37 lines
1.1 KiB
C#
37 lines
1.1 KiB
C#
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using FluentValidation;
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using MediatR;
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namespace CQRS_Simple.API.PipelineBehaviors
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{
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public class ValidationBehavior<TRequest, TResponse> : IPipelineBehavior<TRequest, TResponse>
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where TRequest : IRequest<TResponse>
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{
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public readonly IEnumerable<IValidator<TRequest>> _validators;
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public ValidationBehavior(IEnumerable<IValidator<TRequest>> validators)
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{
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_validators = validators;
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}
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public Task<TResponse> Handle(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate<TResponse> next)
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{
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var context = new ValidationContext<TRequest>(request);
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var failures = _validators
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.Select(v => v.Validate(context))
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.SelectMany(result => result.Errors)
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.Where(f => f != null)
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.ToList();
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if (failures.Count != 0)
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{
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throw new ValidationException(failures);
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}
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return next();
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}
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}
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}
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