com.dtstack.jlogstash.utils.Public.java Source code

Introduction

Here is the source code for com.dtstack.jlogstash.utils.Public.java

Source

/**
 * 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(?)
 * Date: 20161128 ?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();
    }
}