{"id":34723,"date":"2023-10-03T01:45:41","date_gmt":"2023-03-15T09:54:55","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bd%bb%e5%ba%95%e7%90%86%e8%a7%a3%e4%ba%86rails%e7%9a%84session%e3%80%82\/"},"modified":"2024-05-04T02:35:02","modified_gmt":"2024-05-03T18:35:02","slug":"%e5%bd%bb%e5%ba%95%e7%90%86%e8%a7%a3%e4%ba%86rails%e7%9a%84session%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%bd%bb%e5%ba%95%e7%90%86%e8%a7%a3%e4%ba%86rails%e7%9a%84session%e3%80%82\/","title":{"rendered":"\u5f7b\u5e95\u7406\u89e3\u4e86Rails\u7684session"},"content":{"rendered":"

\u3053\u3093\u306b\u3061\u306f\u3001\u98df\u3079\u30ed\u30b0 DevOps \u30c1\u30fc\u30e0 \/ \u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30b9\u30c1\u30fc\u30e0\u306e\u7232\u5ca1\u3067\u3059\u3002
\n\u98df\u3079\u30ed\u30b0 Advent Calendar 2018 \u306b\u66f8\u304f\u306e\u306f2\u5ea6\u3081\u3067\u3059\u3002
\n\u304a\u6642\u9593\u3054\u3056\u3044\u307e\u3057\u305f\u3089\u30011\u3064\u3081\u306e\u8a18\u4e8b\u3082\u8aad\u3093\u3067\u3044\u305f\u3060\u3051\u308b\u3068\u5b09\u3057\u3044\u3067\u3059\u3002<\/p>\n

\u4f7f\u7528 Docker \u5bb9\u5668\u6765\u6784\u5efa Ansible \u63a7\u5236\u5668\/\u76ee\u6807\u673a<\/p>\n

\u9996\u5148<\/h2>\n

\u8bf7\u770b https:\/\/togetter.com\/li\/1268851\u3002
\n\u4ee5\u4e0b\u662f\u6587\u7ae0\u7684\u6458\u5f55\u3002<\/p>\n

\u3010\u5de5\u7a0b\u5e08\u672f\u8bed\u89e3\u91ca\u3011<\/p>\n

\u300c\u5b8c\u5168\u7406\u89e3\u300d
\n\u6307\u5b8c\u6210\u4e86\u4f7f\u7528\u4ea7\u54c1\u6240\u9700\u7684\u6559\u7a0b\uff0c\u80fd\u591f\u5b8c\u6574\u5730\u638c\u63e1\u3002<\/p>\n

\u300c\u4e00\u7a8d\u4e0d\u901a\u300d
\n\u8868\u793a\u5df2\u7ecf\u6df1\u5165\u4e86\u89e3\u4ea7\u54c1\u56fa\u6709\u95ee\u9898\uff0c\u9762\u5bf9\u76f4\u63a5\u7684\u6311\u6218\u3002<\/p>\n

\u300c\u80fd\u52c9\u5f3a\u505a\u5230\u300d
\n\u6307\u53ef\u4ee5\u72ec\u81ea\u4ece\u96f6\u5f00\u59cb\u5236\u4f5c\u76f8\u540c\u7684\u4ea7\u54c1\uff0c\u6216\u8005\u6307\u5f00\u53d1\u8005\u672c\u4eba\u3002<\/p><\/blockquote>\n

\u79c1\u306f\u4eca\u306f DevOps \u30c1\u30fc\u30e0\u3068\u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30b9\u30c1\u30fc\u30e0\u3067\u30a8\u30f3\u30b8\u30cb\u30a2\u3092\u3057\u3066\u307e\u3059\u304c\u3001\u65b0\u5352\u3067\u5165\u793e\u3057\u305f\u5f53\u521d\u306f\u6c7a\u6e08\u30b7\u30b9\u30c6\u30e0\u306e Rails \u30a8\u30f3\u30b8\u30cb\u30a2\u3067\u3057\u305f\u3002
\n\u6b63\u76f4\u306b\u8a00\u3063\u3066\u3001\u672a\u3060\u306b Rails \u306b\u3064\u3044\u3066\u8a73\u3057\u3044\u3068\u306f\u8a00\u3048\u307e\u305b\u3093\u3002<\/p>\n

