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130
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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
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11
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12 typedef struct {
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13 ngx_http_upstream_conf_t upstream;
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278
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14 ngx_int_t index;
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130
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15 } ngx_http_memcached_loc_conf_t;
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16
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17
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18 typedef struct {
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19 size_t rest;
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20 ngx_http_request_t *request;
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146
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21 ngx_str_t key;
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130
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22 } ngx_http_memcached_ctx_t;
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23
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24
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25 static ngx_int_t ngx_http_memcached_create_request(ngx_http_request_t *r);
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26 static ngx_int_t ngx_http_memcached_reinit_request(ngx_http_request_t *r);
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27 static ngx_int_t ngx_http_memcached_process_header(ngx_http_request_t *r);
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28 static ngx_int_t ngx_http_memcached_filter_init(void *data);
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29 static ngx_int_t ngx_http_memcached_filter(void *data, ssize_t bytes);
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30 static void ngx_http_memcached_abort_request(ngx_http_request_t *r);
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31 static void ngx_http_memcached_finalize_request(ngx_http_request_t *r,
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32 ngx_int_t rc);
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33
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34 static void *ngx_http_memcached_create_loc_conf(ngx_conf_t *cf);
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35 static char *ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf,
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36 void *parent, void *child);
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37
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38 static char *ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd,
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39 void *conf);
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40
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41
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42 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = {
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43 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
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44 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
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45 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
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46 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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214
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47 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
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130
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48 { ngx_null_string, 0 }
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49 };
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50
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51
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52 static ngx_command_t ngx_http_memcached_commands[] = {
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53
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54 { ngx_string("memcached_pass"),
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358
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55 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
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130
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56 ngx_http_memcached_pass,
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57 NGX_HTTP_LOC_CONF_OFFSET,
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58 0,
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59 NULL },
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60
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540
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61 { ngx_string("memcached_bind"),
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62 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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558
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63 ngx_http_upstream_bind_set_slot,
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540
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64 NGX_HTTP_LOC_CONF_OFFSET,
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65 offsetof(ngx_http_memcached_loc_conf_t, upstream.local),
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66 NULL },
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67
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130
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68 { ngx_string("memcached_connect_timeout"),
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69 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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70 ngx_conf_set_msec_slot,
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71 NGX_HTTP_LOC_CONF_OFFSET,
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72 offsetof(ngx_http_memcached_loc_conf_t, upstream.connect_timeout),
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73 NULL },
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74
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75 { ngx_string("memcached_send_timeout"),
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76 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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77 ngx_conf_set_msec_slot,
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78 NGX_HTTP_LOC_CONF_OFFSET,
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79 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout),
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80 NULL },
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81
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82 { ngx_string("memcached_buffer_size"),
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83 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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84 ngx_conf_set_size_slot,
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85 NGX_HTTP_LOC_CONF_OFFSET,
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86 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size),
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87 NULL },
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88
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89 { ngx_string("memcached_read_timeout"),
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90 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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91 ngx_conf_set_msec_slot,
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92 NGX_HTTP_LOC_CONF_OFFSET,
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93 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout),
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94 NULL },
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95
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96 { ngx_string("memcached_next_upstream"),
