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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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660
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4 * Copyright (C) Nginx, Inc.
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130
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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11
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12
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13 typedef struct {
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14 ngx_http_upstream_conf_t upstream;
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278
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15 ngx_int_t index;
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130
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16 } ngx_http_memcached_loc_conf_t;
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17
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18
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19 typedef struct {
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20 size_t rest;
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21 ngx_http_request_t *request;
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146
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22 ngx_str_t key;
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130
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23 } ngx_http_memcached_ctx_t;
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24
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25
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26 static ngx_int_t ngx_http_memcached_create_request(ngx_http_request_t *r);
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27 static ngx_int_t ngx_http_memcached_reinit_request(ngx_http_request_t *r);
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28 static ngx_int_t ngx_http_memcached_process_header(ngx_http_request_t *r);
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29 static ngx_int_t ngx_http_memcached_filter_init(void *data);
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30 static ngx_int_t ngx_http_memcached_filter(void *data, ssize_t bytes);
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31 static void ngx_http_memcached_abort_request(ngx_http_request_t *r);
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32 static void ngx_http_memcached_finalize_request(ngx_http_request_t *r,
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33 ngx_int_t rc);
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34
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35 static void *ngx_http_memcached_create_loc_conf(ngx_conf_t *cf);
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36 static char *ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf,
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37 void *parent, void *child);
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38
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39 static char *ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd,
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40 void *conf);
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41
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42
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43 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = {
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44 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
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45 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
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46 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
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47 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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214
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48 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
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130
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49 { ngx_null_string, 0 }
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50 };
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51
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52
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53 static ngx_command_t ngx_http_memcached_commands[] = {
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54
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55 { ngx_string("memcached_pass"),
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358
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56 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
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130
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57 ngx_http_memcached_pass,
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58 NGX_HTTP_LOC_CONF_OFFSET,
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59 0,
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60 NULL },
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61
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540
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62 { ngx_string("memcached_bind"),
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63 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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558
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64 ngx_http_upstream_bind_set_slot,
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540
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65 NGX_HTTP_LOC_CONF_OFFSET,
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66 offsetof(ngx_http_memcached_loc_conf_t, upstream.local),
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67 NULL },
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68
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130
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69 { ngx_string("memcached_connect_timeout"),
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70 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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71 ngx_conf_set_msec_slot,
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72 NGX_HTTP_LOC_CONF_OFFSET,
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73 offsetof(ngx_http_memcached_loc_conf_t, upstream.connect_timeout),
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74 NULL },
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75
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76 { ngx_string("memcached_send_timeout"),
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77 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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78 ngx_conf_set_msec_slot,
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79 NGX_HTTP_LOC_CONF_OFFSET,
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80 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout),
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81 NULL },
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82
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83 { ngx_string("memcached_buffer_size"),
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84 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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85 ngx_conf_set_size_slot,
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86 NGX_HTTP_LOC_CONF_OFFSET,
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87 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size),
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88 NULL },
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89
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90 { ngx_string("memcached_read_timeout"),
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91 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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92 ngx_conf_set_msec_slot,
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93 NGX_HTTP_LOC_CONF_OFFSET,
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94 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout),
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95 NULL },
