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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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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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10 #include <ngx_event_connect.h>
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11
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12
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13 static void ngx_http_upstream_check_broken_connection(ngx_event_t *ev);
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14 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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15 ngx_http_upstream_t *u);
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16 static void ngx_http_upstream_reinit(ngx_http_request_t *r,
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17 ngx_http_upstream_t *u);
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18 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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19 ngx_http_upstream_t *u);
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20 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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21 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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22 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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23 ngx_http_upstream_t *u);
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24 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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25 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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26 static void ngx_http_upstream_next(ngx_http_request_t *r,
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27 ngx_http_upstream_t *u,
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28 ngx_uint_t ft_type);
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29 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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30 ngx_http_upstream_t *u,
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31 ngx_int_t rc);
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32
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33 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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34 uintptr_t data);
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35 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
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36 ngx_http_log_op_t *op);
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37
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38
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39 static ngx_int_t ngx_http_upstream_add_log_formats(ngx_conf_t *cf);
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40
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41
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42 ngx_http_module_t ngx_http_upstream_module_ctx = {
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43 ngx_http_upstream_add_log_formats, /* pre conf */
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44
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45 NULL, /* create main configuration */
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46 NULL, /* init main configuration */
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47
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48 NULL, /* create server configuration */
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49 NULL, /* merge server configuration */
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50
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51 NULL, /* create location configuration */
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52 NULL /* merge location configuration */
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53 };
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54
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55
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56 ngx_module_t ngx_http_upstream_module = {
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57 NGX_MODULE,
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58 &ngx_http_upstream_module_ctx, /* module context */
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59 NULL, /* module directives */
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60 NGX_HTTP_MODULE, /* module type */
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61 NULL, /* init module */
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62 NULL /* init process */
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63 };
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64
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65
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66 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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67 { ngx_string("upstream_status"), 0, NULL,
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68 ngx_http_upstream_log_status_getlen,
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69 ngx_http_upstream_log_status },
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70 { ngx_null_string, 0, NULL, NULL, NULL }
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71 };
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72
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73
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74 char *ngx_http_upstream_header_errors[] = {
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75 "upstream sent invalid header",
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76 "upstream sent too long header line"
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77 };
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78
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79
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80 void ngx_http_upstream_init(ngx_http_request_t *r)
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81 {
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82 ngx_connection_t *c;
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83 ngx_http_upstream_t *u;
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84
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85 c = r->connection;
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86
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87 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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88 "http init upstream, client timer: %d", c->read->timer_set);
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89
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90 if (c->read->timer_set) {
