/*
 * P2PFaaS - A framework for FaaS Load Balancing
 * Copyright (c) 2019 - 2022. Gabriele Proietti Mattia <pm.gabriele@outlook.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

package service_discovery

var cachedMachineNumber = int64(0)
var cachedMachineIpsList []string

// GetCachedMachineNumber returns the number of machines of the last call to machine list
func GetCachedMachineNumber() int64 {
	return cachedMachineNumber
}

func GetCachedMachinesIpsList() ([]string, error) {
	if GetCachedMachineNumber() == 0 {
		return GetMachinesIpsList()
	}

	return cachedMachineIpsList, nil
}