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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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260
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41 static char *ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf,
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42 ngx_command_t *cmd, void *conf);
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43 static char *ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf,
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44 ngx_command_t *cmd, void *conf);
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45
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130
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46
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47 static ngx_conf_bitmask_t ngx_http_memcached_next_upstream_masks[] = {
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48 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR },
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49 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT },
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50 { ngx_string("invalid_response"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER },
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51 { ngx_string("not_found"), NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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214
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52 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF },
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130
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53 { ngx_null_string, 0 }
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54 };
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55
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56
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57 static ngx_command_t ngx_http_memcached_commands[] = {
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58
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59 { ngx_string("memcached_pass"),
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358
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60 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1,
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130
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61 ngx_http_memcached_pass,
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62 NGX_HTTP_LOC_CONF_OFFSET,
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63 0,
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64 NULL },
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65
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66 { ngx_string("memcached_connect_timeout"),
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67 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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68 ngx_conf_set_msec_slot,
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69 NGX_HTTP_LOC_CONF_OFFSET,
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70 offsetof(ngx_http_memcached_loc_conf_t, upstream.connect_timeout),
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71 NULL },
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72
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73 { ngx_string("memcached_send_timeout"),
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74 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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75 ngx_conf_set_msec_slot,
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76 NGX_HTTP_LOC_CONF_OFFSET,
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77 offsetof(ngx_http_memcached_loc_conf_t, upstream.send_timeout),
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78 NULL },
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79
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80 { ngx_string("memcached_buffer_size"),
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81 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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82 ngx_conf_set_size_slot,
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83 NGX_HTTP_LOC_CONF_OFFSET,
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84 offsetof(ngx_http_memcached_loc_conf_t, upstream.buffer_size),
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85 NULL },
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86
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87 { ngx_string("memcached_read_timeout"),
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88 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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89 ngx_conf_set_msec_slot,
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90 NGX_HTTP_LOC_CONF_OFFSET,
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91 offsetof(ngx_http_memcached_loc_conf_t, upstream.read_timeout),
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92 NULL },
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93
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94 { ngx_string("memcached_next_upstream"),
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95 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
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96 ngx_conf_set_bitmask_slot,
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97 NGX_HTTP_LOC_CONF_OFFSET,
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98 offsetof(ngx_http_memcached_loc_conf_t, upstream.next_upstream),
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99 &ngx_http_memcached_next_upstream_masks },
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100
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101 { ngx_string("memcached_upstream_max_fails"),
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102 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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260
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103 ngx_http_memcached_upstream_max_fails_unsupported,
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104 0,
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105 0,
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130
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106 NULL },
