{"id":697,"date":"2014-07-15T23:57:06","date_gmt":"2014-07-15T14:57:06","guid":{"rendered":"http:\/\/tech.akat.info\/?p=697"},"modified":"2014-12-31T21:09:13","modified_gmt":"2014-12-31T12:09:13","slug":"lua-nginx-memcached","status":"publish","type":"post","link":"https:\/\/tech.akat.info\/?p=697","title":{"rendered":"nginx-lua"},"content":{"rendered":"

\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h1>\n

Lua\u306fC\u8a00\u8a9e\u306e\u30db\u30b9\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u7d44\u307f\u8fbc\u307e\u308c\u308b\u3053\u3068\u3092\u76ee\u7684\u306b\u8a2d\u8a08\u3055\u308c\u3066\u304a\u308a\u3001\u9ad8\u901f\u3067\u52d5\u4f5c\u3059\u308b
\ndebian\u3067\u306f\u3001nginx-extras \u3082\u3057\u304f\u306f lua-nginx-module \u3092\u4f7f\u3046\u3068 Lua\u306e\u30b3\u30fc\u30c9\u3092\u901a\u3057\u3066Nginx\u3092\u5236\u5fa1\u53ef\u80fd<\/p>\n

\r\nroot@hostname:\/home\/shimizu# aptitude install nginx-extras\r\n(\u4e2d\u7565)\r\nroot@hostname:\/home\/shimizu# aptitude search nginx | grep ^i\r\ni A nginx-common                    - small, powerful, scalable web\/proxy server\r\ni   nginx-extras                    - nginx web\/proxy server (extended version)\r\nroot@hostname:\/home\/shimizu# aptitude show nginx-extras | grep Lua\r\n THIRD PARTY MODULES: Auth PAM, Chunkin, DAV Ext, Echo, Embedded Lua,\r\n<\/pre>\n
\r\nroot@hostname:\/home\/shimizu# lv \/etc\/apt\/sources.list\u3000# jessie(debian8)\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u5b58\u5728\r\n=============\r\ndeb http:\/\/ftp.jp.debian.org\/debian\/ jessie main contrib non-free\r\ndeb-src http:\/\/ftp.jp.debian.org\/debian\/ jessie main contrib non-free\r\n\r\ndeb http:\/\/security.debian.org\/ jessie\/updates main contrib non-free\r\ndeb-src http:\/\/security.debian.org\/ jessie\/updates main contrib non-free\r\n\r\n# jessie-updates, previously known as 'volatile'\r\ndeb http:\/\/ftp.jp.debian.org\/debian\/ jessie-updates main contrib non-free\r\ndeb-src http:\/\/ftp.jp.debian.org\/debian\/ jessie-updates main contrib non-free\r\n=============\r\nroot@hostname:\/home\/shimizu# aptitude install lua-nginx-memcached\r\n...(\u7565)\r\nroot@hostname:\/home\/shimizu# aptitude search nginx | grep ^i\r\ni   lua-nginx-memcached             - Pure Lua memcached client driver for the n\r\ni A nginx-common                    - small, powerful, scalable web\/proxy server\r\ni A nginx-extras                    - nginx web\/proxy server (extended version)\r\n<\/pre>\n
lua-nginx-memcached\u306f\u3001OpenResty\u3092\u3082\u3068\u306b\u3057\u305f\u30d1\u30c3\u30b1\u30fc\u30b8
\nOpenResty\u306f nginx-lua \u306e\u30e1\u30f3\u30c6\u30ca\u306e agentzh\u3055\u3093\u304c\u63d0\u4f9b\u3057\u3066\u3044\u308b\u30d0\u30f3\u30c9\u30eb<\/p>\n
\u6982\u8981<\/h1>\n
nginx\u306f [server selection]\u2192[post read]\u2192…\u2192[post action]\u3068\u3044\u3046\u30d5\u30a7\u30fc\u30ba\u3067\u51e6\u7406\u3059\u308b
\nLua\u306fRewrite,Access,Content,Log\u306b\u3066\u30d5\u30c3\u30af\u3059\u308b\u4ed5\u7d44\u307f\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b
\nLua\u30b9\u30af\u30ea\u30d7\u30c8\u304b\u3089\u306f\u3001ngx.get_phase \u3092\u5229\u7528\u3057\u3066\u3001\u73fe\u5728\u306e\u30d5\u30a7\u30fc\u30ba\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b
\n\"2014-07-20_195841\"<\/a><\/p>\n
\u5229\u7528\u65b9\u6cd5<\/h1>\n
rewrite_by_lua<\/h2>\n
access\u30d5\u30a7\u30fc\u30ba\u306e\u76f4\u524d\u306b\u5b9f\u884c\u3055\u308c\u308b
