// Copyright 2025 Apollo Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package roundrobin

import (
	"github.com/apolloconfig/agollo/v4/env/config"
)

// RoundRobin 轮询调度
type RoundRobin struct {
}

// Load 负载均衡
func (r *RoundRobin) Load(servers map[string]*config.ServerInfo) *config.ServerInfo {
	var returnServer *config.ServerInfo
	for _, server := range servers {
		// if some node has down then select next node
		if server.IsDown {
			continue
		}
		returnServer = server
		break
	}
	return returnServer
}
