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/*
* Copyright (c) 2022 Vaughn Nugent
*
* Library: VNLib
* Package: SessionProvider
* File: GlobalCache.cs
*
* GlobalCache.cs is part of SessionProvider which is part of the larger
* VNLib collection of libraries and utilities.
*
* SessionProvider is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 2 of the License,
* or (at your option) any later version.
*
* SessionProvider 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with SessionProvider. If not, see http://www.gnu.org/licenses/.
*/
using System;
using System.Threading;
using System.Threading.Tasks;
//using VNLib.Data.Caching;
//using VNLib.Net.Messaging.FBM.Client;
//using VNLib.Net.Messaging.FBM.Client.Exceptions;
namespace VNLib.Plugins.Essentials.Sessions
{
/*internal class GlobalCache : IGlobalCacheProvider
{
private readonly FBMClient Client;
private readonly TimeSpan OperationTimeout;
public GlobalCache(FBMClient cacheProvider, TimeSpan cancellation)
{
this.Client = cacheProvider;
this.OperationTimeout = cancellation;
}
//If the wait handle will block, the client is connected
bool IGlobalCacheProvider.IsConnected => !Client.ConnectionStatusHandle.WaitOne(0);
async Task IGlobalCacheProvider.DeleteAsync(string key)
{
if (OperationTimeout > TimeSpan.Zero && OperationTimeout < TimeSpan.MaxValue)
{
CancellationTokenSource cts = new(OperationTimeout);
try
{
//Delete value
await Client.DeleteObjectAsync(key, cts.Token);
}
catch (FBMException fbm)
{
//Catch fbm excpetions and wrap them in global cache exception
throw new GlobalCacheException("Failed to delete cache record, see inner exception", fbm);
}
catch (OperationCanceledException)
{
throw new TimeoutException("The operation has been cancelled, due to a timeout");
}
finally
{
cts.Dispose();
}
}
else
{
try
{
//Delete value
await Client.DeleteObjectAsync(key);
}
catch (FBMException fbm)
{
//Catch fbm excpetions and wrap them in global cache exception
throw new GlobalCacheException("Failed to delete cache record, see inner exception", fbm);
}
}
}
async Task<T> IGlobalCacheProvider.GetAsync<T>(string key)
{
if (OperationTimeout > TimeSpan.Zero && OperationTimeout < TimeSpan.MaxValue)
{
CancellationTokenSource cts = new(OperationTimeout);
try
{
//Try to get the value
return await Client.GetObjectAsync<T>(key, cts.Token);
}
catch (FBMException fbm)
{
//Catch fbm excpetions and wrap them in global cache exception
throw new GlobalCacheException("Failed to delete cache record, see inner exception", fbm);
}
catch (OperationCanceledException)
{
throw new TimeoutException("The operation has been cancelled, due to a timeout");
}
finally
{
cts.Dispose();
}
}
else
{
try
{
//Try to get the value
return await Client.GetObjectAsync<T>(key);
}
catch (FBMException fbm)
{
//Catch fbm excpetions and wrap them in global cache exception
throw new GlobalCacheException("Failed to delete cache record, see inner exception", fbm);
}
}
}
async Task IGlobalCacheProvider.SetAsync<T>(string key, T value)
{
if (OperationTimeout > TimeSpan.Zero && OperationTimeout < TimeSpan.MaxValue)
{
CancellationTokenSource cts = new(OperationTimeout);
try
{
await Client.AddOrUpdateObjectAsync(key, null, value, cts.Token);
}
catch (FBMException fbm)
{
//Catch fbm excpetions and wrap them in global cache exception
throw new GlobalCacheException("Failed to delete cache record, see inner exception", fbm);
}
catch (OperationCanceledException)
{
throw new TimeoutException("The operation has been cancelled, due to a timeout");
}
finally
{
cts.Dispose();
}
}
else
{
try
{
await Client.AddOrUpdateObjectAsync(key, null, value);
}
catch (FBMException fbm)
{
//Catch fbm excpetions and wrap them in global cache exception
throw new GlobalCacheException("Failed to delete cache record, see inner exception", fbm);
}
}
}
}*/
}
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