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107
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108 { ngx_string("memcached_upstream_fail_timeout"),
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109 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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260
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110 ngx_http_memcached_upstream_fail_timeout_unsupported,
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111 0,
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112 0,
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130
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113 NULL },
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114
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115 ngx_null_command
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116 };
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117
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118
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216
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119 static ngx_http_module_t ngx_http_memcached_module_ctx = {
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130
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120 NULL, /* preconfiguration */
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121 NULL, /* postconfiguration */
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122
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123 NULL, /* create main configuration */
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124 NULL, /* init main configuration */
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125
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126 NULL, /* create server configuration */
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127 NULL, /* merge server configuration */
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128
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129 ngx_http_memcached_create_loc_conf, /* create location configration */
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130 ngx_http_memcached_merge_loc_conf /* merge location configration */
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131 };
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132
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133
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134 ngx_module_t ngx_http_memcached_module = {
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135 NGX_MODULE_V1,
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136 &ngx_http_memcached_module_ctx, /* module context */
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137 ngx_http_memcached_commands, /* module directives */
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138 NGX_HTTP_MODULE, /* module type */
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139 NULL, /* init master */
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140 NULL, /* init module */
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141 NULL, /* init process */
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142 NULL, /* init thread */
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143 NULL, /* exit thread */
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144 NULL, /* exit process */
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145 NULL, /* exit master */
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146 NGX_MODULE_V1_PADDING
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147 };
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148
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149
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278
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150 static ngx_str_t ngx_http_memcached_key = ngx_string("memcached_key");
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151
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152
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130
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153 #define NGX_HTTP_MEMCACHED_END (sizeof(ngx_http_memcached_end) - 1)
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154 static u_char ngx_http_memcached_end[] = CRLF "END" CRLF;
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155
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156
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157 static ngx_int_t
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158 ngx_http_memcached_handler(ngx_http_request_t *r)
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159 {
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160 ngx_int_t rc;
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161 ngx_http_upstream_t *u;
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162 ngx_http_memcached_ctx_t *ctx;
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163 ngx_http_memcached_loc_conf_t *mlcf;
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164
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194
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165 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
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130
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166 return NGX_HTTP_NOT_ALLOWED;
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167 }
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168
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326
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169 rc = ngx_http_discard_request_body(r);
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130
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170
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326
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171 if (rc != NGX_OK) {
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130
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172 return rc;
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173 }
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174
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175 if (ngx_http_set_content_type(r) != NGX_OK) {
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176 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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177 }
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178
