read_state
23620Sigor@sysoev.ru     nxt_aligned(64) =
23720Sigor@sysoev.ru {
23856Sigor@sysoev.ru     .ready_handler = nxt_controller_conn_read,
23956Sigor@sysoev.ru     .close_handler = nxt_controller_conn_close,
24056Sigor@sysoev.ru     .error_handler = nxt_controller_conn_read_error,
24120Sigor@sysoev.ru 
24256Sigor@sysoev.ru     .timer_handler = nxt_controller_conn_read_timeout,
24356Sigor@sysoev.ru     .timer_value = nxt_controller_conn_timeout_value,
24456Sigor@sysoev.ru     .timer_data = 60 * 1000,
24520Sigor@sysoev.ru };
24620Sigor@sysoev.ru 
24720Sigor@sysoev.ru 
24820Sigor@sysoev.ru static void
24920Sigor@sysoev.ru nxt_controller_conn_read(nxt_task_t *task, void *obj, void *data)
25020Sigor@sysoev.ru {
25127Svbart@nginx.com     size_t                    preread;
25227Svbart@nginx.com     nxt_buf_t                 *b;
25327Svbart@nginx.com     nxt_int_t                 rc;
25462Sigor@sysoev.ru     nxt_conn_t                *c;
25527Svbart@nginx.com     nxt_controller_request_t  *r;
25620Sigor@sysoev.ru 
25720Sigor@sysoev.ru     c = obj;
25827Svbart@nginx.com     r = data;
25920Sigor@sysoev.ru 
26020Sigor@sysoev.ru     nxt_debug(task, "controller conn read");
26120Sigor@sysoev.ru 
26227Svbart@nginx.com     nxt_queue_remove(&c->link);
26327Svbart@nginx.com     nxt_queue_self(&c->link);
26427Svbart@nginx.com 
26527Svbart@nginx.com     b = c->read;
26627Svbart@nginx.com 
26727Svbart@nginx.com     rc = nxt_http_parse_request(&r->parser, &b->mem);
26827Svbart@nginx.com 
26927Svbart@nginx.com     if (nxt_slow_path(rc != NXT_DONE)) {
27027Svbart@nginx.com 
27127Svbart@nginx.com         if (rc == NXT_AGAIN) {
27227Svbart@nginx.com             if (nxt_buf_mem_free_size(&b->mem) == 0) {
27327Svbart@nginx.com                 nxt_log(task, NXT_LOG_ERR, "too long request headers");
27427Svbart@nginx.com                 nxt_controller_conn_close(task, c, r);
27527Svbart@nginx.com                 return;
27627Svbart@nginx.com             }
27727Svbart@nginx.com 
27862Sigor@sysoev.ru             nxt_conn_read(task->thread->engine, c);
27927Svbart@nginx.com             return;
28027Svbart@nginx.com         }
28127Svbart@nginx.com 
28227Svbart@nginx.com         /* rc == NXT_ERROR */
28327Svbart@nginx.com 
28427Svbart@nginx.com         nxt_log(task, NXT_LOG_ERR, "parsing error");
28527Svbart@nginx.com 
28627Svbart@nginx.com         nxt_controller_conn_close(task, c, r);
28727Svbart@nginx.com         return;
28827Svbart@nginx.com     }
28927Svbart@nginx.com 
29060Svbart@nginx.com     rc = nxt_http_fields_process(r->parser.fields, nxt_controller_fields_hash,
29160Svbart@nginx.com                                  r, task->log);
29260Svbart@nginx.com 
29360Svbart@nginx.com     if (nxt_slow_path(rc != NXT_OK)) {
29460Svbart@nginx.com         nxt_controller_conn_close(task, c, r);
29560Svbart@nginx.com         return;
29660Svbart@nginx.com     }
29760Svbart@nginx.com 
29827Svbart@nginx.com     preread = nxt_buf_mem_used_size(&b->mem);
29927Svbart@nginx.com 
30027Svbart@nginx.com     nxt_debug(task, "controller request header parsing complete, "
30127Svbart@nginx.com                     "body length: %O, preread: %uz",
30227Svbart@nginx.com                     r->length, preread);
