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如何使用nodejs和express向会话（redis）添加事件监听器？

发布于 2024-12-10 06:19:25 字数 71 浏览 0 评论 0原文

我想在用户会话被破坏/超时时运行一个函数。有没有办法使用 redis 会话存储在 Nodejs 中与 Express 一起使用？

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北方的巷 2024-12-17 06:19:25

会话存储本身继承自 EventEmitter：

https://github .com/senchalabs/connect/blob/master/lib/middleware/session/store.js

尽管没有一个实现会发出事件供您绑定，包括 redis 存储：

https://github.com/visionmedia/connect-redis/blob /master/lib/connect-redis.js

你可以很容易地分叉 connect-redis 并自己破解这些事件，这样你就可以在需要的地方绑定到它们......

RedisStore.prototype.destroy = function(sid, fn){
    sid = this.prefix + sid;
    this.client.del(sid, fn);
  };

变成

RedisStore.prototype.destroy = function(sid, fn){
    sid = this.prefix + sid;
    this.client.del(sid, fn);
    this.emit('destroy');
  };

然后你可以绑定到“破坏”事件...

var connect = require('connect')
      , RedisStore = require('connect-redis')(connect);

var store = new RedisStore;

store.on('destroy', function() {
  // session was destroyed
});

connect.createServer(
  connect.cookieParser(),
  connect.session({ store: store, secret: 'keyboard cat' })
);

The session store's themselves inherit from EventEmitter:

https://github.com/senchalabs/connect/blob/master/lib/middleware/session/store.js

Although none of the implementations emit events for you to bind to, including the redis store:

https://github.com/visionmedia/connect-redis/blob/master/lib/connect-redis.js

You could quite easily fork connect-redis and hack these events in yourself so that you may bind to them where you need to....

RedisStore.prototype.destroy = function(sid, fn){
    sid = this.prefix + sid;
    this.client.del(sid, fn);
  };

becomes

RedisStore.prototype.destroy = function(sid, fn){
    sid = this.prefix + sid;
    this.client.del(sid, fn);
    this.emit('destroy');
  };

Then you may bind to the "destroy" event...

var connect = require('connect')
      , RedisStore = require('connect-redis')(connect);

var store = new RedisStore;

store.on('destroy', function() {
  // session was destroyed
});

connect.createServer(
  connect.cookieParser(),
  connect.session({ store: store, secret: 'keyboard cat' })
);

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