基于Quartz.Net通过反射进行任务调度

通过反射加载任务调度

需求：

1. 因为有些任务需要进行各种定时操作，因此将 Quartz.Net 简单封装了一下使用；
2. 希望通过上传 dll 来进行每个任务的调度，所以写了个反射调度示例；

Program.cs

using Serilog;
using Serilog.Core;
using Quartz;
using System.Reflection;

_net.SimpleScheduler scheduler = _net.SimpleScheduler.Create();
List<IWorkItem> workItems = GetWorkItems();
foreach (var item in workItems)
{
    scheduler.AddJob(item);
}
scheduler.Start();
Console.ReadLine();

static List<IWorkItem> GetWorkItems()
{
    var assembly = Assembly.GetExecutingAssembly();

    List<IWorkItem> workItems = new List<IWorkItem>();
    foreach (var item in assembly.ExportedTypes)
    {
        Type? type = item.GetInterface(nameof(IWorkItem));

        if (type != null && type.Name.Equals(nameof(IWorkItem)))
        {
            ConstructorInfo? constructorInfo = item.GetConstructor(BindingFlags.Public | BindingFlags.Instance, Type.EmptyTypes);
            var workItem = constructorInfo?.Invoke(Array.Empty<object>()) as IWorkItem;

            workItems.Add(item: workItem!);
        }
    }
    return workItems;
}

public interface IWorkItem : IJob
{
    ITrigger Trigger { get; set; }

    IJobDetail JobDetail { get; set; }

    JobKey JobKey { get; set; }
}

public class MyWork : IWorkItem
{
    public ITrigger Trigger { get; set; }
    public IJobDetail JobDetail { get; set; }
    public JobKey JobKey { get; set; }

    private static Logger? _log = new LoggerConfiguration()
        .WriteTo.Console()
        .CreateLogger();

    public MyWork()
    {
        Trigger = TriggerBuilder.Create().WithDailyTimeIntervalSchedule(d => d.WithIntervalInSeconds(3)).StartNow().WithIdentity("trigger", "test").Build();
        JobDetail = JobBuilder.Create(this.GetType()).WithIdentity("jobDetail", "test").Build();
        JobKey = JobDetail.Key;
    }

    public Task Execute(IJobExecutionContext context)
    {
        _log.Information("MyJob current date {A}", DateTime.Now.ToLongTimeString());
        return Task.CompletedTask;
    }
}

---

SimpleScheduler.cs

namespace _net
{
    /// <summary>
    /// 基于 Quartz.Net 简单的封装
    /// </summary>
    public class SimpleScheduler
    {
        private Quartz.ISchedulerFactory _schedulerFactory;
        private Quartz.IScheduler _scheduler;

        public SimpleScheduler()
        {
            _schedulerFactory = new Quartz.Impl.StdSchedulerFactory();
            _scheduler = _schedulerFactory.GetScheduler().ConfigureAwait(false).GetAwaiter().GetResult();
        }

        public static SimpleScheduler Create()
        {
            return new SimpleScheduler();
        }

        public SimpleScheduler AddJob(IWorkItem workItem)
        {
            _scheduler.ScheduleJob(workItem.JobDetail, workItem.Trigger);
            return this;
        }

        public void Start()
        {
            _scheduler.Start();
        }

        public void Shutdown()
        {
            if (_scheduler != null)
            {
                _scheduler.Shutdown();
            }
        }
    }
}