Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_upstream_least_conn_module.c @ 5543:5730c0193842
Mp4: skip tracks shorter than seek position (ticket #414).
Mp4 module does not check movie and track durations when reading
file. Instead it generates errors when track metadata is shorter
than seek position. Now such tracks are skipped and movie duration
check is performed at file read stage.
author | Roman Arutyunyan <arut@nginx.com> |
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date | Wed, 29 Jan 2014 13:33:45 +0400 |
parents | 1d68b502088c |
children | 575175ebf4b4 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Maxim Dounin |
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4 * Copyright (C) Nginx, Inc. |
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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11 |
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12 |
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13 typedef struct { |
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14 ngx_uint_t *conns; |
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15 } ngx_http_upstream_least_conn_conf_t; |
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16 |
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17 |
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18 typedef struct { |
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19 /* the round robin data must be first */ |
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20 ngx_http_upstream_rr_peer_data_t rrp; |
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21 |
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22 ngx_uint_t *conns; |
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23 |
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24 ngx_event_get_peer_pt get_rr_peer; |
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25 ngx_event_free_peer_pt free_rr_peer; |
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26 } ngx_http_upstream_lc_peer_data_t; |
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27 |
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28 |
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29 static ngx_int_t ngx_http_upstream_init_least_conn_peer(ngx_http_request_t *r, |
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30 ngx_http_upstream_srv_conf_t *us); |
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31 static ngx_int_t ngx_http_upstream_get_least_conn_peer( |
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32 ngx_peer_connection_t *pc, void *data); |
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33 static void ngx_http_upstream_free_least_conn_peer(ngx_peer_connection_t *pc, |
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34 void *data, ngx_uint_t state); |
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35 static void *ngx_http_upstream_least_conn_create_conf(ngx_conf_t *cf); |
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36 static char *ngx_http_upstream_least_conn(ngx_conf_t *cf, ngx_command_t *cmd, |
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37 void *conf); |
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38 |
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39 |
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40 static ngx_command_t ngx_http_upstream_least_conn_commands[] = { |
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41 |
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42 { ngx_string("least_conn"), |
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43 NGX_HTTP_UPS_CONF|NGX_CONF_NOARGS, |
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44 ngx_http_upstream_least_conn, |
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45 0, |
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46 0, |
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47 NULL }, |
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48 |
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49 ngx_null_command |
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50 }; |
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51 |
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52 |
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53 static ngx_http_module_t ngx_http_upstream_least_conn_module_ctx = { |
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54 NULL, /* preconfiguration */ |
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55 NULL, /* postconfiguration */ |
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56 |
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57 NULL, /* create main configuration */ |
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58 NULL, /* init main configuration */ |
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59 |
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60 ngx_http_upstream_least_conn_create_conf, /* create server configuration */ |
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61 NULL, /* merge server configuration */ |
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62 |
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63 NULL, /* create location configuration */ |
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64 NULL /* merge location configuration */ |
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65 }; |
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66 |
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67 |
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68 ngx_module_t ngx_http_upstream_least_conn_module = { |
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69 NGX_MODULE_V1, |
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70 &ngx_http_upstream_least_conn_module_ctx, /* module context */ |
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71 ngx_http_upstream_least_conn_commands, /* module directives */ |
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72 NGX_HTTP_MODULE, /* module type */ |
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73 NULL, /* init master */ |
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74 NULL, /* init module */ |
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75 NULL, /* init process */ |
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76 NULL, /* init thread */ |
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77 NULL, /* exit thread */ |
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78 NULL, /* exit process */ |
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79 NULL, /* exit master */ |
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80 NGX_MODULE_V1_PADDING |
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81 }; |
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82 |
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83 |
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84 static ngx_int_t |
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85 ngx_http_upstream_init_least_conn(ngx_conf_t *cf, |
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86 ngx_http_upstream_srv_conf_t *us) |
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87 { |
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88 ngx_uint_t n; |
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89 ngx_http_upstream_rr_peers_t *peers; |
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90 ngx_http_upstream_least_conn_conf_t *lcf; |
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91 |
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92 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, |
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93 "init least conn"); |
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94 |
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95 if (ngx_http_upstream_init_round_robin(cf, us) != NGX_OK) { |
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96 return NGX_ERROR; |
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97 } |
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98 |
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99 peers = us->peer.data; |
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100 |
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101 n = peers->number; |
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102 |
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103 if (peers->next) { |
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104 n += peers->next->number; |
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105 } |
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106 |
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107 lcf = ngx_http_conf_upstream_srv_conf(us, |
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108 ngx_http_upstream_least_conn_module); |
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109 |
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110 lcf->conns = ngx_pcalloc(cf->pool, sizeof(ngx_uint_t) * n); |
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111 if (lcf->conns == NULL) { |
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112 return NGX_ERROR; |
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113 } |
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114 |
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115 us->peer.init = ngx_http_upstream_init_least_conn_peer; |
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116 |
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117 return NGX_OK; |
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118 } |
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119 |
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120 |
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121 static ngx_int_t |
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Upstream: least_conn balancer module.
