| /* |
| * 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.kylin.common.util; |
| |
| import org.apache.commons.lang.StringUtils; |
| import org.apache.kylin.common.KylinConfig; |
| import org.apache.kylin.common.persistence.ResourceStore; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.Inet4Address; |
| import java.net.Inet6Address; |
| import java.net.InetAddress; |
| import java.net.NetworkInterface; |
| import java.net.SocketException; |
| import java.net.UnknownHostException; |
| import java.util.Enumeration; |
| |
| public class ToolUtil { |
| |
| private ToolUtil() { |
| throw new IllegalStateException("Class ToolUtil is an utility class !"); |
| } |
| |
| public static String getConfFolder() { |
| final String CONF = "conf"; |
| String path = System.getProperty(KylinConfig.KYLIN_CONF); |
| if (StringUtils.isNotEmpty(path)) { |
| return path; |
| } |
| path = KylinConfig.getKylinHome(); |
| if (StringUtils.isNotEmpty(path)) { |
| return path + File.separator + CONF; |
| } |
| throw new RuntimeException("Cannot find conf folder."); |
| } |
| |
| public static String getMetaStoreId() throws IOException { |
| KylinConfig kylinConfig = KylinConfig.getInstanceFromEnv(); |
| ResourceStore store = ResourceStore.getStore(kylinConfig); |
| return store.getMetaStoreUUID(); |
| } |
| |
| |
| public static String getHostName() { |
| String hostname = System.getenv("COMPUTERNAME"); |
| if (StringUtils.isEmpty(hostname)) { |
| InetAddress address = null; |
| try { |
| address = InetAddress.getLocalHost(); |
| hostname = address.getHostName(); |
| if (StringUtils.isEmpty(hostname)) { |
| hostname = address.getHostAddress(); |
| } |
| } catch (UnknownHostException uhe) { |
| String host = uhe.getMessage(); // host = "hostname: hostname" |
| if (host != null) { |
| int colon = host.indexOf(':'); |
| if (colon > 0) { |
| return host.substring(0, colon); |
| } |
| } |
| hostname = "Unknown"; |
| } |
| } |
| return hostname; |
| } |
| |
| public static InetAddress getFirstNonLoopbackAddress(boolean preferIpv4, boolean preferIPv6) |
| throws SocketException { |
| Enumeration en = NetworkInterface.getNetworkInterfaces(); |
| while (en.hasMoreElements()) { |
| NetworkInterface element = (NetworkInterface) en.nextElement(); |
| for (Enumeration en2 = element.getInetAddresses(); en2.hasMoreElements();) { |
| InetAddress addr = (InetAddress) en2.nextElement(); |
| if (!addr.isLoopbackAddress()) { |
| if (addr instanceof Inet4Address) { |
| if (preferIPv6) { |
| continue; |
| } |
| return addr; |
| } |
| if (addr instanceof Inet6Address) { |
| if (preferIpv4) { |
| continue; |
| } |
| return addr; |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| public static InetAddress getFirstIPV4NonLoopBackAddress() throws SocketException { |
| return getFirstNonLoopbackAddress(true, false); |
| } |
| |
| } |