30327Svbart@nginx.com 
30427Svbart@nginx.com     if (preread >= r->length) {
30527Svbart@nginx.com         nxt_controller_process_request(task, c, r);
30627Svbart@nginx.com         return;
30727Svbart@nginx.com     }
30827Svbart@nginx.com 
30927Svbart@nginx.com     if (r->length - preread > (size_t) nxt_buf_mem_free_size(&b->mem)) {
31027Svbart@nginx.com         b = nxt_buf_mem_alloc(c->mem_pool, r->length, 0);
31127Svbart@nginx.com         if (nxt_slow_path(b == NULL)) {
31227Svbart@nginx.com             nxt_controller_conn_free(task, c, NULL);
31327Svbart@nginx.com             return;
31427Svbart@nginx.com         }
31527Svbart@nginx.com 
31627Svbart@nginx.com         b->mem.free = nxt_cpymem(b->mem.free, c->read->mem.pos, preread);
31727Svbart@nginx.com 
31827Svbart@nginx.com         c->read = b;
31927Svbart@nginx.com     }
32027Svbart@nginx.com 
32127Svbart@nginx.com     c->read_state = &nxt_controller_conn_body_read_state;
32227Svbart@nginx.com 
32362Sigor@sysoev.ru     nxt_conn_read(task->thread->engine, c);
32420Sigor@sysoev.ru }
32520Sigor@sysoev.ru 
32620Sigor@sysoev.ru 
32720Sigor@sysoev.ru static nxt_msec_t
32862Sigor@sysoev.ru nxt_controller_conn_timeout_value(nxt_conn_t *c, uintptr_t data)
32920Sigor@sysoev.ru {
33020Sigor@sysoev.ru     return (nxt_msec_t) data;
33120Sigor@sysoev.ru }
33220Sigor@sysoev.ru 
33320Sigor@sysoev.ru 
33420Sigor@sysoev.ru static void
33520Sigor@sysoev.ru nxt_controller_conn_read_error(nxt_task_t *task, void *obj, void *data)
33620Sigor@sysoev.ru {
33762Sigor@sysoev.ru     nxt_conn_t  *c;
33820Sigor@sysoev.ru 
33920Sigor@sysoev.ru     c = obj;
34020Sigor@sysoev.ru 
34120Sigor@sysoev.ru     nxt_debug(task, "controller conn read error");
34220Sigor@sysoev.ru 
34327Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
34420Sigor@sysoev.ru }
34520Sigor@sysoev.ru 
34620Sigor@sysoev.ru 
34720Sigor@sysoev.ru static void
34820Sigor@sysoev.ru nxt_controller_conn_read_timeout(nxt_task_t *task, void *obj, void *data)
34920Sigor@sysoev.ru {
35062Sigor@sysoev.ru     nxt_timer_t  *timer;
35162Sigor@sysoev.ru     nxt_conn_t   *c;
35220Sigor@sysoev.ru 
35362Sigor@sysoev.ru     timer = obj;
35420Sigor@sysoev.ru 
35562Sigor@sysoev.ru     c = nxt_read_timer_conn(timer);
35620Sigor@sysoev.ru     c->socket.timedout = 1;
35720Sigor@sysoev.ru     c->socket.closed = 1;
35820Sigor@sysoev.ru 
35920Sigor@sysoev.ru     nxt_debug(task, "controller conn read timeout");
36020Sigor@sysoev.ru 
36127Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
36227Svbart@nginx.com }
36327Svbart@nginx.com 
36427Svbart@nginx.com 
36527Svbart@nginx.com static const nxt_event_conn_state_t  nxt_controller_conn_body_read_state
36627Svbart@nginx.com     nxt_aligned(64) =
36727Svbart@nginx.com {
36856Sigor@sysoev.ru     .ready_handler = nxt_controller_conn_body_read,
36956Sigor@sysoev.ru     .close_handler = nxt_controller_conn_close,
37056Sigor@sysoev.ru     .error_handler = nxt_controller_conn_read_error,
37127Svbart@nginx.com 
37256Sigor@sysoev.ru     .timer_handler = nxt_controller_conn_read_timeout,
37356Sigor@sysoev.ru     .timer_value = nxt_controller_conn_timeout_value,
37456Sigor@sysoev.ru     .timer_data = 60 * 1000,
37556Sigor@sysoev.ru     .timer_autoreset = 1,
37627Svbart@nginx.com };
