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/*!
* Connect - session - MemoryStore
* Copyright(c) 2010 Sencha Inc.
* Copyright(c) 2011 TJ Holowaychuk
* MIT Licensed
*/
/**
* Module dependencies.
*/
var Store = require('./store')
, utils = require('../../utils')
, Session = require('./session');
/**
* Initialize a new `MemoryStore`.
*
* @api public
*/
var MemoryStore = module.exports = function MemoryStore() {
this.sessions = {};
};
/**
* Inherit from `Store.prototype`.
*/
MemoryStore.prototype.__proto__ = Store.prototype;
/**
* Attempt to fetch session by the given `sid`.
*
* @param {String} sid
* @param {Function} fn
* @api public
*/
MemoryStore.prototype.get = function(sid, fn){
var self = this;
process.nextTick(function(){
var expires
, sess = self.sessions[sid];
if (sess) {
sess = JSON.parse(sess);
expires = 'string' == typeof sess.cookie.expires
? new Date(sess.cookie.expires)
: sess.cookie.expires;
if (!expires || new Date < expires) {
fn(null, sess);
} else {
self.destroy(sid, fn);
}
} else {
fn();
}
});
};
/**
* Commit the given `sess` object associated with the given `sid`.
*
* @param {String} sid
* @param {Session} sess
* @param {Function} fn
* @api public
*/
MemoryStore.prototype.set = function(sid, sess, fn){
var self = this;
process.nextTick(function(){
self.sessions[sid] = JSON.stringify(sess);
fn && fn();
});
};
/**
* Destroy the session associated with the given `sid`.
*
* @param {String} sid
* @api public
*/
MemoryStore.prototype.destroy = function(sid, fn){
var self = this;
process.nextTick(function(){
delete self.sessions[sid];
fn && fn();
});
};
/**
* Invoke the given callback `fn` with all active sessions.
*
* @param {Function} fn
* @api public
*/
MemoryStore.prototype.all = function(fn){
var arr = []
, keys = Object.keys(this.sessions);
for (var i = 0, len = keys.length; i < len; ++i) {
arr.push(this.sessions[keys[i]]);
}
fn(null, arr);
};
/**
* Clear all sessions.
*
* @param {Function} fn
* @api public
*/
MemoryStore.prototype.clear = function(fn){
this.sessions = {};
fn && fn();
};
/**
* Fetch number of sessions.
*
* @param {Function} fn
* @api public
*/
MemoryStore.prototype.length = function(fn){
fn(null, Object.keys(this.sessions).length);
};