libcryfs/src/blobstore/implementations/onblocks/datanodestore/DataLeafNode.h

#pragma once
#ifndef BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_DATANODESTORE_DATALEAFNODE_H_
#define BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_DATANODESTORE_DATALEAFNODE_H_

#include <blobstore/implementations/onblocks/datanodestore/DataNode.h>

namespace blobstore {
namespace onblocks {
namespace datanodestore {

class DataLeafNode: public DataNode {
public:
  DataLeafNode(DataNodeView block, const blockstore::Key &key, DataNodeStore *nodestorage);
  virtual ~DataLeafNode();

  static constexpr uint32_t MAX_STORED_BYTES = DataNodeView::DATASIZE_BYTES;

  void InitializeNewNode();

  void read(off_t offset, size_t count, blockstore::Data *result) const override;
  void write(off_t offset, size_t count, const blockstore::Data &data) override;

  uint64_t numBytesInThisNode() const override;
  void resize(uint64_t newsize_bytes) override;

private:
  void fillDataWithZeroesFromTo(off_t begin, off_t end);
};

}
}
}

#endif