xref: /unit/src/nxt_controller.c (revision 56)
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;
1644Svbart@nginx.com     nxt_mem_pool_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);
3720Sigor@sysoev.ru static nxt_msec_t nxt_controller_conn_timeout_value(nxt_event_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,
5427Svbart@nginx.com     nxt_str_t *name, nxt_str_t *value, uintptr_t data);
5527Svbart@nginx.com 
5627Svbart@nginx.com static void nxt_controller_process_request(nxt_task_t *task,
5727Svbart@nginx.com     nxt_event_conn_t *c, nxt_controller_request_t *r);
5844Svbart@nginx.com static nxt_int_t nxt_controller_response(nxt_task_t *task, nxt_event_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,
6145Svbart@nginx.com     nxt_mem_pool_t *pool);
6227Svbart@nginx.com 
6327Svbart@nginx.com 
6427Svbart@nginx.com static nxt_http_fields_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 
7144Svbart@nginx.com static nxt_http_fields_hash_t  *nxt_controller_request_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 {
8644Svbart@nginx.com     nxt_mem_pool_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 
9327Svbart@nginx.com     hash = nxt_http_fields_hash(nxt_controller_request_fields, rt->mem_pool);
9427Svbart@nginx.com 
9527Svbart@nginx.com     if (nxt_slow_path(hash == NULL)) {
9627Svbart@nginx.com         return NXT_ERROR;
9727Svbart@nginx.com     }
9827Svbart@nginx.com 
9927Svbart@nginx.com     nxt_controller_request_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 
10544Svbart@nginx.com     mp = nxt_mem_pool_create(256);
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 
14820Sigor@sysoev.ru     ls = nxt_mem_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 */
17020Sigor@sysoev.ru     wq = nxt_mem_zalloc(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     /*
18220Sigor@sysoev.ru      * Connection memory pool chunk size is tunned to
18320Sigor@sysoev.ru      * allocate the most data in one mem_pool chunk.
18420Sigor@sysoev.ru      */
18520Sigor@sysoev.ru     ls->mem_pool_size = nxt_listen_socket_pool_min_size(ls)
18620Sigor@sysoev.ru                         + sizeof(nxt_event_conn_proxy_t)
18720Sigor@sysoev.ru                         + sizeof(nxt_event_conn_t)
18820Sigor@sysoev.ru                         + 4 * sizeof(nxt_buf_t);
18920Sigor@sysoev.ru 
19020Sigor@sysoev.ru     if (nxt_listen_socket_create(task, ls, 0) != NXT_OK) {
19120Sigor@sysoev.ru         return NXT_ERROR;
19220Sigor@sysoev.ru     }
19320Sigor@sysoev.ru 
19420Sigor@sysoev.ru     rt->controller_socket = ls;
19520Sigor@sysoev.ru 
19620Sigor@sysoev.ru     return NXT_OK;
19720Sigor@sysoev.ru }
19820Sigor@sysoev.ru 
19920Sigor@sysoev.ru 
20020Sigor@sysoev.ru static void
20120Sigor@sysoev.ru nxt_controller_conn_init(nxt_task_t *task, void *obj, void *data)
20220Sigor@sysoev.ru {
20327Svbart@nginx.com     nxt_buf_t                 *b;
20427Svbart@nginx.com     nxt_event_conn_t          *c;
20527Svbart@nginx.com     nxt_event_engine_t        *engine;
20627Svbart@nginx.com     nxt_controller_request_t  *r;
20720Sigor@sysoev.ru 
20820Sigor@sysoev.ru     c = obj;
20920Sigor@sysoev.ru 
21020Sigor@sysoev.ru     nxt_debug(task, "controller conn init fd:%d", c->socket.fd);
21120Sigor@sysoev.ru 
21227Svbart@nginx.com     r = nxt_mem_zalloc(c->mem_pool, sizeof(nxt_controller_request_t));
21327Svbart@nginx.com     if (nxt_slow_path(r == NULL)) {
21427Svbart@nginx.com         nxt_controller_conn_free(task, c, NULL);
21527Svbart@nginx.com         return;
21627Svbart@nginx.com     }
21727Svbart@nginx.com 
21827Svbart@nginx.com     r->parser.hash = nxt_controller_request_fields_hash;
21927Svbart@nginx.com     r->parser.ctx = r;
22027Svbart@nginx.com 
22120Sigor@sysoev.ru     b = nxt_buf_mem_alloc(c->mem_pool, 1024, 0);