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96
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97 { ngx_string("memcached_next_upstream"),
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98 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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99 ngx_conf_set_bitmask_slot,
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100 NGX_HTTP_LOC_CONF_OFFSET,
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101 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream),
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102 &ngx_http_memcached_next_upstream_masks },
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103
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104 ngx_null_command
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105 };
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106
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107
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216
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108 static ngx_http_module_t ngx_http_memcached_module_ctx = {
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130
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109 NULL, /* preconfiguration */
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110 NULL, /* postconfiguration */
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111
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112 NULL, /* create main configuration */
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113 NULL, /* init main configuration */
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114
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115 NULL, /* create server configuration */
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116 NULL, /* merge server configuration */
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117
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664
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118 ngx_http_memcached_create_loc_conf, /* create location configuration */
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119 ngx_http_memcached_merge_loc_conf /* merge location configuration */
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130
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120 };
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121
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122
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123 ngx_module_t ngx_http_memcached_module = {
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124 NGX_MODULE_V1,
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125 &ngx_http_memcached_module_ctx, /* module context */
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126 ngx_http_memcached_commands, /* module directives */
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127 NGX_HTTP_MODULE, /* module type */
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128 NULL, /* init master */
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129 NULL, /* init module */
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130 NULL, /* init process */
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131 NULL, /* init thread */
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132 NULL, /* exit thread */
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133 NULL, /* exit process */
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134 NULL, /* exit master */
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135 NGX_MODULE_V1_PADDING
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136 };
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137
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138
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278
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139 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key");
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140
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141
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130
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142 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1)
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143 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF;
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144
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145
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146 static ngx_int_t
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147 ngx_http_memcached_handler(ngx_http_request_t *r)
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148 {
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149 ngx_int_t rc;
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150 ngx_http_upstream_t *u;
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151 ngx_http_memcached_ctx_t *ctx;
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152 ngx_http_memcached_loc_conf_t *mlcf;
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153
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194
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154 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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130
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155 return NGX_HTTP_NOT_ALLOWED;
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156 }
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157
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326
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158 rc = ngx_http_discard_request_body(r);
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130
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159
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326
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160 if (rc != NGX_OK) {
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130
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161 return rc;
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162 }
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163
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164 if (ngx_http_set_content_type(r) != NGX_OK) {
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165 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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166 }
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167
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510
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168 if (ngx_http_upstream_create(r) != NGX_OK) {
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130
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169 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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170 }
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171
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510
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172 u = r->upstream;
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173
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570
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174 ngx_str_set(&u->schema, "memcached://");
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510
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175 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module;
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130
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176
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510
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177 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
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130
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178
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179 u->conf = &mlcf->upstream;
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180
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181 u->create_request = ngx_http_memcached_create_request;
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182 u->reinit_request = ngx_http_memcached_reinit_request;
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183 u->process_header = ngx_http_memcached_process_header;
