parr_api/PARR.EsppTemplateSyncWorker/Worker.cs

using PARR.EsppTemplateSync;

namespace PARR.EsppTemplateSyncWorker
{
    public class Worker : BackgroundService
    {
        private readonly ILogger<Worker> _logger;
        private ITemplateSyncer? templateSyncer;
        private readonly IServiceProvider serviceProvider;

        public Worker(
            ILogger<Worker> logger,
            IServiceProvider serviceProvider
            )
        {
            _logger = logger;
            this.serviceProvider = serviceProvider;
        }

        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            using var scope = serviceProvider.CreateScope();
            var services = scope.ServiceProvider;
            templateSyncer = services.GetService<ITemplateSyncer>();

            if (templateSyncer != null) await templateSyncer.StartAsync();
        }

        public override Task StopAsync(CancellationToken cancellationToken)
        {
            templateSyncer?.Stop();

            return base.StopAsync(cancellationToken);
        }
    }
}