parr_api/PARR.TemplateActivatorWorker/Worker.cs

using PARR.TemplateActivator;

namespace PARR.TemplateActivatorWorker
{
    public class Worker : BackgroundService
    {
        private readonly ILogger<Worker> _logger;
        private readonly IMqTemplateActivator mqTemplateActivator;

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

        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
           await mqTemplateActivator.StartAsync();
        }

        public override Task StopAsync(CancellationToken cancellationToken)
        {
            mqTemplateActivator.StopAsync().Wait();

            return base.StopAsync(cancellationToken);
        }
    }
}