exports.on = function(val){
    var con = new Con(), resolver = Promise.defer();
    pool.connect(function(err, client, done){
        if (err) {
            resolver.reject(err);
        } else {
            con.client = client;
            con.done = done;
            resolver.resolve(val);
        }
    });
    return resolver.promise.bind(con);
}




exports.on = function(val){
        var con = new Con();
        var connectAsync = Promise.promisify(pool.connect);
        return connectAsync().bind(con).then(function(client, done) {
            this.client = client;
            this.done = done;
            return val;
        });
}