[英]Quartz.Net Dependency Injection .Net Core
In my project I have to use Quartz but I don't know what i do wrong.在我的项目中,我必须使用 Quartz,但我不知道我做错了什么。
JobFactory:工作工厂:
public class IoCJobFactory : IJobFactory
{
private readonly IServiceProvider _factory;
public IoCJobFactory(IServiceProvider factory)
{
_factory = factory;
}
public IJob NewJob(TriggerFiredBundle bundle, IScheduler scheduler)
{
return _factory.GetService(bundle.JobDetail.JobType) as IJob;
}
public void ReturnJob(IJob job)
{
var disposable = job as IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
}
QuartzExtensions:石英扩展:
public static class QuartzExtensions
{
public static void UseQuartz(this IApplicationBuilder app)
{
app.ApplicationServices.GetService<IScheduler>();
}
public static async void AddQuartz(this IServiceCollection services)
{
var props = new NameValueCollection
{
{"quartz.serializer.type", "json"}
};
var factory = new StdSchedulerFactory(props);
var scheduler = await factory.GetScheduler();
var jobFactory = new IoCJobFactory(services.BuildServiceProvider());
scheduler.JobFactory = jobFactory;
await scheduler.Start();
services.AddSingleton(scheduler);
}
}
And when I try run my Job (class have dependency injection) i always get Exception becouse:当我尝试运行我的工作(类有依赖注入)时,我总是得到异常,因为:
_factory.GetService(bundle.JobDetail.JobType) as IJob;
is always null.始终为空。
My class implement IJob
and in startup.cs I add:我的班级实现IJob
并在 startup.cs 中添加:
services.AddScoped<IJob, HelloJob>();
services.AddQuartz();
and和
app.UseQuartz();
I using standard .net Core dependency injection:我使用标准的 .net Core 依赖注入:
using Microsoft.Extensions.DependencyInjection;
This is just a simple sample of my solution to solve IoC problem:这只是我解决 IoC 问题的解决方案的一个简单示例:
JobFactory.cs作业工厂.cs
public class JobFactory : IJobFactory
{
protected readonly IServiceProvider Container;
public JobFactory(IServiceProvider container)
{
Container = container;
}
public IJob NewJob(TriggerFiredBundle bundle, IScheduler scheduler)
{
return Container.GetService(bundle.JobDetail.JobType) as IJob;
}
public void ReturnJob(IJob job)
{
(job as IDisposable)?.Dispose();
}
}
Startup.cs启动文件
public void Configure(IApplicationBuilder app,
IHostingEnvironment env,
ILoggerFactory loggerFactory,
IApplicationLifetime lifetime,
IServiceProvider container)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
app.UseMvc();
// the following 3 lines hook QuartzStartup into web host lifecycle
var quartz = new QuartzStartup(container);
lifetime.ApplicationStarted.Register(quartz.Start);
lifetime.ApplicationStopping.Register(quartz.Stop);
}
QuartzStartup.cs QuartzStartup.cs
public class QuartzStartup
{
private IScheduler _scheduler; // after Start, and until shutdown completes, references the scheduler object
private readonly IServiceProvider container;
public QuartzStartup(IServiceProvider container)
{
this.container = container;
}
// starts the scheduler, defines the jobs and the triggers
public void Start()
{
if (_scheduler != null)
{
throw new InvalidOperationException("Already started.");
}
var schedulerFactory = new StdSchedulerFactory();
_scheduler = schedulerFactory.GetScheduler().Result;
_scheduler.JobFactory = new JobFactory(container);
_scheduler.Start().Wait();
var voteJob = JobBuilder.Create<VoteJob>()
.Build();
var voteJobTrigger = TriggerBuilder.Create()
.StartNow()
.WithSimpleSchedule(s => s
.WithIntervalInSeconds(60)
.RepeatForever())
.Build();
_scheduler.ScheduleJob(voteJob, voteJobTrigger).Wait();
}
// initiates shutdown of the scheduler, and waits until jobs exit gracefully (within allotted timeout)
public void Stop()
{
if (_scheduler == null)
{
return;
}
// give running jobs 30 sec (for example) to stop gracefully
if (_scheduler.Shutdown(waitForJobsToComplete: true).Wait(30000))
{
_scheduler = null;
}
else
{
// jobs didn't exit in timely fashion - log a warning...
}
}
}
consider that you should register your service into the container (in my case VoteJob) in advance.考虑您应该提前将您的服务注册到容器中(在我的例子中是 VoteJob)。
I implement this based on this answer .我根据这个答案实现了这个。
I hope it can be helpful.我希望它会有所帮助。
I got the same issue.我遇到了同样的问题。
I update from我更新自
services.AddScoped<IJob, HelloJob>();
to到
services.AddScoped<HelloJob>();
then it works.那么它的工作原理。
_factory.GetService(bundle.JobDetail.JobType) as IJob;
will not be null :)不会为空 :)
This is how I did it in my application.这就是我在我的应用程序中所做的。 Instead of adding the Scheduler to the ioc I only add the factory我只添加工厂,而不是将调度程序添加到 ioc
services.AddTransient<IJobFactory, AspJobFactory>(
(provider) =>
{
return new AspJobFactory( provider );
} );
My job factory pretty much looks the same.我的工作工厂看起来几乎一样。 Transient does not really matter as I only use this once anyway.瞬态并不重要,因为无论如何我只使用一次。 My use Quartz extension method then is我使用 Quartz 扩展方法然后是
public static void UseQuartz(this IApplicationBuilder app, Action<Quartz> configuration)
{
// Job Factory through IOC container
var jobFactory = (IJobFactory)app.ApplicationServices.GetService( typeof( IJobFactory ) );
// Set job factory
Quartz.Instance.UseJobFactory( jobFactory );
// Run configuration
configuration.Invoke( Quartz.Instance );
// Run Quartz
Quartz.Start();
}
The Quartz
class is Singleton as well. Quartz
类也是 Singleton。
Quartz.NET 3.1 will include official support for Microsoft DI and ASP.NET Core Hosted Services. Quartz.NET 3.1 将包括对 Microsoft DI 和 ASP.NET Core 托管服务的官方支持。
You can find the revisited packages as:您可以找到重新访问的软件包:
The best resource the see the new DI integration in progress is to head to the example ASP.NET Core application .查看正在进行的新 DI 集成的最佳资源是前往示例 ASP.NET Core 应用程序。
https://www.quartz-scheduler.net/2020/07/08/quartznet-3-1-beta-1-released/ https://www.quartz-scheduler.net/2020/07/08/quartznet-3-1-beta-1-released/
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