22220Sigor@sysoev.ru     if (nxt_slow_path(b == NULL)) {
22320Sigor@sysoev.ru         nxt_controller_conn_free(task, c, NULL);
22420Sigor@sysoev.ru         return;
22520Sigor@sysoev.ru     }
22620Sigor@sysoev.ru 
22720Sigor@sysoev.ru     c->read = b;
22827Svbart@nginx.com     c->socket.data = r;
22920Sigor@sysoev.ru     c->socket.read_ready = 1;
23020Sigor@sysoev.ru     c->read_state = &nxt_controller_conn_read_state;
23120Sigor@sysoev.ru 
23220Sigor@sysoev.ru     engine = task->thread->engine;
23320Sigor@sysoev.ru     c->read_work_queue = &engine->read_work_queue;
23427Svbart@nginx.com     c->write_work_queue = &engine->write_work_queue;
23520Sigor@sysoev.ru 
23620Sigor@sysoev.ru     nxt_event_conn_read(engine, c);
23720Sigor@sysoev.ru }
23820Sigor@sysoev.ru 
23920Sigor@sysoev.ru 
24020Sigor@sysoev.ru static const nxt_event_conn_state_t  nxt_controller_conn_read_state
24120Sigor@sysoev.ru     nxt_aligned(64) =
24220Sigor@sysoev.ru {
243*56Sigor@sysoev.ru     .ready_handler = nxt_controller_conn_read,
244*56Sigor@sysoev.ru     .close_handler = nxt_controller_conn_close,
245*56Sigor@sysoev.ru     .error_handler = nxt_controller_conn_read_error,
24620Sigor@sysoev.ru 
247*56Sigor@sysoev.ru     .timer_handler = nxt_controller_conn_read_timeout,
248*56Sigor@sysoev.ru     .timer_value = nxt_controller_conn_timeout_value,
249*56Sigor@sysoev.ru     .timer_data = 60 * 1000,
25020Sigor@sysoev.ru };
25120Sigor@sysoev.ru 
25220Sigor@sysoev.ru 
25320Sigor@sysoev.ru static void
25420Sigor@sysoev.ru nxt_controller_conn_read(nxt_task_t *task, void *obj, void *data)
25520Sigor@sysoev.ru {
25627Svbart@nginx.com     size_t                    preread;
25727Svbart@nginx.com     nxt_buf_t                 *b;
25827Svbart@nginx.com     nxt_int_t                 rc;
25927Svbart@nginx.com     nxt_event_conn_t          *c;
26027Svbart@nginx.com     nxt_controller_request_t  *r;
26120Sigor@sysoev.ru 
26220Sigor@sysoev.ru     c = obj;
26327Svbart@nginx.com     r = data;
26420Sigor@sysoev.ru 
26520Sigor@sysoev.ru     nxt_debug(task, "controller conn read");
26620Sigor@sysoev.ru 
26727Svbart@nginx.com     nxt_queue_remove(&c->link);
26827Svbart@nginx.com     nxt_queue_self(&c->link);
26927Svbart@nginx.com 
27027Svbart@nginx.com     b = c->read;
27127Svbart@nginx.com 
27227Svbart@nginx.com     rc = nxt_http_parse_request(&r->parser, &b->mem);
27327Svbart@nginx.com 
27427Svbart@nginx.com     if (nxt_slow_path(rc != NXT_DONE)) {
27527Svbart@nginx.com 
27627Svbart@nginx.com         if (rc == NXT_AGAIN) {
27727Svbart@nginx.com             if (nxt_buf_mem_free_size(&b->mem) == 0) {
27827Svbart@nginx.com                 nxt_log(task, NXT_LOG_ERR, "too long request headers");
27927Svbart@nginx.com                 nxt_controller_conn_close(task, c, r);
28027Svbart@nginx.com                 return;
28127Svbart@nginx.com             }
28227Svbart@nginx.com 
28327Svbart@nginx.com             nxt_event_conn_read(task->thread->engine, c);
28427Svbart@nginx.com             return;
28527Svbart@nginx.com         }
28627Svbart@nginx.com 
28727Svbart@nginx.com         /* rc == NXT_ERROR */
28827Svbart@nginx.com 
28927Svbart@nginx.com         nxt_log(task, NXT_LOG_ERR, "parsing error");
29027Svbart@nginx.com 
29127Svbart@nginx.com         nxt_controller_conn_close(task, c, r);
29227Svbart@nginx.com         return;
29327Svbart@nginx.com     }
29427Svbart@nginx.com 
29527Svbart@nginx.com     preread = nxt_buf_mem_used_size(&b->mem);
29627Svbart@nginx.com 
29727Svbart@nginx.com     nxt_debug(task, "controller request header parsing complete, "
29827Svbart@nginx.com                     "body length: %O, preread: %uz",
29927Svbart@nginx.com                     r->length, preread);
30027Svbart@nginx.com 
30127Svbart@nginx.com     if (preread >= r->length) {
