annotate ngx_http_upstream_keepalive_module.c @ 31:78fd926c306d

Keepalive: reduce indentation, no functional changes.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 31 Aug 2011 06:03:30 +0400
parents c5b498c5aa3c
children 9aa0d263f2a7
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2 /*
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3 * Copyright (C) Maxim Dounin
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4 */
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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12 typedef struct {
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13 ngx_uint_t max_cached;
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14 ngx_uint_t single; /* unsigned:1 */
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16 ngx_queue_t cache;
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17 ngx_queue_t free;
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19 ngx_http_upstream_init_pt original_init_upstream;
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20 ngx_http_upstream_init_peer_pt original_init_peer;
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22 } ngx_http_upstream_keepalive_srv_conf_t;
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25 typedef struct {
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26 ngx_http_upstream_keepalive_srv_conf_t *conf;
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27
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28 ngx_http_upstream_t *upstream;
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30 void *data;
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32 ngx_event_get_peer_pt original_get_peer;
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33 ngx_event_free_peer_pt original_free_peer;
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34
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35 #if (NGX_HTTP_SSL)
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36 ngx_event_set_peer_session_pt original_set_session;
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37 ngx_event_save_peer_session_pt original_save_session;
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38 #endif
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39
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40 ngx_uint_t failed; /* unsigned:1 */
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41
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42 } ngx_http_upstream_keepalive_peer_data_t;
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45 typedef struct {
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46 ngx_http_upstream_keepalive_srv_conf_t *conf;
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47
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48 ngx_queue_t queue;
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49 ngx_connection_t *connection;
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50
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51 socklen_t socklen;
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52 struct sockaddr_storage sockaddr;
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53
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54 } ngx_http_upstream_keepalive_cache_t;
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56
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57 static ngx_int_t ngx_http_upstream_init_keepalive_peer(ngx_http_request_t *r,
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58 ngx_http_upstream_srv_conf_t *us);
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59 static ngx_int_t ngx_http_upstream_get_keepalive_peer(ngx_peer_connection_t *pc,
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60 void *data);
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61 static void ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc,
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62 void *data, ngx_uint_t state);
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63
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64 static void ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev);
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65 static void ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev);
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66
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67 #if (NGX_HTTP_SSL)
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68 static ngx_int_t ngx_http_upstream_keepalive_set_session(
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69 ngx_peer_connection_t *pc, void *data);
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70 static void ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc,
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71 void *data);
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72 #endif
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73
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74 static void *ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf);
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75 static char *ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd,
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76 void *conf);
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77
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79 static ngx_command_t ngx_http_upstream_keepalive_commands[] = {
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80
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81 { ngx_string("keepalive"),
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82 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE12,
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83 ngx_http_upstream_keepalive,
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84 0,
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85 0,
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86 NULL },
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87
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88 ngx_null_command
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89 };
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92 static ngx_http_module_t ngx_http_upstream_keepalive_module_ctx = {
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93 NULL, /* preconfiguration */
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94 NULL, /* postconfiguration */
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95
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96 NULL, /* create main configuration */
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97 NULL, /* init main configuration */
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98
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99 ngx_http_upstream_keepalive_create_conf, /* create server configuration */
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100 NULL, /* merge server configuration */
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101
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102 NULL, /* create location configuration */
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103 NULL /* merge location configuration */
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104 };
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106
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107 ngx_module_t ngx_http_upstream_keepalive_module = {
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108 NGX_MODULE_V1,
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109 &ngx_http_upstream_keepalive_module_ctx, /* module context */
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110 ngx_http_upstream_keepalive_commands, /* module directives */
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111 NGX_HTTP_MODULE, /* module type */
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112 NULL, /* init master */
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113 NULL, /* init module */
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114 NULL, /* init process */
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115 NULL, /* init thread */
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116 NULL, /* exit thread */
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117 NULL, /* exit process */
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118 NULL, /* exit master */
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119 NGX_MODULE_V1_PADDING