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91 ngx_del_timer(c->read);
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92 }
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93
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94 c->read->event_handler = ngx_http_upstream_check_broken_connection;
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95
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96 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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97
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98 c->write->event_handler = ngx_http_upstream_check_broken_connection;
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99
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100 if (!c->write->active) {
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101 if (ngx_add_event(c->write, NGX_WRITE_EVENT,
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102 NGX_CLEAR_EVENT) == NGX_ERROR)
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103 {
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104 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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105 return;
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106 }
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107 }
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108 }
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109
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110 u = r->upstream;
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111
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112 u->method = r->method;
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113
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114 if (u->create_request(r) == NGX_ERROR) {
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115 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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116 return;
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117 }
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118
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119 u->peer.log = r->connection->log;
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120 u->saved_ctx = r->connection->log->data;
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121 u->saved_handler = r->connection->log->handler;
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122 r->connection->log->data = u->log_ctx;
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123 r->connection->log->handler = u->log_handler;
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124
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125 u->output.sendfile = r->connection->sendfile;
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126 u->output.pool = r->pool;
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127 u->output.bufs.num = 1;
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128 u->output.output_filter = ngx_chain_writer;
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129 u->output.filter_ctx = &u->writer;
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130
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131 u->writer.pool = r->pool;
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132
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133 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
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134 sizeof(ngx_http_upstream_state_t)) == NGX_ERROR)
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135 {
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136 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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137 return;
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138 }
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139
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140 if (!(u->state = ngx_push_array(&u->states))) {
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141 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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142 return;
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143 }
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144
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145 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
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146
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147 ngx_http_upstream_connect(r, u);
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148 }
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149
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150
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151 static void ngx_http_upstream_check_broken_connection(ngx_event_t *ev)
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152 {
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153 int n;
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154 char buf[1];
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155 ngx_err_t err;
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156 ngx_connection_t *c;
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157 ngx_http_request_t *r;
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158 ngx_http_upstream_t *u;
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159
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160 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, 0,
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161 "http upstream check client, write event:%d", ev->write);
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162
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163 #if (NGX_HAVE_KQUEUE)
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164
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165 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
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166
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167 if (!ev->pending_eof) {
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168 return;
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169 }
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170
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171 ev->eof = 1;
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172
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173 if (ev->kq_errno) {
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174 ev->error = 1;
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175 }
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176
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177 c = ev->data;
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178 r = c->data;
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179 u = r->upstream;
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180