30227Svbart@nginx.com         nxt_controller_process_request(task, c, r);
30327Svbart@nginx.com         return;
30427Svbart@nginx.com     }
30527Svbart@nginx.com 
30627Svbart@nginx.com     if (r->length - preread > (size_t) nxt_buf_mem_free_size(&b->mem)) {
30727Svbart@nginx.com         b = nxt_buf_mem_alloc(c->mem_pool, r->length, 0);
30827Svbart@nginx.com         if (nxt_slow_path(b == NULL)) {
30927Svbart@nginx.com             nxt_controller_conn_free(task, c, NULL);
31027Svbart@nginx.com             return;
31127Svbart@nginx.com         }
31227Svbart@nginx.com 
31327Svbart@nginx.com         b->mem.free = nxt_cpymem(b->mem.free, c->read->mem.pos, preread);
31427Svbart@nginx.com 
31527Svbart@nginx.com         c->read = b;
31627Svbart@nginx.com     }
31727Svbart@nginx.com 
31827Svbart@nginx.com     c->read_state = &nxt_controller_conn_body_read_state;
31927Svbart@nginx.com 
32027Svbart@nginx.com     nxt_event_conn_read(task->thread->engine, c);
32120Sigor@sysoev.ru }
32220Sigor@sysoev.ru 
32320Sigor@sysoev.ru 
32420Sigor@sysoev.ru static nxt_msec_t
32520Sigor@sysoev.ru nxt_controller_conn_timeout_value(nxt_event_conn_t *c, uintptr_t data)
32620Sigor@sysoev.ru {
32720Sigor@sysoev.ru     return (nxt_msec_t) data;
32820Sigor@sysoev.ru }
32920Sigor@sysoev.ru 
33020Sigor@sysoev.ru 
33120Sigor@sysoev.ru static void
33220Sigor@sysoev.ru nxt_controller_conn_read_error(nxt_task_t *task, void *obj, void *data)
33320Sigor@sysoev.ru {
33420Sigor@sysoev.ru     nxt_event_conn_t  *c;
33520Sigor@sysoev.ru 
33620Sigor@sysoev.ru     c = obj;
33720Sigor@sysoev.ru 
33820Sigor@sysoev.ru     nxt_debug(task, "controller conn read error");
33920Sigor@sysoev.ru 
34027Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
34120Sigor@sysoev.ru }
34220Sigor@sysoev.ru 
34320Sigor@sysoev.ru 
34420Sigor@sysoev.ru static void
34520Sigor@sysoev.ru nxt_controller_conn_read_timeout(nxt_task_t *task, void *obj, void *data)
34620Sigor@sysoev.ru {
34720Sigor@sysoev.ru     nxt_timer_t       *ev;
34820Sigor@sysoev.ru     nxt_event_conn_t  *c;
34920Sigor@sysoev.ru 
35020Sigor@sysoev.ru     ev = obj;
35120Sigor@sysoev.ru 
35220Sigor@sysoev.ru     c = nxt_event_read_timer_conn(ev);
35320Sigor@sysoev.ru     c->socket.timedout = 1;
35420Sigor@sysoev.ru     c->socket.closed = 1;
35520Sigor@sysoev.ru 
35620Sigor@sysoev.ru     nxt_debug(task, "controller conn read timeout");
35720Sigor@sysoev.ru 
35827Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
35927Svbart@nginx.com }
36027Svbart@nginx.com 
36127Svbart@nginx.com 
36227Svbart@nginx.com static const nxt_event_conn_state_t  nxt_controller_conn_body_read_state
36327Svbart@nginx.com     nxt_aligned(64) =
36427Svbart@nginx.com {
365*56Sigor@sysoev.ru     .ready_handler = nxt_controller_conn_body_read,
366*56Sigor@sysoev.ru     .close_handler = nxt_controller_conn_close,
367*56Sigor@sysoev.ru     .error_handler = nxt_controller_conn_read_error,
36827Svbart@nginx.com 
369*56Sigor@sysoev.ru     .timer_handler = nxt_controller_conn_read_timeout,
370*56Sigor@sysoev.ru     .timer_value = nxt_controller_conn_timeout_value,
371*56Sigor@sysoev.ru     .timer_data = 60 * 1000,
372*56Sigor@sysoev.ru     .timer_autoreset = 1,
37327Svbart@nginx.com };
37427Svbart@nginx.com 
37527Svbart@nginx.com 
37627Svbart@nginx.com static void
37727Svbart@nginx.com nxt_controller_conn_body_read(nxt_task_t *task, void *obj, void *data)
37827Svbart@nginx.com {
37927Svbart@nginx.com     size_t            rest;
38027Svbart@nginx.com     nxt_buf_t         *b;
38127Svbart@nginx.com     nxt_event_conn_t  *c;
38227Svbart@nginx.com 
38327Svbart@nginx.com     c = obj;
38427Svbart@nginx.com 
38527Svbart@nginx.com     nxt_debug(task, "controller conn body read");
38627Svbart@nginx.com 
38727Svbart@nginx.com     b = c->read;