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184 u->abort_request = ngx_http_memcached_abort_request;
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185 u->finalize_request = ngx_http_memcached_finalize_request;
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186
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187 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t));
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188 if (ctx == NULL) {
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189 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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190 }
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191
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192 ctx->rest = NGX_HTTP_MEMCACHED_END;
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193 ctx->request = r;
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194
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146
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195 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module);
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196
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130
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197 u->input_filter_init = ngx_http_memcached_filter_init;
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198 u->input_filter = ngx_http_memcached_filter;
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199 u->input_filter_ctx = ctx;
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200
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520
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201 r->main->count++;
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202
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130
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203 ngx_http_upstream_init(r);
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204
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205 return NGX_DONE;
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206 }
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207
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208
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209 static ngx_int_t
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210 ngx_http_memcached_create_request(ngx_http_request_t *r)
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211 {
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278
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212 size_t len;
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322
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213 uintptr_t escape;
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278
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214 ngx_buf_t *b;
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215 ngx_chain_t *cl;
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216 ngx_http_memcached_ctx_t *ctx;
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217 ngx_http_variable_value_t *vv;
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218 ngx_http_memcached_loc_conf_t *mlcf;
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219
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220 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
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130
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221
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278
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222 vv = ngx_http_get_indexed_variable(r, mlcf->index);
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223
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224 if (vv == NULL || vv->not_found || vv->len == 0) {
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225 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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226 "the \"$memcached_key\" variable is not set");
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227 return NGX_ERROR;
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228 }
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229
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322
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230 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED);
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231
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232 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1;
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130
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233
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234 b = ngx_create_temp_buf(r->pool, len);
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235 if (b == NULL) {
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236 return NGX_ERROR;
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237 }
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238
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239 cl = ngx_alloc_chain_link(r->pool);
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240 if (cl == NULL) {
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241 return NGX_ERROR;
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242 }
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243
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244 cl->buf = b;
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245 cl->next = NULL;
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246
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247 r->upstream->request_bufs = cl;
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248
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249 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' ';
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250
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146
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251 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
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252
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253 ctx->key.data = b->last;
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254
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322
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255 if (escape == 0) {
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256 b->last = ngx_copy(b->last, vv->data, vv->len);
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257
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258 } else {
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259 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len,
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260 NGX_ESCAPE_MEMCACHED);
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261 }
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130
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262
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146
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263 ctx->key.len = b->last - ctx->key.data;
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130
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264
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265 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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146
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266 "http memcached request: \"%V\"", &ctx->key);
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130
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267
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282
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268 *b->last++ = CR; *b->last++ = LF;
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130
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269
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270 return NGX_OK;
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271 }
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272
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273
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274 static ngx_int_t
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275 ngx_http_memcached_reinit_request(ngx_http_request_t *r)
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276 {
