服务结构QoS日志记录

我有一个微服务应用程序,我想记录服务质量(QoS)日志-每个服务调用一个日志行,无论服务调用是什么。

我不想更改服务方法的签名以获取更多参数。相反,我希望以某种方式更改远程处理堆栈,以便涵盖所有当前和未来的服务调用。

answer 写了一篇 IServiceRemotingClient 使用 AsyncLocal 存储上下文信息。例如,这不允许我检查响应类型和日志异常堆栈跟踪。

有没有一种方法可以将SF的调用封装到更接近我的服务方法的方法中,在那里我可以记录异常和结果,而不是在远程处理级别,那里所有的东西都已经打包为一个黑盒

public class LoggingServiceRemotingClient: IServiceRemotingClient
{
   IServiceRemotingClient standardClient;
   ...
   public async Task<IServiceRemotingResponseMessage> RequestResponseAsync(IServiceRemotingRequestMessage requestMessage)
   {
     var callId = Guid.NewGuid();
     try{
       SetCallIdInAsyncLocal(callId); // trimmed down pseudo code
       var response = await this.standardClient.RequestResponseAsync(requestMessage);
       Log.Ok(callId); // trimmed down pseudo code
     } catch (Exception x){
       // this will never be hit because the response body was already created with an exception serialized in it.
       // how do I catch such exceptions across all calls?
       // also some calls a due to client errors, others are internal - a single place to differentiate would be nice.
       Log.Fail(callId, x);
     }
   }
}

callId 要记录自己的进程:

public class MyService: StatelessService, IMyService
{
  public async Task<string> GetMeAString(string prefix)
  {
      Debug.Assert(prefix!=null); // this exception is a caller fault
      Guid callId = GetFromAsyncLocal();
      Log(callId, "Got a call here")
      string result = prefix+": "+Guid.NewGuid().ToString();
      Log(callId, "returning "+result);
      return result;
  }
}

我不明白为什么 异步本地 在这里有效,但很明显,确实有效。