258 lines
10 KiB
C#
258 lines
10 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text.Json;
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using System.Threading;
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using System.Threading.Tasks;
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using DOAN.Infrastructure.PLC;
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using DOAN.Model.PBL;
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using DOAN.ServiceCore.Signalr;
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using Microsoft.AspNetCore.SignalR;
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using Microsoft.Extensions.Hosting;
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using SqlSugar.IOC;
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namespace DOAN.ServiceCore
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{
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/// <summary>
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/// 永驻线程
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/// 功能：检测传感器信号，判断箱子数
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/// </summary>
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public class DoanBackgroundService : IHostedService, IDisposable
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{
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private readonly IHubContext<PBLhub> notificationHubContext;
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private readonly CancellationTokenSource _cancellationTokenSource = new CancellationTokenSource();
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private Task _executingTask;
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private PLCTool pLCTool;
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private List<Storagelocation> storagelocationList = new List<Storagelocation>();
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private List<PlcAddressTable> pointPositionList = new List<PlcAddressTable>();
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private Timer refreshTimer;
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public DoanBackgroundService(IHubContext<PBLhub> hubContext)
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{
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notificationHubContext = hubContext;
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}
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public Task StartAsync(CancellationToken cancellationToken)
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{
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pLCTool = new PLCTool();
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pLCTool.ConnectPLC();
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// 初始化料架层和点位表数据
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RefreshData(null);
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// 启动后台任务
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_executingTask = ExecuteAsync(_cancellationTokenSource.Token);
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// 设置定时器每分钟刷新一次料架层和点位表
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refreshTimer = new Timer(RefreshData, null, TimeSpan.Zero, TimeSpan.FromMinutes(1));
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return _executingTask.IsCompleted ? _executingTask : Task.CompletedTask;
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}
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public async Task StopAsync(CancellationToken cancellationToken)
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{
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// 请求取消后台任务
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_cancellationTokenSource.Cancel();
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// 停止定时器
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refreshTimer?.Change(Timeout.Infinite, Timeout.Infinite);
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refreshTimer?.Dispose();
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// 等待后台任务完成
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await Task.WhenAny(_executingTask, Task.Delay(Timeout.Infinite, cancellationToken));
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}
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private static bool GetInvertedBit(byte b, int position)
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{
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if (position < 0 || position > 7)
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{
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throw new ArgumentOutOfRangeException(nameof(position), "Position must be between 0 and 7.");
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}
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byte mask = (byte)(1 << position);
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bool isSet = (b & mask) != 0;
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return !isSet; // 返回取反后的值
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}
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/// <summary>
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/// 功能：检测传感器信号，判断箱子数并更新库存及日志
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/// </summary>
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/// <param name="stoppingToken">取消令牌</param>
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/// <returns></returns>
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private async Task ExecuteAsync(CancellationToken stoppingToken)
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{
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try
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{
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while (!stoppingToken.IsCancellationRequested)
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{
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// 读取PLC I/O状态（12个字节）
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byte[] plcSensorValues;
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try
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{
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plcSensorValues = pLCTool.ReadAllValue("VB100", 12);
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}
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catch (Exception ex)
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{
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Console.WriteLine($"读取PLC数据异常: {ex.Message}\n堆栈跟踪: {ex.StackTrace}");
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continue;
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}
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var updateStoragelocationList = new List<Storagelocation>();
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var inventoryLogs = new List<Inventorylog>();
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foreach (var layerItem in storagelocationList)
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{
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// 获取这个料架层的点位表
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var layerPoints = pointPositionList.Where(it => it.FkStorageId == layerItem.Id).ToList();
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if (layerPoints.Any())
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{
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int currentPackageCount = 0; // 默认最小值为0
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foreach (var point in layerPoints)
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{
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int row = point.ByteNum - 100;
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int col = point.BitNum - 1;
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if (plcSensorValues != null && row >= 0 && row < plcSensorValues.Length)
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{
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currentPackageCount += GetInvertedBit(plcSensorValues[row], col) ? 1 : 0;
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}
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}
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// 检查箱子数量变化并记录日志
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int previousPackageCount = layerItem.PackageNum.GetValueOrDefault();
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if (currentPackageCount > previousPackageCount)
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{
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UpdateAndLog(layerItem, currentPackageCount, 2, "出库", inventoryLogs);
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updateStoragelocationList.Add(layerItem);
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}