38827Svbart@nginx.com 
38927Svbart@nginx.com     rest = nxt_buf_mem_free_size(&b->mem);
39027Svbart@nginx.com 
39127Svbart@nginx.com     if (rest == 0) {
39227Svbart@nginx.com         nxt_debug(task, "controller conn body read complete");
39327Svbart@nginx.com 
39427Svbart@nginx.com         nxt_controller_process_request(task, c, data);
39527Svbart@nginx.com         return;
39627Svbart@nginx.com     }
39727Svbart@nginx.com 
39827Svbart@nginx.com     nxt_debug(task, "controller conn body read again, rest: %uz", rest);
39927Svbart@nginx.com 
40027Svbart@nginx.com     nxt_event_conn_read(task->thread->engine, c);
40127Svbart@nginx.com }
40227Svbart@nginx.com 
40327Svbart@nginx.com 
40427Svbart@nginx.com static const nxt_event_conn_state_t  nxt_controller_conn_write_state
40527Svbart@nginx.com     nxt_aligned(64) =
40627Svbart@nginx.com {
407*56Sigor@sysoev.ru     .ready_handler = nxt_controller_conn_write,
408*56Sigor@sysoev.ru     .error_handler = nxt_controller_conn_write_error,
40927Svbart@nginx.com 
410*56Sigor@sysoev.ru     .timer_handler = nxt_controller_conn_write_timeout,
411*56Sigor@sysoev.ru     .timer_value = nxt_controller_conn_timeout_value,
412*56Sigor@sysoev.ru     .timer_data = 60 * 1000,
413*56Sigor@sysoev.ru     .timer_autoreset = 1,
41427Svbart@nginx.com };
41527Svbart@nginx.com 
41627Svbart@nginx.com 
41727Svbart@nginx.com static void
41827Svbart@nginx.com nxt_controller_conn_write(nxt_task_t *task, void *obj, void *data)
41927Svbart@nginx.com {
42027Svbart@nginx.com     nxt_buf_t         *b;
42127Svbart@nginx.com     nxt_event_conn_t  *c;
42227Svbart@nginx.com 
42327Svbart@nginx.com     c = obj;
42427Svbart@nginx.com 
42527Svbart@nginx.com     nxt_debug(task, "controller conn write");
42627Svbart@nginx.com 
42727Svbart@nginx.com     b = c->write;
42827Svbart@nginx.com 
42927Svbart@nginx.com     if (b->mem.pos != b->mem.free) {
43027Svbart@nginx.com         nxt_event_conn_write(task->thread->engine, c);
43127Svbart@nginx.com         return;
43227Svbart@nginx.com     }
43327Svbart@nginx.com 
43427Svbart@nginx.com     nxt_debug(task, "controller conn write complete");
43527Svbart@nginx.com 
43627Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
43727Svbart@nginx.com }
43827Svbart@nginx.com 
43927Svbart@nginx.com 
44027Svbart@nginx.com static void
44127Svbart@nginx.com nxt_controller_conn_write_error(nxt_task_t *task, void *obj, void *data)
44227Svbart@nginx.com {
44327Svbart@nginx.com     nxt_event_conn_t  *c;
44427Svbart@nginx.com 
44527Svbart@nginx.com     c = obj;
44627Svbart@nginx.com 
44727Svbart@nginx.com     nxt_debug(task, "controller conn write error");
44827Svbart@nginx.com 
44927Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
45027Svbart@nginx.com }
45127Svbart@nginx.com 
45227Svbart@nginx.com 
45327Svbart@nginx.com static void
45427Svbart@nginx.com nxt_controller_conn_write_timeout(nxt_task_t *task, void *obj, void *data)
45527Svbart@nginx.com {
45627Svbart@nginx.com     nxt_timer_t       *ev;
45727Svbart@nginx.com     nxt_event_conn_t  *c;
45827Svbart@nginx.com 
45927Svbart@nginx.com     ev = obj;
46027Svbart@nginx.com 
46127Svbart@nginx.com     c = nxt_event_write_timer_conn(ev);
46227Svbart@nginx.com     c->socket.timedout = 1;
46327Svbart@nginx.com     c->socket.closed = 1;
46427Svbart@nginx.com 
46527Svbart@nginx.com     nxt_debug(task, "controller conn write timeout");
46627Svbart@nginx.com 
46727Svbart@nginx.com     nxt_controller_conn_close(task, c, data);
46820Sigor@sysoev.ru }
46920Sigor@sysoev.ru 
47020Sigor@sysoev.ru 
47120Sigor@sysoev.ru static const nxt_event_conn_state_t  nxt_controller_conn_close_state
47220Sigor@sysoev.ru     nxt_aligned(64) =
47320Sigor@sysoev.ru {
474*56Sigor@sysoev.ru     .ready_handler = nxt_controller_conn_free,
47520Sigor@sysoev.ru };
