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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2018 Ericsson. All rights reserved.
* ================================================================================
* 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
*
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.apex.context.test.utils;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Collections;
import java.util.Enumeration;
import java.util.TreeSet;
/**
* The Class NetworkUtils contains some utility functions for getting network information for context tests.
*/
public class NetworkUtils {
/**
* Instantiates a new network utils.
*/
private NetworkUtils() {}
/**
* The JGroups IP address must be set to a real (not loopback) IP address for Infinispan to
* work. In order to ensure that all the JVMs in a test pick up the same IP address, this
* function sets the address to be the first non-loopback IPv4 address on a host
*
* @return Set of IPv4 addresses
* @throws SocketException throw socket exception if error occurs
*/
public static TreeSet<String> getIPv4NonLoopAddresses() throws SocketException {
final TreeSet<String> ipAddressSet = new TreeSet<String>();
final Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
for (final NetworkInterface netint : Collections.list(nets)) {
final Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
for (final InetAddress inetAddress : Collections.list(inetAddresses)) {
// Look for real IPv4 internet addresses
if (!inetAddress.isLoopbackAddress() && inetAddress.getAddress().length == 4) {
ipAddressSet.add(inetAddress.getHostAddress());
}
}
}
return ipAddressSet;
}
}
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