如何在具有.NET核心的整洁架构中使用LoggingBehaviour？

Question

我在Angular的.NET核心项目中使用CleanArchitecture，并尝试在该项目模板中使用位于CleanArchitecture/src/Application/Common/Behaviours/上的LoggingBehaviour类，如下所示：

namespace CleanArchitecture.Application.Common.Behaviours
{
    public class LoggingBehaviour<TRequest> : IRequestPreProcessor<TRequest>
    {
        private readonly ILogger _logger;
        private readonly ICurrentUserService _currentUserService;
        private readonly IIdentityService _identityService;

        public LoggingBehaviour(ILogger<TRequest> logger, ICurrentUserService currentUserService, 
            IIdentityService identityService)
        {
            _logger = logger;
            _currentUserService = currentUserService;
            _identityService = identityService;
        }

        public async Task Process(TRequest request, CancellationToken cancellationToken)
        {
            var requestName = typeof(TRequest).Name;
            var userId = _currentUserService.UserId ?? string.Empty;
            string userName = string.Empty;

            if (!string.IsNullOrEmpty(userId))
            {
                userName = await _identityService.GetUserNameAsync(userId);
            }

            _logger.LogInformation("CleanArchitecture Request: {Name} {@UserId} {@UserName} {@Request}",
                requestName, userId, userName, request);
        }
    }
}

但是，我不知道如何正确使用它，因为解决方案模板中没有示例用法。您能告诉我如何根据this模板示例正确使用它吗？

Answer 1

你可以像下面这样使用；

namespace CleanArchitecture.Application.UnitTests.Common.Behaviours
{
    public class RequestLoggerTests
    {
        private readonly Mock<ILogger<CreateTodoItemCommand>> _logger;
        private readonly Mock<ICurrentUserService> _currentUserService;
        private readonly Mock<IIdentityService> _identityService;


        public RequestLoggerTests()
        {
            _logger = new Mock<ILogger<CreateTodoItemCommand>>();

            _currentUserService = new Mock<ICurrentUserService>();

            _identityService = new Mock<IIdentityService>();
        }

        [Test]
        public async Task ShouldCallGetUserNameAsyncOnceIfAuthenticated()
        {
            _currentUserService.Setup(x => x.UserId).Returns("Administrator");

            var requestLogger = new LoggingBehaviour<CreateTodoItemCommand>(_logger.Object, _currentUserService.Object, _identityService.Object);

            await requestLogger.Process(new CreateTodoItemCommand { ListId = 1, Title = "title" }, new CancellationToken());

            _identityService.Verify(i => i.GetUserNameAsync(It.IsAny<string>()), Times.Once);
        }

        [Test]
        public async Task ShouldNotCallGetUserNameAsyncOnceIfUnauthenticated()
        {
            var requestLogger = new LoggingBehaviour<CreateTodoItemCommand>(_logger.Object, _currentUserService.Object, _identityService.Object);

            await requestLogger.Process(new CreateTodoItemCommand { ListId = 1, Title = "title" }, new CancellationToken());

            _identityService.Verify(i => i.GetUserNameAsync(null), Times.Never);
        }
    }
}