\u6709\u4e00\u5929\uff0c\u6211\u5728\u7f16\u5199\u5e94\u7528\u7a0b\u5e8f\u7684\u63a7\u5236\u5668\u65f6\uff0c\u7a81\u7136\u60f3\u5230\u4e86\u4e00\u4e2a\u95ee\u9898\uff1a”Rails \u7684\u4f1a\u8bdd\u662f\u901a\u8fc7\u4ec0\u4e48\u673a\u5236\u5de5\u4f5c\u7684\u5462\uff1f”<\/p>\n

\u4e3a\u4e86\u5b8c\u5168\u7406\u89e3 Rails \u7684 session\uff0c\u53ea\u9700\u8981\u5b8c\u6210 Rails \u6559\u7a0b\u4e2d\u7684 Session \u90e8\u5206\u5c31\u53ef\u4ee5\u4e86\uff0c\u6240\u4ee5\u6211\u8bd5\u7740\u505a\u4e86\u4e00\u4e0b\uff08Ruby on Rails \u7684 Session \u6559\u7a0b\u5728\u8fd9\u91cc\uff09\u3002<\/p>\n

\u7136\u800c\uff0c\u53ea\u662f\u8bf4\u201c\u6211\u5b8c\u6210\u4e86\u6559\u7a0b\uff01\u201d\u8fd8\u6709\u70b9\u5bc2\u5bde\uff0c\u6240\u4ee5……<\/p>\n

\u600e\u4e48\u6837\u5c06 session \u7684\u503c\u52a0\u8f7d\u5230 session[:hoge] \u4e2d\uff1f<\/p>\n

\u6211\u6df1\u5165\u7814\u7a76\u4e86Rails\u7684\u4ee3\u7801\uff0c\u6240\u4ee5\u51b3\u5b9a\u5c06\u8fd9\u4e9b\u7814\u7a76\u5199\u6210\u4e00\u7bc7\u6587\u7ae0\u3002<\/p>\n

\u307e\u305f\u3001Rails \u3067\u306f Session store \u306b\u306f Cookie store \u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3092\u63a8\u5968\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4e00\u65b9\u3067\u30b5\u30fc\u30d3\u30b9\u958b\u767a\u306b\u304a\u3044\u3066 Memcached \u306a\u3069\u306e KVS \u3092 session \u7ba1\u7406\u306b\u5229\u7528\u3059\u308b\u3053\u3068\u3082\u591a\u3044\u3068\u601d\u3044\u307e\u3059\u3002
\n\u3068\u3044\u3046\u3053\u3068\u3067\u3001\u6539\u3081\u307e\u3057\u3066\u3001\u4eca\u56de\u306f\u3001<\/p>\n

\u5982\u4f55\u4eceMemcached\u52a0\u8f7dsession[:hoge]\u4e2d\u7684session\u503c?<\/p>\n

\u8fd9\u662f\u5173\u4e8e……\u7684\u8bdd\u9898\u3002<\/p>\n

session[]\u7684\u5b9e\u4f53\u5b58\u5728\u4e8e\u54ea\u91cc\uff1f (Sesssion [] de y\u00fa ?)<\/h2>\n

\u5e94\u7528\u7a0b\u5e8f\uff1a’hoge’<\/h3>\n

\u305f\u3068\u3048\u3070\u3001Rails \u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u305f\u72b6\u614b\u3067rails new hoge\u3059\u308b\u3068 Rails \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u3067\u304d\u3042\u304c\u3063\u3066\u3001hoge\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u3067rails g controller sessions\u3059\u308b\u3068 ApplicationController \u3092\u7d99\u627f\u3057\u305f SessionsController \u304c\u751f\u6210\u3055\u308c\u307e\u3059\u304c\u3001\u306f\u3058\u3081\u304b\u3089session[:hoge]\u3068\u3044\u3063\u305f\u66f8\u304d\u65b9\u3067 session \u3092\u5229\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

