public Task InsertOrUpdateItemAsync(string key, byte[] data, DistributedCacheEntryOptions options, CancellationToken token)
{
TableCacheEntity cacheEntity = new TableCacheEntity(_partitionKey, key, data, options);
TableOperation operation = TableOperation.InsertOrReplace(cacheEntity);
return(_cloudTable.ExecuteAsync(operation, token));
}
public void InsertOrUpdateItem(string key, byte[] data, DistributedCacheEntryOptions options)
{
TableCacheEntity cacheEntity = new TableCacheEntity(_partitionKey, key, data, options);
TableOperation operation = TableOperation.InsertOrReplace(cacheEntity);
_cloudTable.Execute(operation);
}
public async Task RemoveItemAsync(string key, CancellationToken token)
{
TableCacheEntity cacheEntity = await RetrieveItemAsync(key, token);
if (cacheEntity != null)
{
await RemoveItemAsync(cacheEntity, token);
}
}
public void RemoveItem(string key)
{
TableCacheEntity cacheEntity = RetrieveItem(key);
if (cacheEntity != null)
{
RemoveItem(cacheEntity);
}
}
public async Task RefreshAsync(string key, CancellationToken token = default)
{
if (key is null)
{
throw new ArgumentNullException(nameof(key));
}
TableCacheEntity cacheEntity = await _provider.RetrieveItemAsync(key, token);
if (cacheEntity != null)
{
await RefreshEntityAsync(cacheEntity);
}
}
public void Refresh(string key)
{
if (key is null)
{
throw new ArgumentNullException(nameof(key));
}
TableCacheEntity cacheEntity = _provider.RetrieveItem(key);
if (cacheEntity != null)
{
RefreshEntity(cacheEntity);
}
}
private bool ShouldDelete(TableCacheEntity cacheEntity)
{
DateTimeOffset currentTime = DateTimeOffset.UtcNow;
if (cacheEntity.AbsoluteExpiration.HasValue && cacheEntity.AbsoluteExpiration.Value <= currentTime)
{
return(true);
}
if (cacheEntity.SlidingExpiration.HasValue && cacheEntity.LastAccessedTime.HasValue &&
cacheEntity.LastAccessedTime.Value.Add(cacheEntity.SlidingExpiration.Value) < currentTime)
{
return(true);
}
return(false);
}
private TableCacheEntity RefreshEntity(TableCacheEntity cacheEntity)
{
if (cacheEntity is null)
{
return(null);
}
if (cacheEntity.Data is null || ShouldDelete(cacheEntity))
{
_provider.RemoveItem(cacheEntity);
return(null);
}
cacheEntity.LastAccessedTime = DateTimeOffset.UtcNow;
_provider.InsertOrUpdateItem(cacheEntity);
return(cacheEntity);
}
public async Task <byte[]> GetAsync(string key, CancellationToken token = default)
{
if (key is null)
{
throw new ArgumentNullException(nameof(key));
}
TableCacheEntity cacheEntity = await _provider.RetrieveItemAsync(key, token);
if (cacheEntity is null)
{
return(null);
}
await RefreshEntityAsync(cacheEntity);
return(cacheEntity?.Data);
}
public byte[] Get(string key)
{
if (key is null)
{
throw new ArgumentNullException(nameof(key));
}
TableCacheEntity cacheEntity = _provider.RetrieveItem(key);
if (cacheEntity is null)
{
return(null);
}
RefreshEntity(cacheEntity);
return(cacheEntity.Data);
}
private async Task <TableCacheEntity> RefreshEntityAsync(TableCacheEntity cacheEntity, CancellationToken token = default)
{
if (cacheEntity is null)
{
return(null);
}
if (cacheEntity.Data is null || ShouldDelete(cacheEntity))
{
await _provider.RemoveItemAsync(cacheEntity, token);
return(null);
}
cacheEntity.LastAccessedTime = DateTimeOffset.UtcNow;
await _provider.InsertOrUpdateItemAsync(cacheEntity, token);
return(cacheEntity);
}
public Task RemoveItemAsync(TableCacheEntity entity, CancellationToken token)
{
TableOperation operation = TableOperation.Delete(entity);
return(_cloudTable.ExecuteAsync(operation));
}
public void RemoveItem(TableCacheEntity entity)
{
TableOperation operation = TableOperation.Delete(entity);
_cloudTable.Execute(operation);
}
public Task InsertOrUpdateItemAsync(TableCacheEntity entity, CancellationToken token)
{
TableOperation operation = TableOperation.InsertOrReplace(entity);
return(_cloudTable.ExecuteAsync(operation, token));
}
public void InsertOrUpdateItem(TableCacheEntity entity)
{
TableOperation operation = TableOperation.InsertOrReplace(entity);
_cloudTable.Execute(operation);
}