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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
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|
130 |
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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); |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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|
133 |
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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)); |
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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; |
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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 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
139 lcp->conns = lcf->conns; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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changeset
|
140 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
141 r->upstream->peer.data = &lcp->rrp; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
142 |
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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:
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|
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 |
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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; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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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:
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|
149 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
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changeset
|
150 lcp->get_rr_peer = ngx_http_upstream_get_round_robin_peer; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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changeset
|
151 lcp->free_rr_peer = ngx_http_upstream_free_round_robin_peer; |
a2ca3a6ee680
Upstream: least_conn balancer module.
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parents:
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|
152 |
a2ca3a6ee680
Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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|
153 return NGX_OK; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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|
154 } |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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|
155 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
156 |
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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:
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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:
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changeset
|
159 { |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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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 |
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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; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
166 ngx_http_upstream_rr_peer_t *peer, *best; |
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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 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
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changeset
|
169 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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changeset
|
170 "get least conn peer, try: %ui", pc->tries); |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
171 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
172 if (lcp->rrp.peers->single) { |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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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 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
176 pc->cached = 0; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
177 pc->connection = NULL; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
178 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
179 now = ngx_time(); |
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Upstream: least_conn balancer module.
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parents:
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|
180 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
181 peers = lcp->rrp.peers; |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
182 |
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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 |
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Upstream: least_conn balancer module.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff
changeset
|
186 #if (NGX_SUPPRESS_WARN) |
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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 |
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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 |
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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 |
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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 |
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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
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370 conf = ngx_pcalloc(cf->pool, |
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371 sizeof(ngx_http_upstream_least_conn_conf_t)); |
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372 if (conf == NULL) { |
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373 return NULL; |
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374 } |
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375 |
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376 /* |
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377 * set by ngx_pcalloc(): |
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378 * |
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379 * conf->conns = NULL; |
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380 */ |
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381 |
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382 return conf; |
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383 } |
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384 |
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385 |
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386 static char * |
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387 ngx_http_upstream_least_conn(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
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388 { |
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389 ngx_http_upstream_srv_conf_t *uscf; |
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390 |
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391 uscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_upstream_module); |
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392 |
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393 if (uscf->peer.init_upstream) { |
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394 ngx_conf_log_error(NGX_LOG_WARN, cf, 0, |
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395 "load balancing method redefined"); |
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396 } |
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397 |
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398 uscf->peer.init_upstream = ngx_http_upstream_init_least_conn; |
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399 |
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400 uscf->flags = NGX_HTTP_UPSTREAM_CREATE |
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401 |NGX_HTTP_UPSTREAM_WEIGHT |
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402 |NGX_HTTP_UPSTREAM_MAX_FAILS |
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403 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT |
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404 |NGX_HTTP_UPSTREAM_DOWN |
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405 |NGX_HTTP_UPSTREAM_BACKUP; |
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406 |
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407 return NGX_CONF_OK; |
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408 } |