DW5S/DW5S.App/FindRef/TaskRefCache.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using DW5S.DTO;
using DW5S.Entity;

namespace DW5S.App
{
    /// <summary>
    /// 任务参考信号缓存
    /// </summary>
    public class TaskRefCache
    {
        public static TaskRefCache Instance { get; private set; } = new TaskRefCache();
        /// <summary>
        /// 缓存参考信号信息
        /// </summary>
        private Dictionary<int, List<TaskCgDto>> _cahceRefs = new Dictionary<int, List<TaskCgDto>>();

        public void AddRange(int taskId, List<TaskCgDto> cgItems)
        {
            lock (this)
            {
                if (!_cahceRefs.ContainsKey(taskId))
                    _cahceRefs[taskId] = new List<TaskCgDto>();
                _cahceRefs[taskId].AddRange(cgItems);
            }
        }

        public void ClearCache(int taskID)
        {
            lock (this)
            {
                if (_cahceRefs.ContainsKey(taskID))
                {
                    _cahceRefs.Remove(taskID);
                }
            }
        }
        /// <summary>
        /// 获取相同任务时间内的参考信号
        /// </summary>
        /// <param name="taskID"></param>
        /// <param name="start">开始时间</param>
        /// <param name="end">结束时间</param>
        /// <returns></returns>
        public List<TaskCgDto> GetTaskRef(int taskID, DateTime start, DateTime end)
        {
            lock (this)
            {
                if (_cahceRefs.ContainsKey(taskID))
                {
                    var filterRefs = _cahceRefs[taskID].Where(r => r.SigTime >= start && r.SigTime <= end).ToList();
                    return filterRefs;
                }
                else
                {
                    return new List<TaskCgDto>();
                }
            }
        }
        /// <summary>
        /// 清理过期参考信号
        /// </summary>
        /// <param name="taskID"></param>
        /// <returns></returns>
        public void ClearExpireRef(int taskID)
        {
            lock (this)
            {
                if (_cahceRefs.ContainsKey(taskID))
                {
                    var maxtime = _cahceRefs[taskID].Max(m => m.SigTime);
                    var mintime = maxtime.AddHours(-1);//清理一个小时的参考信号
                    _cahceRefs[taskID].RemoveAll(r => r.SigTime <= mintime);
                }
              
            }
        }

      
        public void ClearAll()
        {
            lock (this)
            {
                _cahceRefs.Clear();
            }
        }
    }
}