40 lines
1.6 KiB
C#
40 lines
1.6 KiB
C#
// Copyright (c) .NET Foundation. All rights reserved.
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// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
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using System;
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using System.Reflection;
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namespace Microsoft.AspNetCore.Hosting
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{
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/// <summary>
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/// Marker attribute indicating an implementation of <see cref="IHostingStartup"/> that will be loaded and executed when building an <see cref="IWebHost"/>.
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/// </summary>
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[AttributeUsage(AttributeTargets.Assembly, Inherited = false, AllowMultiple = true)]
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public sealed class HostingStartupAttribute : Attribute
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{
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/// <summary>
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/// Constructs the <see cref="HostingStartupAttribute"/> with the specified type.
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/// </summary>
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/// <param name="hostingStartupType">A type that implements <see cref="IHostingStartup"/>.</param>
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public HostingStartupAttribute(Type hostingStartupType)
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{
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if (hostingStartupType == null)
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{
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throw new ArgumentNullException(nameof(hostingStartupType));
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}
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if (!typeof(IHostingStartup).GetTypeInfo().IsAssignableFrom(hostingStartupType.GetTypeInfo()))
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{
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throw new ArgumentException($@"""{hostingStartupType}"" does not implement {typeof(IHostingStartup)}.", nameof(hostingStartupType));
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}
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HostingStartupType = hostingStartupType;
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}
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/// <summary>
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/// The implementation of <see cref="IHostingStartup"/> that should be loaded when
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/// starting an application.
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/// </summary>
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public Type HostingStartupType { get; }
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}
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} |