com.dtstack.jlogstash.utils.Public Maven / Gradle / Ivy

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/**
 * 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 com.dtstack.jlogstash.utils;

/**
 * 
 * Reason: TODO ADD REASON(可选)
 * Date: 2016年11月28日 下午1:27:03
 * Company: www.dtstack.com
 * @author sishu.yss
 *
 */
import java.math.BigDecimal;
import java.net.InetAddress;

import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Public {

	private static final Logger publicLogger = LoggerFactory
			.getLogger(Public.class);

	public static String getHostNameForLiunx() {
		try {
			return (InetAddress.getLocalHost()).getHostName();
		} catch (Exception uhe) {
			String host = uhe.getMessage(); // host = "hostname: hostname"
			if (host != null) {
				int colon = host.indexOf(':');
				if (colon > 0) {
					return host.substring(0, colon);
				}
			}
			publicLogger.error("getHostName:{}", uhe.getCause());
			return "UnknownHost";
		}
	}

	public static String getHostName() {
		if (System.getenv("COMPUTERNAME") != null) {
			return System.getenv("COMPUTERNAME");
		} else {
			return getHostNameForLiunx();
		}
	}

	public static String getHostAddress() {
		try {
			InetAddress ia = InetAddress.getLocalHost();
			return ia.getHostAddress();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			publicLogger.error("getHostAddress:{}", e.getCause());
		}
		return "127.0.0.1";
	}

	public static String getTimeStamp(DateTimeZone timeZone) {
		return timeZone!=null?DateTime.now(timeZone).toString():DateTime.now().toString();
	}

	public static int getIntValue(double d) {
		return new BigDecimal(d).setScale(0, BigDecimal.ROUND_HALF_UP)
				.intValue();
	}
}