66 lines
2.5 KiB
C#
66 lines
2.5 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="DynamicModuleRegistry.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web {
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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internal sealed class DynamicModuleRegistry {
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private const string _moduleNameFormat = "__DynamicModule_{0}_{1}";
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private readonly List<DynamicModuleRegistryEntry> _entries = new List<DynamicModuleRegistryEntry>();
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private bool _entriesReadonly;
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private readonly object _lockObj = new object();
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public void Add(Type moduleType) {
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if (moduleType == null) {
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throw new ArgumentNullException("moduleType");
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}
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if (!typeof(IHttpModule).IsAssignableFrom(moduleType)) {
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string message = String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.DynamicModuleRegistry_TypeIsNotIHttpModule), moduleType);
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throw new ArgumentException(message, "moduleType");
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}
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lock (_lockObj) {
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if (_entriesReadonly) {
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// modules have already been initialized, e.g. Application_Start has already run
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throw new InvalidOperationException(SR.GetString(SR.DynamicModuleRegistry_ModulesAlreadyInitialized));
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}
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_entries.Add(new DynamicModuleRegistryEntry(MakeUniqueModuleName(moduleType), moduleType.AssemblyQualifiedName));
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}
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}
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public ICollection<DynamicModuleRegistryEntry> LockAndFetchList() {
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lock (_lockObj) {
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// once the list has been returned, it must be immutable
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_entriesReadonly = true;
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return _entries;
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}
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}
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private static string MakeUniqueModuleName(Type moduleType) {
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// returns a unique name for this module
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return String.Format(CultureInfo.InvariantCulture, _moduleNameFormat, moduleType.AssemblyQualifiedName, Guid.NewGuid());
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}
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}
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internal struct DynamicModuleRegistryEntry {
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public readonly string Name;
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public readonly string Type;
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public DynamicModuleRegistryEntry(string name, string type) {
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Name = name;
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Type = type;
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}
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}
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}
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