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181 if (!u->cachable && u->peer.connection) {
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182 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
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183 "kevent() reported that client closed "
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184 "prematurely connection, "
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185 "so upstream connection is closed too");
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186 ngx_http_upstream_finalize_request(r, u,
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187 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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188 return;
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189 }
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190
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191 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
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192 "kevent() reported that client closed "
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193 "prematurely connection");
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194
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195 if (u->peer.connection == NULL) {
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196 ngx_http_upstream_finalize_request(r, u,
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197 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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198 return;
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199 }
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200
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201 return;
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202 }
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203
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204 #endif
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205
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206 c = ev->data;
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207
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208 n = recv(c->fd, buf, 1, MSG_PEEK);
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209
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210 err = ngx_socket_errno;
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211
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212 /*
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213 * we do not need to disable the write event because
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214 * that event has NGX_USE_CLEAR_EVENT type
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215 */
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216
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217 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
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218 return;
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219 }
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220
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221 r = c->data;
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222 u = r->upstream;
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223
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224 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
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225 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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226 ngx_http_upstream_finalize_request(r, u,
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227 NGX_HTTP_INTERNAL_SERVER_ERROR);
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228 return;
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229 }
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230 }
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231
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232 if (n > 0) {
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233 return;
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234 }
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235
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236 ev->eof = 1;
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237
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238 if (n == -1) {
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239 if (err == NGX_EAGAIN) {
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240 return;
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241 }
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242
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243 ev->error = 1;
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244
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245 } else {
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246 /* n == 0 */
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247 err = 0;
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248 }
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249
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250 if (!u->cachable && u->peer.connection) {
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251 ngx_log_error(NGX_LOG_INFO, ev->log, err,
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252 "client closed prematurely connection, "
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253 "so upstream connection is closed too");
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254 ngx_http_upstream_finalize_request(r, u,
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255 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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256 return;
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257 }
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258
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259 ngx_log_error(NGX_LOG_INFO, ev->log, err,
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260 "client closed prematurely connection");
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261
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262 if (u->peer.connection == NULL) {
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263 ngx_http_upstream_finalize_request(r, u,
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264 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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265 return;
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266 }
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267 }
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268
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269
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270 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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271 ngx_http_upstream_t *u)
