Help in understanding time when background job runs! #8573 | Support Center

ajayak created 4 years ago

Hi,

Background job has Timer.Period property which controls when to run the job. But also I have hangfire connected which has its own way of running jobs via CRON expression.

Here is an example:

// At 1:50 of every 7th day
RecurringJob.AddOrUpdate<ShipmentAddressLocationCoordinatesWorker>(job => job.Start(), "50 1 * * 0", TimeZoneInfo.Utc);

inside the ShipmentAddressLocationCoordinatesWorker constuctor:

Timer.Period = 1000 * 60 * 60 * 24 * 7; // 7 Days

The problem is, I have no idea when the job's DoWork function will be executed! I checked the logs and saw that this job never executed. Can someone help me on understanding how to correctly use Timer.Period property? :)

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9 Answer(s)

0

maliming created 4 years ago
Support Team

hi

I think you are talking about Background Worker.

It has nothing to do with hangfire.

see https://aspnetboilerplate.com/Pages/Documents/Background-Jobs-And-Workers#background-workers
0

ajayak created 4 years ago

Hi @maliming,

I'm little confused here. Aren't the background jobs handled by hangfire when abp hangfire package is added?
0

maliming created 4 years ago
Support Team

hangfire works for background jobs, but the Timer.Period you mentioned belongs to the background worker. It has nothing to do with hangfire.
0

ajayak created 4 years ago

In the example I posted above, can you provide information on when the DoWork function will be executed in ShipmentAddressLocationCoordinatesWorker? :)

At 1:50 of every 7th day ?
0

maliming created 4 years ago
Support Team

You are calling hangfire's api. RecurringJob has nothing to do with Abp.

BobIngham created 4 years ago

@ajayak When you use Hangfire it's initialised in your Startup and instantiated in your WebCoreModule, which you probably already know:

if (WebConsts.HangfireDashboardEnabled)
{
    //Hangfire(Enable to use Hangfire instead of default job manager)
    services.AddHangfire(config =>
    {
        config.UseSqlServerStorage(_appConfiguration.GetConnectionString("Default"));
        HangfireService.InitializeJobs();
    });
}

Your HangfireService class triggers jobs using standard CRON scheduling:

public class HangfireService
{
    public static void InitializeJobs()
    {
        RecurringJob.AddOrUpdate<UpdateFromDataProvider>(job => job.Execute(0), "30 * * * *");
        return;
    }
}

Zero's background jobs work a little differently. They are instantiated into your WebHostModule:

if (IocManager.Resolve<IMultiTenancyConfig>().IsEnabled)
{
    var workManager = IocManager.Resolve<IBackgroundWorkerManager>();
    workManager.Add(IocManager.Resolve<SubscriptionExpirationCheckWorker>());
    workManager.Add(IocManager.Resolve<SubscriptionExpireEmailNotifierWorker>());
}

And the timing is declared at the top of the Worker class:

namespace Nuagecare.MultiTenancy
{
    public class SubscriptionExpirationCheckWorker : PeriodicBackgroundWorkerBase, ISingletonDependency
    {
        private const int CheckPeriodAsMilliseconds = 1 * 60 * 60 * 1000; //1 hour

Hope that helps. Zero's background workers and Hangfire workers can work, it's not one or the other, it can be both.

ajayak created 4 years ago

Hi @bobingham,

Here is my code for job:

public class ShipmentAddressLocationCoordinatesWorker : PeriodicBackgroundWorkerBase, ISingletonDependency
{
    public ShipmentAddressLocationCoordinatesWorker(AbpTimer timer) : base(timer)
    {
        Timer.Period = 1000 * 60 * 60 * 24 * 7; // 7 Days
    }

    [UnitOfWork]
    protected override void DoWork()
    {
        // My Code
    }
}

and I initialize this with Hangfire as:

// At 1:50 of every 7th day
 RecurringJob.AddOrUpdate<ShipmentAddressLocationCoordinatesWorker>(job => job.Start(), "50 1 * * 0", TimeZoneInfo.Utc);

This is also added in ApplicationModule's PostInitialize function

workManager.Add(IocManager.Resolve<ShipmentAddressLocationCoordinatesWorker>());

Am I doing something wrong here? Having 2 expressions for timer is really confusing. Can it be simplified?

BobIngham created 4 years ago

Hi @ajayak, If you're happy working with Hangfire then stick with Hangfire only. Invoke Hangfire in your WebCoreModule as above. Place your job in the HangfireService:

public class HangfireService
{
    public static void InitializeJobs()
    {
        RecurringJob.AddOrUpdate<ShipmentAddressLocationCoordinatesWorker>(job => job.Execute(0), "50 1 * * 0");
        return;
    }
}

Then your worker looks something like below. You are trying to run an abp background worker by firing it from Hangfire.

namespace Nuagecare.Web.Hangfire.Workers
{
    public class UpdateFromDataProvider : BackgroundJob<int>, ITransientDependency
    {
        public IAbpSession _abpSession;
        private readonly IRepository<Tenant> _tenantRepository;
        private readonly DataProviderAPIProvider _dataProviderAPIProvider;


        public UpdateFromDataProvider(
            IAbpSession abpSession,
            IRepository<Tenant> tenantRepository,
            DataProviderAPIProvider dataProviderAPIProvider)
        {
            _abpSession = abpSession;
            _tenantRepository = tenantRepository;
            _dataProviderAPIProvider = dataProviderAPIProvider;
        }

        [DisableConcurrentExecution(timeoutInSeconds: 10 * 60)]
        [AutomaticRetry(Attempts = 0)]
        public override void Execute(int number)
        {
            var env = AppDomain.CurrentDomain.GetData("HostingEnvironment") as IHostingEnvironment;
            ... code removed for brevity

Hopefully that shuold be a little clearer. Here's how it looks in VS. Probably the guys at Zero will tell me I have everything wrong!!!! This has been up and working in an Azure production site for over a year and never fails.

0

ajayak created 4 years ago

Thanks :)

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