class<\/span> SessionsController<\/span> <<\/span> ApplicationController<\/span>\r\n  def<\/span> create<\/span>\r\n    if<\/span> session<\/span>[<\/span>:user_id<\/span>]<\/span>\r\n      flash<\/span>[<\/span>:notice<\/span>]<\/span> =<\/span> '\u30ed\u30b0\u30a4\u30f3\u6e08\u307f\u3067\u3059'<\/span>\r\n    else<\/span>\r\n      session<\/span>[<\/span>:user_id<\/span>]<\/span> =<\/span> params<\/span>[<\/span>:user_id<\/span>]<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\n\r\n  ...<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u8fd9\u4e2a\u5bb6\u4f19\u7684\u672c\u8d28\u662f\u4ec0\u4e48\uff1f<\/p>\n
\u4f1a\u8bdd\u4e0d\u662f\u5b9e\u4f8b\u53d8\u91cf\uff0c\u4e5f\u6ca1\u6709\u4f5c\u4e3a\u672c\u5730\u53d8\u91cf\u5b9a\u4e49\uff0c\u6240\u4ee5\u6211\u4eec\u6000\u7591 ApplicationController \u62e5\u6709\u6b64\u65b9\u6cd5\uff0c\u5e76\u4e14\u6211\u4eec\u5c06\u67e5\u770b ApplicationController \u7684\u5b9e\u73b0\u3002<\/p>\n
\u7136\u800c\uff0c\u5728\u8fd9\u91cc\u5e76\u6ca1\u6709\u5173\u4e8esession\u7684\u63cf\u8ff0\u3002<\/p>\n
\u7531\u4e8e ApplicationController \u7ee7\u627f\u81ea ActionController::Base\uff0c\u73b0\u5728\u6211\u4eec\u6765\u770b\u8fd9\u4e2a\u5b9e\u73b0\u3002\u4ece\u73b0\u5728\u5f00\u59cb\uff0c\u8fdb\u5165\u4e86 Rails \u81ea\u8eab\u7684\u4e16\u754c\u3002\u4ece\u6211\u7684\u5e94\u7528\u7a0b\u5e8f hoge \u4e2d\u51fa\u53d1\uff0c\u9605\u8bfb Rails \u81ea\u8eab\u7684\u4ee3\u7801\u3002<\/p>\n
\u53c2\u8003\uff1aGitHub \u4e0a\u7684 rails\/rails \u9879\u76ee<\/p>\n
\u5b9d\u77f3\uff1a’Rails’<\/h3>\n
\u5f53\u6211\u4eec\u67e5\u770bActionController::Base\u65f6\uff0c\u6211\u4eec\u53ea\u80fd\u627e\u5230\u6709\u5173session\u63a5\u53e3\u7684\u6ce8\u91ca\uff0c\u800c\u5b9e\u9645\u4e0a\u5e76\u6ca1\u6709session\u65b9\u6cd5\u3002<\/p>\n
\u305d\u308d\u305d\u308d\u98fd\u304d\u3066\u304d\u307e\u3057\u305f\u304c\u3001ActionController::Base \u306e\u7d99\u627f\u5143\u306e ActionController::Metal \u3068\u3044\u3046\u30af\u30e9\u30b9\u306bsession\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n
module<\/span> ActionController<\/span>\r\n  ...<\/span>\r\n\r\n  class<\/span> Metal<\/span> <<\/span> AbstractController<\/span>::<\/span>Base<\/span>\r\n    ...<\/span>\r\n\r\n    delegate<\/span> :session<\/span>,<\/span> to: <\/span>\"@_request\"<\/span>\r\n\r\n    ...<\/span>\r\n  end<\/span>\r\n\r\n  ...<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u306a\u308b\u307b\u3069\u3001ActionController::Metal \u306fsession\u30e1\u30bd\u30c3\u30c9\u3092\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3068\u3057\u3066\u6301\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u305d\u306e\u4e2d\u8eab\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570@_request\u306bdelegate\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n
\u90a3\u4e48\uff0c\u8fd9\u4e2a@_request\u662f\u4ec0\u4e48\u5462\uff1f<\/p>\n
\u56e0\u4e3a\u6211\u4e0d\u660e\u767d\uff0c\u6240\u4ee5\u6211\u5c06\u7a0d\u5fae\u8c03\u6574\u4e4b\u524d\u521b\u5efa\u7684\u5e94\u7528\u7a0b\u5e8fhoge\u7684SessionsController\u6765\u786e\u8ba4\u4e00\u4e0b\u3002<\/p>\n