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120 };
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121
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122
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123 ngx_int_t
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124 ngx_http_upstream_init_keepalive(ngx_conf_t *cf,
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125 ngx_http_upstream_srv_conf_t *us)
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126 {
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127 ngx_uint_t i;
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128 ngx_http_upstream_keepalive_srv_conf_t *kcf;
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129 ngx_http_upstream_keepalive_cache_t *cached;
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130
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131 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0,
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132 "init keepalive");
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133
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134 kcf = ngx_http_conf_upstream_srv_conf(us,
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135 ngx_http_upstream_keepalive_module);
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136
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137 if (kcf->original_init_upstream(cf, us) != NGX_OK) {
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138 return NGX_ERROR;
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139 }
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140
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141 kcf->original_init_peer = us->peer.init;
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142
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143 us->peer.init = ngx_http_upstream_init_keepalive_peer;
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144
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diff changeset
145 /* allocate cache items and add to free queue */
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diff changeset
146
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parents: 1
diff changeset
147 cached = ngx_pcalloc(cf->pool,
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diff changeset
148 sizeof(ngx_http_upstream_keepalive_cache_t) * kcf->max_cached);
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diff changeset
149 if (cached == NULL) {
1
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diff changeset
150 return NGX_ERROR;
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parents: 0
diff changeset
151 }
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152
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diff changeset
153 ngx_queue_init(&kcf->cache);
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diff changeset
154 ngx_queue_init(&kcf->free);
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parents: 1
diff changeset
155
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diff changeset
156 for (i = 0; i < kcf->max_cached; i++) {
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diff changeset
157 ngx_queue_insert_head(&kcf->free, &cached[i].queue);
8
565939797f5c Keepalive: fix connection closing and avoid for loop there.
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diff changeset
158 cached[i].conf = kcf;
2
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diff changeset
159 }
1
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160
0
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161 return NGX_OK;
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162 }
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163
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164
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165 static ngx_int_t
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166 ngx_http_upstream_init_keepalive_peer(ngx_http_request_t *r,
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167 ngx_http_upstream_srv_conf_t *us)
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168 {
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169 ngx_http_upstream_keepalive_peer_data_t *kp;
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170 ngx_http_upstream_keepalive_srv_conf_t *kcf;
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171
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172 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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173 "init keepalive peer");
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174
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175 kcf = ngx_http_conf_upstream_srv_conf(us,
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176 ngx_http_upstream_keepalive_module);
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177
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178 kp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_keepalive_peer_data_t));
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179 if (kp == NULL) {
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180 return NGX_ERROR;
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181 }
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182
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183 if (kcf->original_init_peer(r, us) != NGX_OK) {
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184 return NGX_ERROR;
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185 }
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186
1
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187 kp->conf = kcf;
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diff changeset
188 kp->upstream = r->upstream;
0
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189 kp->data = r->upstream->peer.data;
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190 kp->original_get_peer = r->upstream->peer.get;
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191 kp->original_free_peer = r->upstream->peer.free;
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192
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193 r->upstream->peer.data = kp;
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194 r->upstream->peer.get = ngx_http_upstream_get_keepalive_peer;
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195 r->upstream->peer.free = ngx_http_upstream_free_keepalive_peer;
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196
29
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
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diff changeset
197 #if (NGX_HTTP_SSL)
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diff changeset
198 kp->original_set_session = r->upstream->peer.set_session;
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diff changeset
199 kp->original_save_session = r->upstream->peer.save_session;
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diff changeset
200 r->upstream->peer.set_session = ngx_http_upstream_keepalive_set_session;
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diff changeset
201 r->upstream->peer.save_session = ngx_http_upstream_keepalive_save_session;
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diff changeset
202 #endif
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diff changeset
203
0
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204 return NGX_OK;
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205 }
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206
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207
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208 static ngx_int_t
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diff changeset
209 ngx_http_upstream_get_keepalive_peer(ngx_peer_connection_t *pc, void *data)
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diff changeset
210 {
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211 ngx_http_upstream_keepalive_peer_data_t *kp = data;
2
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212 ngx_http_upstream_keepalive_cache_t *item;
0
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213
6
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diff changeset
214 ngx_int_t rc;
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parents: 5
diff changeset
215 ngx_queue_t *q, *cache;
5
e7d1b49e0611 Keepalive: style.