47620Sigor@sysoev.ru 
47720Sigor@sysoev.ru 
47820Sigor@sysoev.ru static void
47920Sigor@sysoev.ru nxt_controller_conn_close(nxt_task_t *task, void *obj, void *data)
48020Sigor@sysoev.ru {
48120Sigor@sysoev.ru     nxt_event_conn_t  *c;
48220Sigor@sysoev.ru 
48320Sigor@sysoev.ru     c = obj;
48420Sigor@sysoev.ru 
48520Sigor@sysoev.ru     nxt_debug(task, "controller conn close");
48620Sigor@sysoev.ru 
48727Svbart@nginx.com     nxt_queue_remove(&c->link);
48827Svbart@nginx.com 
48920Sigor@sysoev.ru     c->write_state = &nxt_controller_conn_close_state;
49020Sigor@sysoev.ru 
49120Sigor@sysoev.ru     nxt_event_conn_close(task->thread->engine, c);
49220Sigor@sysoev.ru }
49320Sigor@sysoev.ru 
49420Sigor@sysoev.ru 
49520Sigor@sysoev.ru static void
49620Sigor@sysoev.ru nxt_controller_conn_free(nxt_task_t *task, void *obj, void *data)
49720Sigor@sysoev.ru {
49820Sigor@sysoev.ru     nxt_event_conn_t  *c;
49920Sigor@sysoev.ru 
50020Sigor@sysoev.ru     c = obj;
50120Sigor@sysoev.ru 
50220Sigor@sysoev.ru     nxt_debug(task, "controller conn free");
50320Sigor@sysoev.ru 
50420Sigor@sysoev.ru     nxt_mem_pool_destroy(c->mem_pool);
50520Sigor@sysoev.ru 
50620Sigor@sysoev.ru     //nxt_free(c);
50720Sigor@sysoev.ru }
50827Svbart@nginx.com 
50927Svbart@nginx.com 
51027Svbart@nginx.com static nxt_int_t
51127Svbart@nginx.com nxt_controller_request_content_length(void *ctx, nxt_str_t *name,
51227Svbart@nginx.com     nxt_str_t *value, uintptr_t data)
51327Svbart@nginx.com {
51427Svbart@nginx.com     off_t                     length;
51527Svbart@nginx.com     nxt_controller_request_t  *r;
51627Svbart@nginx.com 
51727Svbart@nginx.com     r = ctx;
51827Svbart@nginx.com 
51927Svbart@nginx.com     length = nxt_off_t_parse(value->start, value->length);
52027Svbart@nginx.com 
52127Svbart@nginx.com     if (nxt_fast_path(length > 0)) {
52227Svbart@nginx.com         /* TODO length too big */
52327Svbart@nginx.com 
52427Svbart@nginx.com         r->length = length;
52527Svbart@nginx.com         return NXT_OK;
52627Svbart@nginx.com     }
52727Svbart@nginx.com 
52827Svbart@nginx.com     /* TODO logging (task?) */
52927Svbart@nginx.com 
53027Svbart@nginx.com     return NXT_ERROR;
53127Svbart@nginx.com }
53227Svbart@nginx.com 
53327Svbart@nginx.com 
53427Svbart@nginx.com static void
53527Svbart@nginx.com nxt_controller_process_request(nxt_task_t *task, nxt_event_conn_t *c,
53644Svbart@nginx.com     nxt_controller_request_t *req)
53727Svbart@nginx.com {
53851Svbart@nginx.com     nxt_int_t                  rc;
53946Svbart@nginx.com     nxt_str_t                  path;
54051Svbart@nginx.com     nxt_uint_t                 status;
54151Svbart@nginx.com     nxt_buf_mem_t              *mbuf;
54251Svbart@nginx.com     nxt_mem_pool_t             *mp;
54351Svbart@nginx.com     nxt_conf_json_op_t         *ops;
54446Svbart@nginx.com     nxt_conf_json_value_t      *value;
54544Svbart@nginx.com     nxt_controller_response_t  resp;
54644Svbart@nginx.com 
54751Svbart@nginx.com     static const nxt_str_t empty_obj = nxt_string("{}");
54851Svbart@nginx.com 
54951Svbart@nginx.com     path.start = req->parser.target_start;
55051Svbart@nginx.com 
55151Svbart@nginx.com     if (req->parser.args_start != NULL) {
55251Svbart@nginx.com         path.length = req->parser.args_start - path.start;
55351Svbart@nginx.com 
55451Svbart@nginx.com     } else {
55551Svbart@nginx.com         path.length = req->parser.target_end - path.start;
55651Svbart@nginx.com     }
55751Svbart@nginx.com 
55851Svbart@nginx.com     if (path.length > 1 && path.start[path.length - 1] == '/') {
55951Svbart@nginx.com         path.length--;
56051Svbart@nginx.com     }
56151Svbart@nginx.com 
56244Svbart@nginx.com     nxt_memzero(&resp, sizeof(nxt_controller_response_t));
56344Svbart@nginx.com 
