DocSpace-client/common/ASC.VoipService/Dao/CachedVoipDao.cs

/*
 *
 * (c) Copyright Ascensio System Limited 2010-2018
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 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
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 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
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*/


using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;

using ASC.Common;
using ASC.Common.Caching;
using ASC.Core;
using ASC.Core.Common;
using ASC.Core.Common.Configuration;
using ASC.Core.Common.EF;
using ASC.Core.Common.EF.Context;
using ASC.Core.Tenants;

namespace ASC.VoipService.Dao
{
    public class VoipDaoCache
    {
        public ICache Cache { get; }
        private ICacheNotify<CachedVoipItem> Notify { get; }

        public VoipDaoCache(ICacheNotify<CachedVoipItem> notify)
        {
            Cache = AscCache.Memory;
            Notify = notify;
            Notify.Subscribe((c) => Cache.Remove(CachedVoipDao.GetCacheKey(c.Tenant)), CacheNotifyAction.Any);
        }

        public void ResetCache(int tenant)
        {
            Notify.Publish(new CachedVoipItem { Tenant = tenant }, CacheNotifyAction.Any);
        }
    }

    public class CachedVoipDao : VoipDao
    {
        private readonly ICache cache;
        private static readonly TimeSpan timeout = TimeSpan.FromDays(1);

        private VoipDaoCache VoipDaoCache { get; }

        public CachedVoipDao(
            TenantManager tenantManager,
            DbContextManager<VoipDbContext> dbOptions,
            AuthContext authContext,
            TenantUtil tenantUtil,
            SecurityContext securityContext,
            BaseCommonLinkUtility baseCommonLinkUtility,
            ConsumerFactory consumerFactory,
            VoipDaoCache voipDaoCache)
            : base(tenantManager, dbOptions, authContext, tenantUtil, securityContext, baseCommonLinkUtility, consumerFactory)
        {
            cache = voipDaoCache.Cache;
            VoipDaoCache = voipDaoCache;
        }

        public override VoipPhone SaveOrUpdateNumber(VoipPhone phone)
        {
            var result = base.SaveOrUpdateNumber(phone);
            VoipDaoCache.ResetCache(TenantID);
            return result;
        }

        public override void DeleteNumber(string phoneId = "")
        {
            base.DeleteNumber(phoneId);
            VoipDaoCache.ResetCache(TenantID);
        }

        public override IEnumerable<VoipPhone> GetNumbers(params string[] ids)
        {
            var numbers = cache.Get<List<VoipPhone>>(GetCacheKey(TenantID));
            if (numbers == null)
            {
                numbers = new List<VoipPhone>(base.GetNumbers());
                cache.Insert(GetCacheKey(TenantID), numbers, DateTime.UtcNow.Add(timeout));
            }

            return ids.Any() ? numbers.Where(r => ids.Contains(r.Id) || ids.Contains(r.Number)).ToList() : numbers;
        }

        public static string GetCacheKey(int tenant)
        {
            return "voip" + tenant.ToString(CultureInfo.InvariantCulture);
        }
    }

    public static class VoipDaoExtention
    {
        public static DIHelper AddVoipDaoService(this DIHelper services)
        {
            if (services.TryAddScoped<VoipDao, CachedVoipDao>())
            {
                services.TryAddSingleton<VoipDaoCache>();

                return services
                    .AddDbContextManagerService<VoipDbContext>()
                    .AddAuthContextService()
                    .AddTenantUtilService()
                    .AddSecurityContextService()
                    .AddBaseCommonLinkUtilityService()
                    .AddConsumerFactoryService();
            }

            return services;
        }
    }
}