Lot2Lot3/EInk.Lot3/Tools/GuidCache.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using SqlSugar;
using EInk.Models;

namespace DataAcquisition
{
    public class GuidCache
    {
        public static Queue<string> GuidQueue = new Queue<string>();

        private static int capacity = 3000;

        private static IConfigurationRoot config = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json", optional: true, reloadOnChange: true).Build();

        private static ISqlSugarClient db = new SqlSugarClient(new ConnectionConfig()
        {
            DbType = SqlSugar.DbType.PostgreSQL,
            ConnectionString = config.GetValue<string>("LocalDbConnectionString"),
            IsAutoCloseConnection = true
        });

        public static void GetGuidCache()
        {
            DateTime endtime = DateTime.Now;
            endtime = endtime.AddHours(-6);
            var QueryResult = db.Queryable<Lot2Lot3Model>().Where(x => x.create_time >= endtime).OrderBy(x => x.create_time).Select(it => it.lot_id).ToList();//返回guid字段
            if (QueryResult != null && QueryResult.Count != 0)
            {
                if (QueryResult.Count < capacity)
                {
                    GuidQueue = new Queue<string>(QueryResult);
                }
                else
                {
                    GuidQueue = new Queue<string>(QueryResult.GetRange(QueryResult.Count - capacity, capacity));
                }
            }
        }

        public static bool ContainVerification(string guid)
        {
            if (GuidQueue.Contains(guid))
            {
                return true;
            }
            else
            {
                return false;
            }
        }

        public static void Add(string guid)
        {
            if (GuidQueue.Count() >= capacity)
            {
                int i = GuidQueue.Count() - capacity + 1;
                for (; i > 0; i--)
                {
                    GuidQueue.Dequeue();
                }
            }
            GuidQueue.Enqueue(guid);
        }
    }
}