Mercurial > hg > nginx

annotate src/http/ngx_http_upstream_round_robin.h @ 6102:3264b7828f72

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Upstreams: locking.
author Ruslan Ermilov <ru@nginx.com>
date Tue, 14 Apr 2015 19:01:23 +0300
parents c44459611d91
children 79ddb0bdb273
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 /*
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
3 * Copyright (C) Igor Sysoev
4412
d620f497c50f Copyright updated.
Maxim Konovalov <maxim@nginx.com>
parents: 4207
diff changeset
4 * Copyright (C) Nginx, Inc.
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
5 */
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
6
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8 #ifndef _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
9 #define _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
10
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
12 #include <ngx_config.h>
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
13 #include <ngx_core.h>
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
14 #include <ngx_http.h>
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
15
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
16
6100
c44459611d91 Upstream: store peers as a linked list.
Ruslan Ermilov <ru@nginx.com>
parents: 6099
diff changeset
17 typedef struct ngx_http_upstream_rr_peer_s ngx_http_upstream_rr_peer_t;
c44459611d91 Upstream: store peers as a linked list.
Ruslan Ermilov <ru@nginx.com>
parents: 6099
diff changeset
18
c44459611d91 Upstream: store peers as a linked list.
Ruslan Ermilov <ru@nginx.com>
parents: 6099
diff changeset
19 struct ngx_http_upstream_rr_peer_s {
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
20 struct sockaddr *sockaddr;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
21 socklen_t socklen;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
22 ngx_str_t name;
5717
efc84a5723b3 Upstream: generic hash module.
Roman Arutyunyan <arut@nginx.com>
parents: 5136
diff changeset
23 ngx_str_t server;
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
24
1344
8f5b5641966c fair upstream weight balancer
Igor Sysoev <igor@sysoev.ru>
parents: 1284
diff changeset
25 ngx_int_t current_weight;
4621
c90801720a0c Upstream: smooth weighted round-robin balancing.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
26 ngx_int_t effective_weight;
1344
8f5b5641966c fair upstream weight balancer
Igor Sysoev <igor@sysoev.ru>
parents: 1284
diff changeset
27 ngx_int_t weight;
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
28
6099
6ff0ebd6fbf4 Upstream: track the number of active connections to upstreams.
Ruslan Ermilov <ru@nginx.com>
parents: 6038
diff changeset
29 ngx_uint_t conns;
6ff0ebd6fbf4 Upstream: track the number of active connections to upstreams.
Ruslan Ermilov <ru@nginx.com>
parents: 6038
diff changeset
30
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
31 ngx_uint_t fails;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
32 time_t accessed;
4207
4fc91bae6f83 Better recheck of dead upstream servers.
Maxim Dounin <mdounin@mdounin.ru>
parents: 3264
diff changeset
33 time_t checked;
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
34
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
35 ngx_uint_t max_fails;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
36 time_t fail_timeout;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
37
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
38 ngx_uint_t down; /* unsigned down:1; */
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
39
1344
8f5b5641966c fair upstream weight balancer
Igor Sysoev <igor@sysoev.ru>
parents: 1284
diff changeset
40 #if (NGX_HTTP_SSL)
1284
be2b895d31e0 fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents: 954
diff changeset
41 ngx_ssl_session_t *ssl_session; /* local to a process */
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
42 #endif
6100
c44459611d91 Upstream: store peers as a linked list.
Ruslan Ermilov <ru@nginx.com>
parents: 6099
diff changeset
43
c44459611d91 Upstream: store peers as a linked list.
Ruslan Ermilov <ru@nginx.com>
parents: 6099
diff changeset
44 ngx_http_upstream_rr_peer_t *next;
c44459611d91 Upstream: store peers as a linked list.
Ruslan Ermilov <ru@nginx.com>
parents: 6099
diff changeset
45 };
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
46
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
47
1378
0be898896d1a backup upstream servers
Igor Sysoev <igor@sysoev.ru>
parents: 1344
diff changeset
48 typedef struct ngx_http_upstream_rr_peers_s ngx_http_upstream_rr_peers_t;
0be898896d1a backup upstream servers
Igor Sysoev <igor@sysoev.ru>
parents: 1344
diff changeset
49
0be898896d1a backup upstream servers
Igor Sysoev <igor@sysoev.ru>
parents: 1344
diff changeset
50 struct ngx_http_upstream_rr_peers_s {
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
51 ngx_uint_t number;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
52
4655
382c523d253a Upstream: weights support in ip_hash balancer.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4621
diff changeset
53 ngx_uint_t total_weight;
382c523d253a Upstream: weights support in ip_hash balancer.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4621
diff changeset
54
382c523d253a Upstream: weights support in ip_hash balancer.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4621
diff changeset
55 unsigned single:1;
382c523d253a Upstream: weights support in ip_hash balancer.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4621
diff changeset
56 unsigned weighted:1;
382c523d253a Upstream: weights support in ip_hash balancer.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4621
diff changeset
57
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
58 ngx_str_t *name;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
59
1378
0be898896d1a backup upstream servers
Igor Sysoev <igor@sysoev.ru>
parents: 1344
diff changeset
60 ngx_http_upstream_rr_peers_t *next;
0be898896d1a backup upstream servers
Igor Sysoev <igor@sysoev.ru>
parents: 1344
diff changeset
61
6100
c44459611d91 Upstream: store peers as a linked list.
