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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_event.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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260
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42 static char *ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf,
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43 ngx_command_t *cmd, void *conf);
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44 static char *ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf,
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45 ngx_command_t *cmd, void *conf);
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46
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130
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47
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48 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = {
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49 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
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50 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
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51 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
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52 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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214
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53 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
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130
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54 { ngx_null_string, 0 }
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55 };
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56
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57
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58 static ngx_command_t ngx_http_memcached_commands[] = {
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59
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60 { ngx_string("memcached_pass"),
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61 NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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62 ngx_http_memcached_pass,
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63 NGX_HTTP_LOC_CONF_OFFSET,
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64 0,
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65 NULL },
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66
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67 { ngx_string("memcached_connect_timeout"),
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68 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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69 ngx_conf_set_msec_slot,
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70 NGX_HTTP_LOC_CONF_OFFSET,
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71 offsetof(ngx_http_memcached_loc_conf_t, upstream.connect_timeout),
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72 NULL },
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73
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74 { ngx_string("memcached_send_timeout"),
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75 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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76 ngx_conf_set_msec_slot,
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77 NGX_HTTP_LOC_CONF_OFFSET,
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78 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout),
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79 NULL },
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80
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81 { ngx_string("memcached_buffer_size"),
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82 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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83 ngx_conf_set_size_slot,
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84 NGX_HTTP_LOC_CONF_OFFSET,
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85 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size),
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86 NULL },
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87
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88 { ngx_string("memcached_read_timeout"),
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89 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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90 ngx_conf_set_msec_slot,
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91 NGX_HTTP_LOC_CONF_OFFSET,
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92 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout),
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93 NULL },
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94
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95 { ngx_string("memcached_next_upstream"),
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96 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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97 ngx_conf_set_bitmask_slot,
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98 NGX_HTTP_LOC_CONF_OFFSET,
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99 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream),
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100 &ngx_http_memcached_next_upstream_masks },
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101
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102 { ngx_string("memcached_upstream_max_fails"),
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103 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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260
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104 ngx_http_memcached_upstream_max_fails_unsupported,
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105 0,
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106 0,
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130
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107 NULL },
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108
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109 { ngx_string("memcached_upstream_fail_timeout"),
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110 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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260
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111 ngx_http_memcached_upstream_fail_timeout_unsupported,
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112 0,
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113 0,
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130
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114 NULL },
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115
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116 ngx_null_command
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117 };
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118
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119
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216
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120 static ngx_http_module_t ngx_http_memcached_module_ctx = {
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130
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121 NULL, /* preconfiguration */
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122 NULL, /* postconfiguration */
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123