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else if (currentPackageCount < previousPackageCount)
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{
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UpdateAndLog(layerItem, currentPackageCount, 1, "入库", inventoryLogs);
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updateStoragelocationList.Add(layerItem);
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}
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// 补料报警触发
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if (layerItem.IsLackAlarm == 1 && currentPackageCount <= layerItem.AlarmNum.GetValueOrDefault())
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{
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var alarmData = new
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{
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RackCode = layerItem.RackCode,
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LayerNum = layerItem.LayerNum,
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CurrentPackageCount = currentPackageCount,
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AlarmThreshold = layerItem.AlarmNum
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};
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string alarmMessage = System.Text.Json.JsonSerializer.Serialize(alarmData);
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await notificationHubContext.Clients.All.SendAsync("PBL_lack_alarm", alarmMessage);
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}
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}
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}
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// 更新库存
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if (updateStoragelocationList.Any())
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{
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await DbScoped.SugarScope.CopyNew().Updateable(updateStoragelocationList).ExecuteCommandAsync();
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}
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// 插入库存变更日志
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if (inventoryLogs.Any())
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{
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await DbScoped.SugarScope.CopyNew().Insertable(inventoryLogs).ExecuteCommandAsync();
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}
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// 发送Socket通知
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string changeMessage = "库存变动";
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await notificationHubContext.Clients.All.SendAsync("PBL_storagelocation_change", changeMessage);
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// 添加延迟以避免频繁查询
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await Task.Delay(200, stoppingToken);
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}
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}
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catch (OperationCanceledException)
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{
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Console.WriteLine("任务已取消");
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}
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catch (Exception ex)
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{
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Console.WriteLine($"DoanBackGround线程ExecuteAsync异常: {ex.Message}\n堆栈跟踪: {ex.StackTrace}");
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}
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}
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/// <summary>
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/// 刷新料架层和点位表数据
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/// </summary>
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/// <param name="state"></param>
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private void RefreshData(object state)
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{
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try
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{
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using (var scope = DbScoped.SugarScope.CopyNew())
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{
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storagelocationList = scope.Queryable<Storagelocation>().ToListAsync().Result;
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pointPositionList = scope.Queryable<PlcAddressTable>().ToListAsync().Result;
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine($"刷新数据异常: {ex.Message}\n堆栈跟踪: {ex.StackTrace}");
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// 如果刷新失败，保持现有数据不变
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}
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}
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/// <summary>
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/// 更新料架位置的箱子数量并记录库存日志
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/// </summary>
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/// <param name="storageLocation">料架位置对象</param>
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/// <param name="newPackageCount">新的箱子数量</param>
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/// <param name="operation">操作类型 (1-出库, 2-入库)</param>
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/// <param name="operatorName">操作员名称</param>
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/// <param name="inventoryLogs">库存日志列表</param>
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private void UpdateAndLog(
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Storagelocation storageLocation,
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int newPackageCount,
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int operation,
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string operatorName,
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List<Inventorylog> inventoryLogs)
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{
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storageLocation.PackageNum = newPackageCount;
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storageLocation.UpdatedBy = operatorName;
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storageLocation.UpdatedTime = DateTime.Now;
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var inventoryLog = new Inventorylog
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{
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Id = SnowFlakeSingle.Instance.NextId().ToString(),
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RackCode = storageLocation.RackCode,
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Partnumber = storageLocation.Partnumber,
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Operation = operation,
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PackageNum = Math.Abs(newPackageCount - storageLocation.PackageNum.GetValueOrDefault()),
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CreatedBy = operatorName,
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CreatedTime = DateTime.Now.ToLocalTime()
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};
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inventoryLogs.Add(inventoryLog);
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}
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public void Dispose()
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{
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try
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{
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pLCTool.ConnectClose();
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_cancellationTokenSource.Cancel();
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_executingTask?.Wait();
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_cancellationTokenSource.Dispose();
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refreshTimer?.Change(Timeout.Infinite, Timeout.Infinite);
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refreshTimer?.Dispose();
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}
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catch (Exception ex)
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{
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Console.WriteLine("DoanBackGround线程Dispose异常:" + ex.Message);
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}
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}
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}
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}
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