37727Svbart@nginx.com 
37827Svbart@nginx.com 
37927Svbart@nginx.com static void
38027Svbart@nginx.com nxt_controller_conn_body_read(nxt_task_t *task, void *obj, void *data)
38127Svbart@nginx.com {
38262Sigor@sysoev.ru     size_t      rest;
38362Sigor@sysoev.ru     nxt_buf_t   *b;
38462Sigor@sysoev.ru     nxt_conn_t  *c;
38527Svbart@nginx.com 
38627Svbart@nginx.com     c = obj;
38727Svbart@nginx.com 
38827Svbart@nginx.com     nxt_debug(task, "controller conn body read");
38927Svbart@nginx.com 
39027Svbart@nginx.com     b = c->read;
39127Svbart@nginx.com 
39227Svbart@nginx.com     rest = nxt_buf_mem_free_size(&b->mem);
39327Svbart@nginx.com 
39427Svbart@nginx.com     if (rest == 0) {
39527Svbart@nginx.com         nxt_debug(task, "controller conn body read complete");
39627Svbart@nginx.com 
39727Svbart@nginx.com         nxt_controller_process_request(task, c, data);
39827Svbart@nginx.com         return;
39927Svbart@nginx.com     }
40027Svbart@nginx.com 
40127Svbart@nginx.com     nxt_debug(task, "controller conn body read again, rest: %uz", rest);
40227Svbart@nginx.com 
40362Sigor@sysoev.ru     nxt_conn_read(task->thread->engine, c);
40427Svbart@nginx.com }
40527Svbart@nginx.com 
40627Svbart@nginx.com 
40727Svbart@nginx.com static const nxt_event_conn_state_t  nxt_controller_conn_write_state
40827Svbart@nginx.com     nxt_aligned(64) =
40927Svbart@nginx.com {
41056Sigor@sysoev.ru     .ready_handler = nxt_controller_conn_write,
41156Sigor@sysoev.ru     .error_handler = nxt_controller_conn_write_error,
41227Svbart@nginx.com 
41356Sigor@sysoev.ru     .timer_handler = nxt_controller_conn_write_timeout,
41456Sigor@sysoev.ru     .timer_value = nxt_controller_conn_timeout_value,
41556Sigor@sysoev.ru     .timer_data = 60 * 1000,
41656Sigor@sysoev.ru     .timer_autoreset = 1,
41727Svbart@nginx.com };
41827Svbart@nginx.com 
41927Svbart@nginx.com 
42027Svbart@nginx.com static void
42127Svbart@nginx.com nxt_controller_conn_write(nxt_task_t *task, void *obj, void *data)
42227Svbart@nginx.com {
42362Sigor@sysoev.ru     nxt_buf_t   *b;
42462Sigor@sysoev.ru     nxt_conn_t  *c;
42527Svbart@nginx.com 
42627Svbart@nginx.com     c = obj;
42727Svbart@nginx.com 
42827Svbart@nginx.com     nxt_debug(task, "controller conn write");
42927Svbart@nginx.com 
43027Svbart@nginx.com     b = c->write;
43127Svbart@nginx.com 
43227Svbart@nginx.com     if (b->mem.pos != b->mem.free) {
43362Sigor@sysoev.ru         nxt_conn_write(task->thread->engine, c);
43427Svbart@nginx.com         return;
43527Svbart@nginx.com     }
43627Svbart@nginx.com 
43727Svbart@nginx.com     nxt_debug(task, "controller conn write complete");
43827Svbart@nginx.com 
43927Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
44027Svbart@nginx.com }
44127Svbart@nginx.com 
44227Svbart@nginx.com 
44327Svbart@nginx.com static void
44427Svbart@nginx.com nxt_controller_conn_write_error(nxt_task_t *task, void *obj, void *data)
44527Svbart@nginx.com {
44662Sigor@sysoev.ru     nxt_conn_t  *c;
44727Svbart@nginx.com 
44827Svbart@nginx.com     c = obj;
44927Svbart@nginx.com 
45027Svbart@nginx.com     nxt_debug(task, "controller conn write error");
45127Svbart@nginx.com 
45227Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
45327Svbart@nginx.com }