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parents: 4
diff changeset
216 ngx_connection_t *c;
1
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parents: 0
diff changeset
217
0
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diff changeset
218 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0,
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parents:
diff changeset
219 "get keepalive peer");
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220
11
15530a464dba Keepalive: don't cache invalid connections.
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diff changeset
221 kp->failed = 0;
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diff changeset
222
6
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diff changeset
223 /* single pool of cached connections */
1
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diff changeset
224
6
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parents: 5
diff changeset
225 if (kp->conf->single && !ngx_queue_empty(&kp->conf->cache)) {
2
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parents: 1
diff changeset
226
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diff changeset
227 q = ngx_queue_head(&kp->conf->cache);
1
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parents: 0
diff changeset
228
2
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parents: 1
diff changeset
229 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue);
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parents: 1
diff changeset
230 c = item->connection;
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parents: 1
diff changeset
231
28
baf671881a8d Keepalive: log connection used.
Maxim Dounin <mdounin@mdounin.ru>
parents: 26
diff changeset
232 ngx_queue_remove(q);
2
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parents: 1
diff changeset
233 ngx_queue_insert_head(&kp->conf->free, q);
1
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parents: 0
diff changeset
234
28
baf671881a8d Keepalive: log connection used.
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parents: 26
diff changeset
235 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
baf671881a8d Keepalive: log connection used.
Maxim Dounin <mdounin@mdounin.ru>
parents: 26
diff changeset
236 "get keepalive peer: using connection %p", c);
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Maxim Dounin <mdounin@mdounin.ru>
parents: 26
diff changeset
237
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
238 c->idle = 0;
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Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
239 c->log = pc->log;
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Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
240 c->read->log = pc->log;
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Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
241 c->write->log = pc->log;
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parents: 0
diff changeset
242
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parents: 0
diff changeset
243 pc->connection = c;
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Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
244 pc->cached = 1;
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parents: 0
diff changeset
245
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Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
246 return NGX_DONE;
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Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
247 }
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parents: 0
diff changeset
248
6
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parents: 5
diff changeset
249 rc = kp->original_get_peer(pc, kp->data);
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parents: 5
diff changeset
250
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parents: 5
diff changeset
251 if (kp->conf->single || rc != NGX_OK) {
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parents: 5
diff changeset
252 return rc;
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Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
253 }
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parents: 5
diff changeset
254
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
255 /* search cache for suitable connection */
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parents: 5
diff changeset
256
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
257 cache = &kp->conf->cache;
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parents: 5
diff changeset
258
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
259 for (q = ngx_queue_head(cache);
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Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
260 q != ngx_queue_sentinel(cache);
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Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
261 q = ngx_queue_next(q))
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
262 {
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parents: 5
diff changeset
263 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue);
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parents: 5
diff changeset
264 c = item->connection;
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Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
265
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
266 if (ngx_memn2cmp((u_char *) &item->sockaddr, (u_char *) pc->sockaddr,
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
267 item->socklen, pc->socklen)
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Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
268 == 0)
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Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
269 {
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Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
270 ngx_queue_remove(q);
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parents: 5
diff changeset
271 ngx_queue_insert_head(&kp->conf->free, q);
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parents: 5
diff changeset
272
28
baf671881a8d Keepalive: log connection used.
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parents: 26
diff changeset
273 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
baf671881a8d Keepalive: log connection used.
Maxim Dounin <mdounin@mdounin.ru>
parents: 26
diff changeset
274 "get keepalive peer: using connection %p", c);
baf671881a8d Keepalive: log connection used.
