Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_upstream_least_conn_module.c @ 5324:8ef1722143dc
SPDY: do not reject headers with empty value (ticket #396).
A quote from SPDY draft 2 specification: "The length of each name and
value must be greater than zero. A receiver of a zero-length name or
value must send a RST_STREAM with code PROTOCOL error."
But it appears that Chrome browser allows sending requests over SPDY/2
connection using JavaScript that contain headers with empty values.
For better compatibility across SPDY clients and to be compliant with
HTTP, such headers are no longer rejected.
Also, it is worth noting that in SPDY draft 3 the statement has been
changed so that it permits empty values for headers.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Thu, 15 Aug 2013 19:16:09 +0400 |
parents | 1d68b502088c |
children | 575175ebf4b4 |
rev | line source |
---|---|
4654
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
1 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
2 /* |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
3 * Copyright (C) Maxim Dounin |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
4 * Copyright (C) Nginx, Inc. |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
5 */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
6 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
7 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
8 #include <ngx_config.h> |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
9 #include <ngx_core.h> |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
10 #include <ngx_http.h> |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
11 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
12 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
13 typedef struct { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
14 ngx_uint_t *conns; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
15 } ngx_http_upstream_least_conn_conf_t; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
16 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
17 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
18 typedef struct { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
19 /* the round robin data must be first */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
20 ngx_http_upstream_rr_peer_data_t rrp; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
21 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
22 ngx_uint_t *conns; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
23 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
24 ngx_event_get_peer_pt get_rr_peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
25 ngx_event_free_peer_pt free_rr_peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
26 } ngx_http_upstream_lc_peer_data_t; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
27 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
28 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
29 static ngx_int_t ngx_http_upstream_init_least_conn_peer(ngx_http_request_t *r, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
30 ngx_http_upstream_srv_conf_t *us); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
31 static ngx_int_t ngx_http_upstream_get_least_conn_peer( |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
32 ngx_peer_connection_t *pc, void *data); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
33 static void ngx_http_upstream_free_least_conn_peer(ngx_peer_connection_t *pc, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
34 void *data, ngx_uint_t state); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
35 static void *ngx_http_upstream_least_conn_create_conf(ngx_conf_t *cf); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
36 static char *ngx_http_upstream_least_conn(ngx_conf_t *cf, ngx_command_t *cmd, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
37 void *conf); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
38 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
39 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
40 static ngx_command_t ngx_http_upstream_least_conn_commands[] = { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
41 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
42 { ngx_string("least_conn"), |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
43 NGX_HTTP_UPS_CONF|NGX_CONF_NOARGS, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
44 ngx_http_upstream_least_conn, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
45 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
46 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
47 NULL }, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
48 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
49 ngx_null_command |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
50 }; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
51 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
52 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
53 static ngx_http_module_t ngx_http_upstream_least_conn_module_ctx = { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
54 NULL, /* preconfiguration */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
55 NULL, /* postconfiguration */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
56 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
57 NULL, /* create main configuration */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
58 NULL, /* init main configuration */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
59 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
60 ngx_http_upstream_least_conn_create_conf, /* create server configuration */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
61 NULL, /* merge server configuration */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
62 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
63 NULL, /* create location configuration */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
64 NULL /* merge location configuration */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
65 }; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
66 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
67 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
68 ngx_module_t ngx_http_upstream_least_conn_module = { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
69 NGX_MODULE_V1, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
70 &ngx_http_upstream_least_conn_module_ctx, /* module context */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
71 ngx_http_upstream_least_conn_commands, /* module directives */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
72 NGX_HTTP_MODULE, /* module type */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
73 NULL, /* init master */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
74 NULL, /* init module */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
75 NULL, /* init process */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
76 NULL, /* init thread */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
77 NULL, /* exit thread */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
78 NULL, /* exit process */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
79 NULL, /* exit master */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
80 NGX_MODULE_V1_PADDING |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
81 }; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
82 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
83 |
4759
4c36e15651f7
Fixed compilation with -Wmissing-prototypes.