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179 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
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180
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181 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
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182 if (u == NULL) {
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183 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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184 }
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185
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348
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186 u->schema = mlcf->upstream.schema;
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187
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130
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188 u->peer.log = r->connection->log;
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189 u->peer.log_error = NGX_ERROR_ERR;
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190 #if (NGX_THREADS)
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191 u->peer.lock = &r->connection->lock;
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192 #endif
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193
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194 u->output.tag = (ngx_buf_tag_t) &ngx_http_memcached_module;
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195
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196 u->conf = &mlcf->upstream;
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197
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198 u->create_request = ngx_http_memcached_create_request;
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199 u->reinit_request = ngx_http_memcached_reinit_request;
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200 u->process_header = ngx_http_memcached_process_header;
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201 u->abort_request = ngx_http_memcached_abort_request;
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202 u->finalize_request = ngx_http_memcached_finalize_request;
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203
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204 r->upstream = u;
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205
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206 ctx = ngx_palloc(r->pool, sizeof(ngx_http_memcached_ctx_t));
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207 if (ctx == NULL) {
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208 return NGX_HTTP_INTERNAL_SERVER_ERROR;
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209 }
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210
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211 ctx->rest = NGX_HTTP_MEMCACHED_END;
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212 ctx->request = r;
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213
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146
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214 ngx_http_set_ctx(r, ctx, ngx_http_memcached_module);
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215
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130
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216 u->input_filter_init = ngx_http_memcached_filter_init;
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217 u->input_filter = ngx_http_memcached_filter;
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218 u->input_filter_ctx = ctx;
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219
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220 ngx_http_upstream_init(r);
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221
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222 return NGX_DONE;
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223 }
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224
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225
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226 static ngx_int_t
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227 ngx_http_memcached_create_request(ngx_http_request_t *r)
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228 {
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278
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229 size_t len;
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322
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230 uintptr_t escape;
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278
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231 ngx_buf_t *b;
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232 ngx_chain_t *cl;
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233 ngx_http_memcached_ctx_t *ctx;
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234 ngx_http_variable_value_t *vv;
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235 ngx_http_memcached_loc_conf_t *mlcf;
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236
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237 mlcf = ngx_http_get_module_loc_conf(r, ngx_http_memcached_module);
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130
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238
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278
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239 vv = ngx_http_get_indexed_variable(r, mlcf->index);
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240
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241 if (vv == NULL || vv->not_found || vv->len == 0) {
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242 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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243 "the \"$memcached_key\" variable is not set");
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244 return NGX_ERROR;
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245 }
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246
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322
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247 escape = 2 * ngx_escape_uri(NULL, vv->data, vv->len, NGX_ESCAPE_MEMCACHED);
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248
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249 len = sizeof("get ") - 1 + vv->len + escape + sizeof(CRLF) - 1;