Maxim Dounin <mdounin@mdounin.ru>
parents: 26
diff changeset
275
6
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
276 c->idle = 0;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
277 c->log = pc->log;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
278 c->read->log = pc->log;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
279 c->write->log = pc->log;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
280
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
281 pc->connection = c;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
282 pc->cached = 1;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
283
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
284 return NGX_DONE;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
285 }
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
286 }
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
287
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
288 return NGX_OK;
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
289 }
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
290
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
291
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
292 static void
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
293 ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc, void *data,
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
294 ngx_uint_t state)
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
295 {
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
296 ngx_http_upstream_keepalive_peer_data_t *kp = data;
2
8545bbda9e4b Keepalive: reimplement using queues.
Maxim Dounin <mdounin@mdounin.ru>
parents: 1
diff changeset
297 ngx_http_upstream_keepalive_cache_t *item;
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
298
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
299 #if !(NGX_UPSTREAM_KEEPALIVE_PATCHED)
11
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
300 ngx_uint_t status;
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
301 #endif
11
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
302 ngx_queue_t *q;
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
303 ngx_connection_t *c;
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
304 ngx_http_upstream_t *u;
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
305
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
306 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0,
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
307 "free keepalive peer");
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
308
11
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
309 /* remember failed state - peer.free() may be called more than once */
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
310
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
311 if (state & NGX_PEER_FAILED) {
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
312 kp->failed = 1;
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
313 }
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
314
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
315 /*
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
316 * cache valid connections
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
317 *
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
318 * For memcached this means status either 404 or 200. For status 200 we
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
319 * should also check if all response body was read (u->length == 0) and
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
320 * make sure that u->length is valid (we use u->header_sent flag to test
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
321 * this). Memcached is the only supported protocol for now.
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
322 *
30
c5b498c5aa3c Keepalive: update comments, style.
Maxim Dounin <mdounin@mdounin.ru>
parents: 29
diff changeset
323 * With experimental patches we are able to cache other connections as
c5b498c5aa3c Keepalive: update comments, style.
Maxim Dounin <mdounin@mdounin.ru>
parents: 29
diff changeset
324 * well. Connection status is signalled via u->keepalive flag.
11
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
325 */
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
326
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
327 u = kp->upstream;
26
cb15f6f4d820 Keepalive: don't cache timed out connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 24
diff changeset
328 c = pc->connection;
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
329
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
330 if (kp->failed
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
331 || c == NULL
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
332 || c->read->timedout
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
333 || c->write->timedout)
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
334 {
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
335 goto invalid;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
336 }
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
337
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
338 #if (NGX_UPSTREAM_KEEPALIVE_PATCHED)
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
339
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
340 if (!u->keepalive) {
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
341 goto invalid;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
342 }
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
343
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
344 #else
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
345
11
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
346 status = u->headers_in.status_n;
15530a464dba Keepalive: don't cache invalid connections.
Maxim Dounin <mdounin@mdounin.ru>
parents: 10
diff changeset
347
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
348 if (!(status == NGX_HTTP_NOT_FOUND
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
349 || (status == NGX_HTTP_OK && u->header_sent && u->length == 0)))
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
350 {
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
351 goto invalid;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
352 }
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
353
14
28af4b0b32c1 Keepalive: experimental fastcgi support.
Maxim Dounin <mdounin@mdounin.ru>
parents: 11
diff changeset
354 #endif
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
355
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
356 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0,
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
357 "free keepalive peer: saving connection %p", c);
10
06bd0e50e696 Keepalive: log saving connection.
Maxim Dounin <mdounin@mdounin.ru>
parents: 8
diff changeset
358
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
359 if (ngx_queue_empty(&kp->conf->free)) {
3
42e64900483b Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents: 2
diff changeset
360
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
361 q = ngx_queue_last(&kp->conf->cache);
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
362 ngx_queue_remove(q);
3
42e64900483b Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents: 2
diff changeset
363
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
364 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue);
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
365
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
366 ngx_close_connection(item->connection);
3
42e64900483b Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents: 2
diff changeset
367
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
368 } else {
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
369 q = ngx_queue_head(&kp->conf->free);
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
370 ngx_queue_remove(q);
3
42e64900483b Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents: 2
diff changeset
371
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
372 item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue);
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
373 }
3
42e64900483b Keepalive: always save connections to cache.