Ruslan Ermilov <ru@nginx.com>
parents:
4656
diff
changeset
|
84 static ngx_int_t |
4654
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
85 ngx_http_upstream_init_least_conn(ngx_conf_t *cf, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
86 ngx_http_upstream_srv_conf_t *us) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
87 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
88 ngx_uint_t n; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
89 ngx_http_upstream_rr_peers_t *peers; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
90 ngx_http_upstream_least_conn_conf_t *lcf; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
91 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
92 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
93 "init least conn"); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
94 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
95 if (ngx_http_upstream_init_round_robin(cf, us) != NGX_OK) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
96 return NGX_ERROR; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
97 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
98 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
99 peers = us->peer.data; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
100 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
101 n = peers->number; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
102 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
103 if (peers->next) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
104 n += peers->next->number; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
105 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
106 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
107 lcf = ngx_http_conf_upstream_srv_conf(us, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
108 ngx_http_upstream_least_conn_module); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
109 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
110 lcf->conns = ngx_pcalloc(cf->pool, sizeof(ngx_uint_t) * n); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
111 if (lcf->conns == NULL) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
112 return NGX_ERROR; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
113 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
114 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
115 us->peer.init = ngx_http_upstream_init_least_conn_peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
116 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
117 return NGX_OK; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
118 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
119 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
120 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
121 static ngx_int_t |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
122 ngx_http_upstream_init_least_conn_peer(ngx_http_request_t *r, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
123 ngx_http_upstream_srv_conf_t *us) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
124 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
125 ngx_http_upstream_lc_peer_data_t *lcp; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
126 ngx_http_upstream_least_conn_conf_t *lcf; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
127 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
128 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
129 "init least conn peer"); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
130 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
131 lcf = ngx_http_conf_upstream_srv_conf(us, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
132 ngx_http_upstream_least_conn_module); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
133 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
134 lcp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_lc_peer_data_t)); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
135 if (lcp == NULL) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
136 return NGX_ERROR; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
137 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
138 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
139 lcp->conns = lcf->conns; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
140 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
141 r->upstream->peer.data = &lcp->rrp; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
142 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
143 if (ngx_http_upstream_init_round_robin_peer(r, us) != NGX_OK) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
144 return NGX_ERROR; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
145 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
146 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
147 r->upstream->peer.get = ngx_http_upstream_get_least_conn_peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
148 r->upstream->peer.free = ngx_http_upstream_free_least_conn_peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
149 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
150 lcp->get_rr_peer = ngx_http_upstream_get_round_robin_peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
151 lcp->free_rr_peer = ngx_http_upstream_free_round_robin_peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
152 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
153 return NGX_OK; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
154 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
155 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
156 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
157 static ngx_int_t |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
158 ngx_http_upstream_get_least_conn_peer(ngx_peer_connection_t *pc, void *data) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
159 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
160 ngx_http_upstream_lc_peer_data_t *lcp = data; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
161 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
162 time_t now; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
163 uintptr_t m; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
164 ngx_int_t rc, total; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
165 ngx_uint_t i, n, p, many; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
166 ngx_http_upstream_rr_peer_t *peer, *best; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
167 ngx_http_upstream_rr_peers_t *peers; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
168 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
169 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
170 "get least conn peer, try: %ui", pc->tries); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
171 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
172 if (lcp->rrp.peers->single) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
173 return lcp->get_rr_peer(pc, &lcp->rrp); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
174 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
175 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
176 pc->cached = 0; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
177 pc->connection = NULL; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
178 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
179 now = ngx_time(); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
180 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
181 peers = lcp->rrp.peers; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
182 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
183 best = NULL; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
184 total = 0; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
185 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
186 #if (NGX_SUPPRESS_WARN) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
187 many = 0; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
188 p = 0; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
189 #endif |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
190 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
191 for (i = 0; i < peers->number; i++) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
192 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
193 n = i / (8 * sizeof(uintptr_t)); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
194 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
195 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
196 if (lcp->rrp.tried[n] & m) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
197 continue; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
198 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
199 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
200 peer = &peers->peer[i]; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
201 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
202 if (peer->down) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
203 continue; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
204 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
