private PersistenceResponseHolder <E> PersistenceResponseFormat(StorageResponseHolder result)
{
if (result.IsSuccess)
{
if (result.Content != null)
{
return new PersistenceResponseHolder <E>()
{
StatusCode = result.StatusCode, Content = result.Content, IsSuccess = true, Entity = mTransform.PersistenceEntitySerializer.Deserializer(result.Content), VersionId = result.VersionId
}
}
;
else
{
return new PersistenceResponseHolder <E>()
{
StatusCode = result.StatusCode, IsSuccess = true, VersionId = result.VersionId
}
};
}
else
{
return new PersistenceResponseHolder <E>()
{
StatusCode = result.IsTimeout ? 504 : result.StatusCode, IsSuccess = false, IsTimeout = result.IsTimeout
}
};
}
/// <summary>
/// This is wrapper class that provides generic exception handling support
/// and retrieves the standard metadata for each request.
/// </summary>
/// <param name="rq">The request.</param>
/// <param name="rs">The response.</param>
/// <param name="action">The async action task.</param>
/// <returns>Returns a task with the response.</returns>
protected async Task <StorageResponseHolder> CallCloudBlockBlob(StorageRequestHolder rq
, Func <StorageRequestHolder, StorageResponseHolder, bool, Task> action)
{
int start = StatisticsInternal.ActiveIncrement();
var rs = new StorageResponseHolder();
try
{
var refEntityDirectory = mEntityContainer.GetDirectoryReference(rq.Directory);
rq.Blob = refEntityDirectory.GetBlockBlobReference(rq.SafeKey);
bool exists = await rq.Blob.ExistsAsync(rq.CancelSet);
if (exists)
{
MetadataGet(rq.Blob, rq);
exists ^= rq.IsDeleted;
}
await action(rq, rs, exists);
}
catch (StorageException sex)
{
rs.Ex = sex;
rs.IsSuccess = false;
rs.StatusCode = sex.RequestInformation.HttpStatusCode;
rs.IsTimeout = rs.StatusCode == 500 || rs.StatusCode == 503;
}
catch (TaskCanceledException tcex)
{
rs.Ex = tcex;
rs.IsTimeout = true;
rs.IsSuccess = false;
rs.StatusCode = 502;
}
catch (Exception ex)
{
rs.Ex = ex;
rs.IsSuccess = false;
rs.StatusCode = 500;
}
finally
{
if (!rs.IsSuccess)
{
StatisticsInternal.ErrorIncrement();
}
StatisticsInternal.ActiveDecrement(start);
}
return(rs);
}