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124 NULL, /* create main configuration */
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125 NULL, /* init main configuration */
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126
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127 NULL, /* create server configuration */
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128 NULL, /* merge server configuration */
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129
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130 ngx_http_memcached_create_loc_conf, /* create location configration */
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131 ngx_http_memcached_merge_loc_conf /* merge location configration */
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132 };
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133
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134
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135 ngx_module_t ngx_http_memcached_module = {
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136 NGX_MODULE_V1,
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137 &ngx_http_memcached_module_ctx, /* module context */
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138 ngx_http_memcached_commands, /* module directives */
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139 NGX_HTTP_MODULE, /* module type */
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140 NULL, /* init master */
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141 NULL, /* init module */
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142 NULL, /* init process */
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143 NULL, /* init thread */
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144 NULL, /* exit thread */
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145 NULL, /* exit process */
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146 NULL, /* exit master */
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147 NGX_MODULE_V1_PADDING
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148 };
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149
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150
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278
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151 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key");
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152
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153
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130
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154 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1)
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155 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF;
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156
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157
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158 static ngx_int_t
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159 ngx_http_memcached_handler(ngx_http_request_t *r)
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160 {
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161 ngx_int_t rc;
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162 ngx_http_upstream_t *u;
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163 ngx_http_memcached_ctx_t *ctx;
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164 ngx_http_memcached_loc_conf_t *mlcf;
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165
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194
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166 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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130
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167 return NGX_HTTP_NOT_ALLOWED;
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168 }
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169
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326
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170 rc = ngx_http_discard_request_body(r);
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130
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171
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326
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172 if (rc != NGX_OK) {
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130
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173 return rc;
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174 }
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175
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176 if (ngx_http_set_content_type(r) != NGX_OK) {
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177 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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178 }
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179
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180 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
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181
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182 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
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183 if (u == NULL) {
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184 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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185 }
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186
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187 u->peer.log = r->connection->log;
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188 u->peer.log_error = NGX_ERROR_ERR;
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189 #if (NGX_THREADS)
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190 u->peer.lock = &r->connection->lock;
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191 #endif
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192
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193 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module;
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194
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195 u->conf = &mlcf->upstream;
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196
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197 u->create_request = ngx_http_memcached_create_request;
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198 u->reinit_request = ngx_http_memcached_reinit_request;
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199 u->process_header = ngx_http_memcached_process_header;
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200 u->abort_request = ngx_http_memcached_abort_request;
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201 u->finalize_request = ngx_http_memcached_finalize_request;
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202
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203 r->upstream = u;
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204
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205 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t));
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206 if (ctx == NULL) {
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207 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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208 }
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209
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210 ctx->rest = NGX_HTTP_MEMCACHED_END;
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211 ctx->request = r;
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212
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146
