ScanClient/code/HXX.Scanner.Biz/biz/biz_limit.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Collections.Concurrent;

namespace HXX.Scanner.Biz
{
    class biz_limit
    {
        private static object lockObj = new object();
        private static ConcurrentDictionary<string, DateTime> dic = new ConcurrentDictionary<string, DateTime>();
        private static List<string> WH = new List<string>() { "startScan", "loadImage", "reUpload" };

        public static bool check(string key)
        {
            bool result = false;

            lock (lockObj)
            {
                if (WH.Contains(key))
                {
                    if (dic.Keys.Contains(key))
                    {
                        if ((DateTime.Now - dic[key]).TotalSeconds > 1)
                        {
                            dic[key] = DateTime.Now;
                            result = true;
                        }
                        else
                        {
                            result = false;
                        }
                    }
                    else
                    {
                        dic[key] = DateTime.Now;
                        result = true;
                    }
                }
                else
                {
                    result = true;
                }
            }

            return result;
        }
    }
}