56444Svbart@nginx.com     if (nxt_str_eq(&req->parser.method, "GET", 3)) {
56546Svbart@nginx.com 
56651Svbart@nginx.com         value = nxt_conf_json_get_value(nxt_controller_conf.root, &path);
56751Svbart@nginx.com 
56851Svbart@nginx.com         if (value == NULL) {
56951Svbart@nginx.com             status = 404;
57051Svbart@nginx.com             goto done;
57151Svbart@nginx.com         }
57251Svbart@nginx.com 
57351Svbart@nginx.com         resp.json_value = value;
57446Svbart@nginx.com 
57551Svbart@nginx.com         status = 200;
57651Svbart@nginx.com         goto done;
57751Svbart@nginx.com     }
57851Svbart@nginx.com 
57951Svbart@nginx.com     if (nxt_str_eq(&req->parser.method, "PUT", 3)) {
58046Svbart@nginx.com 
58151Svbart@nginx.com         mp = nxt_mem_pool_create(512);
58251Svbart@nginx.com 
58351Svbart@nginx.com         if (nxt_slow_path(mp == NULL)) {
58451Svbart@nginx.com             status = 500;
58551Svbart@nginx.com             goto done;
58646Svbart@nginx.com         }
58746Svbart@nginx.com 
58851Svbart@nginx.com         mbuf = &c->read->mem;
58951Svbart@nginx.com 
59051Svbart@nginx.com         value = nxt_conf_json_parse(mbuf->pos, mbuf->free - mbuf->pos, mp);
59151Svbart@nginx.com 
59251Svbart@nginx.com         if (value == NULL) {
59351Svbart@nginx.com             nxt_mem_pool_destroy(mp);
59451Svbart@nginx.com             status = 400;
59551Svbart@nginx.com             goto done;
59651Svbart@nginx.com         }
59751Svbart@nginx.com 
59851Svbart@nginx.com         if (path.length != 1) {
59951Svbart@nginx.com             rc = nxt_conf_json_op_compile(nxt_controller_conf.root, value,
60051Svbart@nginx.com                                           &ops, &path, c->mem_pool);
60146Svbart@nginx.com 
60251Svbart@nginx.com             if (rc != NXT_OK) {
60351Svbart@nginx.com                 if (rc == NXT_DECLINED) {
60451Svbart@nginx.com                     status = 404;
60551Svbart@nginx.com                     goto done;
60651Svbart@nginx.com                 }
60746Svbart@nginx.com 
60851Svbart@nginx.com                 status = 500;
60951Svbart@nginx.com                 goto done;
61051Svbart@nginx.com             }
61151Svbart@nginx.com 
61251Svbart@nginx.com             value = nxt_conf_json_clone_value(nxt_controller_conf.root,
61351Svbart@nginx.com                                               ops, mp);
61451Svbart@nginx.com 
61551Svbart@nginx.com             if (nxt_slow_path(value == NULL)) {
61651Svbart@nginx.com                 nxt_mem_pool_destroy(mp);
61751Svbart@nginx.com                 status = 500;
61851Svbart@nginx.com                 goto done;
61951Svbart@nginx.com             }
62046Svbart@nginx.com         }
62144Svbart@nginx.com 
62251Svbart@nginx.com         nxt_mem_pool_destroy(nxt_controller_conf.pool);
62351Svbart@nginx.com 
62451Svbart@nginx.com         nxt_controller_conf.root = value;
62551Svbart@nginx.com         nxt_controller_conf.pool = mp;
62644Svbart@nginx.com 
62751Svbart@nginx.com         nxt_str_set(&resp.json_string, "{ \"success\": \"Updated.\" }");
62851Svbart@nginx.com 
62951Svbart@nginx.com         status = 200;
63051Svbart@nginx.com         goto done;
63151Svbart@nginx.com     }
63227Svbart@nginx.com 
63351Svbart@nginx.com     if (nxt_str_eq(&req->parser.method, "DELETE", 6)) {
63451Svbart@nginx.com 
63551Svbart@nginx.com         if (path.length == 1) {
63651Svbart@nginx.com             mp = nxt_mem_pool_create(128);
63744Svbart@nginx.com 
63851Svbart@nginx.com             if (nxt_slow_path(mp == NULL)) {
63951Svbart@nginx.com                 status = 500;
64051Svbart@nginx.com                 goto done;
64151Svbart@nginx.com             }
64251Svbart@nginx.com 
64351Svbart@nginx.com             value = nxt_conf_json_parse(empty_obj.start, empty_obj.length, mp);