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130
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250
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251 b = ngx_create_temp_buf(r->pool, len);
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252 if (b == NULL) {
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253 return NGX_ERROR;
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254 }
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255
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256 cl = ngx_alloc_chain_link(r->pool);
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257 if (cl == NULL) {
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258 return NGX_ERROR;
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259 }
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260
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261 cl->buf = b;
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262 cl->next = NULL;
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263
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264 r->upstream->request_bufs = cl;
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265
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266 *b->last++ = 'g'; *b->last++ = 'e'; *b->last++ = 't'; *b->last++ = ' ';
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267
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146
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268 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
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269
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270 ctx->key.data = b->last;
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271
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322
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272 if (escape == 0) {
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273 b->last = ngx_copy(b->last, vv->data, vv->len);
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274
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275 } else {
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276 b->last = (u_char *) ngx_escape_uri(b->last, vv->data, vv->len,
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277 NGX_ESCAPE_MEMCACHED);
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278 }
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130
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279
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146
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280 ctx->key.len = b->last - ctx->key.data;
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130
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281
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282 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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146
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283 "http memcached request: \"%V\"", &ctx->key);
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130
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284
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282
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285 *b->last++ = CR; *b->last++ = LF;
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130
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286
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287 return NGX_OK;
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288 }
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289
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290
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291 static ngx_int_t
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292 ngx_http_memcached_reinit_request(ngx_http_request_t *r)
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293 {
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294 return NGX_OK;
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295 }
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296
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297
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298 static ngx_int_t
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299 ngx_http_memcached_process_header(ngx_http_request_t *r)
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300 {
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146
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301 u_char *p, *len;
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302 ngx_str_t line;
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303 ngx_http_upstream_t *u;
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304 ngx_http_memcached_ctx_t *ctx;
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130
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305
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306 u = r->upstream;
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307
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308 for (p = u->buffer.pos; p < u->buffer.last; p++) {
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309 if (*p == LF) {
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310 goto found;
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311 }
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312 }
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313
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314 return NGX_AGAIN;
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315
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316 found:
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317
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318 *p = '\0';
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319
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320 line.len = p - u->buffer.pos - 1;
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321 line.data = u->buffer.pos;
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322
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323 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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324 "memcached: \"%V\"", &line);
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325
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326 p = u->buffer.pos;
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327
