metamaps--metamaps/realtime/node_modules/socket.io/lib/stores/memory.js

143 lines
1.9 KiB
JavaScript

/*!
* socket.io-node
* Copyright(c) 2011 LearnBoost <dev@learnboost.com>
* MIT Licensed
*/
/**
* Module dependencies.
*/
var crypto = require('crypto')
, Store = require('../store');
/**
* Exports the constructor.
*/
exports = module.exports = Memory;
Memory.Client = Client;
/**
* Memory store
*
* @api public
*/
function Memory (opts) {
Store.call(this, opts);
};
/**
* Inherits from Store.
*/
Memory.prototype.__proto__ = Store.prototype;
/**
* Publishes a message.
*
* @api private
*/
Memory.prototype.publish = function () { };
/**
* Subscribes to a channel
*
* @api private
*/
Memory.prototype.subscribe = function () { };
/**
* Unsubscribes
*
* @api private
*/
Memory.prototype.unsubscribe = function () { };
/**
* Client constructor
*
* @api private
*/
function Client () {
Store.Client.apply(this, arguments);
this.data = {};
};
/**
* Inherits from Store.Client
*/
Client.prototype.__proto__ = Store.Client;
/**
* Gets a key
*
* @api public
*/
Client.prototype.get = function (key, fn) {
fn(null, this.data[key] === undefined ? null : this.data[key]);
return this;
};
/**
* Sets a key
*
* @api public
*/
Client.prototype.set = function (key, value, fn) {
this.data[key] = value;
fn && fn(null);
return this;
};
/**
* Has a key
*
* @api public
*/
Client.prototype.has = function (key, fn) {
fn(null, key in this.data);
};
/**
* Deletes a key
*
* @api public
*/
Client.prototype.del = function (key, fn) {
delete this.data[key];
fn && fn(null);
return this;
};
/**
* Destroys the client.
*
* @param {Number} number of seconds to expire data
* @api private
*/
Client.prototype.destroy = function (expiration) {
if ('number' != typeof expiration) {
this.data = {};
} else {
var self = this;
setTimeout(function () {
self.data = {};
}, expiration * 1000);
}
return this;
};