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Nguyen Nam Teacher
Asked At: 1630869115000 In: .Netcore
Nguyen Nam Teacher Asked At: 1630869115000 In: .Netcore
Service trong .net
Chào mọi người. Hiện tại em đang có vấn đề như này nhờ mọi người giải quyết giúp ạ.
  • Yêu cầu chức năng:
    + Sau khi gửi mail sẽ update trạng thái là đã gửi request gửi mail.
    + Sau khi nhận thông báo gửi mail thành công từ webhook của server mail sẽ update trạng thái là gửi mail thành công và tiến hành gửi mail thông báo.
  • Mong muốn:
    + Hiện tại em muốn chia thành 2 service là
    ・ Service gửi mail
    ・ Service update trạng thái mail
    + Code sẽ kiểu như thế này: 
    		public class ServiceSendMail : IServiceSendMail {
			IServiceUpdateStatusMail _b;
		
			public ServiceSendMail(IServiceUpdateStatusMail b){
				_b = b;
			}

			public void SendMail(){
				_b.UpdateStatus();
			}
		}

		public class ServiceUpdateStatusMail : IServiceUpdateStatusMail{
			IServiceSendMail _a;
			
			public ServiceUpdateStatusMail(IServiceSendMail a){
				_a = a;
			}

			public void UpdateStatus(){
				_a.SendMail();
			}
		}
  • Vấn đề gặp phải:
    Lỗi stackoverflow exception
  • Cách làm tạm thời:
    + Gộp 2 service vào 1
Mọi người còn cách nào hay ho hơn không ạ. Chỉ giúp em với
Em xin cảm ơn trước ạ.
  • 1 Answer(s)
  • 1657 Views
  • Answer
c# netcore
Remain: 5
1 Answer
Avatar
monkey Enlightened
Added an answer at: 1630869854000
monkey Enlightened
Added an answer at: 1630869854000
mediator design pattern
để giải quyết bài toán này nhé: 
public interface IServiceSendMail
{
    void SendMail();
}

public interface IServiceUpdateStatusMail
{
    void UpdateStatus();
}

public class MailServiceMediator
{

    IServiceSendMail Sender;
    IServiceUpdateStatusMail StatusUpdater;

    public void SendMail()
    {
        Sender.SendMail();
        StatusUpdater.UpdateStatus();
        Sender.SendMail();
    }
}

public class ServiceSendMail : IServiceSendMail
{
    public void SendMail()
    {
    }
}

public class ServiceUpdateStatusMail : IServiceUpdateStatusMail
{
    public void UpdateStatus()
    {
    }
}
  • 1
  • Reply
Cách này cũng khá giống với việc trong SendMailService không trực tiếp gọi UpdateStatusMailService mà thông qua IServiceProvider để gọi service UpdateStatusMailService.
Code sẽ kiểu như thế này ạ 
public class ServiceA : IServiceA {
	IServiceProvider _serviceProvider;
	
	public ServiceA(IServiceProvider serviceProvider){
		_serviceProvider = serviceProvider;
	}
	
	public void DoSomething(){
		_serviceProvider.GetRequiredService().DoSomething();
	}
}

public class ServiceB : IServiceB{
	IServiceProvider _serviceProvider;
	
	public ServiceB(IServiceProvider serviceProvider){
		_serviceProvider = serviceProvider;
	}
	
	public void DoSomething(){
		_serviceProvider.GetRequiredService().DoSomething();
	}
}
 –  Nguyen Nam 1630876802000
Ừ, bản chất nó là mediator design pattern, có thằng còn tạo hẳn 1 thư viện cho C# đó: https://github.com/jbogard/MediatR
  –  monkey 1630879624000
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