45427Svbart@nginx.com 
45527Svbart@nginx.com 
45627Svbart@nginx.com static void
45727Svbart@nginx.com nxt_controller_conn_write_timeout(nxt_task_t *task, void *obj, void *data)
45827Svbart@nginx.com {
45962Sigor@sysoev.ru     nxt_conn_t   *c;
46062Sigor@sysoev.ru     nxt_timer_t  *timer;
46127Svbart@nginx.com 
46262Sigor@sysoev.ru     timer = obj;
46327Svbart@nginx.com 
46462Sigor@sysoev.ru     c = nxt_write_timer_conn(timer);
46527Svbart@nginx.com     c->socket.timedout = 1;
46627Svbart@nginx.com     c->socket.closed = 1;
46727Svbart@nginx.com 
46827Svbart@nginx.com     nxt_debug(task, "controller conn write timeout");
46927Svbart@nginx.com 
47027Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
47120Sigor@sysoev.ru }
47220Sigor@sysoev.ru 
47320Sigor@sysoev.ru 
47420Sigor@sysoev.ru static const nxt_event_conn_state_t  nxt_controller_conn_close_state
47520Sigor@sysoev.ru     nxt_aligned(64) =
47620Sigor@sysoev.ru {
47756Sigor@sysoev.ru     .ready_handler = nxt_controller_conn_free,
47820Sigor@sysoev.ru };
47920Sigor@sysoev.ru 
48020Sigor@sysoev.ru 
48120Sigor@sysoev.ru static void
48220Sigor@sysoev.ru nxt_controller_conn_close(nxt_task_t *task, void *obj, void *data)
48320Sigor@sysoev.ru {
48462Sigor@sysoev.ru     nxt_conn_t  *c;
48520Sigor@sysoev.ru 
48620Sigor@sysoev.ru     c = obj;
48720Sigor@sysoev.ru 
48820Sigor@sysoev.ru     nxt_debug(task, "controller conn close");
48920Sigor@sysoev.ru 
49027Svbart@nginx.com     nxt_queue_remove(&c->link);
49127Svbart@nginx.com 
49220Sigor@sysoev.ru     c->write_state = &nxt_controller_conn_close_state;
49320Sigor@sysoev.ru 
49462Sigor@sysoev.ru     nxt_conn_close(task->thread->engine, c);
49520Sigor@sysoev.ru }
49620Sigor@sysoev.ru 
49720Sigor@sysoev.ru 
49820Sigor@sysoev.ru static void
49920Sigor@sysoev.ru nxt_controller_conn_free(nxt_task_t *task, void *obj, void *data)
50020Sigor@sysoev.ru {
50162Sigor@sysoev.ru     nxt_conn_t  *c;
50220Sigor@sysoev.ru 
50320Sigor@sysoev.ru     c = obj;
50420Sigor@sysoev.ru 
50520Sigor@sysoev.ru     nxt_debug(task, "controller conn free");
50620Sigor@sysoev.ru 
507*65Sigor@sysoev.ru     nxt_mp_destroy(c->mem_pool);
50820Sigor@sysoev.ru 
50920Sigor@sysoev.ru     //nxt_free(c);
51020Sigor@sysoev.ru }
51127Svbart@nginx.com 
51227Svbart@nginx.com 
51327Svbart@nginx.com static nxt_int_t
51460Svbart@nginx.com nxt_controller_request_content_length(void *ctx, nxt_http_field_t *field,
51560Svbart@nginx.com     uintptr_t data, nxt_log_t *log)
51627Svbart@nginx.com {
51727Svbart@nginx.com     off_t                     length;
51827Svbart@nginx.com     nxt_controller_request_t  *r;
51927Svbart@nginx.com 
52027Svbart@nginx.com     r = ctx;
52127Svbart@nginx.com 
52260Svbart@nginx.com     length = nxt_off_t_parse(field->value.start, field->value.length);
52327Svbart@nginx.com 
52427Svbart@nginx.com     if (nxt_fast_path(length > 0)) {
52560Svbart@nginx.com         nxt_log_error(NXT_LOG_ERR, log, "Content-Length is too big");
52627Svbart@nginx.com 
52727Svbart@nginx.com         r->length = length;
52827Svbart@nginx.com         return NXT_OK;
52927Svbart@nginx.com     }
53027Svbart@nginx.com 
53160Svbart@nginx.com     nxt_log_error(NXT_LOG_ERR, log, "Content-Length is invalid");
53227Svbart@nginx.com 