64427Svbart@nginx.com 
64544Svbart@nginx.com         } else {
64651Svbart@nginx.com             rc = nxt_conf_json_op_compile(nxt_controller_conf.root, NULL, &ops,
64751Svbart@nginx.com                                           &path, c->mem_pool);
64851Svbart@nginx.com 
64951Svbart@nginx.com             if (rc != NXT_OK) {
65051Svbart@nginx.com                 if (rc == NXT_DECLINED) {
65151Svbart@nginx.com                     status = 404;
65251Svbart@nginx.com                     goto done;
65351Svbart@nginx.com                 }
65451Svbart@nginx.com 
65551Svbart@nginx.com                 status = 500;
65651Svbart@nginx.com                 goto done;
65751Svbart@nginx.com             }
65851Svbart@nginx.com 
65951Svbart@nginx.com             mp = nxt_mem_pool_create(512);
66051Svbart@nginx.com 
66151Svbart@nginx.com             if (nxt_slow_path(mp == NULL)) {
66251Svbart@nginx.com                 status = 500;
66351Svbart@nginx.com                 goto done;
66451Svbart@nginx.com             }
66551Svbart@nginx.com 
66651Svbart@nginx.com             value = nxt_conf_json_clone_value(nxt_controller_conf.root,
66751Svbart@nginx.com                                               ops, mp);
66851Svbart@nginx.com         }
66951Svbart@nginx.com 
67051Svbart@nginx.com         if (nxt_slow_path(value == NULL)) {
67151Svbart@nginx.com             nxt_mem_pool_destroy(mp);
67251Svbart@nginx.com             status = 500;
67351Svbart@nginx.com             goto done;
67444Svbart@nginx.com         }
67544Svbart@nginx.com 
67651Svbart@nginx.com         nxt_mem_pool_destroy(nxt_controller_conf.pool);
67751Svbart@nginx.com 
67851Svbart@nginx.com         nxt_controller_conf.root = value;
67951Svbart@nginx.com         nxt_controller_conf.pool = mp;
68051Svbart@nginx.com 
68151Svbart@nginx.com         nxt_str_set(&resp.json_string, "{ \"success\": \"Deleted.\" }");
68251Svbart@nginx.com 
68351Svbart@nginx.com         status = 200;
68451Svbart@nginx.com         goto done;
68551Svbart@nginx.com     }
68651Svbart@nginx.com 
68751Svbart@nginx.com     status = 405;
68851Svbart@nginx.com 
68951Svbart@nginx.com done:
69051Svbart@nginx.com 
69151Svbart@nginx.com     switch (status) {
69251Svbart@nginx.com 
69351Svbart@nginx.com     case 200:
69451Svbart@nginx.com         nxt_str_set(&resp.status_line, "200 OK");
69551Svbart@nginx.com         break;
69651Svbart@nginx.com 
69751Svbart@nginx.com     case 400:
69851Svbart@nginx.com         nxt_str_set(&resp.status_line, "400 Bad Request");
69951Svbart@nginx.com         nxt_str_set(&resp.json_string,
70051Svbart@nginx.com                     "{ \"error\": \"Invalid JSON.\" }");
70151Svbart@nginx.com         break;
70251Svbart@nginx.com 
70351Svbart@nginx.com     case 404:
70451Svbart@nginx.com         nxt_str_set(&resp.status_line, "404 Not Found");
70551Svbart@nginx.com         nxt_str_set(&resp.json_string,
70651Svbart@nginx.com                     "{ \"error\": \"Value doesn't exist.\" }");
70751Svbart@nginx.com         break;
70851Svbart@nginx.com 
70951Svbart@nginx.com     case 405:
71044Svbart@nginx.com         nxt_str_set(&resp.status_line, "405 Method Not Allowed");
71151Svbart@nginx.com         nxt_str_set(&resp.json_string, "{ \"error\": \"Invalid method.\" }");
71251Svbart@nginx.com         break;
71351Svbart@nginx.com 
71451Svbart@nginx.com     case 500:
71551Svbart@nginx.com         nxt_str_set(&resp.status_line, "500 Internal Server Error");
71651Svbart@nginx.com         nxt_str_set(&resp.json_string,
71751Svbart@nginx.com                     "{ \"error\": \"Memory allocation failed.\" }");
71851Svbart@nginx.com         break;
71929Svbart@nginx.com     }
72027Svbart@nginx.com 
72144Svbart@nginx.com     if (nxt_controller_response(task, c, &resp) != NXT_OK) {