Maxim Dounin <mdounin@mdounin.ru>
parents: 2
diff changeset
374
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
375 item->connection = c;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
376 ngx_queue_insert_head(&kp->conf->cache, q);
2
8545bbda9e4b Keepalive: reimplement using queues.
Maxim Dounin <mdounin@mdounin.ru>
parents: 1
diff changeset
377
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
378 pc->connection = NULL;
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
379
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
380 if (c->read->timer_set) {
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
381 ngx_del_timer(c->read);
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
382 }
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
383 if (c->write->timer_set) {
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
384 ngx_del_timer(c->write);
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
385 }
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
386
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
387 c->write->handler = ngx_http_upstream_keepalive_dummy_handler;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
388 c->read->handler = ngx_http_upstream_keepalive_close_handler;
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
389
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
390 c->data = item;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
391 c->idle = 1;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
392 c->log = ngx_cycle->log;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
393 c->read->log = ngx_cycle->log;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
394 c->write->log = ngx_cycle->log;
6
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
395
31
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
396 item->socklen = pc->socklen;
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
397 ngx_memcpy(&item->sockaddr, pc->sockaddr, pc->socklen);
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
398
78fd926c306d Keepalive: reduce indentation, no functional changes.
Maxim Dounin <mdounin@mdounin.ru>
parents: 30
diff changeset
399 invalid:
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
400
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
401 return kp->original_free_peer(pc, kp->data, state);
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
402 }
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
403
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
404
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
405 static void
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
406 ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev)
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
407 {
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
408 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0,
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
409 "keepalive dummy handler");
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
410 }
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
411
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
412
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
413 static void
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
414 ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev)
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
415 {
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
416 ngx_http_upstream_keepalive_srv_conf_t *conf;
2
8545bbda9e4b Keepalive: reimplement using queues.
Maxim Dounin <mdounin@mdounin.ru>
parents: 1
diff changeset
417 ngx_http_upstream_keepalive_cache_t *item;
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
418
21
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
419 int n;
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
420 char buf[1];
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
421 ngx_connection_t *c;
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
422
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
423 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0,
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
424 "keepalive close handler");
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
425
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
426 c = ev->data;
21
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
427
24
2ee28064a04a Keepalive: correctly close connections on gracefull shutdown.
Maxim Dounin <mdounin@mdounin.ru>
parents: 21
diff changeset
428 if (c->close) {
2ee28064a04a Keepalive: correctly close connections on gracefull shutdown.
Maxim Dounin <mdounin@mdounin.ru>
parents: 21
diff changeset
429 goto close;
2ee28064a04a Keepalive: correctly close connections on gracefull shutdown.
Maxim Dounin <mdounin@mdounin.ru>
parents: 21
diff changeset
430 }
2ee28064a04a Keepalive: correctly close connections on gracefull shutdown.
Maxim Dounin <mdounin@mdounin.ru>
parents: 21
diff changeset
431
21
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
432 n = recv(c->fd, buf, 1, MSG_PEEK);
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
433
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
434 if (n == -1 && ngx_socket_errno == NGX_EAGAIN) {
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
435 /* stale event */
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
436
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
437 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
438 goto close;
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
439 }
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
440
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
441 return;
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
442 }
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
443
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
444 close:
9a4ee6fe1c6d Keepalive: avoid closing upstream connection on stale events.
Maxim Dounin <mdounin@mdounin.ru>
parents: 18
diff changeset
445
8
565939797f5c Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6
diff changeset
446 item = c->data;
565939797f5c Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6
diff changeset
447 conf = item->conf;
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
448
8
565939797f5c Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6
diff changeset
449 ngx_queue_remove(&item->queue);
565939797f5c Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6
diff changeset
450 ngx_close_connection(item->connection);
565939797f5c Keepalive: fix connection closing and avoid for loop there.
