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develop
src/MassTransit/Initializers/PropertyProviders/ToNullablePropertyProvider.cs
37 строк
1 KB
Chris Patterson
Integration of all external packages into MassTransit, split out into Abstractions, Middleware, and the core MassTransit assembly.
22 янв 2022, 18:24
22 янв 2022, 18:24
b5b4f50
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namespace MassTransit.Initializers.PropertyProviders { using System.Threading.Tasks; using Util; public class ToNullablePropertyProvider<TInput, TProperty> : IPropertyProvider<TInput, TProperty?> where TInput : class where TProperty : struct { readonly IPropertyProvider<TInput, TProperty> _provider; public ToNullablePropertyProvider(IPropertyProvider<TInput, TProperty> provider) { _provider = provider; } public Task<TProperty?> GetProperty<T>(InitializeContext<T, TInput> context) where T : class { if (!context.HasInput) return TaskUtil.Default<TProperty?>(); Task<TProperty> propertyTask = _provider.GetProperty(context); if (propertyTask.Status == TaskStatus.RanToCompletion) return Task.FromResult<TProperty?>(propertyTask.Result); async Task<TProperty?> GetPropertyAsync() { return await propertyTask.ConfigureAwait(false); } return GetPropertyAsync(); } } }