小编Mr.*_*kin的帖子

我正在尝试将OpenTracing.Contrib.NetCore与Serilog 一起使用。我需要将自定义日志发送给Jaeger。现在，它仅在我使用默认记录器工厂时才有效Microsoft.Extensions.Logging.ILoggerFactory

我的创业公司：

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);

    services.AddSingleton<ITracer>(sp =>
    {
        var loggerFactory = sp.GetRequiredService<ILoggerFactory>();
        string serviceName = sp.GetRequiredService<IHostingEnvironment>().ApplicationName;

        var samplerConfiguration = new Configuration.SamplerConfiguration(loggerFactory)
            .WithType(ConstSampler.Type)
            .WithParam(1);

        var senderConfiguration = new Configuration.SenderConfiguration(loggerFactory)
            .WithAgentHost("localhost")
            .WithAgentPort(6831);

        var reporterConfiguration = new Configuration.ReporterConfiguration(loggerFactory)
            .WithLogSpans(true)
            .WithSender(senderConfiguration);

        var tracer = (Tracer)new Configuration(serviceName, loggerFactory)
            .WithSampler(samplerConfiguration)
            .WithReporter(reporterConfiguration)
            .GetTracer();

        //GlobalTracer.Register(tracer);
        return tracer;
    });
    services.AddOpenTracing();
}

在控制器中的某个位置：

[Route("api/[controller]")]
public class ValuesController : ControllerBase
{
    private readonly ILogger<ValuesController> _logger;

    public ValuesController(ILogger<ValuesController> logger)
    {
        _logger = logger;
    }

    [HttpGet("{id}")] …

我正在尝试将规范模式应用于我的验证逻辑.但我在异步验证方面遇到了一些问题.

假设我有一个AddRequest需要验证的实体(有2个字符串属性FileName和Content).

我需要创建3个验证器:

1. 验证FileName是否包含无效字符

2. 验证内容是否正确

3. 异步验证数据库中是否存在具有FileName的文件.在这种情况下,我应该有类似的东西Task<bool> IsSatisfiedByAsync

但我怎么能同时实现IsSatisfiedBy和IsSatisfiedByAsync？我应该创建2个接口ISpecification,IAsyncSpecification或者我可以在一个接口中创建吗？

我的版本ISpecification(我只需和)

    public interface ISpecification
    {
        bool IsSatisfiedBy(object candidate);
        ISpecification And(ISpecification other);
    }

AndSpecification

public class AndSpecification : CompositeSpecification 
{
    private ISpecification leftCondition;
    private ISpecification rightCondition;

    public AndSpecification(ISpecification left, ISpecification right) 
    {
        leftCondition = left;
        rightCondition = right;
    }

    public override bool IsSatisfiedBy(object o) 
    {
        return leftCondition.IsSatisfiedBy(o) && rightCondition.IsSatisfiedBy(o);
    }
}

要验证文件是否存在,我应该使用:

 await _fileStorage.FileExistsAsync(addRequest.FileName);

IsSatisfiedBy如果我确实需要那个异步,我怎么能写那个支票呢？

例如,这里是FileName的验证器(1)

public …

我有一张桌子:

Id   PersonId     Phone   IsPrimary
-----------------------------------
1     1          12345        1
2     1          55555        0
3     2          66666        1
4     3          77777        1
5     3          88888        0
6     3          99999        0

如何创建约束,允许在每个PersonId中只插入一个IsPrimary = 1.对于所有PersonId,只有一个IsPrimary = 1.因此,在结果中我将无法插入下一条记录:

  Id   PersonId     Phone   IsPrimary
  -----------------------------------
  1     1          00000        1

我有这3个更新

UPDATE [Person]
SET [Email] = @Prefix
WHERE [Id] = @PersonId AND ISNULL([Email], '') <> ''

UPDATE [Person]
SET [Phone] = @Phone
WHERE [Id] = @PersonId AND ISNULL([Phone], '') <> ''

UPDATE [Person]
SET [Skype] = @Skype
WHERE [Id] = @PersonId AND ISNULL([Skype], '') <> ''

我可以将它合并为一个或如何编写更多性能操作？谢谢