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using Apewer.Web; using System; using System.Collections.Generic; using System.Reflection; using System.Text;
namespace Apewer {
/// <summary>Cron 特性,默认间隔为 60000 毫秒。</summary>
[AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = false)] public sealed class CronAttribute : Attribute {
internal const int DefaultInterval = 60000;
private int _interval;
/// <summary>两次 Cron 执行的间隔毫秒数。</summary>
public int Interval { get { return _interval; } }
/// <summary>创建 Cron 特性,可指定两次 Cron 执行的间隔毫秒数。</summary>
public CronAttribute(int interval = DefaultInterval) { _interval = interval; }
#region CronInvoker
private static Class<CronInvoker> _invoker = new Class<CronInvoker>();
/// <summary>开始 Cron 调用(不阻塞当前线程)。</summary>
/// <remarks>
/// 参数<br />
/// - assemblies: 包含 Cron 的程序集,不指定此参数时将在 AppDomain 中搜索;<br />
/// - logger: 日志记录程序,不指定此参数时将使用 Logger.Default。<br />
/// </remarks>
public static void Start(IEnumerable<Assembly> assemblies = null, Logger logger = null) { CronInvoker instance = null; lock (_invoker) { if (_invoker) return; instance = new CronInvoker(); _invoker.Value = instance; } instance.Logger = logger ?? Logger.Default; instance.Load(assemblies ?? AppDomain.CurrentDomain.GetAssemblies());
Console.CancelKeyPress += (s, e) => { Break(); e.Cancel = true; }; instance.Start(); }
/// <summary>在当前线程开始 Cron 调用(阻塞当前线程)。</summary>
/// <remarks>
/// 参数<br />
/// - assemblies: 包含 Cron 的程序集,不指定此参数时将在 AppDomain 中搜索;<br />
/// - logger: 日志记录程序,不指定此参数时将使用 Logger.Default。<br />
/// </remarks>
public static void Start(Logger logger, IEnumerable<Assembly> assemblies = null) => Start(assemblies, logger);
/// <summary>打断 Cron 循环,不打断正在执行的 Cron。</summary>
public static void Break() { lock (_invoker) { if (!_invoker) return; _invoker.Value.Break(); } }
#endregion
}
}
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