205 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
206 if (peer->max_fails |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
207 && peer->fails >= peer->max_fails |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
208 && now - peer->checked <= peer->fail_timeout) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
209 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
210 continue; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
211 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
212 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
213 /* |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
214 * select peer with least number of connections; if there are |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
215 * multiple peers with the same number of connections, select |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
216 * based on round-robin |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
217 */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
218 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
219 if (best == NULL |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
220 || lcp->conns[i] * best->weight < lcp->conns[p] * peer->weight) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
221 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
222 best = peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
223 many = 0; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
224 p = i; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
225 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
226 } else if (lcp->conns[i] * best->weight |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
227 == lcp->conns[p] * peer->weight) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
228 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
229 many = 1; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
230 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
231 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
232 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
233 if (best == NULL) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
234 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
235 "get least conn peer, no peer found"); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
236 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
237 goto failed; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
238 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
239 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
240 if (many) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
241 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
242 "get least conn peer, many"); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
243 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
244 for (i = p; i < peers->number; i++) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
245 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
246 n = i / (8 * sizeof(uintptr_t)); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
247 m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t)); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
248 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
249 if (lcp->rrp.tried[n] & m) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
250 continue; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
251 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
252 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
253 peer = &peers->peer[i]; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
254 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
255 if (peer->down) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
256 continue; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
257 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
258 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
259 if (lcp->conns[i] * best->weight != lcp->conns[p] * peer->weight) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
260 continue; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
261 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
262 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
263 if (peer->max_fails |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
264 && peer->fails >= peer->max_fails |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
265 && now - peer->checked <= peer->fail_timeout) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
266 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
267 continue; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
268 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
269 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
270 peer->current_weight += peer->effective_weight; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
271 total += peer->effective_weight; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
272 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
273 if (peer->effective_weight < peer->weight) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
274 peer->effective_weight++; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
275 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
276 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
277 if (peer->current_weight > best->current_weight) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
278 best = peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
279 p = i; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
280 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
281 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
282 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
283 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
284 best->current_weight -= total; |
5220
1d68b502088c
Upstream: fixed fail_timeout and max_fails > 1.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5173
diff
changeset
|
285 |
1d68b502088c
Upstream: fixed fail_timeout and max_fails > 1.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5173
diff
changeset
|
286 if (now - best->checked > best->fail_timeout) { |
1d68b502088c
Upstream: fixed fail_timeout and max_fails > 1.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5173
diff
changeset
|
287 best->checked = now; |
1d68b502088c
Upstream: fixed fail_timeout and max_fails > 1.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5173
diff
changeset
|
288 } |
4654
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
289 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
290 pc->sockaddr = best->sockaddr; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
291 pc->socklen = best->socklen; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
292 pc->name = &best->name; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
293 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
294 lcp->rrp.current = p; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
295 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
296 n = p / (8 * sizeof(uintptr_t)); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
297 m = (uintptr_t) 1 << p % (8 * sizeof(uintptr_t)); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
298 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
299 lcp->rrp.tried[n] |= m; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
300 lcp->conns[p]++; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
301 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
302 if (pc->tries == 1 && peers->next) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
303 pc->tries += peers->next->number; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
304 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
305 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
306 return NGX_OK; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
307 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
308 failed: |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
309 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
310 if (peers->next) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
311 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
312 "get least conn peer, backup servers"); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
313 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
314 lcp->conns += peers->number; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
315 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
316 lcp->rrp.peers = peers->next; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
317 pc->tries = lcp->rrp.peers->number; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
318 |
4991
a384c60d55f3
Upstream: fixed state resetting when switching to backup servers.
Valentin Bartenev <vbart@nginx.com>
parents:
4759
diff
changeset
|
319 n = (lcp->rrp.peers->number + (8 * sizeof(uintptr_t) - 1)) |
a384c60d55f3
Upstream: fixed state resetting when switching to backup servers.
Valentin Bartenev <vbart@nginx.com>
parents:
4759
diff
changeset
|
320 / (8 * sizeof(uintptr_t)); |
a384c60d55f3
Upstream: fixed state resetting when switching to backup servers.