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272 {
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273 ngx_int_t rc;
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274 ngx_connection_t *c;
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275 ngx_http_log_ctx_t *ctx;
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276
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277 ctx = r->connection->log->data;
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278 ctx->action = "connecting to upstream";
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279
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280 r->connection->single_connection = 0;
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281
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282 rc = ngx_event_connect_peer(&u->peer);
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283
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284 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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285 "http upstream connect: %i", rc);
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286
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287 if (rc == NGX_ERROR) {
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288 ngx_http_upstream_finalize_request(r, u,
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289 NGX_HTTP_INTERNAL_SERVER_ERROR);
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290 return;
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291 }
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292
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293 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
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294
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295 if (rc == NGX_CONNECT_ERROR) {
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296 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
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297 return;
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298 }
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299
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300 c = u->peer.connection;
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301
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302 c->data = r;
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303 c->write->event_handler = ngx_http_upstream_send_request_handler;
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304 c->read->event_handler = ngx_http_upstream_process_header;
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305
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306 c->sendfile = r->connection->sendfile;
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307
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308 c->pool = r->pool;
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309 c->read->log = c->write->log = c->log = r->connection->log;
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310
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311 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
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312
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313 u->writer.out = NULL;
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314 u->writer.last = &u->writer.out;
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315 u->writer.connection = c;
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316 u->writer.limit = 0;
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317
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318 if (u->request_sent) {
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319 ngx_http_upstream_reinit(r, u);
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320 }
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321
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322 if (r->request_body->buf) {
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323 if (r->request_body->temp_file) {
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324
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325 if (!(u->output.free = ngx_alloc_chain_link(r->pool))) {
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326 ngx_http_upstream_finalize_request(r, u,
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327 NGX_HTTP_INTERNAL_SERVER_ERROR);
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328 return;
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329 }
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330
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331 u->output.free->buf = r->request_body->buf;
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332 u->output.free->next = NULL;
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333 u->output.allocated = 1;
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334
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335 r->request_body->buf->pos = r->request_body->buf->start;
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336 r->request_body->buf->last = r->request_body->buf->start;
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337 r->request_body->buf->tag = u->output.tag;
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338
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339 } else {
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340 r->request_body->buf->pos = r->request_body->buf->start;
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341 }
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342 }
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343
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344 u->request_sent = 0;
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345
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346 if (rc == NGX_AGAIN) {
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347 ngx_add_timer(c->write, u->conf->connect_timeout);
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348 return;
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349 }
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350
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351 /* rc == NGX_OK */
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352
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353 ngx_http_upstream_send_request(r, u);
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354 }
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355
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356
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357 static void ngx_http_upstream_reinit(ngx_http_request_t *r,
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358 ngx_http_upstream_t *u)
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359 {
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360 ngx_chain_t *cl;
