Versatile OpenID Connect stack for ASP.NET Core and Microsoft.Owin (compatible with ASP.NET 4.6.1)
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/*
* Licensed under the Apache License, Version 2.0 (http://www.apache.org/licenses/LICENSE-2.0)
* See https://github.com/openiddict/openiddict-core for more information concerning
* the license and the contributors participating to this project.
*/
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Runtime.CompilerServices;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.Options;
using Microsoft.Extensions.Primitives;
using OpenIddict.Abstractions;
using SR = OpenIddict.Abstractions.OpenIddictResources;
namespace OpenIddict.Core
{
/// <summary>
/// Provides methods allowing to cache tokens after retrieving them from the store.
/// </summary>
/// <typeparam name="TToken">The type of the Token entity.</typeparam>
public class OpenIddictTokenCache<TToken> : IOpenIddictTokenCache<TToken>, IDisposable where TToken : class
{
private readonly MemoryCache _cache;
private readonly ConcurrentDictionary<string, CancellationTokenSource> _signals;
private readonly IOpenIddictTokenStore<TToken> _store;
public OpenIddictTokenCache(
IOptionsMonitor<OpenIddictCoreOptions> options,
IOpenIddictTokenStoreResolver resolver)
{
_cache = new MemoryCache(new MemoryCacheOptions
{
SizeLimit = options.CurrentValue.EntityCacheLimit
});
_signals = new ConcurrentDictionary<string, CancellationTokenSource>(StringComparer.Ordinal);
_store = resolver.Get<TToken>();
}
/// <inheritdoc/>
public async ValueTask AddAsync(TToken token, CancellationToken cancellationToken)
{
if (token == null)
{
throw new ArgumentNullException(nameof(token));
}
_cache.Remove(new
{
Method = nameof(FindAsync),
Subject = await _store.GetSubjectAsync(token, cancellationToken),
Client = await _store.GetApplicationIdAsync(token, cancellationToken)
});
_cache.Remove(new
{
Method = nameof(FindAsync),
Subject = await _store.GetSubjectAsync(token, cancellationToken),
Client = await _store.GetApplicationIdAsync(token, cancellationToken),
Status = await _store.GetStatusAsync(token, cancellationToken)
});
_cache.Remove(new
{
Method = nameof(FindAsync),
Subject = await _store.GetSubjectAsync(token, cancellationToken),
Client = await _store.GetApplicationIdAsync(token, cancellationToken),
Status = await _store.GetStatusAsync(token, cancellationToken),
Type = await _store.GetTypeAsync(token, cancellationToken)
});
_cache.Remove(new
{
Method = nameof(FindByApplicationIdAsync),
Identifier = await _store.GetApplicationIdAsync(token, cancellationToken)
});
_cache.Remove(new
{
Method = nameof(FindByAuthorizationIdAsync),
Identifier = await _store.GetAuthorizationIdAsync(token, cancellationToken)
});
_cache.Remove(new
{
Method = nameof(FindByIdAsync),
Identifier = await _store.GetIdAsync(token, cancellationToken)
});
_cache.Remove(new
{
Method = nameof(FindByReferenceIdAsync),
Identifier = await _store.GetReferenceIdAsync(token, cancellationToken)
});
_cache.Remove(new
{
Method = nameof(FindBySubjectAsync),
Subject = await _store.GetSubjectAsync(token, cancellationToken)
});
await CreateEntryAsync(new
{
Method = nameof(FindByIdAsync),
Identifier = await _store.GetIdAsync(token, cancellationToken)
}, token, cancellationToken);
await CreateEntryAsync(new
{
Method = nameof(FindByReferenceIdAsync),
Identifier = await _store.GetReferenceIdAsync(token, cancellationToken)
}, token, cancellationToken);
}
/// <inheritdoc/>
public void Dispose()
{
foreach (var signal in _signals)
{
signal.Value.Dispose();
}
_cache.Dispose();
}
/// <inheritdoc/>
public IAsyncEnumerable<TToken> FindAsync(string subject, string client, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(subject))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1197), nameof(subject));
}
if (string.IsNullOrEmpty(client))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1123), nameof(client));
}
return ExecuteAsync(cancellationToken);
async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
{
var parameters = new
{
Method = nameof(FindAsync),
Subject = subject,
Client = client
};
if (!_cache.TryGetValue(parameters, out ImmutableArray<TToken> tokens))
{
var builder = ImmutableArray.CreateBuilder<TToken>();
await foreach (var token in _store.FindAsync(subject, client, cancellationToken))
{
builder.Add(token);
await AddAsync(token, cancellationToken);
}
tokens = builder.ToImmutable();
await CreateEntryAsync(parameters, tokens, cancellationToken);
}
foreach (var token in tokens)
{
yield return token;
}
}
}
/// <inheritdoc/>
public IAsyncEnumerable<TToken> FindAsync(
string subject, string client,
string status, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(subject))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1197), nameof(subject));
