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/*
* Copyright (c) 2023 Vaughn Nugent
*
* Library: VNLib
* Package: VNLib.Plugins.Extensions.VNCache
* File: VnGlobalCache.cs
*
* VnGlobalCache.cs is part of VNLib.Plugins.Extensions.VNCache which is part of the larger
* VNLib collection of libraries and utilities.
*
* VNLib.Plugins.Extensions.VNCache is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* VNLib.Plugins.Extensions.VNCache is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see https://www.gnu.org/licenses/.
*/
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;
using VNLib.Data.Caching;
using VNLib.Plugins.Extensions.Loading;
namespace VNLib.Plugins.Extensions.VNCache
{
/// <summary>
/// A wrapper to simplify a shared global cache client
/// </summary>
[ConfigurationName(VNCacheExtensions.CACHE_CONFIG_KEY)]
public sealed class VnGlobalCache : IGlobalCacheProvider
{
private readonly IGlobalCacheProvider _client;
/// <summary>
/// Initializes an emtpy client wrapper that still requires
/// configuration loading
/// </summary>
public VnGlobalCache(PluginBase pbase, IConfigScope config)
{
if (config.TryGetValue(VNCacheExtensions.MEMORY_CACHE_CONFIG_KEY, out _))
{
//Check for memory only flag
if (config.TryGetValue(VNCacheExtensions.MEMORY_CACHE_ONLY_KEY, out JsonElement memOnly) && memOnly.GetBoolean())
{
//Create a memory-only cache
_client = pbase.GetOrCreateSingleton<MemoryCache>();
}
else
{
//Remote-backed memory cache
_client = pbase.GetOrCreateSingleton<RemoteBackedMemoryCache>();
}
}
else
{
//Setup non-memory backed cache client
_client = pbase.GetOrCreateSingleton<VnCacheClient>();
}
}
///<inheritdoc/>
public bool IsConnected => _client.IsConnected;
///<inheritdoc/>
public Task AddOrUpdateAsync<T>(string key, string? newKey, T value, CancellationToken cancellation)
{
return _client.AddOrUpdateAsync(key, newKey, value, cancellation);
}
///<inheritdoc/>
public Task AddOrUpdateAsync<T>(string key, string? newKey, T value, ICacheObjectSerialzer serialzer, CancellationToken cancellation)
{
return _client.AddOrUpdateAsync(key, newKey, value, serialzer, cancellation);
}
///<inheritdoc/>
public Task DeleteAsync(string key, CancellationToken cancellation)
{
return _client.DeleteAsync(key, cancellation);
}
///<inheritdoc/>
public Task<T?> GetAsync<T>(string key, CancellationToken cancellation)
{
return _client.GetAsync<T>(key, cancellation);
}
///<inheritdoc/>
public Task<T?> GetAsync<T>(string key, ICacheObjectDeserialzer deserializer, CancellationToken cancellation)
{
return _client.GetAsync<T>(key, deserializer, cancellation);
}
}
}
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