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97 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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98 ngx_conf_set_bitmask_slot,
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99 NGX_HTTP_LOC_CONF_OFFSET,
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100 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream),
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101 &ngx_http_memcached_next_upstream_masks },
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102
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103 ngx_null_command
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104 };
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105
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106
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216
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107 static ngx_http_module_t ngx_http_memcached_module_ctx = {
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130
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108 NULL, /* preconfiguration */
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109 NULL, /* postconfiguration */
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110
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111 NULL, /* create main configuration */
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112 NULL, /* init main configuration */
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113
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114 NULL, /* create server configuration */
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115 NULL, /* merge server configuration */
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116
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117 ngx_http_memcached_create_loc_conf, /* create location configration */
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118 ngx_http_memcached_merge_loc_conf /* merge location configration */
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119 };
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120
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121
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122 ngx_module_t ngx_http_memcached_module = {
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123 NGX_MODULE_V1,
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124 &ngx_http_memcached_module_ctx, /* module context */
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125 ngx_http_memcached_commands, /* module directives */
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126 NGX_HTTP_MODULE, /* module type */
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127 NULL, /* init master */
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128 NULL, /* init module */
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129 NULL, /* init process */
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130 NULL, /* init thread */
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131 NULL, /* exit thread */
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132 NULL, /* exit process */
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133 NULL, /* exit master */
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134 NGX_MODULE_V1_PADDING
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135 };
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136
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137
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278
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138 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key");
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139
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140
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130
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141 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1)
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142 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF;
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143
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144
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145 static ngx_int_t
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146 ngx_http_memcached_handler(ngx_http_request_t *r)
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147 {
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148 ngx_int_t rc;
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149 ngx_http_upstream_t *u;
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150 ngx_http_memcached_ctx_t *ctx;
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151 ngx_http_memcached_loc_conf_t *mlcf;
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152
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194
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153 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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130
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154 return NGX_HTTP_NOT_ALLOWED;
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155 }
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156
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326
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157 rc = ngx_http_discard_request_body(r);
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130
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158
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326
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159 if (rc != NGX_OK) {
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130
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160 return rc;
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161 }
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162
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163 if (ngx_http_set_content_type(r) != NGX_OK) {
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164 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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165 }
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166
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510
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167 if (ngx_http_upstream_create(r) != NGX_OK) {
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130
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168 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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169 }
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170
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510
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171 u = r->upstream;
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172
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570
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173 ngx_str_set(&u->schema, "memcached://");
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510
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174 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module;
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130
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175
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510
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176 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
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130
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177
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178 u->conf = &mlcf->upstream;
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179
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180 u->create_request = ngx_http_memcached_create_request;
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181 u->reinit_request = ngx_http_memcached_reinit_request;
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182 u->process_header = ngx_http_memcached_process_header;
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183 u->abort_request = ngx_http_memcached_abort_request;
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184 u->finalize_request = ngx_http_memcached_finalize_request;