53327Svbart@nginx.com     return NXT_ERROR;
53427Svbart@nginx.com }
53527Svbart@nginx.com 
53627Svbart@nginx.com 
53727Svbart@nginx.com static void
53862Sigor@sysoev.ru nxt_controller_process_request(nxt_task_t *task, nxt_conn_t *c,
53944Svbart@nginx.com     nxt_controller_request_t *req)
54027Svbart@nginx.com {
541*65Sigor@sysoev.ru     nxt_mp_t                   *mp;
54251Svbart@nginx.com     nxt_int_t                  rc;
54346Svbart@nginx.com     nxt_str_t                  path;
54451Svbart@nginx.com     nxt_uint_t                 status;
54551Svbart@nginx.com     nxt_buf_mem_t              *mbuf;
54651Svbart@nginx.com     nxt_conf_json_op_t         *ops;
54746Svbart@nginx.com     nxt_conf_json_value_t      *value;
54844Svbart@nginx.com     nxt_controller_response_t  resp;
54944Svbart@nginx.com 
55051Svbart@nginx.com     static const nxt_str_t empty_obj = nxt_string("{}");
55151Svbart@nginx.com 
55251Svbart@nginx.com     path.start = req->parser.target_start;
55351Svbart@nginx.com 
55451Svbart@nginx.com     if (req->parser.args_start != NULL) {
55551Svbart@nginx.com         path.length = req->parser.args_start - path.start;
55651Svbart@nginx.com 
55751Svbart@nginx.com     } else {
55851Svbart@nginx.com         path.length = req->parser.target_end - path.start;
55951Svbart@nginx.com     }
56051Svbart@nginx.com 
56151Svbart@nginx.com     if (path.length > 1 && path.start[path.length - 1] == '/') {
56251Svbart@nginx.com         path.length--;
56351Svbart@nginx.com     }
56451Svbart@nginx.com 
56544Svbart@nginx.com     nxt_memzero(&resp, sizeof(nxt_controller_response_t));
56644Svbart@nginx.com 
56744Svbart@nginx.com     if (nxt_str_eq(&req->parser.method, "GET", 3)) {
56846Svbart@nginx.com 
56951Svbart@nginx.com         value = nxt_conf_json_get_value(nxt_controller_conf.root, &path);
57051Svbart@nginx.com 
57151Svbart@nginx.com         if (value == NULL) {
57251Svbart@nginx.com             status = 404;
57351Svbart@nginx.com             goto done;
57451Svbart@nginx.com         }
57551Svbart@nginx.com 
57651Svbart@nginx.com         resp.json_value = value;
57746Svbart@nginx.com 
57851Svbart@nginx.com         status = 200;
57951Svbart@nginx.com         goto done;
58051Svbart@nginx.com     }
58151Svbart@nginx.com 
58251Svbart@nginx.com     if (nxt_str_eq(&req->parser.method, "PUT", 3)) {
58346Svbart@nginx.com 
584*65Sigor@sysoev.ru         mp = nxt_mp_create(1024, 128, 256, 32);
58551Svbart@nginx.com 
58651Svbart@nginx.com         if (nxt_slow_path(mp == NULL)) {
58751Svbart@nginx.com             status = 500;
58851Svbart@nginx.com             goto done;
58946Svbart@nginx.com         }
59046Svbart@nginx.com 
59151Svbart@nginx.com         mbuf = &c->read->mem;
59251Svbart@nginx.com 
59351Svbart@nginx.com         value = nxt_conf_json_parse(mbuf->pos, mbuf->free - mbuf->pos, mp);
59451Svbart@nginx.com 
59551Svbart@nginx.com         if (value == NULL) {
596*65Sigor@sysoev.ru             nxt_mp_destroy(mp);
59751Svbart@nginx.com             status = 400;
59851Svbart@nginx.com             goto done;
59951Svbart@nginx.com         }
60051Svbart@nginx.com 
60151Svbart@nginx.com         if (path.length != 1) {
60251Svbart@nginx.com             rc = nxt_conf_json_op_compile(nxt_controller_conf.root, value,