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146
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328 ctx = ngx_http_get_module_ctx(r, ngx_http_memcached_module);
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329
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130
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330 if (ngx_strncmp(p, "VALUE ", sizeof("VALUE ") - 1) == 0) {
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331
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332 p += sizeof("VALUE ") - 1;
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333
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146
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334 if (ngx_strncmp(p, ctx->key.data, ctx->key.len) != 0) {
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130
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335 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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336 "memcached sent invalid key in response \"%V\" "
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337 "for key \"%V\"",
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146
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338 &line, &ctx->key);
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130
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339
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340 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
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341 }
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342
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146
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343 p += ctx->key.len;
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130
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344
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345 if (*p++ != ' ') {
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346 goto no_valid;
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347 }
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348
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349 /* skip flags */
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350
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351 while (*p) {
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352 if (*p++ == ' ') {
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353 goto length;
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354 }
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355 }
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356
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357 goto no_valid;
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358
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359 length:
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360
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361 len = p;
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362
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363 while (*p && *p++ != CR) { /* void */ }
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364
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365 r->headers_out.content_length_n = ngx_atoof(len, p - len - 1);
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366 if (r->headers_out.content_length_n == -1) {
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367 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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368 "memcached sent invalid length in response \"%V\" "
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369 "for key \"%V\"",
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146
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370 &line, &ctx->key);
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130
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371 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
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372 }
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373
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374 u->headers_in.status_n = 200;
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340
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375 u->state->status = 200;
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130
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376 u->buffer.pos = p + 1;
|
|
|
377
|
|
|
378 return NGX_OK;
|
|
|
379 }
|
|
|
380
|
|
|
381 if (ngx_strcmp(p, "END\x0d") == 0) {
|
|
|
382 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
146
|
383 "key: \"%V\" was not found by memcached", &ctx->key);
|
|
130
|
384
|
|
|
385 u->headers_in.status_n = 404;
|
|
340
|
386 u->state->status = 404;
|
|
130
|
387
|
|
|
388 return NGX_OK;
|
|
|
389 }
|
|
|
390
|
|
|
391 no_valid:
|
|
|
392
|
|
|
393 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
394 "memcached sent invalid response: \"%V\"", &line);
|
|
|
395
|
|
|
396 return NGX_HTTP_UPSTREAM_INVALID_HEADER;
|
|
|
397 }
|
|
|
398
|
|
|
399
|
|
|
400 static ngx_int_t
|
|
|
401 ngx_http_memcached_filter_init(void *data)
|
|
|
402 {
|
|
|
403 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
404
|
|
|
405 ngx_http_upstream_t *u;
|
|
|
406
|
|
|
407 u = ctx->request->upstream;
|
|
|
408
|
|
|
409 u->length += NGX_HTTP_MEMCACHED_END;
|
|
|
410
|
|
|
411 return NGX_OK;
|
|
|
412 }
|
|
|
413
|
|
|
414
|
|
|
415 static ngx_int_t
|
|
|
416 ngx_http_memcached_filter(void *data, ssize_t bytes)
|
|
|
417 {
|
|
|
418 ngx_http_memcached_ctx_t *ctx = data;
|
|
|
419
|
|
|
420 u_char *last;
|
|
|
421 ngx_buf_t *b;
|
|
|
422 ngx_chain_t *cl, **ll;
|
|
|
423 ngx_http_upstream_t *u;
|
|
|
424
|
|
|
425 u = ctx->request->upstream;
|
|
|
426 b = &u->buffer;
|
|
|
427
|
|
|
428 if (u->length == ctx->rest) {
|
|
|
429
|
|
|
430 if (ngx_strncmp(b->last,
|
|
340
|
431 ngx_http_memcached_end + NGX_HTTP_MEMCACHED_END - ctx->rest,
|
|
|
432 ctx->rest)
|
|
|
433 != 0)
|
|
130
|
434 {
|
|
|
435 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
436 "memcached sent invalid trailer");
|
|
|
437 }
|
|
|
438
|
|
340
|
439 u->length = 0;
|
|
|
440 ctx->rest = 0;
|
|
130
|
441
|
|
|
442 return NGX_OK;
|
|
|
443 }
|
|
|
444
|
|
|
445 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
446 ll = &cl->next;
|
|
|
447 }
|
|
|
448
|
|
|
449 cl = ngx_chain_get_free_buf(ctx->request->pool, &u->free_bufs);
