179 lines
6.2 KiB
C#
179 lines
6.2 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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namespace ASC.Common.Caching;
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[Singletone]
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public class AscCacheNotify
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{
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private readonly ICacheNotify<AscCacheItem> _cacheNotify;
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private readonly ICache _cache;
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public AscCacheNotify(ICacheNotify<AscCacheItem> cacheNotify, ICache cache)
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{
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_cacheNotify = cacheNotify;
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_cache = cache;
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_cacheNotify.Subscribe((item) => { OnClearCache(); }, CacheNotifyAction.Any);
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}
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public void ClearCache() => _cacheNotify.Publish(new AscCacheItem { Id = Guid.NewGuid().ToString() }, CacheNotifyAction.Any);
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public void OnClearCache()
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{
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_cache.Reset();
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}
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}
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[Singletone]
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public class AscCache : ICache
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{
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private readonly IMemoryCache _memoryCache;
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private readonly ConcurrentDictionary<string, object> _memoryCacheKeys;
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private static CancellationTokenSource _resetCacheToken = new CancellationTokenSource();
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public AscCache(IMemoryCache memoryCache)
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{
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_memoryCache = memoryCache;
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_memoryCacheKeys = new ConcurrentDictionary<string, object>();
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}
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public T Get<T>(string key) where T : class
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{
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return _memoryCache.Get<T>(key);
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}
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public void Insert(string key, object value, TimeSpan sligingExpiration, Action<object, object, EvictionReason, object> evictionCallback = null)
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{
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Insert(key, value, sligingExpiration, null, evictionCallback);
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}
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public void Insert(string key, object value, DateTime absolutExpiration, Action<object, object, EvictionReason, object> evictionCallback = null)
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{
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Insert(key, value, null, absolutExpiration, evictionCallback);
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}
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public void Remove(string key)
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{
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_memoryCache.Remove(key);
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}
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public void Remove(Regex pattern)
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{
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var copy = _memoryCacheKeys.ToDictionary(p => p.Key, p => p.Value);
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var keys = copy.Select(p => p.Key).Where(k => pattern.IsMatch(k));
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foreach (var key in keys)
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{
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_memoryCache.Remove(key);
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}
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}
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public void Reset()
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{
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if (_resetCacheToken != null && !_resetCacheToken.IsCancellationRequested && _resetCacheToken.Token.CanBeCanceled)
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{
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_resetCacheToken.Cancel();
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_resetCacheToken.Dispose();
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}
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_resetCacheToken = new CancellationTokenSource();
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}
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public ConcurrentDictionary<string, T> HashGetAll<T>(string key) =>
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_memoryCache.GetOrCreate(key, r => new ConcurrentDictionary<string, T>());
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public T HashGet<T>(string key, string field)
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{
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if (_memoryCache.TryGetValue<ConcurrentDictionary<string, T>>(key, out var dic)
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&& dic.TryGetValue(field, out var value))
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{
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return value;
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}
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return default;
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}
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public void HashSet<T>(string key, string field, T value)
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{
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var options = new MemoryCacheEntryOptions()
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.SetAbsoluteExpiration(DateTime.MaxValue)
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.AddExpirationToken(new CancellationChangeToken(_resetCacheToken.Token));
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var dic = HashGetAll<T>(key);
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if (value != null)
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{
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dic.AddOrUpdate(field, value, (k, v) => value);
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_memoryCache.Set(key, dic, options);
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}
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else if (dic != null)
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{
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dic.TryRemove(field, out _);
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if (dic.IsEmpty)
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{
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_memoryCache.Remove(key);
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}
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else
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{
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_memoryCache.Set(key, dic, options);
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}
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}
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}
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private void Insert(string key, object value, TimeSpan? sligingExpiration = null, DateTime? absolutExpiration = null, Action<object, object, EvictionReason, object> evictionCallback = null)
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{
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var options = new MemoryCacheEntryOptions()
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.RegisterPostEvictionCallback(EvictionCallback)
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.AddExpirationToken(new CancellationChangeToken(_resetCacheToken.Token));
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if (sligingExpiration.HasValue)
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{
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options = options.SetSlidingExpiration(sligingExpiration.Value);
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}
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if (absolutExpiration.HasValue)
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{
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options = options.SetAbsoluteExpiration(absolutExpiration.Value == DateTime.MaxValue ? DateTimeOffset.MaxValue : new DateTimeOffset(absolutExpiration.Value));
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}
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if (evictionCallback != null)
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{
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options = options.RegisterPostEvictionCallback(new PostEvictionDelegate(evictionCallback));
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}
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_memoryCache.Set(key, value, options);
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_memoryCacheKeys.TryAdd(key, null);
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}
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private void EvictionCallback(object key, object value, EvictionReason reason, object state)
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{
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_memoryCacheKeys.TryRemove(key.ToString(), out _);
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}
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} |