101 lines
3.2 KiB
C#
101 lines
3.2 KiB
C#
using Microsoft.Extensions.Hosting;
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using Nirvana.Common;
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using System;
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using System.Collections.Generic;
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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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namespace YBDevice.NApi
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{
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/// <summary>
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/// 后台任务
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/// </summary>
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public class BackManagerService : BackgroundService
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{
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BackManagerOptions options = new BackManagerOptions();
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public BackManagerService(Action<BackManagerOptions> options)
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{
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options.Invoke(this.options);
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}
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protected override async Task ExecuteAsync(CancellationToken stoppingToken)
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{
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if (Configs.GetBoolValue("IsTask"))
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{
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// 延迟启动
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await Task.Delay(this.options.CheckTime, stoppingToken);
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options.OnHandler(0, $"正在启动托管服务 [{this.options.Name}]....");
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stoppingToken.Register(() =>
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{
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options.OnHandler(1, $"托管服务 [{this.options.Name}] 已经停止");
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});
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while (!stoppingToken.IsCancellationRequested)
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{
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try
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{
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options?.Callback();
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}
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catch (Exception ex)
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{
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options.OnHandler(2, $" [{this.options.Name}] 执行托管服务出错", ex);
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}
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await Task.Delay(this.options.CheckTime, stoppingToken);
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}
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}
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}
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public override Task StopAsync(CancellationToken cancellationToken)
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{
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options.OnHandler(3, $" [{this.options.Name}] 由于进程退出，正在执行清理工作");
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return base.StopAsync(cancellationToken);
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}
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}
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public class BackManagerOptions
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{
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/// <summary>
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/// 任务名称
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/// </summary>
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public string Name { get; set; }
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/// <summary>
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/// 获取或者设置检查时间间隔，单位：毫秒，默认 5 秒
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/// </summary>
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public int CheckTime { get; set; } = 5 * 1000;
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/// <summary>
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/// 回调委托
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/// </summary>
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public Action Callback { get; set; }
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/// <summary>
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/// 执行细节传递委托
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/// </summary>
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public Action<BackHandler> Handler { get; set; }
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/// <summary>
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/// 传递内部信息到外部组件中，以方便处理扩展业务
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/// </summary>
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/// <param name="level">0=Info，1=Debug，2=Error,3=exit</param>
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/// <param name="message"></param>
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/// <param name="ex"></param>
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/// <param name="state"></param>
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public void OnHandler(int level, string message, Exception ex = null, object state = null)
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{
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Handler?.Invoke(new BackHandler() { Level = level, Message = message, Exception = ex, State = state });
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}
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}
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public class BackHandler
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{
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/// <summary>
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/// 0=Info，1=Debug，2=Error
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/// </summary>
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public int Level { get; set; }
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public string Message { get; set; }
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public Exception Exception { get; set; }
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public object State { get; set; }
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}
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}
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