ClientIdGenerator.java

package com.easyooo.framework.cache.transaction;

import java.net.InetAddress;
import java.net.UnknownHostException;

import org.springframework.beans.factory.InitializingBean;

import com.easyooo.framework.common.net.InetAddressUtil;
import com.easyooo.framework.common.net.ProcessUtil;

/**
 * Client Id 生成器， 确保所有JVM进程的唯一性
 * 
 * @author Killer
 */
public class ClientIdGenerator implements InitializingBean{
	
	public static String clientId; 
	
	/**
	 * 获取当前IP地址及进程号
	 * @return
	 */
	protected String genClientId()throws UnknownHostException{
		InetAddress addr = InetAddressUtil.getLocalHostLANAddress();
		String ip = addr.getHostAddress();
		Integer pid = ProcessUtil.getCurrentPid();
		return ip + "@" + pid;
	}
	
	@Override
	public void afterPropertiesSet() throws Exception {
		if(clientId == null){
			clientId = genClientId();
		}
	}
	
	/**
	 * 如果在获取不到当前机器IP及进程号的情况下，则需要配置该属性，来确保当前JVM进程的唯一性
	 */
	public void setClientId(String customClientId) {
		if(ClientIdGenerator.clientId == null){
			ClientIdGenerator.clientId = customClientId;
		}
	}
	
	public static String getClientId(){
		return clientId;
	}
}