初步完成S7后台服务的改造
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323
DMS.Infrastructure/Services/S7ServiceManager.cs
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323
DMS.Infrastructure/Services/S7ServiceManager.cs
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using DMS.Application.DTOs;
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using DMS.Application.Interfaces;
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using DMS.Core.Enums;
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using DMS.Infrastructure.Interfaces.Services;
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using Microsoft.Extensions.Logging;
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namespace DMS.Infrastructure.Services
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{
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/// <summary>
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/// S7服务管理器，负责管理S7连接和变量监控
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/// </summary>
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public class S7ServiceManager : IS7ServiceManager
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{
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private readonly ILogger<S7ServiceManager> _logger;
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private readonly IDataProcessingService _dataProcessingService;
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private readonly IDataCenterService _dataCenterService;
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private readonly IS7ServiceFactory _s7ServiceFactory;
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private readonly ConcurrentDictionary<int, S7DeviceContext> _deviceContexts;
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private readonly SemaphoreSlim _semaphore;
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private bool _disposed = false;
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public S7ServiceManager(
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ILogger<S7ServiceManager> logger,
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IDataProcessingService dataProcessingService,
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IDataCenterService dataCenterService,
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IS7ServiceFactory s7ServiceFactory)
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{
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_logger = logger ?? throw new ArgumentNullException(nameof(logger));
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_dataProcessingService = dataProcessingService ?? throw new ArgumentNullException(nameof(dataProcessingService));
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_dataCenterService = dataCenterService ?? throw new ArgumentNullException(nameof(dataCenterService));
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_s7ServiceFactory = s7ServiceFactory ?? throw new ArgumentNullException(nameof(s7ServiceFactory));
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_deviceContexts = new ConcurrentDictionary<int, S7DeviceContext>();
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_semaphore = new SemaphoreSlim(10, 10); // 默认最大并发连接数为10
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}
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/// <summary>
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/// 初始化服务管理器
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/// </summary>
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public async Task InitializeAsync(CancellationToken cancellationToken = default)
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{
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_logger.LogInformation("S7服务管理器正在初始化...");
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// 初始化逻辑可以在需要时添加
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_logger.LogInformation("S7服务管理器初始化完成");
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}
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/// <summary>
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/// 添加设备到监控列表
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/// </summary>
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public void AddDevice(DeviceDto device)
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{
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if (device == null)
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throw new ArgumentNullException(nameof(device));
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if (device.Protocol != ProtocolType.S7)
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{
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_logger.LogWarning("设备 {DeviceId} 不是S7协议，跳过添加", device.Id);
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return;
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}
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var context = new S7DeviceContext
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{
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Device = device,
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S7Service = _s7ServiceFactory.CreateService(),
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Variables = new ConcurrentDictionary<string, VariableDto>(),
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IsConnected = false
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};
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_deviceContexts.AddOrUpdate(device.Id, context, (key, oldValue) => context);
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_logger.LogInformation("已添加设备 {DeviceId} 到监控列表", device.Id);
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}
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/// <summary>
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/// 移除设备监控
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/// </summary>
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public async Task RemoveDeviceAsync(int deviceId, CancellationToken cancellationToken = default)
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{
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if (_deviceContexts.TryRemove(deviceId, out var context))
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{
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await DisconnectDeviceAsync(context, cancellationToken);
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_logger.LogInformation("已移除设备 {DeviceId} 的监控", deviceId);
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}
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}
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/// <summary>
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/// 更新设备变量
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/// </summary>
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public void UpdateVariables(int deviceId, List<VariableDto> variables)
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{
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if (_deviceContexts.TryGetValue(deviceId, out var context))
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{
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context.Variables.Clear();
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foreach (var variable in variables)
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{
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context.Variables.AddOrUpdate(variable.S7Address, variable, (key, oldValue) => variable);
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}
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_logger.LogInformation("已更新设备 {DeviceId} 的变量列表，共 {Count} 个变量", deviceId, variables.Count);
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}
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}
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/// <summary>
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/// 获取设备连接状态
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/// </summary>
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public bool IsDeviceConnected(int deviceId)
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{
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return _deviceContexts.TryGetValue(deviceId, out var context) && context.IsConnected;
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}
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/// <summary>
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/// 重新连接设备
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/// </summary>
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public async Task ReconnectDeviceAsync(int deviceId, CancellationToken cancellationToken = default)
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{
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if (_deviceContexts.TryGetValue(deviceId, out var context))
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{
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await DisconnectDeviceAsync(context, cancellationToken);
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await ConnectDeviceAsync(context, cancellationToken);
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}
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}
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/// <summary>
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/// 获取所有监控的设备ID
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/// </summary>
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public IEnumerable<int> GetMonitoredDeviceIds()
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{
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return _deviceContexts.Keys.ToList();
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}
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/// <summary>
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/// 连接设备
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/// </summary>
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public async Task ConnectDeviceAsync(S7DeviceContext context, CancellationToken cancellationToken = default)
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{
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if (context == null)
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return;
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await _semaphore.WaitAsync(cancellationToken);
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try
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{
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_logger.LogInformation("正在连接设备 {DeviceName} ({IpAddress}:{Port})",
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context.Device.Name, context.Device.IpAddress, context.Device.Port);
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var stopwatch = Stopwatch.StartNew();
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// 设置连接超时
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using var timeoutToken = new CancellationTokenSource(5000); // 5秒超时
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using var linkedToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, timeoutToken.Token);