\n\u3064\u307e\u308a\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3060\u3068\u3001\/bar\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u3001500\u30a8\u30e9\u30fc\u306f\u8fd4\u5374\u3055\u308c\u306a\u3044<\/p>\n
\r\nlocation \/foo {\r\n        rewrite_by_lua 'ngx.exit(503)';\r\n        rewrite ^ \/bar;\r\n}\r\n<\/pre>\n
\u3061\u3087\u3063\u3068\u8907\u96d1\u306b\u307f\u3048\u308b\u4f8b<\/h3>\n
\r\nlocation \/foo {\r\n        set $a 12; # create and initialize $a\r\n        set $b ''; # create and initialize $b\r\n        rewrite_by_lua 'ngx.var.b = tonumber(ngx.var.a) + 1';\r\n        if ($b = '13') {\r\n                rewrite ^ \/bar redirect;\r\n                break;\r\n        }\r\n        default_type 'text\/plain';\r\n        echo "res = $b";\r\n}\r\n<\/pre>\n
\u5225\u30b5\u30fc\u30d0\u3088\u308a\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001<\/p>\n
\r\nroot@debian:\/var\/www\/htdocs\/test# curl http:\/\/jpdebian.cloudapp.net\/foo\r\nres = 13\r\n<\/pre>\n
\u3068\u306a\u308a\u3001\/bar\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u306a\u3044\u3002\u3053\u308c\u306frewrite_by_lua\u3088\u308a\u3082if\u304c\u5148\u306b\u5b9f\u884c\u3055\u308c\u308b\u305f\u3081\u3067\u3042\u308a\u3001\u8a18\u8f09\u306e\u9806\u756a\u901a\u308a\u306b\u52d5\u4f5c\u3057\u306a\u3044
\n\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u305b\u308b\u305f\u3081\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8f09\u3059\u308b(\/bar\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u3001echo\u306f\u5b9f\u884c\u3055\u308c\u306a\u3044)<\/p>\n
\r\nlocation \/foo {\r\n    set $a 12; # create and initialize $a\r\n    set $b ''; # create and initialize $b\r\n    rewrite_by_lua '\r\n        ngx.var.b = tonumber(ngx.var.a) + 1\r\n        if tonumber(ngx.var.b) == 13 then\r\n            return ngx.redirect("\/bar");\r\n        end\r\n    ';\r\n\r\n    default_type 'text\/plain';\r\n    echo "res = $b";\r\n}\r\n<\/pre>\n
set_by_lua<\/h2>\n
\u5b9f\u884c\u3057\u305f\u30b3\u30fc\u30c9\u306e\u8fd4\u308a\u5024\u3092\u3001$res\u306b\u5165\u308c\u308b<\/p>\n
\r\nlocation \/ {\r\n   # MIME type determined by default_type:\r\n    default_type 'text\/plain';\r\n    set $a "hello";\r\n    set $b "world";\r\n    # inline Lua script\r\n    set_by_lua $res "return ngx.arg[1]..ngx.arg[2]" $a $b;\r\n    echo $res;\r\n}\r\n<\/pre>\n
\u5225\u30b5\u30fc\u30d0\u3088\u308a\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001<\/p>\n
\r\nroot@debian:\/var\/www\/htdocs\/test# curl http:\/\/jpdebian.cloudapp.net\r\nhelloworld\r\n<\/pre>\n
ngx.say<\/h2>\n
\r\nlocation \/ {\r\n        # MIME type determined by default_type:\r\n        default_type 'text\/plain';\r\n        content_by_lua "ngx.say('Hello,world!')";\r\n}\r\n<\/pre>\n
\u5225\u30b5\u30fc\u30d0\u3088\u308a\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001<\/p>\n
\r\nroot@debian:\/var\/www\/htdocs\/test# curl http:\/\/jpdebian.cloudapp.net\r\nhelloworld\r\n<\/pre>\n
\u30ea\u30af\u30a8\u30b9\u30c8\u30d8\u30c3\u30c0\u306e\u5185\u5bb9\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u3082\u53ef\u80fd<\/p>\n
\r\nlocation \/ {\r\ndefault_type 'text\/plain';\r\ncontent_by_lua 'ngx.say("Host: ", ngx.req.get_headers()["Host"])';\r\n}\r\n<\/pre>\n
ngx.location.caputure<\/h2>\n
\u30b5\u30d6\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u98db\u3070\u3059\u3053\u3068\u304c\u53ef\u80fd