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185
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186 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t));
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187 if (ctx == NULL) {
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188 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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189 }
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190
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191 ctx->rest = NGX_HTTP_MEMCACHED_END;
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192 ctx->request = r;
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193
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146
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194 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module);
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195
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130
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196 u->input_filter_init = ngx_http_memcached_filter_init;
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197 u->input_filter = ngx_http_memcached_filter;
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198 u->input_filter_ctx = ctx;
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199
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520
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200 r->main->count++;
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201
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130
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202 ngx_http_upstream_init(r);
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203
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204 return NGX_DONE;
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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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209 ngx_http_memcached_create_request(ngx_http_request_t *r)
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210 {
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278
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211 size_t len;
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322
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212 uintptr_t escape;
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278
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213 ngx_buf_t *b;
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214 ngx_chain_t *cl;
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215 ngx_http_memcached_ctx_t *ctx;
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216 ngx_http_variable_value_t *vv;
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217 ngx_http_memcached_loc_conf_t *mlcf;
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218
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219 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
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130
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220
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278
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221 vv = ngx_http_get_indexed_variable(r, mlcf->index);
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222
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223 if (vv == NULL || vv->not_found || vv->len == 0) {
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224 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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225 "the \"$memcached_key\" variable is not set");
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226 return NGX_ERROR;
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227 }
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228
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322
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229 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED);
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230
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231 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1;
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130
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232
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233 b = ngx_create_temp_buf(r->pool, len);
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234 if (b == NULL) {
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235 return NGX_ERROR;
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236 }
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237
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238 cl = ngx_alloc_chain_link(r->pool);
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239 if (cl == NULL) {
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240 return NGX_ERROR;
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241 }
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242
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243 cl->buf = b;
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244 cl->next = NULL;
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245
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246 r->upstream->request_bufs = cl;
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247
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248 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' ';
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249
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146
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250 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
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251
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252 ctx->key.data = b->last;
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253
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322
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254 if (escape == 0) {
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255 b->last = ngx_copy(b->last, vv->data, vv->len);
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256
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257 } else {
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258 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len,
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259 NGX_ESCAPE_MEMCACHED);
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260 }
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130
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261
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146
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262 ctx->key.len = b->last - ctx->key.data;
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130
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263
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264 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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146
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265 "http memcached request: \"%V\"", &ctx->key);
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130
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266
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282
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267 *b->last++ = CR; *b->last++ = LF;
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130
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268
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269 return NGX_OK;
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270 }
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271
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272
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273 static ngx_int_t
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274 ngx_http_memcached_reinit_request(ngx_http_request_t *r)
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275 {
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276 return NGX_OK;
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277 }
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278
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279
