Read configuration workerservice

public class Program {
    public static void Main(string[] args) {
        CreateHostBuilder(args).Build().Run();
    }

    public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)
            .ConfigureServices((hostContext, services) => {
                IConfiguration configuration = hostContext.Configuration;

                WorkerOptions options = configuration
                  .GetSection("WCF")
                  .Get<WorkerOptions>();

                services.AddSingleton(options);

                services.AddHostedService<Worker>();
            });
}

public class Worker : BackgroundService {
    private readonly ILogger<Worker> logger;
    private readonly WorkerOptions options;

    public Worker(ILogger<Worker> logger, WorkerOptions options) {
        this.logger = logger;
        this.options = options;
    }

    protected override async Task ExecuteAsync(CancellationToken stoppingToken) {
        while (!stoppingToken.IsCancellationRequested) {
            //do something that uses options

            logger.LogInformation("Worker running at: {time}", DateTimeOffset.Now);
            await Task.Delay(5000, stoppingToken);
        }
    }
}

public class WorkerOptions {
    public string AminServiceUri { get; set; }
    public string BillServiceUri { get; set; }

    //... other properties
}

//File appsettings.json
{
  "WCF": {
    "AminServiceUri":"http://localhost:45108/ServiceHost/v1/AminService.svc",
    "BillServiceUri":"http://localhost:45108/ServiceHost/v1/BillService.svc",

    //...other key-value pairs
  },
  "Logging": {
    "ExcessiveLogging": false
  }

}

Source: stackoverflow.com

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