当我部署它时，.net 核心 3.1 中的 firebase 存储库在服务器上不起作用，但在本地运行良好

Question

我想使用 API .net 核心 3.1 在 Firestore 中发送推荐，我正在使用干净的架构。 和一个 CQRS 模式。 像这样：

namespace SmartRestaurant.Infrastructure.Services
{
    public class FirebaseConfig
    {
        public string BasePath { get; set; }
   
    }

    public class FirebaseRepository : IFirebaseRepository
    {
        readonly string _DataBaseBasepath;
        readonly FirestoreDb _db;
        public FirebaseRepository(IOptions<FirebaseConfig> conf)
        {
            _DataBaseBasepath = conf.Value.BasePath;

            if (string.IsNullOrEmpty(_DataBaseBasepath))
            {
                throw new ArgumentNullException("fireBase Path not found in appsettings");
            }
            var pathConfigFile = Path.Combine(AppContext.BaseDirectory, "jsonProjectConfogFile.json");
            Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", pathConfigFile);
            _db = FirestoreDb.Create("^projectName");
        }

        public async Task<T> AddAsync<T>(string path, T data, CancellationToken cancellationToken)
        {
            try
            {
                DocumentReference doc = _db.Document(_DataBaseBasepath + "/" + path);
                var objectTosend = getOrderToDictionary(data);
                await doc.SetAsync(objectTosend, null, cancellationToken);
                return data;
            }
            catch (Exception exe)
            {
                throw exe;
            }
             
        }
      
   

        public async Task<T> UpdateAsync<T>(string path, T data, CancellationToken cancellationToken)
        {
            try
            {
                DocumentReference doc = _db.Document(_DataBaseBasepath + "/" + path);
                var objectTosend = getOrderToDictionary(data);             
                await doc.UpdateAsync(objectTosend, null, cancellationToken);
                return data;
            }
            catch (Exception exe)
            {
                throw exe;
            }
        }

    }
}

该代码位于基础设施层，该服务的接口位于应用层

  public interface IFirebaseRepository
    {
        Task<T> AddAsync<T>(string path,T data,CancellationToken cancellationToken);
        
        Task<T> UpdateAsync<T>(string path,T data, CancellationToken cancellationToken);
    }

这个服务的注入是在这样的基础设施层

            services.AddTransient < IFirebaseRepository, FirebaseRepository> ();

我在应用层使用这个服务是这样的：

  public class OrdersCommandsHandlers : IRequestHandler<CreateOrderCommand, OrderDto>,
        IRequestHandler<UpdateOrderCommand, NoContent>,
      {
        private readonly IApplicationDbContext _context;
        private readonly IMapper _mapper;
        private readonly IUserService _userService;
        private readonly IFirebaseRepository _fireBase;
        private readonly string CreateAction = "CreateAction";
        private readonly string UpdateAction = "UpdateAction";

        public OrdersCommandsHandlers(IApplicationDbContext context, 
                                    IMapper mapper,
                                    IUserService userService,
                                    IFirebaseRepository fireBase)
        {
            _context = context;
            _mapper = mapper;
            _userService = userService;
            _fireBase = fireBase;
        }

        public async Task<OrderDto> Handle(CreateOrderCommand request, CancellationToken cancellationToken)
        {
            var validator = new CreateOrderCommandValidator();
            var result = await validator.ValidateAsync(request, cancellationToken).ConfigureAwait(false);
            if (!result.IsValid) throw new ValidationException(result);

         ....

            await _context.SaveChangesAsync(cancellationToken);

            var orderDto = _mapper.Map<OrderDto>(order);
            orderDto.CurrencyExchange = CurrencyConverter.GetDefaultCurrencyExchangeList(orderDto.TotalToPay, foodBusiness.DefaultCurrency);         
            var path = request.FoodBusinessId + "/Orders/" + orderDto.OrderId;
            await _fireBase.AddAsync(path, orderDto, cancellationToken);
                
          ......

            return _mapper.Map<OrderDto>(newOrder);
        }

       public async Task<NoContent> Handle(UpdateOrderCommand request, CancellationToken cancellationToken)
        {
            var validator = new UpdateOrderCommandValidator();
            var result = await validator.ValidateAsync(request, cancellationToken).ConfigureAwait(false);
            if (!result.IsValid) throw new ValidationException(result);

       ......
            var orderDto = _mapper.Map<OrderDto>(order);
            var foodBusiness = await _context.FoodBusinesses.FindAsync(order.FoodBusinessId);
            if (foodBusiness != null)
                orderDto.CurrencyExchange = CurrencyConverter.GetDefaultCurrencyExchangeList(orderDto.TotalToPay, foodBusiness.DefaultCurrency);
            var path = order.FoodBusinessId + "/Orders/" + order.OrderId;
            await _fireBase.UpdateAsync(path,orderDto, cancellationToken);
            
            return default;
        }

}

when i deploiye this code in the server i have this erreur :

Error constructing handler for request of type MediatR.IRequestHandler`2[SmartRestaurant.Application.Orders.Commands.CreateOrderCommand,SmartRestaurant.Application.Common.Dtos.OrdersDtos.OrderDto]. Register your handlers with the container. See the samples in GitHub for examples.



i try to using fireStor in the NetCore 3 api with CQRS, and a erreur Appear when i use the hendler that contaie firebase service.
and locally all work well , the probleme appear in the server when i deploie the code.

Answer 1

这个问题的原因是在 firebaseService 的构造函数中

   public FirebaseRepository(IOptions<FirebaseConfig> conf)
        {
            _DataBaseBasepath = conf.Value.BasePath;

            if (string.IsNullOrEmpty(_DataBaseBasepath))
            {
                throw new ArgumentNullException("fireBase Path not found in appsettings");
            }
            var pathConfigFile = Path.Combine(AppContext.BaseDirectory, "jsonProjectConfogFile.json");
            Environment.SetEnvironmentVariable("GOOGLE_APPLICATION_CREDENTIALS", pathConfigFile);
            _db = FirestoreDb.Create("^projectName");
        }

服务器中的 conf.Value.BasePath 为 null，因为 appsetting.json 不包含 FirebaseConfig 部分。