java 分布式id生成工具类

import lombok.extern.slf4j.Slf4j;

import java.lang.management.ManagementFactory;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketExcept服务器托管网ion;
import java.net.UnknownHostException;
import java.util.concurrent.ThreadLocalRandom;

/**
 * 分布式高效有序ID生成
 *
 * 
优化开源项目：https://gitee.com/yu120/sequence
 */
@Slf4j
public final class IdGenerator {

    /**
     * 时间起始标记点，作为基准，一般取系统的最近时间（一旦确定不能变动）
     */
    private static final long twepoch = 1288834974657L;
    /**
     * 机器标识位数
     */
    private final long workerIdBits = 5L;
    private final long datacenterIdBits = 5L;
    private final long maxWorkerId = ~(-1L  maxWorkerId || workerId  maxDatacenterId || datacenterId  0) {
            // 获取jvm进程id
            mpid.append(name.split("@")[0]);
        }
        /*
         * MAC + PID 的 hashcode 获取16个低位
         */
        return (mpid.toString().服务器托管网hashCode() & 0xffff) % (maxWorkerId + 1);
    }

    /**
     * 数据标识id部分
     */
    private long getDatacenterId(long maxDatacenterId) {
        long id = 0L;
        try {
            if (null == this.inetAddress) {
                this.inetAddress = InetAddress.getLocalHost();
            }
            NetworkInterface network = NetworkInterface.getByInetAddress(this.inetAddress);
            if (null == network) {
                id = 1L;
            } else {
                byte[] mac = network.getHardwareAddress();
                if (null != mac) {
                    id = ((0x000000FF & (long) mac[mac.length - 2]) | (0x0000FF00 & (((long) mac[mac.length - 1]) > 6;
                    id = id % (maxDatacenterId + 1);
                }
            }
        } catch (SocketException | UnknownHostException e) {
            log.warn(" getDatacenterId: ", e);
        }
        return id;
    }

    /**
     * 获取下一个 ID
     *
     * @return 下一个 ID
     */
    public synchronized long nextId() {
        long timestamp = timeGen();
        //闰秒
        if (timestamp > 22) + twepoch;
    }

}