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361
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362 if (u->reinit_request(r) == NGX_ERROR) {
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363 ngx_http_upstream_finalize_request(r, u,
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364 NGX_HTTP_INTERNAL_SERVER_ERROR);
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365 return;
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366 }
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367
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368 /* reinit the request chain */
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369
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370 for (cl = r->request_body->bufs; cl; cl = cl->next) {
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371 cl->buf->pos = cl->buf->start;
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372 cl->buf->file_pos = 0;
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373 }
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374
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375 /* reinit the ngx_output_chain() context */
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376
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377 u->output.buf = NULL;
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378 u->output.in = NULL;
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379 u->output.free = NULL;
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380 u->output.busy = NULL;
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381
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382 /* reinit u->header_in buffer */
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383
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384 #if 0
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385 if (u->cache) {
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386 u->header_in.pos = u->header_in.start + u->cache->ctx.header_size;
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387 u->header_in.last = u->header_in.pos;
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388
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389 } else {
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390 u->header_in.pos = u->header_in.start;
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391 u->header_in.last = u->header_in.start;
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392 }
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393 #else
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394 u->header_in.pos = u->header_in.start;
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395 u->header_in.last = u->header_in.start;
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396 #endif
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397
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398 /* add one more state */
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399
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400 if (!(u->state = ngx_push_array(&u->states))) {
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401 ngx_http_upstream_finalize_request(r, u,
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402 NGX_HTTP_INTERNAL_SERVER_ERROR);
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403 return;
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404 }
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405
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406 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
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407
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|
|
408 u->status = 0;
|
|
|
409 u->status_count = 0;
|
|
|
410 }
|
|
|
411
|
|
|
412
|
|
|
413 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
|
|
|
414 ngx_http_upstream_t *u)
|
|
|
415 {
|
|
|
416 int rc;
|
|
|
417 ngx_connection_t *c;
|
|
|
418 ngx_http_log_ctx_t *ctx;
|
|
|
419
|
|
|
420 c = u->peer.connection;
|
|
|
421
|
|
|
422 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
423 "http upstream send request");
|
|
|
424
|
|
|
425 #if (NGX_HAVE_KQUEUE)
|
|
|
426
|
|
|
427 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
428 && !u->request_sent
|
|
|
429 && c->write->pending_eof)
|
|
|
430 {
|
|
|
431 ngx_log_error(NGX_LOG_ERR, c->log, c->write->kq_errno,
|
|
|
432 "connect() failed");
|
|
|
433
|
|
|
434 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
435 return;
|
|
|
436 }
|
|
|
437
|
|
|
438 #endif
|
|
|
439
|
|
|
440 ctx = c->log->data;
|
|
|
441 ctx->action = "sending request to upstream";
|
|
|
442
|
|
|
443 rc = ngx_output_chain(&u->output,
|
|
|
444 u->request_sent ? NULL : r->request_body->bufs);
|
|
|
445
|
|
|
446 u->request_sent = 1;
|
|
|
447
|
|
|
448 if (rc == NGX_ERROR) {
|
|
|
449 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
450 return;
|
|
|
451 }
|
|
|
452
|
|
|
453 if (c->write->timer_set) {
|
|
|
454 ngx_del_timer(c->write);
|
|
|
455 }
|
|
|
456
|
|
|
457 if (rc == NGX_AGAIN) {
|
|
|
458 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
459
|
|
|
460 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
461 {
|
|
|
462 ngx_http_upstream_finalize_request(r, u,
|
|
|
463 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
464 return;
|
|
|
465 }
|
|
|
466
|
|
|
467 return;
|
|
|
468 }
|
|
|
469
|
|
|
470 /* rc == NGX_OK */
|
|
|
471
|
|
|
472 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
473 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
474 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
475 ngx_tcp_push_n " failed");
|
|
|
476 ngx_http_upstream_finalize_request(r, u,
|
|
|
477 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
478 return;
|
|
|
479 }
|
|
|
480
|
|
|
481 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
482 return;
|
|
|
483 }
|
|
|
484
|
|
|
485 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
486
|
|
|
487 #if 1
|
|
|
488 if (c->read->ready) {
|
|
|
489
|
|
|
490 /* post aio operation */
|
|
|
491
|
|
|
492 /*
|
|
|
493 * TODO comment
|
|
|
494 * although we can post aio operation just in the end
|
|
|
495 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
496 * it's better to do here because we postpone header buffer allocation
|
|
|
497 */
|
|
|
498
|
|
|
499 ngx_http_upstream_process_header(c->read);
|
|
|
500 return;
|
|
|
501 }
|
|
|
502 #endif
|
|
|
503
|
|
|
504 c->write->event_handler = ngx_http_upstream_dummy_handler;
|
|
|
505
|
|
|
506 if (ngx_handle_level_write_event(c->write) == NGX_ERROR) {
|
|
|
507 ngx_http_upstream_finalize_request(r, u,
|
|
|
508 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
509 return;
|
|
|
510 }
|
|
|
511 }
|
|
|
512
|
|
|
513
|
|
|
514 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
|
515 {
|
|
|
516 ngx_connection_t *c;
|
|
|
517 ngx_http_request_t *r;
|
|
|
518 ngx_http_log_ctx_t *ctx;
|
|
|