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280 static ngx_int_t
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281 ngx_http_memcached_process_header(ngx_http_request_t *r)
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282 {
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146
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283 u_char *p, *len;
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284 ngx_str_t line;
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285 ngx_http_upstream_t *u;
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286 ngx_http_memcached_ctx_t *ctx;
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130
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287
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288 u = r->upstream;
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289
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290 for (p = u->buffer.pos; p < u->buffer.last; p++) {
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291 if (*p == LF) {
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292 goto found;
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293 }
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294 }
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295
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296 return NGX_AGAIN;
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297
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298 found:
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299
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300 *p = '\0';
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301
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302 line.len = p - u->buffer.pos - 1;
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303 line.data = u->buffer.pos;
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304
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305 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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306 "memcached: \"%V\"", &line);
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307
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308 p = u->buffer.pos;
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309
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146
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310 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
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311
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130
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312 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) {
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313
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314 p += sizeof("VALUE ") - 1;
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315
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146
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316 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) {
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130
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317 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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318 "memcached sent invalid key in response \"%V\" "
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319 "for key \"%V\"",
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146
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320 &line, &ctx->key);
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130
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321
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322 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
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323 }
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324
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146
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325 p += ctx->key.len;
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130
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326
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327 if (*p++ != ' ') {
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328 goto no_valid;
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329 }
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330
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331 /* skip flags */
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332
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333 while (*p) {
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334 if (*p++ == ' ') {
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335 goto length;
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336 }
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337 }
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338
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339 goto no_valid;
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340
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341 length:
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342
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343 len = p;
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344
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345 while (*p && *p++ != CR) { /* void */ }
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346
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640
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347 u->headers_in.content_length_n = ngx_atoof(len, p - len - 1);
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348 if (u->headers_in.content_length_n == -1) {
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130
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349 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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350 "memcached sent invalid length in response \"%V\" "
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351 "for key \"%V\"",
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146
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352 &line, &ctx->key);
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130
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353 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
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354 }
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355
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356 u->headers_in.status_n = 200;
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340
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357 u->state->status = 200;
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130
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358 u->buffer.pos = p + 1;
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359
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360 return NGX_OK;
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361 }
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362
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363 if (ngx_strcmp(p, "END\x0d") == 0) {
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364 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
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146
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365 "key: \"%V\" was not found by memcached", &ctx->key);
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130
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366
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367 u->headers_in.status_n = 404;
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340
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368 u->state->status = 404;
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640
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369 u->keepalive = 1;
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130
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370
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371 return NGX_OK;
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372 }
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373
