Quartz.Net系列（三）：解读Quartz.Net源码领略设计模式在其中的应用

1.Builder（建造者）模式

JobBuilder

 DateBuilder

 其他的Builder（TriggerBuilder、SchedulerBuilder等）

2.抽象工厂模式

ISchedulerFactory

DirectSchedulerFactory StdSchedulerFactory

IScheduler

StdScheduler RemoteScheduler[proxy]

3.IOC模式、可插拔式设计

//如果你没有自定义的loadHelper，那么就使用SimpleTypeLoadHelper
loadHelper = ObjectUtils.InstantiateType<ITypeLoadHelper>(typeLoadHelperType ?? typeof(SimpleTypeLoadHelper));

4.AOP模式[切面编程]

scheduler.ListenerManager.AddJobListener(new CustomJobListener(),GroupMatcher<JobKey>.AnyGroup());

public class CustomJobListener : IJobListener
{
    public string Name => "CustomJobListener";

    /// <summary>
    /// 执行否决
    /// </summary>
    /// <param name="context"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    public async Task JobExecutionVetoed(IJobExecutionContext context, CancellationToken cancellationToken = default)
    {
        await Task.Factory.StartNew(() =>
        {
            Console.WriteLine("JobExecutionVetoed");
        });

    }
    /// <summary>
    /// 待执行
    /// </summary>
    /// <param name="context"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    public async Task JobToBeExecuted(IJobExecutionContext context, CancellationToken cancellationToken = default)
    {
        await Task.Factory.StartNew(() =>
        {
            Console.WriteLine("JobToBeExecuted");
        });
    }

    /// <summary>
    /// 已执行
    /// </summary>
    /// <param name="context"></param>
    /// <param name="jobException"></param>
    /// <param name="cancellationToken"></param>
    /// <returns></returns>
    public async Task JobWasExecuted(IJobExecutionContext context, JobExecutionException jobException, CancellationToken cancellationToken = default)
    {
        await Task.Factory.StartNew(() =>
        {
            Console.WriteLine("JobWasExecuted");
        });
    }
}