multi-process-session/bin/index.js

manage multi process session

// Generated by CoffeeScript 2.3.1
(function() {
  /*
  Created by massimo on 2014/4/14.
  */
  var Session, _, sessionHelper;

  _ = require("underscore");

  sessionHelper = require('./sessionHelper');

  Session = require('./session');

  /*
      session middleware
      @param {Object} options
      @param {String} [options.type="cookie"] session type: cookie or token
      @param {Number} [options.expire=604800] expire seconds
      @param {Boolean} [options.refresh=true] refresh every time
      @param {String} [options.secret="guess me if you can"]  secret for generate session id
      @param {Object} [options.redisOptions] options to create redis client
  */
  module.exports = function(options) {
    var defaultOptions;
    defaultOptions = {
      type: "cookie",
      expire: 604800,
      refresh: true, // auto refresh cookie
      secret: 'guess me if you can',
      redisOptions: {
        host: '127.0.0.1',
        port: 6379
      }
    };
    options = _.extend(defaultOptions, options);
    return function(req, res, next) {
      var SESSION_ID, session, sid;
      sid = "";
      if (options.type === "cookie") { // is browser
        SESSION_ID = "sid";
        //cookie
        if (req.cookies) {
          sid = req.cookies[SESSION_ID];
          if (!sid) {
            sid = sessionHelper.genSID(options.secret);
            res.cookie(SESSION_ID, sid, { // save cookie
              maxAge: options.expire * 1000
            });
          } else if (options.refresh) {
            res.cookie(SESSION_ID, sid, { // save cookie
              maxAge: options.expire * 1000
            });
          }
        } else {
          throw new Error("no cookie support"); // is api
        }
      } else {
        sid = req.query.Token || sessionHelper.genSID(options.secret);
      }
      res.on("finish", function() {
        return res.session && res.session.save(options.expire, function(err) {
          if (err) {
            return console.error(err);
          }
        });
      });
      return session = new Session(sid, options.redisOptions, function(err) {
        if (err) {
          console.error(err);
          return next(err);
        } else {
          req.session = res.session = session;
          return next();
        }
      });
    };
  };

}).call(this);