class<\/span> SessionsController<\/span> <<\/span> ApplicationController<\/span>\r\n  def<\/span> create<\/span>\r\n    raise<\/span> session<\/span>.<\/span>inspect<\/span>\r\n\r\n    # if session[:user_id]<\/span>\r\n    #   flash[:notice] = '\u30ed\u30b0\u30a4\u30f3\u6e08\u307f\u3067\u3059'<\/span>\r\n    # else<\/span>\r\n    #   session[:user_id] = params[:user_id]<\/span>\r\n    # end<\/span>\r\n  end<\/span>\r\n\r\n  ...<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u5f53\u4ee5\u67d0\u79cd\u65b9\u5f0f\u53d1\u9001\u8bf7\u6c42\u6216\u63d0\u51fa\u8981\u6c42\u540e\uff0c\u4f60\u4f1a\u53d1\u73b0@_request\u7684\u672c\u8d28\u662fActionDispatch::Request::Session\u7c7b\u7684\u5bf9\u8c61\u3002<\/p>\n
\u90a3\u4e48\u8ba9\u6211\u4eec\u53bb\u770b\u4e00\u4e0b ActionDispatch::Request::Session\u3002<\/p>\n
...<\/span>\r\n\r\nmodule<\/span> ActionDispatch<\/span>\r\n  class<\/span> Request<\/span>\r\n    ...<\/span>\r\n\r\n    class<\/span> Session<\/span>\r\n      ...<\/span>\r\n\r\n      def<\/span> []<\/span>(<\/span>key<\/span>)<\/span>\r\n          @delegate<\/span>[<\/span>key<\/span>]<\/span>\r\n      end<\/span>\r\n      ...<\/span>\r\n\r\n      def<\/span> []=<\/span>(<\/span>k<\/span>,<\/span> v<\/span>);<\/span>        @delegate<\/span>[<\/span>k<\/span>]<\/span> =<\/span> v<\/span>;<\/span> end<\/span>\r\n      ...<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u3088\u3046\u3084\u304f\u3042\u308a\u307e\u3057\u305f!
\n[]\u30e1\u30bd\u30c3\u30c9\u3068[]=\u30e1\u30bd\u30c3\u30c9\u3067\u3059\u3002<\/p>\n
\u3064\u307e\u308a\u307e\u3068\u3081\u308b\u3068\u3001<\/p>\n
\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e controller \u306bsession[:hoge]\u3068\u66f8\u304f\u3068\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u6765\u305f\u3068\u304d\u306b\u3001\u305d\u306e controller \u306e\u7d99\u627f\u5143\u30af\u30e9\u30b9\u3067\u3042\u308b ActionController::Metal \u304cdelegate\u3057\u3066\u3044\u308b ActionDispatch::Request::Session \u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308bsession\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30e1\u30bd\u30c3\u30c9\u3067\u3042\u308b[]\u30e1\u30bd\u30c3\u30c9\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u3001\u3068\u3002<\/p>\n
\u3053\u3046\u3057\u3066\u30b3\u30fc\u30c9\u3092\u8ffd\u3063\u3066\u307f\u308b\u3068\u306a\u304b\u306a\u304b\u8907\u96d1\u3067\u3059\u306d\u3002<\/p>\n
\u5982\u4f55\u4eceMemcached\u52a0\u8f7d\u6570\u636e\uff1f<\/h2>\n
\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u6211\u4eec\u5df2\u7ecf\u4e86\u89e3\u4e86\u63d0\u4f9b\u63a5\u53e3session []\u7684\u65b9\u5f0f\uff0c\u4f46\u662f\u5982\u679c\u5c06Memcached\u7528\u4f5c\u4f1a\u8bdd\u5b58\u50a8\uff0c\u90a3\u4e48\u5728[]\u65b9\u6cd5\u4e2d\u5e94\u8be5\u5b58\u5728\u4eceMemcached\u52a0\u8f7d\u4f1a\u8bdd\u503c\u7684\u8fc7\u7a0b\u3002\u8ba9\u6211\u4eec\u627e\u51fa\u5b83\u3002<\/p>\n
\u7ee7\u7eed\u4f7f\u7528 gem: ‘rails’<\/h3>\n