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213 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module);
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214
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130
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215 u->input_filter_init = ngx_http_memcached_filter_init;
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216 u->input_filter = ngx_http_memcached_filter;
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217 u->input_filter_ctx = ctx;
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218
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219 ngx_http_upstream_init(r);
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220
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221 return NGX_DONE;
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222 }
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223
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224
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225 static ngx_int_t
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226 ngx_http_memcached_create_request(ngx_http_request_t *r)
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227 {
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278
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228 size_t len;
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322
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229 uintptr_t escape;
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278
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230 ngx_buf_t *b;
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231 ngx_chain_t *cl;
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232 ngx_http_memcached_ctx_t *ctx;
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233 ngx_http_variable_value_t *vv;
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234 ngx_http_memcached_loc_conf_t *mlcf;
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235
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236 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
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130
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237
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278
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238 vv = ngx_http_get_indexed_variable(r, mlcf->index);
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239
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240 if (vv == NULL || vv->not_found || vv->len == 0) {
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241 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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242 "the \"$memcached_key\" variable is not set");
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243 return NGX_ERROR;
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244 }
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245
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322
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246 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED);
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247
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248 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1;
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130
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249
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250 b = ngx_create_temp_buf(r->pool, len);
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251 if (b == NULL) {
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252 return NGX_ERROR;
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253 }
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254
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255 cl = ngx_alloc_chain_link(r->pool);
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256 if (cl == NULL) {
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257 return NGX_ERROR;
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258 }
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259
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260 cl->buf = b;
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261 cl->next = NULL;
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262
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263 r->upstream->request_bufs = cl;
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264
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265 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' ';
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266
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146
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267 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
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268
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269 ctx->key.data = b->last;
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270
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322
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271 if (escape == 0) {
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272 b->last = ngx_copy(b->last, vv->data, vv->len);
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273
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274 } else {
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275 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len,
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276 NGX_ESCAPE_MEMCACHED);
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277 }
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130
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278
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146
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279 ctx->key.len = b->last - ctx->key.data;
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130
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280
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281 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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146
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282 "http memcached request: \"%V\"", &ctx->key);
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130
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283
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282
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284 *b->last++ = CR; *b->last++ = LF;
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130
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285
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286 return NGX_OK;
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287 }
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288
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289
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290 static ngx_int_t
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291 ngx_http_memcached_reinit_request(ngx_http_request_t *r)
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292 {
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293 return NGX_OK;
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294 }
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295
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296
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297 static ngx_int_t
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298 ngx_http_memcached_process_header(ngx_http_request_t *r)
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299 {
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146