Maxim Dounin <mdounin@mdounin.ru>
parents: 6
diff changeset
451 ngx_queue_insert_head(&conf->free, &item->queue);
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
452 }
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
453
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
454
29
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
455 #if (NGX_HTTP_SSL)
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
456
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
457 static ngx_int_t
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
458 ngx_http_upstream_keepalive_set_session(ngx_peer_connection_t *pc, void *data)
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
459 {
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
460 ngx_http_upstream_keepalive_peer_data_t *kp = data;
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
461
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
462 return kp->original_set_session(pc, kp->data);
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
463 }
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
464
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
465
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
466 static void
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
467 ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc, void *data)
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
468 {
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
469 ngx_http_upstream_keepalive_peer_data_t *kp = data;
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
470
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
471 kp->original_save_session(pc, kp->data);
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
472 return;
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
473 }
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
474
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
475 #endif
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
476
c7c4b2d68fdf Keepalive: set_session and save_session callbacks.
Maxim Dounin <mdounin@mdounin.ru>
parents: 28
diff changeset
477
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
478 static void *
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
479 ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf)
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
480 {
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
481 ngx_http_upstream_keepalive_srv_conf_t *conf;
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
482
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
483 conf = ngx_pcalloc(cf->pool,
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
484 sizeof(ngx_http_upstream_keepalive_srv_conf_t));
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
485 if (conf == NULL) {
18
2054159546d0 Keepalive: fix create_conf to return NULL on errors.
Maxim Dounin <mdounin@mdounin.ru>
parents: 14
diff changeset
486 return NULL;
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
487 }
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
488
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
489 /*
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
490 * set by ngx_pcalloc():
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
491 *
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
492 * conf->original_init_upstream = NULL;
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
493 * conf->original_init_peer = NULL;
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
494 */
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
495
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
496 conf->max_cached = 1;
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
497
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
498 return conf;
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
499 }
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
500
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
501
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
502 static char *
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
503 ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
504 {
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
505 ngx_http_upstream_srv_conf_t *uscf;
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
506 ngx_http_upstream_keepalive_srv_conf_t *kcf;
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
507
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
508 ngx_int_t n;
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
509 ngx_str_t *value;
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
510 ngx_uint_t i;
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
511
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
512 uscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_upstream_module);
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
513
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
514 kcf = ngx_http_conf_upstream_srv_conf(uscf,
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
515 ngx_http_upstream_keepalive_module);
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
516
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
517 kcf->original_init_upstream = uscf->peer.init_upstream
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
518 ? uscf->peer.init_upstream
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
519 : ngx_http_upstream_init_round_robin;
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
520
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
521 uscf->peer.init_upstream = ngx_http_upstream_init_keepalive;
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
522
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
523 /* read options */
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
524
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
525 value = cf->args->elts;
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
526
6
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
527 n = ngx_atoi(value[1].data, value[1].len);
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
528
6
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
529 if (n == NGX_ERROR || n == 0) {
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
530 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
531 "invalid value \"%V\" in \"%V\" directive",
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
532 &value[1], &cmd->name);
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
533 return NGX_CONF_ERROR;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
534 }
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
535
6
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
536 kcf->max_cached = n;
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
537
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
538 for (i = 2; i < cf->args->nelts; i++) {
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
539
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
540 if (ngx_strcmp(value[i].data, "single") == 0) {
bef88ba0b378 Keepalive: distinguish between upstream servers by default.
Maxim Dounin <mdounin@mdounin.ru>
parents: 5
diff changeset
541 kcf->single = 1;
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
542 continue;
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
543 }
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
544
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
545 goto invalid;
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
546 }
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
547
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
548 return NGX_CONF_OK;
1
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
549
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
550 invalid:
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
551
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
552 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
553 "invalid parameter \"%V\"", &value[i]);
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
554
ca955a7f651b Keepalive: common cache for all backends.
Maxim Dounin <mdounin@mdounin.ru>
parents: 0
diff changeset
555 return NGX_CONF_ERROR;
0
725ee11164f3 Keepalive upstream balancer: transparent skeleton.
Maxim Dounin <mdounin@mdounin.ru>
parents:
diff changeset
556 }