c# - 构造函数可以抛出代码的通用重试逻辑

Question

跟进这里的问题: Cleanest way to write retry logic?

在答案中，定义并使用了一个重试函数的通用类:

Retry.Do(() => SomeFunctionThatCanFail(), TimeSpan.FromSeconds(1));

您将如何实现通用重试，构造函数也可以在其中抛出异常？

所以我不只是想重试:

   SomeFunctionThatCanFail() 

我想以通用方式重试以下 block :

   SomeClass sc = new SomeClass();
   sc.SomeFunctionThatCanFail();

Answer 1

where the constructor can throw also?

通常这是个坏主意。我建议查看工厂模式:

public class SomeClass
{
  private SomeClass()
  {
  }

  public static SomeClass GetInstance()
  {
    // Throw Exception here, not in constructor
  }

  public void SomeFunctionThatCanFail()
  {
  }
}

现在您可以:

Retry.Do(() => 
  SomeClass.GetInstance().SomeFunctionThatCanFail(), 
  TimeSpan.FromSeconds(1));