Valentin Bartenev <vbart@nginx.com>
parents:
4759
diff
changeset
|
321 |
4654
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
322 for (i = 0; i < n; i++) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
323 lcp->rrp.tried[i] = 0; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
324 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
325 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
326 rc = ngx_http_upstream_get_least_conn_peer(pc, lcp); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
327 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
328 if (rc != NGX_BUSY) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
329 return rc; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
330 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
331 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
332 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
333 /* all peers failed, mark them as live for quick recovery */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
334 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
335 for (i = 0; i < peers->number; i++) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
336 peers->peer[i].fails = 0; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
337 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
338 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
339 pc->name = peers->name; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
340 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
341 return NGX_BUSY; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
342 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
343 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
344 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
345 static void |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
346 ngx_http_upstream_free_least_conn_peer(ngx_peer_connection_t *pc, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
347 void *data, ngx_uint_t state) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
348 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
349 ngx_http_upstream_lc_peer_data_t *lcp = data; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
350 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
351 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
352 "free least conn peer %ui %ui", pc->tries, state); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
353 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
354 if (lcp->rrp.peers->single) { |
4656
90ddd4abfdd2
Upstream: least_conn compilation fixes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4654
diff
changeset
|
355 lcp->free_rr_peer(pc, &lcp->rrp, state); |
90ddd4abfdd2
Upstream: least_conn compilation fixes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4654
diff
changeset
|
356 return; |
4654
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
357 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
358 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
359 lcp->conns[lcp->rrp.current]--; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
360 |
4656
90ddd4abfdd2
Upstream: least_conn compilation fixes.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4654
diff
changeset
|
361 lcp->free_rr_peer(pc, &lcp->rrp, state); |
4654
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
362 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
363 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
364 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
365 static void * |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
366 ngx_http_upstream_least_conn_create_conf(ngx_conf_t *cf) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
367 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
368 ngx_http_upstream_least_conn_conf_t *conf; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
369 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
370 conf = ngx_pcalloc(cf->pool, |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
371 sizeof(ngx_http_upstream_least_conn_conf_t)); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
372 if (conf == NULL) { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
373 return NULL; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
374 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
375 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
376 /* |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
377 * set by ngx_pcalloc(): |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
378 * |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
379 * conf->conns = NULL; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
380 */ |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
381 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
382 return conf; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
383 } |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
384 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
385 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
386 static char * |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
387 ngx_http_upstream_least_conn(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
388 { |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
389 ngx_http_upstream_srv_conf_t *uscf; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
390 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
391 uscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_upstream_module); |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
392 |
5173
5373be93c0be
Upstream: warn if multiple non-stackable balancers are installed.
Ruslan Ermilov <ru@nginx.com>
parents:
5133
diff
changeset
|
393 if (uscf->peer.init_upstream) { |
5373be93c0be
Upstream: warn if multiple non-stackable balancers are installed.
Ruslan Ermilov <ru@nginx.com>
parents:
5133
diff
changeset
|
394 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
5373be93c0be
Upstream: warn if multiple non-stackable balancers are installed.
Ruslan Ermilov <ru@nginx.com>
parents:
5133
diff
changeset
|
395 "load balancing method redefined"); |
5373be93c0be
Upstream: warn if multiple non-stackable balancers are installed.
Ruslan Ermilov <ru@nginx.com>
parents:
5133
diff
changeset
|
396 } |
5373be93c0be
Upstream: warn if multiple non-stackable balancers are installed.
Ruslan Ermilov <ru@nginx.com>
parents:
5133
diff
changeset
|
397 |
4654
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
398 uscf->peer.init_upstream = ngx_http_upstream_init_least_conn; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
399 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
400 uscf->flags = NGX_HTTP_UPSTREAM_CREATE |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
401 |NGX_HTTP_UPSTREAM_WEIGHT |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
402 |NGX_HTTP_UPSTREAM_MAX_FAILS |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
403 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
404 |NGX_HTTP_UPSTREAM_DOWN |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
405 |NGX_HTTP_UPSTREAM_BACKUP; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
406 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
407 return NGX_CONF_OK; |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
408 } |