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300 u_char *p, *len;
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301 ngx_str_t line;
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302 ngx_http_upstream_t *u;
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303 ngx_http_memcached_ctx_t *ctx;
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130
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304
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305 u = r->upstream;
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306
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307 for (p = u->buffer.pos; p < u->buffer.last; p++) {
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308 if (*p == LF) {
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309 goto found;
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310 }
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311 }
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312
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313 return NGX_AGAIN;
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314
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315 found:
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316
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317 *p = '\0';
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318
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319 line.len = p - u->buffer.pos - 1;
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320 line.data = u->buffer.pos;
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321
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322 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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323 "memcached: \"%V\"", &line);
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324
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325 p = u->buffer.pos;
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326
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146
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327 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
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328
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130
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329 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) {
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330
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331 p += sizeof("VALUE ") - 1;
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332
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146
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333 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) {
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130
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334 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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335 "memcached sent invalid key in response \"%V\" "
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336 "for key \"%V\"",
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146
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337 &line, &ctx->key);
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130
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338
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339 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
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340 }
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341
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146
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342 p += ctx->key.len;
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130
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343
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344 if (*p++ != ' ') {
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345 goto no_valid;
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346 }
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347
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348 /* skip flags */
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349
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350 while (*p) {
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351 if (*p++ == ' ') {
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352 goto length;
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353 }
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354 }
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355
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356 goto no_valid;
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357
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358 length:
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359
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360 len = p;
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361
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362 while (*p && *p++ != CR) { /* void */ }
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363
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364 r->headers_out.content_length_n = ngx_atoof(len, p - len - 1);
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365 if (r->headers_out.content_length_n == -1) {
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366 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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367 "memcached sent invalid length in response \"%V\" "
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368 "for key \"%V\"",
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146
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369 &line, &ctx->key);
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130
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370 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
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371 }
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372
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373 u->headers_in.status_n = 200;
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340
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374 u->state->status = 200;
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130
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375 u->buffer.pos = p + 1;
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376
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377 return NGX_OK;
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|
|
378 }
|
|
|
379
|
|
|
380 if (ngx_strcmp(p, "END\x0d") == 0) {
|
|
|
381 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
146
|
382 "key: \"%V\" was not found by memcached", &ctx->key);
|
|
130
|
383
|
|
|
384 u->headers_in.status_n = 404;
|
|
340
|
385 u->state->status = 404;
|
|
130
|
386
|
|
|
387 return NGX_OK;
|
|
|
388 }
|
|
|
389
|
|
|
390 no_valid:
|
|
|
391
|
|
|
392 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
393 "memcached sent invalid response: \"%V\"", &line);
|
|
|
394
|
|
|
395 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
|
396 }
|
|
|
397
|
|
|
398
|
|
|
399 static ngx_int_t
|
|
|
400 ngx_http_memcached_filter_init(void *data)
|
|
|
401 {
|
|
|
402 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
403
|
|
|
404 ngx_http_upstream_t *u;
|
|
|
405
|
|
|
406 u = ctx->request->upstream;
|
|
|
407
|
|
|
408 u->length += NGX_HTTP_MEMCACHED_END;
|
|
|
409
|
|
|
410 return NGX_OK;
|
|
|
411 }
|
|
|
412
|
|
|
413
|
|
|
414 static ngx_int_t
|
|
|
415 ngx_http_memcached_filter(void *data, ssize_t bytes)
|
|
|
416 {
|
|
|
417 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