72244Svbart@nginx.com         nxt_controller_conn_close(task, c, req);
72327Svbart@nginx.com     }
72427Svbart@nginx.com }
72527Svbart@nginx.com 
72627Svbart@nginx.com 
72727Svbart@nginx.com static nxt_int_t
72844Svbart@nginx.com nxt_controller_response(nxt_task_t *task, nxt_event_conn_t *c,
72944Svbart@nginx.com     nxt_controller_response_t *resp)
73033Svbart@nginx.com {
73144Svbart@nginx.com     size_t     size;
73233Svbart@nginx.com     nxt_buf_t  *b;
73333Svbart@nginx.com 
73445Svbart@nginx.com     size = sizeof("HTTP/1.0 " "\r\n\r\n") - 1 + resp->status_line.length;
73533Svbart@nginx.com 
73644Svbart@nginx.com     b = nxt_buf_mem_alloc(c->mem_pool, size, 0);
73733Svbart@nginx.com     if (nxt_slow_path(b == NULL)) {
73844Svbart@nginx.com         return NXT_ERROR;
73933Svbart@nginx.com     }
74033Svbart@nginx.com 
74144Svbart@nginx.com     b->mem.free = nxt_cpymem(b->mem.free, "HTTP/1.0 ", sizeof("HTTP/1.0 ") - 1);
74244Svbart@nginx.com     b->mem.free = nxt_cpymem(b->mem.free, resp->status_line.start,
74344Svbart@nginx.com                              resp->status_line.length);
74444Svbart@nginx.com 
74544Svbart@nginx.com     b->mem.free = nxt_cpymem(b->mem.free, "\r\n\r\n", sizeof("\r\n\r\n") - 1);
74644Svbart@nginx.com 
74745Svbart@nginx.com     b->next = nxt_controller_response_body(resp, c->mem_pool);
74845Svbart@nginx.com 
74945Svbart@nginx.com     if (nxt_slow_path(b->next == NULL)) {
75045Svbart@nginx.com         return NXT_ERROR;
75144Svbart@nginx.com     }
75233Svbart@nginx.com 
75333Svbart@nginx.com     c->write = b;
75444Svbart@nginx.com     c->write_state = &nxt_controller_conn_write_state;
75533Svbart@nginx.com 
75644Svbart@nginx.com     nxt_event_conn_write(task->thread->engine, c);
75733Svbart@nginx.com 
75844Svbart@nginx.com     return NXT_OK;
75933Svbart@nginx.com }
76045Svbart@nginx.com 
76145Svbart@nginx.com 
76245Svbart@nginx.com static nxt_buf_t *
76345Svbart@nginx.com nxt_controller_response_body(nxt_controller_response_t *resp,
76445Svbart@nginx.com     nxt_mem_pool_t *pool)
76545Svbart@nginx.com {
76645Svbart@nginx.com     size_t                  size;
76745Svbart@nginx.com     nxt_buf_t               *b;
76845Svbart@nginx.com     nxt_conf_json_value_t   *value;
76945Svbart@nginx.com     nxt_conf_json_pretty_t  pretty;
77045Svbart@nginx.com 
77145Svbart@nginx.com     if (resp->json_value) {
77245Svbart@nginx.com         value = resp->json_value;
77345Svbart@nginx.com 
77445Svbart@nginx.com     } else {
77545Svbart@nginx.com         value = nxt_conf_json_parse(resp->json_string.start,
77645Svbart@nginx.com                                     resp->json_string.length, pool);
77745Svbart@nginx.com 
77845Svbart@nginx.com         if (nxt_slow_path(value == NULL)) {
77945Svbart@nginx.com             return NULL;
78045Svbart@nginx.com         }
78145Svbart@nginx.com     }
78245Svbart@nginx.com 
78345Svbart@nginx.com     nxt_memzero(&pretty, sizeof(nxt_conf_json_pretty_t));
78445Svbart@nginx.com 
78545Svbart@nginx.com     size = nxt_conf_json_print_value(NULL, value, &pretty) + 2;
78645Svbart@nginx.com 
78745Svbart@nginx.com     b = nxt_buf_mem_alloc(pool, size, 0);
78845Svbart@nginx.com     if (nxt_slow_path(b == NULL)) {
78945Svbart@nginx.com         return NULL;
79045Svbart@nginx.com     }
79145Svbart@nginx.com 
79245Svbart@nginx.com     nxt_memzero(&pretty, sizeof(nxt_conf_json_pretty_t));
79345Svbart@nginx.com 
79445Svbart@nginx.com     b->mem.free = (u_char *) nxt_conf_json_print_value(b->mem.free, value,
79545Svbart@nginx.com                                                        &pretty);
79645Svbart@nginx.com 
79745Svbart@nginx.com     *b->mem.free++ = '\r';
79845Svbart@nginx.com     *b->mem.free++ = '\n';
79945Svbart@nginx.com 
80045Svbart@nginx.com     return b;
80145Svbart@nginx.com }
802