/*
 * Copyright 2013-2023 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 org.springframework.cloud.kubernetes.commons.loadbalancer;

import java.util.StringJoiner;

import org.springframework.cloud.kubernetes.commons.discovery.KubernetesServiceInstance;
import org.springframework.util.StringUtils;

/**
 * @author Ryan Baxter
 */
public interface KubernetesServiceInstanceMapper<T> {

	KubernetesServiceInstance map(T service);

	static String createHost(String serviceName, String namespace, String clusterDomain) {
		String namespaceToUse = StringUtils.hasText(namespace) ? namespace : "default";
		return new StringJoiner(".").add(serviceName).add(namespaceToUse).add("svc").add(clusterDomain).toString();
	}

}
