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Splout SQL is a read only, horizontally scalable and partitioned SQL database that plays well with Hadoop.

There is a newer version: 0.3.0

package com.splout.db.common;

/*
 * #%L
 * Splout SQL Server
 * %%
 * Copyright (C) 2012 Datasalt Systems S.L.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 * #L%
 */

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Collection;
import java.util.Enumeration;
import java.util.LinkedList;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * From: http://pastebin.com/5X073pUc
 */
public class GetIPAddresses {

	private final static Log log = LogFactory.getLog(GetIPAddresses.class);
	
	/**
	 * Returns all available IP addresses.
	 * 
	 * In error case or if no network connection is established, we return an empty list here.
	 * 

	 * Loopback addresses are excluded - so 127.0.0.1 will not be never returned.
	 * 
	 * The "primary" IP might not be the first one in the returned list.
	 * 
	 * @return Returns all IP addresses (can be an empty list in error case or if network connection is missing).
	 * @throws SocketException
	 * @since 0.1.0
	 */
	public static Collection getAllLocalIPs() throws SocketException {
		LinkedList listAdr = new LinkedList();

		Enumeration nifs = NetworkInterface.getNetworkInterfaces();
		if(nifs == null)
			return listAdr;

		while(nifs.hasMoreElements()) {
			NetworkInterface nif = nifs.nextElement();
			// We ignore subinterfaces - as not yet needed.
			Enumeration adrs = nif.getInetAddresses();
			while(adrs.hasMoreElements()) {
				InetAddress adr = adrs.nextElement();
				if(adr != null && !adr.isLoopbackAddress()
				    && (nif.isPointToPoint() || !adr.isLinkLocalAddress())) {
					log.info("Available site local address: " + adr);
					listAdr.add(adr);
				}
			}
		}
		return listAdr;
	}
	
	public static void main(String[] args) throws SocketException {
		GetIPAddresses.getAllLocalIPs();
	}
}