110 lines
3.2 KiB
C#
110 lines
3.2 KiB
C#
/*
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*
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* (c) Copyright Ascensio System Limited 2010-2021
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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using System;
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using System.Collections.Concurrent;
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using System.Linq;
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using System.Threading.Tasks;
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using Google.Protobuf;
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using StackExchange.Redis.Extensions.Core.Abstractions;
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namespace ASC.Common.Caching;
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[Singletone]
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public class RedisCache<T> : ICacheNotify<T> where T : IMessage<T>, new()
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{
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private readonly string CacheId = Guid.NewGuid().ToString();
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private readonly IRedisDatabase _redis;
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private readonly ConcurrentDictionary<Type, ConcurrentBag<Action<object, CacheNotifyAction>>> actions = new ConcurrentDictionary<Type, ConcurrentBag<Action<object, CacheNotifyAction>>>();
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public RedisCache(IRedisCacheClient redisCacheClient)
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{
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_redis = redisCacheClient.GetDbFromConfiguration();
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}
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public void Publish(T obj, CacheNotifyAction action)
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{
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Task.Run(() => _redis.PublishAsync("asc:channel:" + typeof(T).FullName, new RedisCachePubSubItem<T>() { CacheId = CacheId, Object = obj, Action = action }))
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.GetAwaiter()
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.GetResult();
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ConcurrentBag<Action<object, CacheNotifyAction>> onchange;
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actions.TryGetValue(typeof(T), out onchange);
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if (onchange != null)
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{
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onchange.ToList().ForEach(r => r(obj, action));
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}
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}
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public void Subscribe(Action<T> onchange, CacheNotifyAction action)
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{
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Task.Run(() => _redis.SubscribeAsync<RedisCachePubSubItem<T>>("asc:channel:" + typeof(T).FullName, (i) =>
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{
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if (i.CacheId != CacheId)
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{
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onchange(i.Object);
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}
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return Task.FromResult(true);
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})).GetAwaiter()
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.GetResult();
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if (onchange != null)
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{
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Action<object, CacheNotifyAction> _action = (o, a) => onchange((T)o);
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actions.AddOrUpdate(typeof(T),
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new ConcurrentBag<Action<object, CacheNotifyAction>> { _action },
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(type, bag) =>
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{
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bag.Add(_action);
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return bag;
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});
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}
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else
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{
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ConcurrentBag<Action<object, CacheNotifyAction>> removed;
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actions.TryRemove(typeof(T), out removed);
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}
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}
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public void Unsubscribe(CacheNotifyAction action)
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{
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Task.Run(() => _redis.UnsubscribeAsync<RedisCachePubSubItem<T>>("asc:channel:" + typeof(T).FullName, (i) =>
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{
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return Task.FromResult(true);
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})).GetAwaiter()
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.GetResult();
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}
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class RedisCachePubSubItem<T0>
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{
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public string CacheId { get; set; }
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public T0 Object { get; set; }
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public CacheNotifyAction Action { get; set; }
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}
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}
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