如何在lambda之外集中DI代码函数.cs为了更好地分离关注点而进入专用类

我如何在单独的课上做DI?

下面是如何在函数类中完成。但是,为了更好地分离关注点,我希望将其放入专用类中。

namespace SQSMessageProcessor
{
    public class Function
    {
        private ILambdaConfiguration Configuration { get; }
        private IOrdersService OrderService { get; }
        public Function()
        {
            var serviceCollection = new ServiceCollection();
            ConfigureServices(serviceCollection);
            var serviceProvider = serviceCollection.BuildServiceProvider();
            Configuration = serviceProvider.GetService<ILambdaConfiguration>();
            OrderService = serviceProvider.GetService<IOrdersService>();
        }
        private void ConfigureServices(IServiceCollection serviceCollection)
        {
            serviceCollection.AddTransient<ILambdaConfiguration, LambdaConfiguration>();
            serviceCollection.AddTransient<IOrdersService, OrdersService>();
        }

        public async Task<string> FunctionHandler(SQSEvent sqsEvent, ILambdaContext context)
        {
            //Console.WriteLine(Configuration.Configuration["hello"]);
            Console.WriteLine($"Message ID: {sqsEvent.Records[0].MessageId}");
            Console.WriteLine($"Event Source: {sqsEvent.Records[0].EventSource}");
            Console.WriteLine($"Record Body Parsed:");

            var details = JObject.Parse(sqsEvent.Records[0].Body);
            Console.WriteLine(details);
            var order = details.ToObject<Order>();
            await OrderService.ProcessOrder(order);
            return $"Processed {sqsEvent.Records.Count} records.";
        }
    }
}