/// <summary>
/// Gets the object from the cache
/// </summary>
/// <param name="key">Key of object to get</param>
/// <returns>Cached object</returns>
public object Get(object key)
{
if (key == null)
{
return(null);
}
try
{
var value = Cache.Get(key.ToString(), _appFabricRegionName);
return(value == null ? null : AppFabricCacheOptimizer.Decompress((byte[])value));
}
catch (DataCacheException ex)
{
if (IsRegionAbsent(ex))
{
//Skip this exception since we don't create regions for all entities by default, but only when it's required.
}
else if (IsNotCritical(ex))
{
_log.Warn(ex.Message, ex);
}
else
{
_log.Error(ex.Message, ex);
}
return(null);
}
}
/// <summary>
/// Caches an item.
/// If the region in which the item should be cached doesn't exist, it will be created.
/// </summary>
/// <param name="key">The key for the item to be cached.</param>
/// <param name="value">The item to be cached.</param>
/// <param name="createMissingRegion">A flag to determine whether or not the cache region should be created if it
/// doesn't exist.</param>
private void Put(object key, object value, bool createMissingRegion)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
try
{
var optimizedValue = AppFabricCacheOptimizer.Compress(value);
//Entity cache is locked
if (_lockHandles.ContainsKey(key.ToString()))
{
if (_expirationTimeout.HasValue)
{
Cache.PutAndUnlock(key.ToString(), optimizedValue, _lockHandles[key.ToString()], TimeSpan.FromMilliseconds(_expirationTimeout.Value), _appFabricRegionName);
}
else
{
Cache.PutAndUnlock(key.ToString(), optimizedValue, _lockHandles[key.ToString()], _appFabricRegionName);
}
lock (_lockHandles)
{
_lockHandles.Remove(key.ToString());
}
}
//Entity cache isn't locked
else
{
if (_expirationTimeout.HasValue)
{
Cache.Put(key.ToString(), optimizedValue, TimeSpan.FromMilliseconds(_expirationTimeout.Value), _appFabricRegionName);
}
else
{
Cache.Put(key.ToString(), optimizedValue, _appFabricRegionName);
}
}
}
catch (DataCacheException ex)
{
if (IsRegionAbsent(ex) && createMissingRegion)
{
CreateRegionAndTryAgain(x => Put(key, value, false));
}
else if (IsNotCritical(ex) || ex.ErrorCode == DataCacheErrorCode.ObjectLocked)
{
_log.Warn(ex.Message, ex);
}
else
{
_log.Error(ex.Message, ex);
}
}
}