[]\u30e1\u30bd\u30c3\u30c9\u306fload_for_read!\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u305f\u5f8c\u306b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570@delegate\u304b\u3089 key \u306b\u5bfe\u3059\u308b value \u3092 read \u3057\u3066\u3044\u307e\u3059\u304c\u3001load_for_read!\u30e1\u30bd\u30c3\u30c9\u3067\u306f\u4e0b\u8a18\u306eload!\u30e1\u30bd\u30c3\u30c9\u3092\u53c2\u7167\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
def<\/span> load!<\/span>\r\n  id<\/span>,<\/span> session<\/span> =<\/span> @by<\/span>.<\/span>load_session<\/span> @req<\/span>\r\n  options<\/span>[<\/span>:id<\/span>]<\/span> =<\/span> id<\/span>\r\n  @delegate<\/span>.<\/span>replace<\/span>(<\/span>stringify_keys<\/span>(<\/span>session<\/span>))<\/span>\r\n  @loaded<\/span> =<\/span> true<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u3053\u306e\u3088\u3046\u306b\u3001load!\u30e1\u30bd\u30c3\u30c9\u306e\u4e2d\u3067\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570@by\u306eload_session\u306b@req\u3092\u5f15\u6570\u306b\u6e21\u3057\u3066\u547c\u3073\u51fa\u3057\u3066\u3044\u307e\u3059\u304c\u3001
\n@req\u306f\u4f55\u304b\u3068\u3044\u3046\u3068\u3001ActionDispatch::Request \u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3042\u308a\u3001
\n@by\u306f\u3001\u4eca\u56de\u306e\u5834\u5408\u306f Memcached \u3092\u30df\u30c9\u30eb\u30a6\u30a7\u30a2\u3068\u3057\u3066\u5229\u7528\u3057\u3066\u3044\u308b\u306e\u3067\u3001 ActionDispatch::Middleware::Session::MemCacheStore \u30af\u30e9\u30b9\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u90a3\u4e48\uff0c\u8ba9\u6211\u4eec\u6765\u770b\u4e00\u4e0bActionDispatch::Middleware::Session::MemCacheStore\u3002
\n\u7531\u4e8e\u6574\u4e2a\u4ee3\u7801\u91cf\u5f88\u77ed\uff0c\u6211\u5c06\u5168\u90e8\u8d34\u51fa\u6765\u3002<\/p>\n
require<\/span> \"action_dispatch\/middleware\/session\/abstract_store\"<\/span>\r\nbegin<\/span>\r\n  require<\/span> \"rack\/session\/dalli\"<\/span>\r\nrescue<\/span> LoadError<\/span> =><\/span> e<\/span>\r\n  $stderr<\/span>.<\/span>puts<\/span> \"You don't have dalli installed in your application. Please add it to your Gemfile and run bundle install\"<\/span>\r\n  raise<\/span> e<\/span>\r\nend<\/span>\r\n\r\nmodule<\/span> ActionDispatch<\/span>\r\n  module<\/span> Session<\/span>\r\n    # A session store that uses MemCache to implement storage.<\/span>\r\n    #<\/span>\r\n    # ==== Options<\/span>\r\n    # * <tt>expire_after<\/tt>  - The length of time a session will be stored before automatically expiring.<\/span>\r\n    class<\/span> MemCacheStore<\/span> <<\/span> Rack<\/span>::<\/span>Session<\/span>::<\/span>Dalli<\/span>\r\n      include<\/span> Compatibility<\/span>\r\n      include<\/span> StaleSessionCheck<\/span>\r\n      include<\/span> SessionObject<\/span>\r\n\r\n      def<\/span> initialize<\/span>(<\/span>app<\/span>,<\/span> options<\/span> =<\/span> {})<\/span>\r\n        options<\/span>[<\/span>:expire_after<\/span>]<\/span> ||=<\/span> options<\/span>[<\/span>:expires<\/span>]<\/span>\r\n        super<\/span>\r\n      end<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u55ef\uff0c\u4f3c\u4e4e\u8fd9\u91cc\u6ca1\u6709load_session\u65b9\u6cd5\u3002<\/p>\n