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277 return NGX_OK;
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278 }
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279
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280
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281 static ngx_int_t
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282 ngx_http_memcached_process_header(ngx_http_request_t *r)
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283 {
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146
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284 u_char *p, *len;
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285 ngx_str_t line;
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286 ngx_http_upstream_t *u;
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287 ngx_http_memcached_ctx_t *ctx;
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130
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288
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289 u = r->upstream;
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290
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291 for (p = u->buffer.pos; p < u->buffer.last; p++) {
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292 if (*p == LF) {
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293 goto found;
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294 }
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295 }
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296
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297 return NGX_AGAIN;
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298
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299 found:
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300
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301 *p = '\0';
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302
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303 line.len = p - u->buffer.pos - 1;
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304 line.data = u->buffer.pos;
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305
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306 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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307 "memcached: \"%V\"", &line);
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308
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309 p = u->buffer.pos;
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310
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146
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311 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
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312
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130
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313 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) {
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314
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315 p += sizeof("VALUE ") - 1;
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316
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146
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317 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) {
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130
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318 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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319 "memcached sent invalid key in response \"%V\" "
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320 "for key \"%V\"",
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146
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321 &line, &ctx->key);
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130
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322
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323 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
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324 }
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325
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146
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326 p += ctx->key.len;
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130
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327
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328 if (*p++ != ' ') {
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329 goto no_valid;
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330 }
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331
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332 /* skip flags */
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333
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334 while (*p) {
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335 if (*p++ == ' ') {
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336 goto length;
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337 }
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338 }
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339
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340 goto no_valid;
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341
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342 length:
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343
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344 len = p;
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345
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346 while (*p && *p++ != CR) { /* void */ }
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347
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640
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348 u->headers_in.content_length_n = ngx_atoof(len, p - len - 1);
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349 if (u->headers_in.content_length_n == -1) {
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130
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350 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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351 "memcached sent invalid length in response \"%V\" "
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352 "for key \"%V\"",
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146
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353 &line, &ctx->key);
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130
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354 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
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355 }
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356
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357 u->headers_in.status_n = 200;
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340
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358 u->state->status = 200;
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130
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359 u->buffer.pos = p + 1;
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360
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361 return NGX_OK;
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362 }
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363
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364 if (ngx_strcmp(p, "END\x0d") == 0) {
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365 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
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146
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366 "key: \"%V\" was not found by memcached", &ctx->key);
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130
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367
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368 u->headers_in.status_n = 404;
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340
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369 u->state->status = 404;
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640
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370 u->keepalive = 1;
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130
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371
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372 return NGX_OK;
