org.apache.inlong.common.util.NetworkUtils Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.inlong.common.util;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;
public class NetworkUtils {
private static final Logger LOGGER = LoggerFactory.getLogger(NetworkUtils.class);
private static String localIp;
static {
localIp = getLocalIp();
}
/**
* get local ip
*/
public static String getLocalIp() {
if (StringUtils.isNotBlank(localIp)) {
return localIp;
}
Enumeration allInterface;
String ip = "127.0.0.1";
try {
allInterface = NetworkInterface.getNetworkInterfaces();
while (allInterface.hasMoreElements()) {
NetworkInterface oneInterface = allInterface.nextElement();
if (oneInterface.isLoopback() || !oneInterface.isUp() || oneInterface.isVirtual()) {
continue;
}
Enumeration allAddress = oneInterface.getInetAddresses();
while (allAddress.hasMoreElements()) {
InetAddress oneAddress = allAddress.nextElement();
localIp = oneAddress.getHostAddress();
if (StringUtils.isEmpty(localIp) || localIp.equals("127.0.0.1") || localIp.contains(":")) {
continue;
}
return localIp;
}
}
} catch (SocketException e) {
LOGGER.error("error while get local ip", e);
}
localIp = ip;
return localIp;
}
}