519 ngx_http_upstream_t *u;
|
|
|
520
|
|
|
521 c = wev->data;
|
|
|
522 r = c->data;
|
|
|
523 u = r->upstream;
|
|
|
524
|
|
|
525 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
526 "http upstream send request handler");
|
|
|
527
|
|
|
528 if (wev->timedout) {
|
|
|
529 ctx = c->log->data;
|
|
|
530 ctx->action = "sending request to upstream";
|
|
|
531 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
532 return;
|
|
|
533 }
|
|
|
534
|
|
|
535 if (r->connection->write->eof && (!u->cachable || !u->request_sent)) {
|
|
|
536 ngx_http_upstream_finalize_request(r, u,
|
|
|
537 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
538 return;
|
|
|
539 }
|
|
|
540
|
|
|
541 ngx_http_upstream_send_request(r, u);
|
|
|
542 }
|
|
|
543
|
|
|
544
|
|
|
545 static void ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
|
546 {
|
|
|
547 ssize_t n;
|
|
|
548 ngx_int_t rc;
|
|
|
549 ngx_connection_t *c;
|
|
|
550 ngx_http_request_t *r;
|
|
|
551 ngx_http_log_ctx_t *ctx;
|
|
|
552 ngx_http_upstream_t *u;
|
|
|
553
|
|
|
554 c = rev->data;
|
|
|
555 r = c->data;
|
|
|
556 u = r->upstream;
|
|
|
557
|
|
|
558 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
|
559 "http upstream process handler");
|
|
|
560
|
|
|
561 ctx = c->log->data;
|
|
|
562 ctx->action = "reading response header from upstream";
|
|
|
563
|
|
|
564 if (rev->timedout) {
|
|
|
565 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
566 return;
|
|
|
567 }
|
|
|
568
|
|
|
569 if (u->header_in.start == NULL) {
|
|
|
570 u->header_in.start = ngx_palloc(r->pool, u->conf->header_buffer_size);
|
|
|
571 if (u->header_in.start == NULL) {
|
|
|
572 ngx_http_upstream_finalize_request(r, u,
|
|
|
573 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
574 return;
|
|
|
575 }
|
|
|
576
|
|
|
577 u->header_in.pos = u->header_in.start;
|
|
|
578 u->header_in.last = u->header_in.start;
|
|
|
579 u->header_in.end = u->header_in.last + u->conf->header_buffer_size;
|
|
|
580 u->header_in.temporary = 1;
|
|
|
581
|
|
|
582 u->header_in.tag = u->output.tag;
|
|
|
583
|
|
|
584 #if 0
|
|
|
585 if (u->cache) {
|
|
|
586 u->header_in.pos += u->cache->ctx.header_size;
|
|
|
587 u->header_in.last = u->header_in.pos;
|
|
|
588 }
|
|
|
589 #endif
|
|
|
590 }
|
|
|
591
|
|
|
592 n = ngx_recv(u->peer.connection, u->header_in.last,
|
|
|
593 u->header_in.end - u->header_in.last);
|
|
|
594
|
|
|
595 if (n == NGX_AGAIN) {
|
|
|
596 #if 0
|
|
|
597 ngx_add_timer(rev, u->read_timeout);
|
|
|
598 #endif
|
|
|
599
|
|
|
600 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
601 ngx_http_upstream_finalize_request(r, u,
|
|
|
602 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
603 return;
|
|
|
604 }
|
|
|
605
|
|
|
606 return;
|
|
|
607 }
|
|
|
608
|
|
|
609 if (n == 0) {
|
|
|
610 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
611 "upstream prematurely closed connection");
|
|
|
612 }
|
|
|
613
|
|
|
614 if (n == NGX_ERROR || n == 0) {
|
|
|
615 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
616 return;
|
|
|
617 }
|
|
|
618
|
|
|
619 if (n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
620 ngx_http_upstream_finalize_request(r, u,
|
|
|
621 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
622 return;
|
|
|
623 }
|
|
|
624
|
|
|
625 u->header_in.last += n;
|
|
|
626
|
|
|
627 #if 0
|
|
|
628 u->valid_header_in = 0;
|
|
|
629
|
|
|
630 u->peer.cached = 0;
|
|
|
631 #endif
|
|
|
632
|
|
|
633 rc = u->process_header(r);
|
|
|
634
|
|
|
635 if (rc == NGX_AGAIN) {
|
|
|
636 #if 0
|
|
|
637 ngx_add_timer(rev, u->read_timeout);
|
|
|
638 #endif
|
|
|
639
|
|
|
640 if (u->header_in.last == u->header_in.end) {
|
|
|
641 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
642 "upstream sent too big header");
|
|
|
643
|
|
|
644 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
645 return;
|
|
|
646 }
|
|
|
647
|
|
|
648 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
649 ngx_http_upstream_finalize_request(r, u,
|
|
|
650 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
651 return;
|
|
|
652 }
|
|
|
653
|
|
|
654 return;
|
|
|
655 }
|
|
|
656
|
|
|
657 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
658 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
659 return;
|
|
|
660 }
|
|
|
661
|
|
|
662 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
663 ngx_http_upstream_finalize_request(r, u,
|
|
|
664 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
665 return;
|
|
|
666 }
|
|
|
667
|
|
|
668 /* rc == NGX_OK */
|
|
|
669
|
|
|
670 ngx_http_upstream_send_response(r, u);
|
|
|
671 }
|
|
|
672
|
|
|
673
|
|
|
674 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
|
|
|
675 ngx_http_upstream_t *u)
|
|
|
676 {
|
|
|
677 ngx_event_pipe_t *p;
|
|
|
678 ngx_http_core_loc_conf_t *clcf;
|
|
|
679
|
|
|
680
|
|
|
681 if (u->send_header(r) == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
682 ngx_http_upstream_finalize_request(r, u,
|
|
|
683 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
684 return;
|
|
|
685 }
|
|
|
686
|
|
|
687 u->header_sent = 1;
|
|
|
688
|
|
|
689 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
690
|
|
|
691 #if 0
|
|
|
692
|
|
|
693 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
694 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
|
695 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
|
696 ngx_close_file_n " \"%s\" failed",
|
|
|
697 u->cache->ctx.file.name.data);
|
|
|
698 }
|
|
|
699 }
|
|
|
700
|
|
|
701 if (u->cachable) {
|
|
|
702 header = (ngx_http_cache_header_t *) u->header_in->start;
|
|
|
703
|
|
|
704 header->expires = u->cache->ctx.expires;
|
|
|
705 header->last_modified = u->cache->ctx.last_modified;
|
|
|
706 header->date = u->cache->ctx.date;
|
|
|
707 header->length = r->headers_out.content_length_n;
|
|
|
708 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
709
|
|
|
710 header->key_len = u->cache->ctx.key0.len;
|
|
|
711 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
712 header->key[header->key_len] = LF;
|
|
|
713 }
|
|
|
714
|
|
|
715 #endif
|
|
|
716
|
|
|
717 p = &u->pipe;
|
|
|
718
|
|
|
719 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
720 p->output_ctx = r;
|
|
|
721 p->tag = u->output.tag;
|
|
|
722 p->bufs = u->conf->bufs;
|
|
|
723 p->busy_size = u->conf->busy_buffers_size;
|
|
|
724 p->upstream = u->peer.connection;
|
|
|
725 p->downstream = r->connection;
|
|
|
726 p->pool = r->pool;
|
|
|
727 p->log = r->connection->log;
|
|
|
728
|
|
|
729 p->cachable = u->cachable;
|
|
|
730
|
|
|
731 if (!(p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)))) {
|
|
|
732 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
733 return;
|
|
|
734 }
|
|
|
735
|
|
|
736 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
|
737 p->temp_file->file.log = r->connection->log;
|
|
|
738 p->temp_file->path = u->conf->temp_path;
|
|
|
739 p->temp_file->pool = r->pool;
|
|
|
740
|
|
|
741 if (u->cachable) {
|
|
|