60351Svbart@nginx.com                                           &ops, &path, c->mem_pool);
60446Svbart@nginx.com 
60551Svbart@nginx.com             if (rc != NXT_OK) {
60651Svbart@nginx.com                 if (rc == NXT_DECLINED) {
60751Svbart@nginx.com                     status = 404;
60851Svbart@nginx.com                     goto done;
60951Svbart@nginx.com                 }
61046Svbart@nginx.com 
61151Svbart@nginx.com                 status = 500;
61251Svbart@nginx.com                 goto done;
61351Svbart@nginx.com             }
61451Svbart@nginx.com 
61551Svbart@nginx.com             value = nxt_conf_json_clone_value(nxt_controller_conf.root,
61651Svbart@nginx.com                                               ops, mp);
61751Svbart@nginx.com 
61851Svbart@nginx.com             if (nxt_slow_path(value == NULL)) {
619*65Sigor@sysoev.ru                 nxt_mp_destroy(mp);
62051Svbart@nginx.com                 status = 500;
62151Svbart@nginx.com                 goto done;
62251Svbart@nginx.com             }
62346Svbart@nginx.com         }
62444Svbart@nginx.com 
625*65Sigor@sysoev.ru         nxt_mp_destroy(nxt_controller_conf.pool);
62651Svbart@nginx.com 
62751Svbart@nginx.com         nxt_controller_conf.root = value;
62851Svbart@nginx.com         nxt_controller_conf.pool = mp;
62944Svbart@nginx.com 
63051Svbart@nginx.com         nxt_str_set(&resp.json_string, "{ \"success\": \"Updated.\" }");
63151Svbart@nginx.com 
63251Svbart@nginx.com         status = 200;
63351Svbart@nginx.com         goto done;
63451Svbart@nginx.com     }
63527Svbart@nginx.com 
63651Svbart@nginx.com     if (nxt_str_eq(&req->parser.method, "DELETE", 6)) {
63751Svbart@nginx.com 
63851Svbart@nginx.com         if (path.length == 1) {
639*65Sigor@sysoev.ru             mp = nxt_mp_create(1024, 128, 256, 32);
64044Svbart@nginx.com 
64151Svbart@nginx.com             if (nxt_slow_path(mp == NULL)) {
64251Svbart@nginx.com                 status = 500;
64351Svbart@nginx.com                 goto done;
64451Svbart@nginx.com             }
64551Svbart@nginx.com 
64651Svbart@nginx.com             value = nxt_conf_json_parse(empty_obj.start, empty_obj.length, mp);
64727Svbart@nginx.com 
64844Svbart@nginx.com         } else {
64951Svbart@nginx.com             rc = nxt_conf_json_op_compile(nxt_controller_conf.root, NULL, &ops,
65051Svbart@nginx.com                                           &path, c->mem_pool);
65151Svbart@nginx.com 
65251Svbart@nginx.com             if (rc != NXT_OK) {
65351Svbart@nginx.com                 if (rc == NXT_DECLINED) {
65451Svbart@nginx.com                     status = 404;
65551Svbart@nginx.com                     goto done;
65651Svbart@nginx.com                 }
65751Svbart@nginx.com 
65851Svbart@nginx.com                 status = 500;
65951Svbart@nginx.com                 goto done;
66051Svbart@nginx.com             }
66151Svbart@nginx.com 
662*65Sigor@sysoev.ru             mp = nxt_mp_create(1024, 128, 256, 32);
66351Svbart@nginx.com 
66451Svbart@nginx.com             if (nxt_slow_path(mp == NULL)) {
66551Svbart@nginx.com                 status = 500;
66651Svbart@nginx.com                 goto done;
66751Svbart@nginx.com             }
66851Svbart@nginx.com 