418
|
|
|
419 u_char *last;
|
|
|
420 ngx_buf_t *b;
|
|
|
421 ngx_chain_t *cl, **ll;
|
|
|
422 ngx_http_upstream_t *u;
|
|
|
423
|
|
|
424 u = ctx->request->upstream;
|
|
|
425 b = &u->buffer;
|
|
|
426
|
|
|
427 if (u->length == ctx->rest) {
|
|
|
428
|
|
|
429 if (ngx_strncmp(b->last,
|
|
340
|
430 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest,
|
|
|
431 ctx->rest)
|
|
|
432 != 0)
|
|
130
|
433 {
|
|
|
434 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
435 "memcached sent invalid trailer");
|
|
|
436 }
|
|
|
437
|
|
340
|
438 u->length = 0;
|
|
|
439 ctx->rest = 0;
|
|
130
|
440
|
|
|
441 return NGX_OK;
|
|
|
442 }
|
|
|
443
|
|
|
444 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
445 ll = &cl->next;
|
|
|
446 }
|
|
|
447
|
|
|
448 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs);
|
|
|
449 if (cl == NULL) {
|
|
|
450 return NGX_ERROR;
|
|
|
451 }
|
|
|
452
|
|
|
453 cl->buf->flush = 1;
|
|
|
454 cl->buf->memory = 1;
|
|
|
455
|
|
|
456 *ll = cl;
|
|
|
457
|
|
340
|
458 last = b->last;
|
|
|
459 cl->buf->pos = last;
|
|
130
|
460 b->last += bytes;
|
|
|
461 cl->buf->last = b->last;
|
|
|
462
|
|
|
463 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
|
464 "memcached filter bytes:%z size:%z length:%z rest:%z",
|
|
|
465 bytes, b->last - b->pos, u->length, ctx->rest);
|
|
|
466
|
|
340
|
467 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) {
|
|
130
|
468 u->length -= bytes;
|
|
|
469 return NGX_OK;
|
|
|
470 }
|
|
|
471
|
|
340
|
472 last += u->length - NGX_HTTP_MEMCACHED_END;
|
|
130
|
473
|
|
|
474 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) {
|
|
|
475 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
476 "memcached sent invalid trailer");
|
|
|
477 }
|
|
|
478
|
|
340
|
479 ctx->rest -= b->last - last;
|
|
130
|
480 b->last = last;
|
|
|
481 cl->buf->last = last;
|
|
|
482 u->length = ctx->rest;
|
|
|
483
|
|
|
484 return NGX_OK;
|
|
|
485 }
|
|
|
486
|
|
|
487
|
|
|
488 static void
|
|
|
489 ngx_http_memcached_abort_request(ngx_http_request_t *r)
|
|
|
490 {
|
|
|
491 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
492 "abort http memcached request");
|
|
|
493 return;
|
|
|
494 }
|
|
|
495
|
|
|
496
|
|
|
497 static void
|
|
|
498 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
|
499 {
|
|
|
500 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
501 "finalize http memcached request");
|
|
|
502 return;
|
|
|
503 }
|
|
|
504
|
|
|
505
|
|
|
506 static void *
|
|
|
507 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf)
|
|
|
508 {
|
|
|
509 ngx_http_memcached_loc_conf_t *conf;
|
|
|
510
|
|
|
511 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t));
|
|
|
512 if (conf == NULL) {
|
|
|
513 return NGX_CONF_ERROR;
|
|
|
514 }
|
|
|
515
|
|
|
516 /*
|
|
|
517 * set by ngx_pcalloc():
|
|
|
518 *
|
|
|
519 * conf->upstream.bufs.num = 0;
|
|
|
520 * conf->upstream.next_upstream = 0;
|
|
|
521 * conf->upstream.temp_path = NULL;
|
|
|
522 * conf->upstream.schema = { 0, NULL };
|
|
|
523 * conf->upstream.uri = { 0, NULL };
|
|
|
524 * conf->upstream.location = NULL;
|
|
|
525 *
|
|
278
|
526 * conf->index = 0;
|
|
130
|
527 */
|
|
|
528
|
|
|
529 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
530 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
531 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC;
|
|
|
532
|
|
|
533 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE;
|
|
|
534
|
|
260
|
535 /* the hardcoded values */
|
|
130
|
536 conf->upstream.cyclic_temp_file = 0;
|
|
178
|
537 conf->upstream.buffering = 0;
|
|
|
538 conf->upstream.ignore_client_abort = 0;
|
|
130
|
539 conf->upstream.send_lowat = 0;
|
|
|
540 conf->upstream.bufs.num = 0;
|
|
|
541 conf->upstream.busy_buffers_size = 0;
|
|
|
542 conf->upstream.max_temp_file_size = 0;
|
|
|
543 conf->upstream.temp_file_write_size = 0;
|
|
206
|
544 conf->upstream.intercept_errors = 1;
|
|
224
|
545 conf->upstream.intercept_404 = 1;
|
|
130
|
546 conf->upstream.pass_request_headers = 0;
|
|
|
547 conf->upstream.pass_request_body = 0;
|
|
|
548
|
|
|
549 return conf;
|
|
|
550 }
|
|
|
551
|
|
|
552
|
|
|
553 static char *
|
|
|
554 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
555 {
|
|
|
556 ngx_http_memcached_loc_conf_t *prev = parent;
|
|
|
557 ngx_http_memcached_loc_conf_t *conf = child;
|
|
|
558
|
|
|
559 ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
|
|
|
560 prev->upstream.connect_timeout, 60000);
|
|
|
561
|
|
|
562 ngx_conf_merge_msec_value(conf->upstream.send_timeout,
|
|
|
563 prev->upstream.send_timeout, 60000);
|
|
|
564
|
|
|
565 ngx_conf_merge_msec_value(conf->upstream.read_timeout,
|
|
|
566 prev->upstream.read_timeout, 60000);
|
|
|
567
|
|
|
568 ngx_conf_merge_size_value(conf->upstream.buffer_size,
|
|
|
569 prev->upstream.buffer_size,
|
|
|
570 (size_t) ngx_pagesize);
|
|
|
571
|
|
|
572 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
|
|
|
573 prev->upstream.next_upstream,
|
|
|
574 (NGX_CONF_BITMASK_SET
|
|
|
575 |NGX_HTTP_UPSTREAM_FT_ERROR
|
|
|
576 |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
|
|
|
577
|
|
214
|
578 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
|
|
|
579 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
|
|
|
580 |NGX_HTTP_UPSTREAM_FT_OFF;
|
|
|
581 }
|
|
|
582
|
|
130
|
583 return NGX_CONF_OK;
|
|
|
584 }
|
|
|
585
|
|
|
586
|
|
|
587 static char *
|
|
|
588 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
589 {
|
|
|
590 ngx_http_memcached_loc_conf_t *lcf = conf;
|
|
|
591
|
|
|
592 ngx_str_t *value;
|
|
252
|
593 ngx_url_t u;
|
|
130
|
594 ngx_http_core_loc_conf_t *clcf;
|
|
|
595
|
|
|
596 if (lcf->upstream.schema.len) {
|
|
|
597 return "is duplicate";
|
|
|
598 }
|
|
|
599
|
|
|
600 value = cf->args->elts;
|
|
|
601
|
|
252
|
602 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
603
|
|
|
604 u.url = value[1];
|
|
260
|
605 u.no_resolve = 1;
|
|
130
|
606
|
|
260
|
607 lcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
|
|
|
608 if (lcf->upstream.upstream == NULL) {
|
|
|
609 return NGX_CONF_ERROR;
|
|
130
|
610 }
|
|
|
611
|
|
|
612 lcf->upstream.schema.len = sizeof("memcached://") - 1;
|
|
|
613 lcf->upstream.schema.data = (u_char *) "memcached://";
|
|
|
614
|
|
|
615 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
616
|
|
|
617 clcf->handler = ngx_http_memcached_handler;
|
|
|
618
|
|
|
619 lcf->upstream.location = clcf->name;
|
|
|
620
|
|
|
621 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
|
622 clcf->auto_redirect = 1;
|
|
|
623 }
|
|
|
624
|
|
278
|
625 lcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key);
|
|
|
626
|
|
|
627 if (lcf->index == NGX_ERROR) {
|
|
|
628 return NGX_CONF_ERROR;
|
|
|
629 }
|
|
|
630
|
|
130
|
631 return NGX_CONF_OK;
|
|
|
632 }
|
|
260
|
633
|
|
|
634
|
|
|
635 static char *
|
|
|
636 ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf,
|
|
|
637 ngx_command_t *cmd, void *conf)
|
|
|
638 {
|
|
|
639 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
640 "\"memcached_upstream_max_fails\" is not supported, "
|
|
|
641 "use the \"max_fails\" parameter of the \"server\" directive ",
|
|
|
642 "inside the \"upstream\" block");
|
|
|
643
|
|
|
644 return NGX_CONF_ERROR;
|
|
|
645 }
|
|
|
646
|
|
|
647
|
|
|
648 static char *
|
|
|
649 ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf,
|
|
|
650 ngx_command_t *cmd, void *conf)
|
|
|
651 {
|
|
|
652 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
653 "\"memcached_upstream_fail_timeout\" is not supported, "
|
|
|
654 "use the \"fail_timeout\" parameter of the \"server\" directive ",
|
|
|
655 "inside the \"upstream\" block");
|
|
|
656
|
|
|
657 return NGX_CONF_ERROR;
|
|
|
658 }
|
