com.tencent.polaris.api.utils.IPAddressUtils Maven / Gradle / Ivy

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/*
 * Tencent is pleased to support the open source community by making polaris-java available.
 *
 * Copyright (C) 2021 THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/BSD-3-Clause
 *
 * 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.tencent.polaris.api.utils;

import com.tencent.polaris.logging.LoggerFactory;
import org.slf4j.Logger;

import java.net.InetAddress;

/**
 * @author Haotian Zhang
 */
public class IPAddressUtils {

    private static final Logger LOG = LoggerFactory.getLogger(IPAddressUtils.class);

    public static String getIpCompatible(String ip) {
        if (StringUtils.isEmpty(ip)) {
            return ip;
        }
        if (ip.contains(":") && !ip.startsWith("[") && !ip.endsWith("]")) {
            return "[" + ip + "]";
        }
        return ip;
    }

    public static String getHostName() {
        try {
            String hostname = System.getenv("HOSTNAME");
            if (StringUtils.isBlank(hostname)) {
                hostname = System.getProperty("HOSTNAME");
            }
            if (StringUtils.isBlank(hostname)) {
                hostname = InetAddress.getLocalHost().getHostName();
            }
            return hostname;
        } catch (Exception e) {
            LOG.warn("get host name error", e);
            return "";
        }
    }
}