66951Svbart@nginx.com             value = nxt_conf_json_clone_value(nxt_controller_conf.root,
67051Svbart@nginx.com                                               ops, mp);
67151Svbart@nginx.com         }
67251Svbart@nginx.com 
67351Svbart@nginx.com         if (nxt_slow_path(value == NULL)) {
674*65Sigor@sysoev.ru             nxt_mp_destroy(mp);
67551Svbart@nginx.com             status = 500;
67651Svbart@nginx.com             goto done;
67744Svbart@nginx.com         }
67844Svbart@nginx.com 
679*65Sigor@sysoev.ru         nxt_mp_destroy(nxt_controller_conf.pool);
68051Svbart@nginx.com 
68151Svbart@nginx.com         nxt_controller_conf.root = value;
68251Svbart@nginx.com         nxt_controller_conf.pool = mp;
68351Svbart@nginx.com 
68451Svbart@nginx.com         nxt_str_set(&resp.json_string, "{ \"success\": \"Deleted.\" }");
68551Svbart@nginx.com 
68651Svbart@nginx.com         status = 200;
68751Svbart@nginx.com         goto done;
68851Svbart@nginx.com     }
68951Svbart@nginx.com 
69051Svbart@nginx.com     status = 405;
69151Svbart@nginx.com 
69251Svbart@nginx.com done:
69351Svbart@nginx.com 
69451Svbart@nginx.com     switch (status) {
69551Svbart@nginx.com 
69651Svbart@nginx.com     case 200:
69751Svbart@nginx.com         nxt_str_set(&resp.status_line, "200 OK");
69851Svbart@nginx.com         break;
69951Svbart@nginx.com 
70051Svbart@nginx.com     case 400:
70151Svbart@nginx.com         nxt_str_set(&resp.status_line, "400 Bad Request");
70251Svbart@nginx.com         nxt_str_set(&resp.json_string,
70351Svbart@nginx.com                     "{ \"error\": \"Invalid JSON.\" }");
70451Svbart@nginx.com         break;
70551Svbart@nginx.com 
70651Svbart@nginx.com     case 404:
70751Svbart@nginx.com         nxt_str_set(&resp.status_line, "404 Not Found");
70851Svbart@nginx.com         nxt_str_set(&resp.json_string,
70951Svbart@nginx.com                     "{ \"error\": \"Value doesn't exist.\" }");
71051Svbart@nginx.com         break;
71151Svbart@nginx.com 
71251Svbart@nginx.com     case 405:
71344Svbart@nginx.com         nxt_str_set(&resp.status_line, "405 Method Not Allowed");
71451Svbart@nginx.com         nxt_str_set(&resp.json_string, "{ \"error\": \"Invalid method.\" }");
71551Svbart@nginx.com         break;
71651Svbart@nginx.com 
71751Svbart@nginx.com     case 500:
71851Svbart@nginx.com         nxt_str_set(&resp.status_line, "500 Internal Server Error");
71951Svbart@nginx.com         nxt_str_set(&resp.json_string,
72051Svbart@nginx.com                     "{ \"error\": \"Memory allocation failed.\" }");
72151Svbart@nginx.com         break;
72229Svbart@nginx.com     }
72327Svbart@nginx.com 
72444Svbart@nginx.com     if (nxt_controller_response(task, c, &resp) != NXT_OK) {
72544Svbart@nginx.com         nxt_controller_conn_close(task, c, req);
72627Svbart@nginx.com     }
72727Svbart@nginx.com }
72827Svbart@nginx.com 
72927Svbart@nginx.com 
73027Svbart@nginx.com static nxt_int_t
73162Sigor@sysoev.ru nxt_controller_response(nxt_task_t *task, nxt_conn_t *c,
73244Svbart@nginx.com     nxt_controller_response_t *resp)
73333Svbart@nginx.com {
73444Svbart@nginx.com     size_t     size;
73533Svbart@nginx.com     nxt_buf_t  *b;
73633Svbart@nginx.com 