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373 }
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374
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375 no_valid:
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376
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377 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
378 "memcached sent invalid response: \"%V\"", &line);
|
|
|
379
|
|
|
380 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
|
381 }
|
|
|
382
|
|
|
383
|
|
|
384 static ngx_int_t
|
|
|
385 ngx_http_memcached_filter_init(void *data)
|
|
|
386 {
|
|
|
387 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
388
|
|
|
389 ngx_http_upstream_t *u;
|
|
|
390
|
|
|
391 u = ctx->request->upstream;
|
|
|
392
|
|
|
393 u->length += NGX_HTTP_MEMCACHED_END;
|
|
|
394
|
|
|
395 return NGX_OK;
|
|
|
396 }
|
|
|
397
|
|
|
398
|
|
|
399 static ngx_int_t
|
|
|
400 ngx_http_memcached_filter(void *data, ssize_t bytes)
|
|
|
401 {
|
|
|
402 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
403
|
|
|
404 u_char *last;
|
|
|
405 ngx_buf_t *b;
|
|
|
406 ngx_chain_t *cl, **ll;
|
|
|
407 ngx_http_upstream_t *u;
|
|
|
408
|
|
|
409 u = ctx->request->upstream;
|
|
|
410 b = &u->buffer;
|
|
|
411
|
|
640
|
412 if (u->length == (ssize_t) ctx->rest) {
|
|
130
|
413
|
|
|
414 if (ngx_strncmp(b->last,
|
|
340
|
415 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest,
|
|
566
|
416 bytes)
|
|
340
|
417 != 0)
|
|
130
|
418 {
|
|
|
419 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
420 "memcached sent invalid trailer");
|
|
566
|
421
|
|
|
422 u->length = 0;
|
|
|
423 ctx->rest = 0;
|
|
|
424
|
|
|
425 return NGX_OK;
|
|
130
|
426 }
|
|
|
427
|
|
566
|
428 u->length -= bytes;
|
|
|
429 ctx->rest -= bytes;
|
|
130
|
430
|
|
640
|
431 if (u->length == 0) {
|
|
|
432 u->keepalive = 1;
|
|
|
433 }
|
|
|
434
|
|
130
|
435 return NGX_OK;
|
|
|
436 }
|
|
|
437
|
|
|
438 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
439 ll = &cl->next;
|
|
|
440 }
|
|
|
441
|
|
|
442 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs);
|
|
|
443 if (cl == NULL) {
|
|
|
444 return NGX_ERROR;
|
|
|
445 }
|
|
|
446
|
|
|
447 cl->buf->flush = 1;
|
|
|
448 cl->buf->memory = 1;
|
|
|
449
|
|
|
450 *ll = cl;
|
|
|
451
|
|
340
|
452 last = b->last;
|
|
|
453 cl->buf->pos = last;
|
|
130
|
454 b->last += bytes;
|
|
|
455 cl->buf->last = b->last;
|
|
366
|
456 cl->buf->tag = u->output.tag;
|
|
130
|
457
|
|
|
458 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
|
459 "memcached filter bytes:%z size:%z length:%z rest:%z",
|
|
|
460 bytes, b->last - b->pos, u->length, ctx->rest);
|
|
|
461
|
|
340
|
462 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) {
|
|
130
|
463 u->length -= bytes;
|
|
|
464 return NGX_OK;
|
|
|
465 }
|
|
|
466
|
|
340
|
467 last += u->length - NGX_HTTP_MEMCACHED_END;
|
|
130
|
468
|
|
|
469 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) {
|
|
|
470 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
471 "memcached sent invalid trailer");
|
|
640
|
472
|
|
|
473 b->last = last;
|
|
|
474 cl->buf->last = last;
|
|
|
475 u->length = 0;
|
|
|
476 ctx->rest = 0;
|
|
|
477
|
|
|
478 return NGX_OK;
|
|
130
|
479 }
|
|
|
480
|
|
340
|
481 ctx->rest -= b->last - last;
|
|
130
|
482 b->last = last;
|
|
|
483 cl->buf->last = last;
|
|
|
484 u->length = ctx->rest;
|
|
|
485
|
|
640
|
486 if (u->length == 0) {
|
|
|
487 u->keepalive = 1;
|
|
|
488 }
|
|
|
489
|
|
130
|
490 return NGX_OK;
|
|
|
491 }
|
|
|
492
|
|
|
493
|
|
|
494 static void
|
|
|
495 ngx_http_memcached_abort_request(ngx_http_request_t *r)
|
|
|
496 {
|
|
|
497 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
498 "abort http memcached request");
|
|
|
499 return;
|
|
|
500 }
|
|
|
501
|
|
|
502
|
|
|
503 static void
|
|
|
504 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
|
505 {
|
|
|
506 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
507 "finalize http memcached request");
|
|
|
508 return;
|
|
|
509 }
|
|
|
510
|
|
|
511
|
|
|
512 static void *
|
|
|
513 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf)
|
|
|
514 {
|
|
|
515 ngx_http_memcached_loc_conf_t *conf;
|
|
|
516
|
|
|
517 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t));
|
|
|
518 if (conf == NULL) {
|
|
496
|
519 return NULL;
|
|
130
|
520 }
|
|
|
521
|
|
|
522 /*
|
|
|
523 * set by ngx_pcalloc():
|
|
|
524 *
|
|
|
525 * conf->upstream.bufs.num = 0;
|
|
|
526 * conf->upstream.next_upstream = 0;
|
|
|
527 * conf->upstream.temp_path = NULL;
|
|
|
528 * conf->upstream.uri = { 0, NULL };
|
|
|
529 * conf->upstream.location = NULL;
|
|
|
530 */
|
|
|
531
|
|
|
532 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
533 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
534 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
535
|
|
|
536 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
537
|
|
260
|
538 /* the hardcoded values */
|
|
130
|
539 conf->upstream.cyclic_temp_file = 0;
|
|
178
|
540 conf->upstream.buffering = 0;
|
|
|
541 conf->upstream.ignore_client_abort = 0;
|
|
130
|
542 conf->upstream.send_lowat = 0;
|
|
|
543 conf->upstream.bufs.num = 0;
|
|
|
544 conf->upstream.busy_buffers_size = 0;
|
|
|
545 conf->upstream.max_temp_file_size = 0;
|
|
|
546 conf->upstream.temp_file_write_size = 0;
|
|
206
|
547 conf->upstream.intercept_errors = 1;
|
|
224
|
548 conf->upstream.intercept_404 = 1;
|
|
130
|
549 conf->upstream.pass_request_headers = 0;
|
|
|
550 conf->upstream.pass_request_body = 0;
|
|
|
551
|
|
358
|
552 conf->index = NGX_CONF_UNSET;
|
|
|
553
|
|
130
|
554 return conf;
|
|
|
555 }
|
|
|
556
|
|
|
557
|
|
|
558 static char *
|
|
|
559 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
560 {
|
|
|
561 ngx_http_memcached_loc_conf_t *prev = parent;
|
|
|
562 ngx_http_memcached_loc_conf_t *conf = child;
|
|
|
563
|
|
|
564 ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
|
|
|
565 prev->upstream.connect_timeout, 60000);
|
|
|
566
|
|
|
567 ngx_conf_merge_msec_value(conf->upstream.send_timeout,
|
|
|
568 prev->upstream.send_timeout, 60000);
|
|
|
569
|
|
|
570 ngx_conf_merge_msec_value(conf->upstream.read_timeout,
|
|
|
571 prev->upstream.read_timeout, 60000);
|
|
|
572
|
|
|
573 ngx_conf_merge_size_value(conf->upstream.buffer_size,
|
|
|
574 prev->upstream.buffer_size,
|
|
|
575 (size_t) ngx_pagesize);
|
|
|
576
|
|
|
577 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
|
|
|
578 prev->upstream.next_upstream,
|
|
|
579 (NGX_CONF_BITMASK_SET
|
|
|
580 |NGX_HTTP_UPSTREAM_FT_ERROR
|
|
|
581 |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
|
|
|
582
|
|
214
|
583 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
|
|
|
584 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
|
|
|
585 |NGX_HTTP_UPSTREAM_FT_OFF;
|
|
|
586 }
|
|
|
587
|
|
358
|
588 if (conf->upstream.upstream == NULL) {
|
|
|
589 conf->upstream.upstream = prev->upstream.upstream;
|
|
|
590 }
|
|
|
591
|
|
|
592 if (conf->index == NGX_CONF_UNSET) {
|
|
|
593 conf->index = prev->index;
|
|
|
594 }
|
|
|
595
|
|
130
|
596 return NGX_CONF_OK;
|
|
|
597 }
|
|
|
598
|
|
|
599
|
|
|
600 static char *
|
|
|
601 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
602 {
|
|
430
|
603 ngx_http_memcached_loc_conf_t *mlcf = conf;
|
|
130
|
604
|
|
|
605 ngx_str_t *value;
|
|
252
|
606 ngx_url_t u;
|
|
130
|
607 ngx_http_core_loc_conf_t *clcf;
|
|
|
608
|
|
430
|
609 if (mlcf->upstream.upstream) {
|
|
130
|
610 return "is duplicate";
|
|
|
611 }
|
|
|
612
|
|
|
613 value = cf->args->elts;
|
|
|
614
|
|
252
|
615 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
616
|
|
|
617 u.url = value[1];
|
|
260
|
618 u.no_resolve = 1;
|
|
130
|
619
|
|
430
|
620 mlcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
|
|
|
621 if (mlcf->upstream.upstream == NULL) {
|
|
260
|
622 return NGX_CONF_ERROR;
|
|
130
|
623 }
|
|
|
624
|
|
|
625 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
626
|
|
|
627 clcf->handler = ngx_http_memcached_handler;
|
|
|
628
|
|
|
629 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
|
630 clcf->auto_redirect = 1;
|
|
|
631 }
|
|
|
632
|
|
430
|
633 mlcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key);
|
|
278
|
634
|
|
430
|
635 if (mlcf->index == NGX_ERROR) {
|
|
278
|
636 return NGX_CONF_ERROR;
|
|
|
637 }
|
|
|
638
|
|
130
|
639 return NGX_CONF_OK;
|
|
|
640 }
|
