/*
 * Copyright 2013-2018 the original author or 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
 *
 *      https://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 com.alibaba.cloud.nacos.ribbon;

import com.alibaba.cloud.nacos.NacosDiscoveryProperties;
import com.netflix.client.config.IClientConfig;
import com.netflix.loadbalancer.ServerList;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.cloud.netflix.ribbon.PropertiesFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * integrated Ribbon by default.
 *
 * @author xiaojing
 * @author liujunjie
 */
@Configuration
@ConditionalOnRibbonNacos
public class NacosRibbonClientConfiguration {

	@Autowired
	private PropertiesFactory propertiesFactory;

	@Bean
	@ConditionalOnMissingBean
	public ServerList<?> ribbonServerList(IClientConfig config,
			NacosDiscoveryProperties nacosDiscoveryProperties) {
		if (this.propertiesFactory.isSet(ServerList.class, config.getClientName())) {
			ServerList serverList = this.propertiesFactory.get(ServerList.class, config,
					config.getClientName());
			return serverList;
		}
		NacosServerList serverList = new NacosServerList(nacosDiscoveryProperties);
		serverList.initWithNiwsConfig(config);
		return serverList;
	}

	@Bean
	@ConditionalOnMissingBean
	public NacosServerIntrospector nacosServerIntrospector() {
		return new NacosServerIntrospector();
	}

}