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374 no_valid:
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375
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376 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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377 "memcached sent invalid response: \"%V\"", &line);
|
|
|
378
|
|
|
379 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
|
380 }
|
|
|
381
|
|
|
382
|
|
|
383 static ngx_int_t
|
|
|
384 ngx_http_memcached_filter_init(void *data)
|
|
|
385 {
|
|
|
386 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
387
|
|
|
388 ngx_http_upstream_t *u;
|
|
|
389
|
|
|
390 u = ctx->request->upstream;
|
|
|
391
|
|
|
392 u->length += NGX_HTTP_MEMCACHED_END;
|
|
|
393
|
|
|
394 return NGX_OK;
|
|
|
395 }
|
|
|
396
|
|
|
397
|
|
|
398 static ngx_int_t
|
|
|
399 ngx_http_memcached_filter(void *data, ssize_t bytes)
|
|
|
400 {
|
|
|
401 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
402
|
|
|
403 u_char *last;
|
|
|
404 ngx_buf_t *b;
|
|
|
405 ngx_chain_t *cl, **ll;
|
|
|
406 ngx_http_upstream_t *u;
|
|
|
407
|
|
|
408 u = ctx->request->upstream;
|
|
|
409 b = &u->buffer;
|
|
|
410
|
|
640
|
411 if (u->length == (ssize_t) ctx->rest) {
|
|
130
|
412
|
|
|
413 if (ngx_strncmp(b->last,
|
|
340
|
414 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest,
|
|
566
|
415 bytes)
|
|
340
|
416 != 0)
|
|
130
|
417 {
|
|
|
418 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
419 "memcached sent invalid trailer");
|
|
566
|
420
|
|
|
421 u->length = 0;
|
|
|
422 ctx->rest = 0;
|
|
|
423
|
|
|
424 return NGX_OK;
|
|
130
|
425 }
|
|
|
426
|
|
566
|
427 u->length -= bytes;
|
|
|
428 ctx->rest -= bytes;
|
|
130
|
429
|
|
640
|
430 if (u->length == 0) {
|
|
|
431 u->keepalive = 1;
|
|
|
432 }
|
|
|
433
|
|
130
|
434 return NGX_OK;
|
|
|
435 }
|
|
|
436
|
|
|
437 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
438 ll = &cl->next;
|
|
|
439 }
|
|
|
440
|
|
|
441 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs);
|
|
|
442 if (cl == NULL) {
|
|
|
443 return NGX_ERROR;
|
|
|
444 }
|
|
|
445
|
|
|
446 cl->buf->flush = 1;
|
|
|
447 cl->buf->memory = 1;
|
|
|
448
|
|
|
449 *ll = cl;
|
|
|
450
|
|
340
|
451 last = b->last;
|
|
|
452 cl->buf->pos = last;
|
|
130
|
453 b->last += bytes;
|
|
|
454 cl->buf->last = b->last;
|
|
366
|
455 cl->buf->tag = u->output.tag;
|
|
130
|
456
|
|
|
457 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
|
458 "memcached filter bytes:%z size:%z length:%z rest:%z",
|
|
|
459 bytes, b->last - b->pos, u->length, ctx->rest);
|
|
|
460
|
|
340
|
461 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) {
|
|
130
|
462 u->length -= bytes;
|
|
|
463 return NGX_OK;
|
|
|
464 }
|
|
|
465
|
|
340
|
466 last += u->length - NGX_HTTP_MEMCACHED_END;
|
|
130
|
467
|
|
|
468 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) {
|
|
|
469 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
470 "memcached sent invalid trailer");
|
|
640
|
471
|
|
|
472 b->last = last;
|
|
|
473 cl->buf->last = last;
|
|
|
474 u->length = 0;
|
|
|
475 ctx->rest = 0;
|
|
|
476
|
|
|
477 return NGX_OK;
|
|
130
|
478 }
|
|
|
479
|
|
340
|
480 ctx->rest -= b->last - last;
|
|
130
|
481 b->last = last;
|
|
|
482 cl->buf->last = last;
|
|
|
483 u->length = ctx->rest;
|
|
|
484
|
|
640
|
485 if (u->length == 0) {
|
|
|
486 u->keepalive = 1;
|
|
|
487 }
|
|
|
488
|
|
130
|
489 return NGX_OK;
|
|
|
490 }
|
|
|
491
|
|
|
492
|
|
|
493 static void
|
|
|
494 ngx_http_memcached_abort_request(ngx_http_request_t *r)
|
|
|
495 {
|
|
|
496 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
497 "abort http memcached request");
|
|
|
498 return;
|
|
|
499 }
|
|
|
500
|
|
|
501
|
|
|
502 static void
|
|
|
503 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
|
504 {
|
|
|
505 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
506 "finalize http memcached request");
|
|
|
507 return;
|
|
|
508 }
|
|
|
509
|
|
|
510
|
|
|
511 static void *
|
|
|
512 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf)
|
|
|
513 {
|
|
|
514 ngx_http_memcached_loc_conf_t *conf;
|
|
|
515
|
|
|
516 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t));
|
|
|
517 if (conf == NULL) {
|
|
496
|
518 return NULL;
|
|
130
|
519 }
|
|
|
520
|
|
|
521 /*
|
|
|
522 * set by ngx_pcalloc():
|
|
|
523 *
|
|
|
524 * conf->upstream.bufs.num = 0;
|
|
|
525 * conf->upstream.next_upstream = 0;
|
|
|
526 * conf->upstream.temp_path = NULL;
|
|
|
527 * conf->upstream.uri = { 0, NULL };
|
|
|
528 * conf->upstream.location = NULL;
|
|
|
529 */
|
|
|
530
|
|
|
531 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
532 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
533 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
534
|
|
|
535 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
536
|
|
260
|
537 /* the hardcoded values */
|
|
130
|
538 conf->upstream.cyclic_temp_file = 0;
|
|
178
|
539 conf->upstream.buffering = 0;
|
|
|
540 conf->upstream.ignore_client_abort = 0;
|
|
130
|
541 conf->upstream.send_lowat = 0;
|
|
|
542 conf->upstream.bufs.num = 0;
|
|
|
543 conf->upstream.busy_buffers_size = 0;
|
|
|
544 conf->upstream.max_temp_file_size = 0;
|
|
|
545 conf->upstream.temp_file_write_size = 0;
|
|
206
|
546 conf->upstream.intercept_errors = 1;
|
|
224
|
547 conf->upstream.intercept_404 = 1;
|
|
130
|
548 conf->upstream.pass_request_headers = 0;
|
|
|
549 conf->upstream.pass_request_body = 0;
|
|
|
550
|
|
358
|
551 conf->index = NGX_CONF_UNSET;
|
|
|
552
|
|
130
|
553 return conf;
|
|
|
554 }
|
|
|
555
|
|
|
556
|
|
|
557 static char *
|
|
|
558 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
559 {
|
|
|
560 ngx_http_memcached_loc_conf_t *prev = parent;
|
|
|
561 ngx_http_memcached_loc_conf_t *conf = child;
|
|
|
562
|
|
|
563 ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
|
|
|
564 prev->upstream.connect_timeout, 60000);
|
|
|
565
|
|
|
566 ngx_conf_merge_msec_value(conf->upstream.send_timeout,
|
|
|
567 prev->upstream.send_timeout, 60000);
|
|
|
568
|
|
|
569 ngx_conf_merge_msec_value(conf->upstream.read_timeout,
|
|
|
570 prev->upstream.read_timeout, 60000);
|
|
|
571
|
|
|
572 ngx_conf_merge_size_value(conf->upstream.buffer_size,
|
|
|
573 prev->upstream.buffer_size,
|
|
|
574 (size_t) ngx_pagesize);
|
|
|
575
|
|
|
576 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
|
|
|
577 prev->upstream.next_upstream,
|
|
|
578 (NGX_CONF_BITMASK_SET
|
|
|
579 |NGX_HTTP_UPSTREAM_FT_ERROR
|
|
|
580 |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
|
|
|
581
|
|
214
|
582 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
|
|
|
583 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
|
|
|
584 |NGX_HTTP_UPSTREAM_FT_OFF;
|
|
|
585 }
|
|
|
586
|
|
358
|
587 if (conf->upstream.upstream == NULL) {
|
|
|
588 conf->upstream.upstream = prev->upstream.upstream;
|
|
|
589 }
|
|
|
590
|
|
|
591 if (conf->index == NGX_CONF_UNSET) {
|
|
|
592 conf->index = prev->index;
|
|
|
593 }
|
|
|
594
|
|
130
|
595 return NGX_CONF_OK;
|
|
|
596 }
|
|
|
597
|
|
|
598
|
|
|
599 static char *
|
|
|
600 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
601 {
|
|
430
|
602 ngx_http_memcached_loc_conf_t *mlcf = conf;
|
|
130
|
603
|
|
|
604 ngx_str_t *value;
|
|
252
|
605 ngx_url_t u;
|
|
130
|
606 ngx_http_core_loc_conf_t *clcf;
|
|
|
607
|
|
430
|
608 if (mlcf->upstream.upstream) {
|
|
130
|
609 return "is duplicate";
|
|
|
610 }
|
|
|
611
|
|
|
612 value = cf->args->elts;
|
|
|
613
|
|
252
|
614 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
615
|
|
|
616 u.url = value[1];
|
|
260
|
617 u.no_resolve = 1;
|
|
130
|
618
|
|
430
|
619 mlcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
|
|
|
620 if (mlcf->upstream.upstream == NULL) {
|
|
260
|
621 return NGX_CONF_ERROR;
|
|
130
|
622 }
|
|
|
623
|
|
|
624 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
625
|
|
|
626 clcf->handler = ngx_http_memcached_handler;
|
|
|
627
|
|
|
628 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
|
629 clcf->auto_redirect = 1;
|
|
|
630 }
|
|
|
631
|
|
430
|
632 mlcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key);
|
|
278
|
633
|
|
430
|
634 if (mlcf->index == NGX_ERROR) {
|
|
278
|
635 return NGX_CONF_ERROR;
|
|
|
636 }
|
|
|
637
|
|
130
|
638 return NGX_CONF_OK;
|
|
|
639 }
|