}
if (string.IsNullOrEmpty(client))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1123), nameof(client));
}
if (string.IsNullOrEmpty(status))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1198), nameof(status));
}
return ExecuteAsync(cancellationToken);
async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
{
var parameters = new
{
Method = nameof(FindAsync),
Subject = subject,
Client = client,
Status = status
};
if (!_cache.TryGetValue(parameters, out ImmutableArray<TToken> tokens))
{
var builder = ImmutableArray.CreateBuilder<TToken>();
await foreach (var token in _store.FindAsync(subject, client, status, cancellationToken))
{
builder.Add(token);
await AddAsync(token, cancellationToken);
}
tokens = builder.ToImmutable();
await CreateEntryAsync(parameters, tokens, cancellationToken);
}
foreach (var token in tokens)
{
yield return token;
}
}
}
/// <inheritdoc/>
public IAsyncEnumerable<TToken> FindAsync(
string subject, string client,
string status, string type, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(subject))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1197), nameof(subject));
}
if (string.IsNullOrEmpty(client))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1123), nameof(client));
}
if (string.IsNullOrEmpty(status))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1198), nameof(status));
}
if (string.IsNullOrEmpty(type))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1199), nameof(type));
}
return ExecuteAsync(cancellationToken);
async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
{
var parameters = new
{
Method = nameof(FindAsync),
Subject = subject,
Client = client,
Status = status,
Type = type
};
if (!_cache.TryGetValue(parameters, out ImmutableArray<TToken> tokens))
{
var builder = ImmutableArray.CreateBuilder<TToken>();
await foreach (var token in _store.FindAsync(subject, client, status, type, cancellationToken))
{
builder.Add(token);
await AddAsync(token, cancellationToken);
}
tokens = builder.ToImmutable();
await CreateEntryAsync(parameters, tokens, cancellationToken);
}
foreach (var token in tokens)
{
yield return token;
}
}
}
/// <inheritdoc/>
public IAsyncEnumerable<TToken> FindByApplicationIdAsync(string identifier, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(identifier))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1194), nameof(identifier));
}
return ExecuteAsync(cancellationToken);
async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
{
var parameters = new
{
Method = nameof(FindByApplicationIdAsync),
Identifier = identifier
};
if (!_cache.TryGetValue(parameters, out ImmutableArray<TToken> tokens))
{
var builder = ImmutableArray.CreateBuilder<TToken>();
await foreach (var token in _store.FindByApplicationIdAsync(identifier, cancellationToken))
{
builder.Add(token);
await AddAsync(token, cancellationToken);
}
tokens = builder.ToImmutable();
await CreateEntryAsync(parameters, tokens, cancellationToken);
}
foreach (var token in tokens)
{
yield return token;
}
}
}
/// <inheritdoc/>
public IAsyncEnumerable<TToken> FindByAuthorizationIdAsync(string identifier, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(identifier))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1194), nameof(identifier));
}
return ExecuteAsync(cancellationToken);
async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
{
var parameters = new
{
Method = nameof(FindByAuthorizationIdAsync),
Identifier = identifier
};
if (!_cache.TryGetValue(parameters, out ImmutableArray<TToken> tokens))
{
var builder = ImmutableArray.CreateBuilder<TToken>();
await foreach (var token in _store.FindByAuthorizationIdAsync(identifier, cancellationToken))
{
builder.Add(token);
await AddAsync(token, cancellationToken);
}
tokens = builder.ToImmutable();
await CreateEntryAsync(parameters, tokens, cancellationToken);
}
foreach (var token in tokens)
{
yield return token;
}
}
}
/// <inheritdoc/>
public ValueTask<TToken?> FindByIdAsync(string identifier, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(identifier))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1194), nameof(identifier));
}
var parameters = new
{
Method = nameof(FindByIdAsync),
Identifier = identifier
};
if (_cache.TryGetValue(parameters, out TToken? token))
{
return new ValueTask<TToken?>(token);
}
return new ValueTask<TToken?>(ExecuteAsync());
async Task<TToken?> ExecuteAsync()
{
if ((token = await _store.FindByIdAsync(identifier, cancellationToken)) != null)
{
await AddAsync(token, cancellationToken);
}
await CreateEntryAsync(parameters, token, cancellationToken);
return token;
}
}
/// <inheritdoc/>
public ValueTask<TToken?> FindByReferenceIdAsync(string identifier, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(identifier))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1194), nameof(identifier));