742 p->temp_file->persistent = 1;
|
|
|
743 } else {
|
|
|
744 p->temp_file->warn = "an upstream response is buffered "
|
|
|
745 "to a temporary file";
|
|
|
746 }
|
|
|
747
|
|
|
748 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
749 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
750
|
|
|
751 if (!(p->preread_bufs = ngx_alloc_chain_link(r->pool))) {
|
|
|
752 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
753 return;
|
|
|
754 }
|
|
|
755 p->preread_bufs->buf = &u->header_in;
|
|
|
756 p->preread_bufs->next = NULL;
|
|
|
757 u->header_in.recycled = 1;
|
|
|
758
|
|
|
759 p->preread_size = u->header_in.last - u->header_in.pos;
|
|
|
760
|
|
|
761 if (u->cachable) {
|
|
|
762 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
763 if (p->buf_to_file == NULL) {
|
|
|
764 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
765 return;
|
|
|
766 }
|
|
|
767 p->buf_to_file->pos = u->header_in.start;
|
|
|
768 p->buf_to_file->last = u->header_in.pos;
|
|
|
769 p->buf_to_file->temporary = 1;
|
|
|
770 }
|
|
|
771
|
|
|
772 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
773 /* the posted aio operation may currupt a shadow buffer */
|
|
|
774 p->single_buf = 1;
|
|
|
775 }
|
|
|
776
|
|
|
777 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
778 p->free_bufs = 1;
|
|
|
779
|
|
|
780 /*
|
|
|
781 * event_pipe would do u->header_in.last += p->preread_size
|
|
|
782 * as though these bytes were read
|
|
|
783 */
|
|
|
784 u->header_in.last = u->header_in.pos;
|
|
|
785
|
|
|
786 if (u->conf->cyclic_temp_file) {
|
|
|
787
|
|
|
788 /*
|
|
|
789 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
790 * because the writing a new data may interfere with sendfile()
|
|
|
791 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
792 */
|
|
|
793
|
|
|
794 p->cyclic_temp_file = 1;
|
|
|
795 r->connection->sendfile = 0;
|
|
|
796
|
|
|
797 } else {
|
|
|
798 p->cyclic_temp_file = 0;
|
|
|
799 }
|
|
|
800
|
|
|
801 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
802
|
|
|
803 p->read_timeout = u->conf->read_timeout;
|
|
|
804 p->send_timeout = clcf->send_timeout;
|
|
|
805 p->send_lowat = clcf->send_lowat;
|
|
|
806
|
|
|
807 u->peer.connection->read->event_handler = ngx_http_upstream_process_body;
|
|
|
808 r->connection->write->event_handler = ngx_http_upstream_process_body;
|
|
|
809
|
|
|
810 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
811 }
|
|
|
812
|
|
|
813
|
|
|
814 static void ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
|
815 {
|
|
|
816 ngx_connection_t *c;
|
|
|
817 ngx_http_request_t *r;
|
|
|
818 ngx_http_log_ctx_t *ctx;
|
|
|
819 ngx_http_upstream_t *u;
|
|
|
820 ngx_event_pipe_t *p;
|
|
|
821
|
|
|
822 c = ev->data;
|
|
|
823 r = c->data;
|
|
|
824 u = r->upstream;
|
|
|
825
|
|
|
826 ctx = ev->log->data;
|
|
|
827
|
|
|
828 if (ev->write) {
|
|
|
829 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
830 "http proxy process downstream");
|
|
|
831 ctx->action = "sending to client";
|
|
|
832
|
|
|
833 } else {
|
|
|
834 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
835 "http proxy process upstream");
|
|
|
836 ctx->action = "reading upstream body";
|
|
|
837 }
|
|
|
838
|
|
|
839 p = &u->pipe;
|
|
|
840
|
|
|
841 if (ev->timedout) {
|
|
|
842 if (ev->write) {
|
|
|
843 p->downstream_error = 1;
|
|
|
844 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
845 "client timed out");
|
|
|
846
|
|
|
847 } else {
|
|
|
848 p->upstream_error = 1;
|
|
|
849 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
850 "upstream timed out");
|
|
|
851 }
|
|
|
852
|
|
|
853 } else {
|
|
|
854 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
855 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
856 return;
|
|
|
857 }
|
|
|
858 }
|
|
|
859
|
|
|
860 if (u->peer.connection) {
|
|
|
861
|
|
|
862 #if (NGX_HTTP_FILE_CACHE)
|
|
|
863
|
|
|
864 if (p->upstream_done && u->cachable) {
|
|
|
865 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
866 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
867 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
868 return;
|
|
|
869 }
|
|
|
870
|
|
|
871 } else if (p->upstream_eof && u->cachable) {
|
|
|
872
|
|
|
873 /* TODO: check length & update cache */
|
|
|
874
|
|
|
875 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
876 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
877 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
878 return;
|
|
|
879 }
|
|
|
880 }
|
|
|
881
|
|
|
882 #endif
|
|
|
883
|
|
|
884 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
|
885 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
886 "http proxy upstream exit: %p", p->out);
|
|
|
887 #if 0
|
|
|
888 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
889 #endif
|
|
|
890 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
891 return;
|
|
|
892 }
|
|
|
893 }
|
|
|
894
|
|
|
895 if (p->downstream_error) {
|
|
|
896 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
897 "http proxy downstream error");
|
|
|
898
|
|
|
899 if (!u->cachable && u->peer.connection) {
|
|
|
900 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
901 }
|
|
|
902 }
|
|
|
903 }
|
|
|
904
|
|
|
905
|
|
|
906 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
|
907 {
|
|
|
908 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
909 "http upstream dummy handler");
|
|
|
910 }
|
|
|
911
|
|
|
912
|
|
|
913 static void ngx_http_upstream_next(ngx_http_request_t *r,
|
|
|
914 ngx_http_upstream_t *u,
|
|
|
915 ngx_uint_t ft_type)
|
|
|
916 {
|
|
|
917 ngx_uint_t status;
|
|
|
918
|
|
|
919 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
920 "http next upstream, %xD", ft_type);
|
|
|
921
|
|
|
922 #if 0
|
|
|
923 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
924 #endif
|
|
|
925
|
|
|
926 if (ft_type != NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
927 ngx_event_connect_peer_failed(&u->peer);
|
|
|
928 }
|
|
|
929
|
|
|
930 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
931 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
932 "upstream timed out");
|
|
|
933 }
|
|
|
934
|
|
|
935 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
936 status = 0;
|
|
|
937
|
|
|
938 } else {
|
|
|
939 switch(ft_type) {
|
|
|
940
|
|
|
941 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
942 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
943 break;
|
|
|
944
|
|
|
945 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
946 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
947 break;
|
|
|
948
|
|
|
949 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
950 status = NGX_HTTP_NOT_FOUND;
|
|
|
951 break;
|
|
|
952
|
|
|
953 /*
|
|
|
954 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
955 * never reach here
|
|
|
956 */
|
|
|
957
|
|
|
958 default:
|
|
|
959 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
960 }
|
|
|
961 }
|
|
|
962
|
|
|
963 if (r->connection->write->eof) {