|
|
|
450 if (cl == NULL) {
|
|
|
451 return NGX_ERROR;
|
|
|
452 }
|
|
|
453
|
|
|
454 cl->buf->flush = 1;
|
|
|
455 cl->buf->memory = 1;
|
|
|
456
|
|
|
457 *ll = cl;
|
|
|
458
|
|
340
|
459 last = b->last;
|
|
|
460 cl->buf->pos = last;
|
|
130
|
461 b->last += bytes;
|
|
|
462 cl->buf->last = b->last;
|
|
366
|
463 cl->buf->tag = u->output.tag;
|
|
130
|
464
|
|
|
465 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, ctx->request->connection->log, 0,
|
|
|
466 "memcached filter bytes:%z size:%z length:%z rest:%z",
|
|
|
467 bytes, b->last - b->pos, u->length, ctx->rest);
|
|
|
468
|
|
340
|
469 if (bytes <= (ssize_t) (u->length - NGX_HTTP_MEMCACHED_END)) {
|
|
130
|
470 u->length -= bytes;
|
|
|
471 return NGX_OK;
|
|
|
472 }
|
|
|
473
|
|
340
|
474 last += u->length - NGX_HTTP_MEMCACHED_END;
|
|
130
|
475
|
|
|
476 if (ngx_strncmp(last, ngx_http_memcached_end, b->last - last) != 0) {
|
|
|
477 ngx_log_error(NGX_LOG_ERR, ctx->request->connection->log, 0,
|
|
|
478 "memcached sent invalid trailer");
|
|
|
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
|
|
|
486 return NGX_OK;
|
|
|
487 }
|
|
|
488
|
|
|
489
|
|
|
490 static void
|
|
|
491 ngx_http_memcached_abort_request(ngx_http_request_t *r)
|
|
|
492 {
|
|
|
493 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
494 "abort http memcached request");
|
|
|
495 return;
|
|
|
496 }
|
|
|
497
|
|
|
498
|
|
|
499 static void
|
|
|
500 ngx_http_memcached_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
|
|
|
501 {
|
|
|
502 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
503 "finalize http memcached request");
|
|
|
504 return;
|
|
|
505 }
|
|
|
506
|
|
|
507
|
|
|
508 static void *
|
|
|
509 ngx_http_memcached_create_loc_conf(ngx_conf_t *cf)
|
|
|
510 {
|
|
|
511 ngx_http_memcached_loc_conf_t *conf;
|
|
|
512
|
|
|
513 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_memcached_loc_conf_t));
|
|
|
514 if (conf == NULL) {
|
|
|
515 return NGX_CONF_ERROR;
|
|
|
516 }
|
|
|
517
|
|
|
518 /*
|
|
|
519 * set by ngx_pcalloc():
|
|
|
520 *
|
|
|
521 * conf->upstream.bufs.num = 0;
|
|
|
522 * conf->upstream.next_upstream = 0;
|
|
|
523 * conf->upstream.temp_path = NULL;
|
|
|
524 * conf->upstream.schema = { 0, NULL };
|
|
|
525 * conf->upstream.uri = { 0, NULL };
|
|
|
526 * conf->upstream.location = NULL;
|
|
|
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
|
|
358
|
549 conf->index = NGX_CONF_UNSET;
|
|
|
550
|
|
130
|
551 return conf;
|
|
|
552 }
|
|
|
553
|
|
|
554
|
|
|
555 static char *
|
|
|
556 ngx_http_memcached_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
|
|
557 {
|
|
|
558 ngx_http_memcached_loc_conf_t *prev = parent;
|
|
|
559 ngx_http_memcached_loc_conf_t *conf = child;
|
|
|
560
|
|
|
561 ngx_conf_merge_msec_value(conf->upstream.connect_timeout,
|
|
|
562 prev->upstream.connect_timeout, 60000);
|
|
|
563
|
|
|
564 ngx_conf_merge_msec_value(conf->upstream.send_timeout,
|
|
|
565 prev->upstream.send_timeout, 60000);
|
|
|
566
|
|
|
567 ngx_conf_merge_msec_value(conf->upstream.read_timeout,
|
|
|
568 prev->upstream.read_timeout, 60000);
|
|
|
569
|
|
|
570 ngx_conf_merge_size_value(conf->upstream.buffer_size,
|
|
|
571 prev->upstream.buffer_size,
|
|
|
572 (size_t) ngx_pagesize);
|
|
|
573
|
|
|
574 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream,
|
|
|
575 prev->upstream.next_upstream,
|
|
|
576 (NGX_CONF_BITMASK_SET
|
|
|
577 |NGX_HTTP_UPSTREAM_FT_ERROR
|
|
|
578 |NGX_HTTP_UPSTREAM_FT_TIMEOUT));
|
|
|
579
|
|
214
|
580 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) {
|
|
|
581 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET
|
|
|
582 |NGX_HTTP_UPSTREAM_FT_OFF;
|
|
|
583 }
|
|
|
584
|
|
358
|
585 if (conf->upstream.upstream == NULL) {
|
|
|
586 conf->upstream.upstream = prev->upstream.upstream;
|
|
|
587 conf->upstream.schema = prev->upstream.schema;
|
|
|
588 }
|
|
|
589
|
|
|
590 if (conf->index == NGX_CONF_UNSET) {
|
|
|
591 conf->index = prev->index;
|
|
|
592 }
|
|
|
593
|
|
130
|
594 return NGX_CONF_OK;
|
|
|
595 }
|
|
|
596
|
|
|
597
|
|
|
598 static char *
|
|
|
599 ngx_http_memcached_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
600 {
|
|
|
601 ngx_http_memcached_loc_conf_t *lcf = conf;
|
|
|
602
|
|
|
603 ngx_str_t *value;
|
|
252
|
604 ngx_url_t u;
|
|
130
|
605 ngx_http_core_loc_conf_t *clcf;
|
|
|
606
|
|
|
607 if (lcf->upstream.schema.len) {
|
|
|
608 return "is duplicate";
|
|
|
609 }
|
|
|
610
|
|
|
611 value = cf->args->elts;
|
|
|
612
|
|
252
|
613 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
614
|
|
|
615 u.url = value[1];
|
|
260
|
616 u.no_resolve = 1;
|
|
130
|
617
|
|
260
|
618 lcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0);
|
|
|
619 if (lcf->upstream.upstream == NULL) {
|
|
|
620 return NGX_CONF_ERROR;
|
|
130
|
621 }
|
|
|
622
|
|
|
623 lcf->upstream.schema.len = sizeof("memcached://") - 1;
|
|
|
624 lcf->upstream.schema.data = (u_char *) "memcached://";
|
|
|
625
|
|
|
626 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
|
|
|
627
|
|
|
628 clcf->handler = ngx_http_memcached_handler;
|
|
|
629
|
|
|
630 if (clcf->name.data[clcf->name.len - 1] == '/') {
|
|
|
631 clcf->auto_redirect = 1;
|
|
|
632 }
|
|
|
633
|
|
278
|
634 lcf->index = ngx_http_get_variable_index(cf, &ngx_http_memcached_key);
|
|
|
635
|
|
|
636 if (lcf->index == NGX_ERROR) {
|
|
|
637 return NGX_CONF_ERROR;
|
|
|
638 }
|
|
|
639
|
|
130
|
640 return NGX_CONF_OK;
|
|
|
641 }
|
|
260
|
642
|
|
|
643
|
|
|
644 static char *
|
|
|
645 ngx_http_memcached_upstream_max_fails_unsupported(ngx_conf_t *cf,
|
|
|
646 ngx_command_t *cmd, void *conf)
|
|
|
647 {
|
|
|
648 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
649 "\"memcached_upstream_max_fails\" is not supported, "
|
|
|
650 "use the \"max_fails\" parameter of the \"server\" directive ",
|
|
|
651 "inside the \"upstream\" block");
|
|
|
652
|
|
|
653 return NGX_CONF_ERROR;
|
|
|
654 }
|
|
|
655
|
|
|
656
|
|
|
657 static char *
|
|
|
658 ngx_http_memcached_upstream_fail_timeout_unsupported(ngx_conf_t *cf,
|
|
|
659 ngx_command_t *cmd, void *conf)
|
|
|
660 {
|
|
|
661 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
662 "\"memcached_upstream_fail_timeout\" is not supported, "
|
|
|
663 "use the \"fail_timeout\" parameter of the \"server\" directive ",
|
|
|
664 "inside the \"upstream\" block");
|
|
|
665
|
|
|
666 return NGX_CONF_ERROR;
|
|
|
667 }
|