\n\u305f\u3060\u3057\u3001\u4efb\u610f\u306eURL\u3078\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u3067\u304d\u308b\u308f\u3051\u3067\u306f\u306a\u304f\u3001nginx \u5185\u306e\u30a4\u30f3\u30bf\u30fc\u30ca\u30eb\u306a\u30ea\u30af\u30a8\u30b9\u30c8\u3057\u304b\u3067\u304d\u306a\u3044
\nrewrite_by_lua*, access_by_lua*, content_by_lua* \u306b\u3066\u5229\u7528\u53ef\u80fd
\n\u307e\u305f\u8fd4\u308a\u5024\u306f\u3001status, header, body \u306e3\u3064\u304b\u3089\u306a\u308b\u30c6\u30fc\u30d6\u30eb\u306b\u306a\u3063\u3066\u3044\u308b<\/p>\n
\r\nlocation \/ {\r\ndefault_type 'text\/plain';\r\ncontent_by_lua '\r\nlocal res = ngx.location.capture("\/auth")\r\nngx.say("status: ", res.status ," body: ", res.body )\r\n';\r\n}\r\n\r\nlocation \/auth {\r\n     internal;\r\n     set $memcached_key abcde;\r\n     memcached_pass 127.0.0.1:11211;\r\n}\r\n<\/pre>\n
\u5225\u30b5\u30fc\u30d0\u3088\u308a\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001<\/p>\n
\r\nroot@debian:\/var\/www\/htdocs\/test# curl http:\/\/jpdebian.cloudapp.net\r\nstatus: 200 body: 1\r\n<\/pre>\n
content_by_lua<\/h2>\n
body\u751f\u6210\u51e6\u7406\u3059\u308b<\/p>\n
\r\nlocation \/ {\r\n    # MIME type determined by default_type:\r\n    default_type 'text\/plain';\r\n\r\n    # try access \/?a=hello,world\r\n    content_by_lua "ngx.print(ngx.var['arg_a'], '\\\\n')";\r\n}\r\n<\/pre>\n
\u5225\u30b5\u30fc\u30d0\u3088\u308a\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001<\/p>\n
\r\nroot@debian:\/var\/www\/htdocs# curl http:\/\/jpdebian.cloudapp.net\/?a=hello,world!\r\nhello,world!\r\n<\/pre>\n
ngx.var.(\u5909\u6570)<\/h2>\n
\r\nlocation \/ {\r\n        set $value "hoge";\r\n        default_type 'text\/plain';\r\n        content_by_lua 'ngx.say(ngx.var.value)';\r\n        }\r\n<\/pre>\n
\u5225\u30b5\u30fc\u30d0\u3088\u308a\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001<\/p>\n
\r\nroot@debian:\/var\/www\/htdocs# curl http:\/\/jpdebian.cloudapp.net\r\nhoge\r\n<\/pre>\n
ngx.var.value \u3060\u3068 nginx\u5909\u6570$value\u3092\u53d6\u5f97\u3059\u308b(ngx.var.uri\u306a\u3069\u3082\u3088\u304f\u5229\u7528\u3055\u308c\u308b)
\n\u3053\u306e\u5909\u6570\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u7d42\u308f\u308b\u305f\u3073\u306b\u30e1\u30e2\u30ea\u304b\u3089\u89e3\u653e\u3055\u308c\u308b\u306e\u3067\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u307e\u305f\u304c\u3063\u3066\u4fdd\u6301\u3057\u305f\u3044\u3082\u306e\u306f\u3001ngx.shared.DICT\u3092\u5229\u7528\u3059\u308b<\/p>\n
if<\/h2>\n
\r\nlocation \/ {\r\n    # MIME type determined by default_type:\r\n    default_type 'text\/plain';\r\n\r\n    content_by_lua '\r\n       local num = tonumber(ngx.var.arg_num) or 0\r\n\r\n       if num > 50 then\r\n           ngx.say("num too big")\r\n           return\r\n       end\r\n\r\n       ngx.say("num is: ", num)\r\n\r\n       if num > 0 then\r\n           res = ngx.location.capture("\/recur?num=" .. tostring(num - 1))\r\n           ngx.print("status=", res.status, " ")\r\n           ngx.print("body=", res.body)\r\n       else\r\n           ngx.say("end")\r\n       end\r\n       ';\r\n}\r\n<\/pre>\n
\u5225\u30b5\u30fc\u30d0\u3088\u308a\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001<\/p>\n
\r\nroot@debian:\/var\/www\/htdocs# curl http:\/\/jpdebian.cloudapp.net\/?num=5\r\n<\/pre>\n
\u53c2\u8003<\/h1>\n
http:\/\/wiki.nginx.org\/HttpLuaModule
\nhttp:\/\/d.hatena.ne.jp\/hiboma\/20120205\/1328448746
\nhttp:\/\/qiita.com\/kz_takatsu\/items\/e94805a8e3cc285f9b33<\/p>\n