\u5f53\u67e5\u770b ActionDispatch::Middleware::Session::AbstractStore \u88ab require \u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u53d1\u73b0 load_session \u65b9\u6cd5\u672c\u8eab\u662f\u5b58\u5728\u7684\uff0c\u4f46\u662f\u5b83\u6ca1\u6709\u5b9e\u9645\u5b9e\u73b0\u3002<\/p>\n
def<\/span> load_session<\/span>(<\/span>env<\/span>)<\/span>\r\n  stale_session_check!<\/span> {<\/span> super<\/span> }<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u5728load_session\u51fd\u6570\u5185\u90e8\uff0c\u8fdb\u884c\u4e86stale_session_check!\u64cd\u4f5c\uff0c\u5e76\u4e14\u5728\u5176\u4e2d\u4f7f\u7528yield\u8bed\u53e5\u3002<\/p>\n
def<\/span> stale_session_check!<\/span>\r\n  yield<\/span>\r\nrescue<\/span> ArgumentError<\/span> =><\/span> argument_error<\/span>\r\n  if<\/span> argument_error<\/span>.<\/span>message<\/span> =~<\/span> %r{undefined class\/module ([<\/span>\\w<\/span>:]*<\/span>\\w<\/span>)}<\/span>\r\n    begin<\/span>\r\n      # Note that the regexp does not allow $1 to end with a ':'.<\/span>\r\n      $1<\/span>.<\/span>constantize<\/span>\r\n    rescue<\/span> LoadError<\/span>,<\/span> NameError<\/span>\r\n      raise<\/span> ActionDispatch<\/span>::<\/span>Session<\/span>::<\/span>SessionRestoreError<\/span>\r\n    end<\/span>\r\n    retry<\/span>\r\n  else<\/span>\r\n    raise<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u5728\u8fd9\u91cc\uff0cstale_session_check!\u7684\u5757\u53c2\u6570\u662fsuper\uff0c\u6240\u4ee5\u5e94\u8be5\u5728\u7ee7\u627f\u7684\u7c7b\u4e2d\u6709load_session\u7684\u5b9e\u4f53\u3002\u5f53\u67e5\u770b\u7ee7\u627f\u7684Rack::Session::Abstract::Persisted\u65f6\uff0c\u53ef\u4ee5\u627e\u5230\u5176\u4e2d\u7684\u5185\u5bb9\u3002<\/p>\n
\u56e0\u6b64\uff0c\u6211\u5011\u73fe\u5728\u8f49\u5f80Rack\u7684\u4e16\u754c\uff0c\u96e2\u958bRails\u7684\u9818\u57df\u3002<\/p>\n
\u53c2\u8003\uff1aGitHub\u4e0a\u7684rack\/rack<\/p>\n
\u5b9d\u77f3\uff1a’\u67b6’<\/h3>\n
\u4ee5\u4e0b\u662f\u63d0\u53d6Rack::Session::Abstract::Persisted\u4ee3\u7801\u7684\u6458\u5f55\u3002<\/p>\n
...<\/span>\r\n\r\nclass<\/span> Persisted<\/span>\r\n  ...<\/span>\r\n\r\n  def<\/span> load_session<\/span>(<\/span>req<\/span>)<\/span>\r\n    sid<\/span> =<\/span> current_session_id<\/span>(<\/span>req<\/span>)<\/span>\r\n    sid<\/span>,<\/span> session<\/span> =<\/span> find_session<\/span>(<\/span>req<\/span>,<\/span> sid<\/span>)<\/span>\r\n    [<\/span>sid<\/span>,<\/span> session<\/span> ||<\/span> {}]<\/span>\r\n  end<\/span>\r\n\r\n  ...<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u5728load_session\u4e2d\u8c03\u7528\u4e86find_session\uff0c\u4f46\u662ffind_session\u5e76\u672a\u5728Rack::Session::Abstract::Persisted\u4e2d\u5b9e\u73b0\u3002
\nfind_session\u4f4d\u4e8eRails\u7684ActionDispatch::Middleware::Session::MemCacheStore\u7684\u7236\u7c7bRack::Session::Dalli\u4e2d\u3002<\/p>\n