|
|
|
964 ngx_http_upstream_finalize_request(r, u,
|
|
|
965 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
966 return;
|
|
|
967 }
|
|
|
968
|
|
|
969 if (status) {
|
|
|
970 u->state->status = status;
|
|
|
971
|
|
|
972 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type))
|
|
|
973 {
|
|
|
974
|
|
|
975 #if (NGX_HTTP_CACHE)
|
|
|
976
|
|
|
977 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
978 ngx_http_upstream_finalize_request(r, u,
|
|
|
979 ngx_http_proxy_send_cached_response(r));
|
|
|
980 return;
|
|
|
981 }
|
|
|
982
|
|
|
983 #endif
|
|
|
984
|
|
|
985 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
986 return;
|
|
|
987 }
|
|
|
988 }
|
|
|
989
|
|
|
990 if (u->peer.connection) {
|
|
|
991 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
992 "close http upstream connection: %d",
|
|
|
993 u->peer.connection->fd);
|
|
|
994
|
|
|
995 ngx_close_connection(u->peer.connection);
|
|
|
996 }
|
|
|
997
|
|
|
998 #if 0
|
|
|
999 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1000 ngx_http_upstream_busy_lock(p);
|
|
|
1001 return;
|
|
|
1002 }
|
|
|
1003 #endif
|
|
|
1004
|
|
|
1005 ngx_http_upstream_connect(r, u);
|
|
|
1006 }
|
|
|
1007
|
|
|
1008
|
|
|
1009 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1010 ngx_http_upstream_t *u,
|
|
|
1011 ngx_int_t rc)
|
|
|
1012 {
|
|
|
1013 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1014 "finalize http upstream request");
|
|
|
1015
|
|
|
1016 u->finalize_request(r, rc);
|
|
|
1017
|
|
|
1018 if (u->peer.connection) {
|
|
|
1019 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1020 "close http upstream connection: %d",
|
|
|
1021 u->peer.connection->fd);
|
|
|
1022
|
|
|
1023 ngx_close_connection(u->peer.connection);
|
|
|
1024 }
|
|
|
1025
|
|
|
1026 if (u->header_sent
|
|
|
1027 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
|
1028 {
|
|
|
1029 rc = 0;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 if (u->saved_ctx) {
|
|
|
1033 r->connection->log->data = u->saved_ctx;
|
|
|
1034 r->connection->log->handler = u->saved_handler;
|
|
|
1035 }
|
|
|
1036
|
|
30
|
1037 if (u->pipe.temp_file) {
|
|
28
|
1038 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1039 "http upstream temp fd: %d",
|
|
|
1040 u->pipe.temp_file->file.fd);
|
|
|
1041 }
|
|
|
1042
|
|
|
1043 #if 0
|
|
|
1044 if (u->cache) {
|
|
|
1045 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1046 "http proxy cache fd: %d",
|
|
|
1047 u->cache->ctx.file.fd);
|
|
|
1048 }
|
|
|
1049 #endif
|
|
|
1050
|
|
30
|
1051 if (u->pipe.temp_file) {
|
|
28
|
1052 r->file.fd = u->pipe.temp_file->file.fd;
|
|
|
1053
|
|
|
1054 #if 0
|
|
|
1055 } else if (u->cache) {
|
|
|
1056 r->file.fd = u->cache->ctx.file.fd;
|
|
|
1057 #endif
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 if (rc == 0 && r->main == NULL) {
|
|
|
1061 rc = ngx_http_send_last(r);
|
|
|
1062 }
|
|
|
1063
|
|
|
1064 ngx_http_finalize_request(r, rc);
|
|
|
1065 }
|
|
|
1066
|
|
|
1067
|
|
|
1068 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
|
|
|
1069 uintptr_t data)
|
|
|
1070 {
|
|
|
1071 if (r->upstream) {
|
|
|
1072 return r->upstream->states.nelts * (3 + 2);
|
|
|
1073 }
|
|
|
1074
|
|
|
1075 return 1;
|
|
|
1076 }
|
|
|
1077
|
|
|
1078
|
|
|
1079 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
1080 ngx_http_log_op_t *op)
|
|
|
1081 {
|
|
|
1082 ngx_uint_t i;
|
|
|
1083 ngx_http_upstream_t *u;
|
|
|
1084 ngx_http_upstream_state_t *state;
|
|
|
1085
|
|
|
1086 u = r->upstream;
|
|
|
1087
|
|
|
1088 if (u == NULL) {
|
|
|
1089 *buf = '-';
|
|
|
1090 return buf + 1;
|
|
|
1091 }
|
|
|
1092
|
|
|
1093 i = 0;
|
|
|
1094 state = u->states.elts;
|
|
|
1095
|
|
|
1096 for ( ;; ) {
|
|
|
1097 if (state[i].status == 0) {
|
|
|
1098 *buf++ = '-';
|
|
|
1099
|
|
|
1100 } else {
|
|
|
1101 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
1102 }
|
|
|
1103
|
|
|
1104 if (++i == u->states.nelts) {
|
|
|
1105 return buf;
|
|
|
1106 }
|
|
|
1107
|
|
|
1108 *buf++ = ',';
|
|
|
1109 *buf++ = ' ';
|
|
|
1110 }
|
|
|
1111 }
|
|
|
1112
|
|
|
1113
|
|
|
1114 u_char *ngx_http_upstream_log_error(void *data, u_char *buf, size_t len)
|
|
|
1115 {
|
|
|
1116 ngx_http_log_ctx_t *ctx = data;
|
|
|
1117
|
|
|
1118 u_char *p;
|
|
|
1119 ngx_int_t escape;
|
|
|
1120 ngx_str_t uri;
|
|
|
1121 ngx_http_request_t *r;
|
|
|
1122 ngx_http_upstream_t *u;
|
|
|
1123 ngx_peer_connection_t *peer;
|
|
|
1124
|
|
|
1125 r = ctx->request;
|
|
|
1126 u = r->upstream;
|
|
|
1127 peer = &u->peer;
|
|
|
1128
|
|
|
1129 p = ngx_snprintf(buf, len,
|
|
|
1130 " while %s, client: %V, URL: %V, upstream: %V%V%s%V",
|
|
|
1131 ctx->action,
|
|
|
1132 &r->connection->addr_text,
|
|
|
1133 &r->unparsed_uri,
|
|
|
1134 &u->schema,
|
|
|
1135 &peer->peers->peer[peer->cur_peer].name,
|
|
|
1136 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
|
1137 &u->uri);
|
|
|
1138 len -= p - buf;
|
|
|
1139 buf = p;
|
|
|
1140
|
|
|
1141 if (r->quoted_uri) {
|
|
|
1142 escape = 2 * ngx_escape_uri(NULL, r->uri.data + u->location->len,
|
|
|
1143 r->uri.len - u->location->len,
|
|
|
1144 NGX_ESCAPE_URI);
|
|
|
1145 } else {
|
|
|
1146 escape = 0;
|
|
|
1147 }
|
|
|
1148
|
|
|
1149 if (escape) {
|
|
|
1150 if (len >= r->uri.len - u->location->len + escape) {
|
|
|
1151
|
|
|
1152 ngx_escape_uri(buf, r->uri.data + u->location->len,
|
|
|
1153 r->uri.len - u->location->len, NGX_ESCAPE_URI);
|
|
|
1154
|
|
|
1155 buf += r->uri.len - u->location->len + escape;
|
|
|
1156
|
|
|
1157 if (r->args.len == 0) {
|
|
|
1158 return buf;
|
|
|
1159 }
|
|
|
1160
|
|
|
1161 len -= r->uri.len - u->location->len + escape;
|
|
|
1162
|
|
|
1163 return ngx_snprintf(buf, len, "?%V", &r->args);
|
|
|
1164 }
|
|
|
1165
|
|
|
1166 p = ngx_palloc(r->pool, r->uri.len - u->location->len + escape);
|
|
|
1167 if (p == NULL) {
|
|
|
1168 return buf;
|
|
|
1169 }
|
|
|
1170
|
|
|
1171 ngx_escape_uri(p, r->uri.data + u->location->len,
|
|
|
1172 r->uri.len - u->location->len, NGX_ESCAPE_URI);
|
|
|
1173
|
|
|
1174 uri.len = r->uri.len - u->location->len + escape;
|
|
|
1175 uri.data = p;
|
|
|
1176
|
|
|
1177 } else {
|
|
|
1178 uri.len = r->uri.len - u->location->len;
|
|
|
1179 uri.data = r->uri.data + u->location->len;
|
|
|
1180
|
|
|
1181 }
|
|
|
1182
|
|
|
1183 return ngx_snprintf(buf, len, "%V%s%V",
|
|
|
1184 &uri, r->args.len ? "?" : "", &r->args);
|
|
|
1185 }
|
|
|
1186
|
|
|
1187
|
|
|
1188 static ngx_int_t ngx_http_upstream_add_log_formats(ngx_conf_t *cf)
|
|
|
1189 {
|
|
|
1190 ngx_http_log_op_name_t *op;
|
|
|
1191
|
|
|
1192 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
1193 op->run = NULL;
|
|
|
1194
|
|
|
1195 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
1196 if (op->name.len == 0) {
|
|
|
1197 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
1198 }
|
|
|
1199 }
|
|
|
1200
|
|
|
1201 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
1202
|
|
|
1203 return NGX_OK;
|
|
|
1204 }
|
