package com.tejia.lijin.app.util;

import java.util.HashMap;
import java.util.Map;

//重复事件响应过滤器
public class DuplicateEventFilterUtil {
    private static Map<String, Long> lastAllowTime = new HashMap<>();

    //是否允许事件响应
    public static synchronized boolean allowEvent(String key) {
        if (key == null)
            return true;
        if (lastAllowTime.get(key) == null)
            lastAllowTime.put(key, 0L);
        if (System.currentTimeMillis() - lastAllowTime.get(key) < 500)
            return false;
        lastAllowTime.put(key, System.currentTimeMillis());
        return true;
    }

    public static synchronized boolean allowEvent(String key,int ms) {
        if (key == null)
            return true;
        if (lastAllowTime.get(key) == null)
            lastAllowTime.put(key, 0L);
        if (System.currentTimeMillis() - lastAllowTime.get(key) < ms)
            return false;
        lastAllowTime.put(key, System.currentTimeMillis());
        return true;
    }

}