| /* |
| * 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.carbondata.core.dictionary.service; |
| |
| import java.net.Inet4Address; |
| import java.net.InetAddress; |
| import java.net.NetworkInterface; |
| import java.net.SocketException; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.List; |
| |
| import org.apache.commons.lang3.SystemUtils; |
| import org.apache.log4j.Logger; |
| |
| public abstract class AbstractDictionaryServer { |
| |
| public String findLocalIpAddress(Logger LOGGER) { |
| try { |
| String defaultIpOverride = System.getenv("SPARK_LOCAL_IP"); |
| if (defaultIpOverride != null) { |
| return defaultIpOverride; |
| } else { |
| InetAddress address = InetAddress.getLocalHost(); |
| if (address.isLoopbackAddress()) { |
| // Address resolves to something like 127.0.1.1, which happens on Debian; try to find |
| // a better address using the local network interfaces |
| // getNetworkInterfaces returns ifs in reverse order compared to ifconfig output order |
| // on unix-like system. On windows, it returns in index order. |
| // It's more proper to pick ip address following system output order. |
| Enumeration<NetworkInterface> activeNetworkIFs = NetworkInterface.getNetworkInterfaces(); |
| List<NetworkInterface> reOrderedNetworkIFs = new ArrayList<NetworkInterface>(); |
| while (activeNetworkIFs.hasMoreElements()) { |
| reOrderedNetworkIFs.add(activeNetworkIFs.nextElement()); |
| } |
| |
| if (!SystemUtils.IS_OS_WINDOWS) { |
| Collections.reverse(reOrderedNetworkIFs); |
| } |
| |
| for (NetworkInterface ni : reOrderedNetworkIFs) { |
| Enumeration<InetAddress> inetAddresses = ni.getInetAddresses(); |
| while (inetAddresses.hasMoreElements()) { |
| InetAddress addr = inetAddresses.nextElement(); |
| if (!addr.isLinkLocalAddress() && !addr.isLoopbackAddress() |
| && addr instanceof Inet4Address) { |
| // We've found an address that looks reasonable! |
| LOGGER.warn("Your hostname, " + InetAddress.getLocalHost().getHostName() |
| + " resolves to a loopback address: " + address.getHostAddress() + "; using " |
| + addr.getHostAddress() + " instead (on interface " + ni.getName() + ")"); |
| LOGGER.warn("Set SPARK_LOCAL_IP if you need to bind to another address"); |
| return addr.getHostAddress(); |
| } |
| } |
| LOGGER.warn("Your hostname, " + InetAddress.getLocalHost().getHostName() |
| + " resolves to a loopback address: " + address.getHostAddress() |
| + ", but we couldn't find any external IP address!"); |
| LOGGER.warn("Set SPARK_LOCAL_IP if you need to bind to another address"); |
| } |
| } |
| return address.getHostAddress(); |
| } |
| } catch (UnknownHostException e) { |
| LOGGER.error("do not get local host address:" + e.getMessage(), e); |
| throw new RuntimeException(e); |
| } catch (SocketException e) { |
| LOGGER.error("do not get net work interface:" + e.getMessage(), e); |
| throw new RuntimeException(e); |
| } |
| } |
| } |