Ruslan Ermilov <ru@nginx.com>
parents: 6099
diff changeset
62 ngx_http_upstream_rr_peer_t *peer;
1378
0be898896d1a backup upstream servers
Igor Sysoev <igor@sysoev.ru>
parents: 1344
diff changeset
63 };
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
64
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
65
6102
3264b7828f72 Upstreams: locking.
Ruslan Ermilov <ru@nginx.com>
parents: 6100
diff changeset
66 #define ngx_http_upstream_rr_peers_rlock(peers)
3264b7828f72 Upstreams: locking.
Ruslan Ermilov <ru@nginx.com>
parents: 6100
diff changeset
67 #define ngx_http_upstream_rr_peers_wlock(peers)
3264b7828f72 Upstreams: locking.
Ruslan Ermilov <ru@nginx.com>
parents: 6100
diff changeset
68 #define ngx_http_upstream_rr_peers_unlock(peers)
3264b7828f72 Upstreams: locking.
Ruslan Ermilov <ru@nginx.com>
parents: 6100
diff changeset
69 #define ngx_http_upstream_rr_peer_lock(peers, peer)
3264b7828f72 Upstreams: locking.
Ruslan Ermilov <ru@nginx.com>
parents: 6100
diff changeset
70 #define ngx_http_upstream_rr_peer_unlock(peers, peer)
3264b7828f72 Upstreams: locking.
Ruslan Ermilov <ru@nginx.com>
parents: 6100
diff changeset
71
3264b7828f72 Upstreams: locking.
Ruslan Ermilov <ru@nginx.com>
parents: 6100
diff changeset
72
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
73 typedef struct {
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
74 ngx_http_upstream_rr_peers_t *peers;
6100
c44459611d91 Upstream: store peers as a linked list.
Ruslan Ermilov <ru@nginx.com>
parents: 6099
diff changeset
75 ngx_http_upstream_rr_peer_t *current;
954
f16424aa5d89 style fix: remove trailing spaces
Igor Sysoev <igor@sysoev.ru>
parents: 884
diff changeset
76 uintptr_t *tried;
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
77 uintptr_t data;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
78 } ngx_http_upstream_rr_peer_data_t;
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
79
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
80
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
81 ngx_int_t ngx_http_upstream_init_round_robin(ngx_conf_t *cf,
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
82 ngx_http_upstream_srv_conf_t *us);
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
83 ngx_int_t ngx_http_upstream_init_round_robin_peer(ngx_http_request_t *r,
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
84 ngx_http_upstream_srv_conf_t *us);
1658
13f8dec720b5 proxy_pass variables support
Igor Sysoev <igor@sysoev.ru>
parents: 1378
diff changeset
85 ngx_int_t ngx_http_upstream_create_round_robin_peer(ngx_http_request_t *r,
13f8dec720b5 proxy_pass variables support
Igor Sysoev <igor@sysoev.ru>
parents: 1378
diff changeset
86 ngx_http_upstream_resolved_t *ur);
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
87 ngx_int_t ngx_http_upstream_get_round_robin_peer(ngx_peer_connection_t *pc,
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
88 void *data);
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
89 void ngx_http_upstream_free_round_robin_peer(ngx_peer_connection_t *pc,
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
90 void *data, ngx_uint_t state);
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
91
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
92 #if (NGX_HTTP_SSL)
1284
be2b895d31e0 fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents: 954
diff changeset
93 ngx_int_t
be2b895d31e0 fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents: 954
diff changeset
94 ngx_http_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc,
be2b895d31e0 fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents: 954
diff changeset
95 void *data);
be2b895d31e0 fix segfault when session was freed twice
Igor Sysoev <igor@sysoev.ru>
parents: 954
diff changeset
96 void ngx_http_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
884
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
97 void *data);
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
98 #endif
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
99
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
100
4d68c486fcb0 upstream choice modules
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
101 #endif /* _NGX_HTTP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_ */