CODEWITHSUNDEEP
c#.net-core
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Reputation: 5624

Pass configuration to IHostedService

I'm trying to add a configuration value to an IHostedService but do not know how.

This is what I have at the moment:

Startup

services.Configure<MyOptions>(Configuration.GetSection("MyOptions"));
services.AddHostedService<MyHostedService>();

MyOptions

public class MyOptions
{
    public string MyOption{ get; set; }
}

Appsettings

"MyOptions": {
  "MyOption": "42"
}

MyHostedService

public MyHostedService(ILogger<MyHostedService> logger)
{
    _logger = logger;
    // Where are my options?! :(
}

Upvotes: 3

Views: 3983

Answers (1)

FlashOver
FlashOver

Reputation: 2073

You are almost there. You got only one thing left to do:

Just use constructor dependency injection with IOptions<MyOptions> or related (depending on your scenario) in your IHostedService:

public MyHostedService(ILogger<MyHostedService> logger, IOptions<MyOptions> optionsAccessor)
{
    _logger = logger;
    _options = optionsAccessor.Value;
}

For more details, see Options pattern in ASP.NET Core.

Upvotes: 5

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