61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
#pragma once
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#ifndef BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_DATANODESTORE_DATANODESTORE_H_
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#define BLOBSTORE_IMPLEMENTATIONS_ONBLOCKS_DATANODESTORE_DATANODESTORE_H_
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#include <memory>
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#include "messmer/cpp-utils/macros.h"
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#include "DataNodeView.h"
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#include <messmer/blockstore/utils/Key.h>
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namespace blockstore{
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class Block;
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class BlockStore;
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}
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namespace blobstore {
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namespace onblocks {
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namespace datanodestore {
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class DataNode;
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class DataLeafNode;
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class DataInnerNode;
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class DataNodeStore {
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public:
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DataNodeStore(cpputils::unique_ref<blockstore::BlockStore> blockstore, uint32_t blocksizeBytes);
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virtual ~DataNodeStore();
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static constexpr uint8_t MAX_DEPTH = 10;
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DataNodeLayout layout() const;
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boost::optional<cpputils::unique_ref<DataNode>> load(const blockstore::Key &key);
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cpputils::unique_ref<DataLeafNode> createNewLeafNode();
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cpputils::unique_ref<DataInnerNode> createNewInnerNode(const DataNode &first_child);
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cpputils::unique_ref<DataNode> createNewNodeAsCopyFrom(const DataNode &source);
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cpputils::unique_ref<DataNode> overwriteNodeWith(cpputils::unique_ref<DataNode> target, const DataNode &source);
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void remove(cpputils::unique_ref<DataNode> node);
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void removeSubtree(cpputils::unique_ref<DataNode> node);
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uint64_t numNodes() const;
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//TODO Test overwriteNodeWith(), createNodeAsCopyFrom(), removeSubtree()
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private:
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cpputils::unique_ref<DataNode> load(std::unique_ptr<blockstore::Block> block);
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cpputils::unique_ref<blockstore::BlockStore> _blockstore;
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const DataNodeLayout _layout;
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DISALLOW_COPY_AND_ASSIGN(DataNodeStore);
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};
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}
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}
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}
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#endif
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