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ngx_http_upstream_round_robin.h
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1 
2 /*
3  * Copyright (C) Igor Sysoev
4  * Copyright (C) Nginx, Inc.
5  */
6 
7 
8 #ifndef _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
9 #define _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
10 
11 
12 #include <ngx_config.h>
13 #include <ngx_core.h>
14 #include <ngx_http.h>
15 
16 
17 typedef struct {
18  struct sockaddr *sockaddr;
19  socklen_t socklen;
20  ngx_str_t name;
21 
22  ngx_int_t current_weight;
23  ngx_int_t effective_weight;
24  ngx_int_t weight;
25 
26  ngx_uint_t fails;
27  time_t accessed;
28  time_t checked;
29 
30  ngx_uint_t max_fails;
31  time_t fail_timeout;
32 
33  ngx_uint_t down; /* unsigned down:1; */
34 
35 #if (NGX_HTTP_SSL)
36  ngx_ssl_session_t *ssl_session; /* local to a process */
37 #endif
38 } ngx_http_upstream_rr_peer_t;
39 
40 
41 typedef struct ngx_http_upstream_rr_peers_s ngx_http_upstream_rr_peers_t;
42 
43 struct ngx_http_upstream_rr_peers_s {
44  ngx_uint_t number;
45 
46  /* ngx_mutex_t *mutex; */
47 
48  ngx_uint_t total_weight;
49 
50  unsigned single:1;
51  unsigned weighted:1;
52 
53  ngx_str_t *name;
54 
55  ngx_http_upstream_rr_peers_t *next;
56 
57  ngx_http_upstream_rr_peer_t peer[1];
58 };
59 
60 
61 typedef struct {
62  ngx_http_upstream_rr_peers_t *peers;
63  ngx_uint_t current;
64  uintptr_t *tried;
65  uintptr_t data;
66 } ngx_http_upstream_rr_peer_data_t;
67 
68 
69 ngx_int_t ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
70  ngx_http_upstream_srv_conf_t *us);
71 ngx_int_t ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r,
72  ngx_http_upstream_srv_conf_t *us);
73 ngx_int_t ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r,
74  ngx_http_upstream_resolved_t *ur);
75 ngx_int_t ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc,
76  void *data);
77 void ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc,
78  void *data, ngx_uint_t state);
79 
80 #if (NGX_HTTP_SSL)
81 ngx_int_t
82  ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc,
83  void *data);
84 void ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
85  void *data);
86 #endif
87 
88 
89 #endif /* _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_ */
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