Rtl.Configuration.FluentValidation

Rtl.Configuration.FluentValidation is based on package Rtl.Configuration.Validation and extends it by providing ability to use FluentValidation library for creating sophisticated validators not possible with DataAnnotations

Example

Suppose there is config class:

public class MyConfiguration
{
    [Required]
    public string Name { get; set; }

    [Range(0, 10)]
    public int Value { get; set; }
}

and validator:

using FluentValidation;

public class MyConfigurationValidator : AbstractValidator<MyConfiguration>
{
    public MyConfigurationValidator()
    {
        RuleFor(x => x.Name).Length(2, 5);
        RuleFor(x => x.Value).Must(x => x % 2 == 0);
    }
}

The config class is registered like this:

public void ConfigureServices(IServiceCollection services)
{
    services.AddConfig<MyConfiguration, MyConfigurationValidator>(Configuration, "ConfigSectionName");
}

Now the config values are validated based on DataAnnotations attributes and on rules in MyConfigurationValidator

Api

AddConfig

public static IServiceCollection AddConfig<TConfig, TValidator>(this IServiceCollection services, IConfiguration configuration, string sectionName)
    where TConfig : class, new()
    where TValidator : AbstractValidator<TConfig>

Adds IOptions<T> to IoC container, validates config before Startup.Configure is called using DataAnnotations attributes and TValidator

GetConfig

public static TConfig GetConfig<TConfig, TValidator>(this IConfiguration configuration, string sectionName)
    where TConfig : class, new()
    where TValidator : AbstractValidator<TConfig>, new()

Gets config of type T from configuration, validates and returns it. Use this method when you don't need to add IOptions and you want to get validated config inside ConfigureServices method and use right away