使用Hangfire for ASP.NET Core的触发器控制器方法

Question

Good day guys,

I'm trying to trigger a certain command inside my Controller in ASP.NET Core.

I've installed hangfire and configured my Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    ...
    services.AddHangfire(x => x.UseSqlServerStorage('my conn string'));
    ...
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    ...
    // add hangfire
    app.UseHangfireDashboard();
    app.UseHangfireServer();    
    ...
}

But the problem is, my sample controller has multiple dependency injections

public class ProductsController: Controller
{
    private readonly ISomething1 something1;
    private readonly ISomething2 something2;
    private readonly ISomething3 something3;

    public ProductsController(ISomething1 something1, ISomething2 something2, ISomething3 something3){
        this.something1 = something1;
        this.something2 = something2;
        this.something3 = something3;
    }

    public async Task<IActionResult> TriggerMe(){
        ...
    }
}

I'm trying to implement something like this on my startup

RecurringJob.AddOrUpdate(
() => // trigger the TriggerMe() controller method ,
Cron.Daily);

Any help please? Thank you

Answer 1

UPDATE
As the Rotavita is tightly coupled with controllers,views etc. I'd recommend solving this problem in two steps

1. Generate HTML from a view (for reporting/email purposes separate out that view from normal ones) using RazorEngine , you'd only need the view/template path and the model (containing values to be rendered)
2. Use the HTML to generate a PDF using wkhtmltopdf ( Rotavita uses this lib under the hood)

Original

As invoking a controller instance is a process done by the framework and it shouldn't be invoked or called by cron jobs.
For your problem, you just need to add the reference to the method or delegate. Assuming that you're going to move your code to some other class.

var instance=new Foo();
RecurringJob.AddOrUpdate(() => instance.DoSomething,Cron.Daily);

and the Foo class

public class Foo
{
    public void DoSomething()
    {
    //your code
    }
}