73745Svbart@nginx.com     size = sizeof("HTTP/1.0 " "\r\n\r\n") - 1 + resp->status_line.length;
73833Svbart@nginx.com 
73944Svbart@nginx.com     b = nxt_buf_mem_alloc(c->mem_pool, size, 0);
74033Svbart@nginx.com     if (nxt_slow_path(b == NULL)) {
74144Svbart@nginx.com         return NXT_ERROR;
74233Svbart@nginx.com     }
74333Svbart@nginx.com 
74444Svbart@nginx.com     b->mem.free = nxt_cpymem(b->mem.free, "HTTP/1.0 ", sizeof("HTTP/1.0 ") - 1);
74544Svbart@nginx.com     b->mem.free = nxt_cpymem(b->mem.free, resp->status_line.start,
74644Svbart@nginx.com                              resp->status_line.length);
74744Svbart@nginx.com 
74844Svbart@nginx.com     b->mem.free = nxt_cpymem(b->mem.free, "\r\n\r\n", sizeof("\r\n\r\n") - 1);
74944Svbart@nginx.com 
75045Svbart@nginx.com     b->next = nxt_controller_response_body(resp, c->mem_pool);
75145Svbart@nginx.com 
75245Svbart@nginx.com     if (nxt_slow_path(b->next == NULL)) {
75345Svbart@nginx.com         return NXT_ERROR;
75444Svbart@nginx.com     }
75533Svbart@nginx.com 
75633Svbart@nginx.com     c->write = b;
75744Svbart@nginx.com     c->write_state = &nxt_controller_conn_write_state;
75833Svbart@nginx.com 
75962Sigor@sysoev.ru     nxt_conn_write(task->thread->engine, c);
76033Svbart@nginx.com 
76144Svbart@nginx.com     return NXT_OK;
76233Svbart@nginx.com }
76345Svbart@nginx.com 
76445Svbart@nginx.com 
76545Svbart@nginx.com static nxt_buf_t *
766*65Sigor@sysoev.ru nxt_controller_response_body(nxt_controller_response_t *resp, nxt_mp_t *pool)
76745Svbart@nginx.com {
76845Svbart@nginx.com     size_t                  size;
76945Svbart@nginx.com     nxt_buf_t               *b;
77045Svbart@nginx.com     nxt_conf_json_value_t   *value;
77145Svbart@nginx.com     nxt_conf_json_pretty_t  pretty;
77245Svbart@nginx.com 
77345Svbart@nginx.com     if (resp->json_value) {
77445Svbart@nginx.com         value = resp->json_value;
77545Svbart@nginx.com 
77645Svbart@nginx.com     } else {
77745Svbart@nginx.com         value = nxt_conf_json_parse(resp->json_string.start,
77845Svbart@nginx.com                                     resp->json_string.length, pool);
77945Svbart@nginx.com 
78045Svbart@nginx.com         if (nxt_slow_path(value == NULL)) {
78145Svbart@nginx.com             return NULL;
78245Svbart@nginx.com         }
78345Svbart@nginx.com     }
78445Svbart@nginx.com 
78545Svbart@nginx.com     nxt_memzero(&pretty, sizeof(nxt_conf_json_pretty_t));
78645Svbart@nginx.com 
78745Svbart@nginx.com     size = nxt_conf_json_print_value(NULL, value, &pretty) + 2;
78845Svbart@nginx.com 
78945Svbart@nginx.com     b = nxt_buf_mem_alloc(pool, size, 0);
79045Svbart@nginx.com     if (nxt_slow_path(b == NULL)) {
79145Svbart@nginx.com         return NULL;
79245Svbart@nginx.com     }
79345Svbart@nginx.com 
79445Svbart@nginx.com     nxt_memzero(&pretty, sizeof(nxt_conf_json_pretty_t));
79545Svbart@nginx.com 
79645Svbart@nginx.com     b->mem.free = (u_char *) nxt_conf_json_print_value(b->mem.free, value,
79745Svbart@nginx.com                                                        &pretty);
79845Svbart@nginx.com 
79945Svbart@nginx.com     *b->mem.free++ = '\r';
80045Svbart@nginx.com     *b->mem.free++ = '\n';
80145Svbart@nginx.com 
80245Svbart@nginx.com     return b;
80345Svbart@nginx.com }
804