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var cpuType = ConvertCpuType(context.Device.CpuType);
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await context.S7Service.ConnectAsync(
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context.Device.IpAddress,
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context.Device.Port,
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(short)context.Device.Rack,
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(short)context.Device.Slot,
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cpuType);
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stopwatch.Stop();
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_logger.LogInformation("设备 {DeviceName} 连接耗时 {ElapsedMs} ms",
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context.Device.Name, stopwatch.ElapsedMilliseconds);
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if (context.S7Service.IsConnected)
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{
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context.IsConnected = true;
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_logger.LogInformation("设备 {DeviceName} 连接成功", context.Device.Name);
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}
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else
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{
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_logger.LogWarning("设备 {DeviceName} 连接失败", context.Device.Name);
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}
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "连接设备 {DeviceName} 时发生错误: {ErrorMessage}",
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context.Device.Name, ex.Message);
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context.IsConnected = false;
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}
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finally
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{
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_semaphore.Release();
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}
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}
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/// <summary>
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/// 断开设备连接
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/// </summary>
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private async Task DisconnectDeviceAsync(S7DeviceContext context, CancellationToken cancellationToken = default)
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{
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if (context == null)
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return;
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try
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{
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_logger.LogInformation("正在断开设备 {DeviceName} 的连接", context.Device.Name);
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await context.S7Service.DisconnectAsync();
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context.IsConnected = false;
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_logger.LogInformation("设备 {DeviceName} 连接已断开", context.Device.Name);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "断开设备 {DeviceName} 连接时发生错误: {ErrorMessage}",
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context.Device.Name, ex.Message);
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}
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}
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/// <summary>
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/// 将字符串形式的CPU类型转换为S7.Net.CpuType枚举
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/// </summary>
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private S7.Net.CpuType ConvertCpuType(CpuType cpuType)
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{
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return cpuType switch
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{
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CpuType.S7200 => S7.Net.CpuType.S7200,
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CpuType.S7300 => S7.Net.CpuType.S7300,
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CpuType.S7400 => S7.Net.CpuType.S7400,
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CpuType.S71200 => S7.Net.CpuType.S71200,
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CpuType.S71500 => S7.Net.CpuType.S71500,
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_ => S7.Net.CpuType.S71200 // 默认值
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};
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}
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/// <summary>
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/// 连接指定设备
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/// </summary>
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public async Task ConnectDeviceAsync(int deviceId, CancellationToken cancellationToken = default)
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{
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if (_deviceContexts.TryGetValue(deviceId, out var context))
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{
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await ConnectDeviceAsync(context, cancellationToken);
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}
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}
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/// <summary>
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/// 批量连接设备
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/// </summary>
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public async Task ConnectDevicesAsync(IEnumerable<int> deviceIds, CancellationToken cancellationToken = default)
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{
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var connectTasks = new List<Task>();
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foreach (var deviceId in deviceIds)
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{
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if (_deviceContexts.TryGetValue(deviceId, out var context))
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{
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connectTasks.Add(ConnectDeviceAsync(context, cancellationToken));
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}
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}
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await Task.WhenAll(connectTasks);
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}
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/// <summary>
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/// 断开指定设备连接
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/// </summary>
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public async Task DisconnectDeviceAsync(int deviceId, CancellationToken cancellationToken = default)
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{
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if (_deviceContexts.TryGetValue(deviceId, out var context))
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{
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await DisconnectDeviceAsync(context, cancellationToken);
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}
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}
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/// <summary>
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/// 批量断开设备连接
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/// </summary>
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public async Task DisconnectDevicesAsync(IEnumerable<int> deviceIds, CancellationToken cancellationToken = default)
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{
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var disconnectTasks = new List<Task>();
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foreach (var deviceId in deviceIds)
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{
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disconnectTasks.Add(DisconnectDeviceAsync(deviceId, cancellationToken));
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}
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await Task.WhenAll(disconnectTasks);
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}
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/// <summary>
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/// 释放资源
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/// </summary>
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public void Dispose()
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{
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Dispose(true);
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GC.SuppressFinalize(this);
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}
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/// <summary>
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/// 释放资源
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/// </summary>
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protected virtual void Dispose(bool disposing)
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{
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if (!_disposed && disposing)
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{
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_logger.LogInformation("正在释放S7服务管理器资源...");
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// 断开所有设备连接
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var deviceIds = _deviceContexts.Keys.ToList();
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DisconnectDevicesAsync(deviceIds).Wait(TimeSpan.FromSeconds(10));
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// 释放其他资源
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_semaphore?.Dispose();
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_disposed = true;
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_logger.LogInformation("S7服务管理器资源已释放");
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}
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}
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}
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/// <summary>
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/// S7设备上下文
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/// </summary>
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public class S7DeviceContext
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{
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public DeviceDto Device { get; set; }
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public IS7Service S7Service { get; set; }
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public ConcurrentDictionary<string, VariableDto> Variables { get; set; }
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public bool IsConnected { get; set; }
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}
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}
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