\u6240\u4ee5\uff0c\u6700\u540e\u6211\u4eec\u6765\u8c08\u8c08Dalli\u7684\u4e16\u754c\u3002
\nDalli\u662f\u4e00\u4e2a\u5907\u53d7\u8d5e\u8a89\u7684Rails Memcached\u5ba2\u6237\u7aef\u5e93\u3002<\/p>\n
\u53c2\u8003: GitHub\u4e0a\u7684petergoldstein\/dalli<\/p>\n
\u5b9d\u77f3\uff1a\u201c\u8fbe\u5229\u201d<\/h3>\n
\u5728 Rack::Session::Dalli \u7c7b\u4e2d\u6709\u4e00\u4e2a find_session \u65b9\u6cd5\uff0c\u4f46\u5728\u5176\u4e2d\u8c03\u7528\u4e86 get_session \u65b9\u6cd5\u3002<\/p>\n
def<\/span> find_session<\/span>(<\/span>req<\/span>,<\/span> sid<\/span>)<\/span>\r\n  get_session<\/span> req<\/span>.<\/span>env<\/span>,<\/span> sid<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u8fdb\u4e00\u6b65\u89c2\u5bdf\uff0cget_session\u51fd\u6570\u5185\u90e8\u5bf9with_block\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u4f20\u9012\u4e86\u4e00\u4e2a\u5757\uff0c\u800c\u5728\u8be5\u5757\u4e2d\u6267\u884c\u4e86dc.get\u64cd\u4f5c\u3002<\/p>\n
def<\/span> get_session<\/span>(<\/span>env<\/span>,<\/span> sid<\/span>)<\/span>\r\n  with_block<\/span>(<\/span>env<\/span>,<\/span> [<\/span>nil<\/span>,<\/span> {}])<\/span> do<\/span> |<\/span>dc<\/span>|<\/span>\r\n    unless<\/span> sid<\/span> and<\/span> !<\/span>sid<\/span>.<\/span>empty?<\/span> and<\/span> session<\/span> =<\/span> dc<\/span>.<\/span>get<\/span>(<\/span>sid<\/span>)<\/span>\r\n      old_sid<\/span>,<\/span> sid<\/span>,<\/span> session<\/span> =<\/span> sid<\/span>,<\/span> generate_sid_with<\/span>(<\/span>dc<\/span>),<\/span> {}<\/span>\r\n      unless<\/span> dc<\/span>.<\/span>add<\/span>(<\/span>sid<\/span>,<\/span> session<\/span>,<\/span> @default_ttl<\/span>)<\/span>\r\n        sid<\/span> =<\/span> old_sid<\/span>\r\n        redo<\/span> # generate a new sid and try again<\/span>\r\n      end<\/span>\r\n    end<\/span>\r\n    [<\/span>sid<\/span>,<\/span> session<\/span>]<\/span>\r\n  end<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
with_block\u306f Rack::Session::Dalli \u5185\u3067\u30e1\u30bd\u30c3\u30c9\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u3066\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570@pool\u306b\u5bfe\u3057\u3066with\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
def<\/span> with_block<\/span>(<\/span>env<\/span>,<\/span> default<\/span>=<\/span>nil<\/span>,<\/span> &<\/span>block<\/span>)<\/span>\r\n  @mutex<\/span>.<\/span>lock<\/span> if<\/span> @mutex<\/span> and<\/span> env<\/span>[<\/span>'rack.multithread'<\/span>]<\/span>\r\n  @pool<\/span>.<\/span>with<\/span>(<\/span>&<\/span>block<\/span>)<\/span>\r\nrescue<\/span> ::<\/span>Dalli<\/span>::<\/span>DalliError<\/span>,<\/span> Errno<\/span>::<\/span>ECONNREFUSED<\/span>\r\n  raise<\/span> if<\/span> $!<\/span>.<\/span>message<\/span> =~<\/span> \/undefined class\/<\/span>\r\n  if<\/span> $VERBOSE<\/span>\r\n    warn<\/span> \"<\/span>#{<\/span>self<\/span>}<\/span> is unable to find memcached server.\"<\/span>\r\n    warn<\/span> $!<\/span>.<\/span>inspect<\/span>\r\n  end<\/span>\r\n  default<\/span>\r\nensure<\/span>\r\n  @mutex<\/span>.