}
var parameters = new
{
Method = nameof(FindByReferenceIdAsync),
Identifier = identifier
};
if (_cache.TryGetValue(parameters, out TToken? token))
{
return new ValueTask<TToken?>(token);
}
return new ValueTask<TToken?>(ExecuteAsync());
async Task<TToken?> ExecuteAsync()
{
if ((token = await _store.FindByReferenceIdAsync(identifier, cancellationToken)) != null)
{
await AddAsync(token, cancellationToken);
}
await CreateEntryAsync(parameters, token, cancellationToken);
return token;
}
}
/// <inheritdoc/>
public IAsyncEnumerable<TToken> FindBySubjectAsync(string subject, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(subject))
{
throw new ArgumentException(SR.GetResourceString(SR.ID1197), nameof(subject));
}
return ExecuteAsync(cancellationToken);
async IAsyncEnumerable<TToken> ExecuteAsync([EnumeratorCancellation] CancellationToken cancellationToken)
{
var parameters = new
{
Method = nameof(FindBySubjectAsync),
Identifier = subject
};
if (!_cache.TryGetValue(parameters, out ImmutableArray<TToken> tokens))
{
var builder = ImmutableArray.CreateBuilder<TToken>();
await foreach (var token in _store.FindBySubjectAsync(subject, cancellationToken))
{
builder.Add(token);
await AddAsync(token, cancellationToken);
}
tokens = builder.ToImmutable();
await CreateEntryAsync(parameters, tokens, cancellationToken);
}
foreach (var token in tokens)
{
yield return token;
}
}
}
/// <inheritdoc/>
public async ValueTask RemoveAsync(TToken token, CancellationToken cancellationToken)
{
if (token == null)
{
throw new ArgumentNullException(nameof(token));
}
var identifier = await _store.GetIdAsync(token, cancellationToken);
if (string.IsNullOrEmpty(identifier))
{
throw new InvalidOperationException(SR.GetResourceString(SR.ID1204));
}
if (_signals.TryRemove(identifier, out CancellationTokenSource? signal))
{
signal.Cancel();
signal.Dispose();
}
}
/// <summary>
/// Creates a cache entry for the specified key.
/// </summary>
/// <param name="key">The cache key.</param>
/// <param name="token">The token to store in the cache entry, if applicable.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> that can be used to abort the operation.</param>
/// <returns>A <see cref="ValueTask"/> that can be used to monitor the asynchronous operation.</returns>
protected virtual async ValueTask CreateEntryAsync(object key, TToken? token, CancellationToken cancellationToken)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
using var entry = _cache.CreateEntry(key);
if (token != null)
{
var signal = await CreateExpirationSignalAsync(token, cancellationToken);
if (signal == null)
{
throw new InvalidOperationException(SR.GetResourceString(SR.ID1196));
}
entry.AddExpirationToken(signal);
}
entry.SetSize(1L);
entry.SetValue(token);
}
/// <summary>
/// Creates a cache entry for the specified key.
/// </summary>
/// <param name="key">The cache key.</param>
/// <param name="tokens">The tokens to store in the cache entry.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> that can be used to abort the operation.</param>
/// <returns>A <see cref="ValueTask"/> that can be used to monitor the asynchronous operation.</returns>
protected virtual async ValueTask CreateEntryAsync(
object key, ImmutableArray<TToken> tokens, CancellationToken cancellationToken)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
using var entry = _cache.CreateEntry(key);
foreach (var token in tokens)
{
var signal = await CreateExpirationSignalAsync(token, cancellationToken);
if (signal == null)
{
throw new InvalidOperationException(SR.GetResourceString(SR.ID1196));
}
entry.AddExpirationToken(signal);
}
entry.SetSize(tokens.Length);
entry.SetValue(tokens);
}
/// <summary>
/// Creates an expiration signal allowing to invalidate all the
/// cache entries associated with the specified token.
/// </summary>
/// <param name="token">The token associated with the expiration signal.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken"/> that can be used to abort the operation.</param>
/// <returns>
/// A <see cref="ValueTask"/> that can be used to monitor the asynchronous operation,
/// whose result returns an expiration signal for the specified token.
/// </returns>
protected virtual async ValueTask<IChangeToken> CreateExpirationSignalAsync(TToken token, CancellationToken cancellationToken)
{
if (token == null)
{
throw new ArgumentNullException(nameof(token));
}
var identifier = await _store.GetIdAsync(token, cancellationToken);
if (string.IsNullOrEmpty(identifier))
{
throw new InvalidOperationException(SR.GetResourceString(SR.ID1204));
}
var signal = _signals.GetOrAdd(identifier, _ => new CancellationTokenSource());
return new CancellationChangeToken(signal.Token);
}
}
}