<\/span>unlock<\/span> if<\/span> @mutex<\/span> and<\/span> @mutex<\/span>.<\/span>locked?<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u5728\u8fd9\u91cc\uff0c\u5b9e\u4f8b\u53d8\u91cf@pool\u5728Rack::Session::Dalli\u7684\u521d\u59cb\u5316\u65b9\u6cd5\u4e2d\u88ab\u5b9a\u4e49\uff0c\u5982\u679c\u7f13\u5b58\u4e0d\u5b58\u5728\uff0c\u5219\u4f1a\u521b\u5efa\u4e00\u4e2a ::Dalli::Client \u5bf9\u8c61\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c@pool\u662f ::Dalli::Client \u7c7b\u7684\u4e00\u4e2a\u5b9e\u4f8b\u3002<\/p>\n
\u5728Dalli::Client\u4e2d\u5b9a\u4e49\u4e86with\u65b9\u6cd5\uff0c\u5176\u5185\u5bb9\u53ea\u6709yield self\u3002<\/p>\n
def<\/span> with<\/span>\r\n  yield<\/span> self<\/span>\r\nend<\/span>\r\n<\/code><\/pre>\n
\u6362\u53e5\u8bdd\u8bf4\uff0c\u5728 with_block \u5185\u90e8\uff0cdc.get \u8c03\u7528\u4e86 ::Dalli::Client \u7c7b\u7684\u5bf9\u8c61\u7684 get \u65b9\u6cd5\u3002\u5728\u8fd9\u91cc\uff0c\u4ece Memcached \u4e2d\u83b7\u53d6\u7684\u503c\u4f1a\u4f5c\u4e3a ActionDispatch::Request::Session \u7c7b\u5bf9\u8c61\u7684 @_request \u5b9e\u4f8b\u7684\u952e\u548c\u503c\u3002<\/p>\n
\u5c3d\u7ba1\u53d8\u5f97\u5f88\u957f\uff0c\u4f46\u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee3\u7801\u4e86\u89e3\u5982\u4f55\u4eceMemcached\u52a0\u8f7dsession[:hoge]\u5230session\u53d8\u91cf\u4e2d\u3002<\/p>\n
\u6211\u63a8\u8350\u60a8\u5c1d\u8bd5\u9605\u8bfb\u4e00\u6b21Ruby\u5e93\u7684\u4ee3\u7801\uff0c\u5982Rails\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4ec5\u80fd\u5e2e\u52a9\u60a8\u4e86\u89e3\u5176\u5de5\u4f5c\u539f\u7406\uff0c\u8fd8\u80fd\u63d0\u4f9b\u6709\u7528\u7684\u8bbe\u8ba1\u548c\u5b9e\u73b0\u53c2\u8003\u3002<\/p>\n
\u4e0b\u6b21\u662f\u7531@ham0215\u521b\u4f5c\u7684”\u521b\u5efa\u4e00\u4e2a\u80fd\u5c06\u5927\u548c\u7cbe\u795e\u6ce8\u5165Ruby\u7684\u5b9d\u77f3”\u3002\u656c\u8bf7\u671f\u5f85\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3053\u3093\u306b\u3061\u306f\u3001\u98df\u3079\u30ed\u30b0 DevOps \u30c1\u30fc\u30e0 \/ \u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30b9\u30c1\u30fc\u30e0\u306e\u7232\u5ca1\u3067\u3059\u3002 \u98df\u3079\u30ed\u30b0 Advent C […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-34723","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u5f7b\u5e95\u7406\u89e3\u4e86Rails\u7684session - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5f7b\u5e95\u7406\u89e3\u4e86rails\u7684session\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5f7b\u5e95\u7406\u89e3\u4e86Rails\u7684session\" \/>\n<meta property=\"og:description\" content=\"\u3053\u3093\u306b\u3061\u306f\u3001\u98df\u3079\u30ed\u30b0 DevOps \u30c1\u30fc\u30e0 \/ \u30c7\u30fc\u30bf\u30b5\u30a4\u30a8\u30f3\u30b9\u30c1\u30fc\u30e0\u306e\u7232\u5ca1\u3067\u3059\u3002 \u98df\u3079\u30ed\u30b0 Advent C […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5f7b\u5e95\u7406\u89e3\u4e86rails\u7684session\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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