mirror of
https://github.com/ton-blockchain/ton
synced 2025-03-09 15:40:10 +00:00
c863c42ed1
- thread safe cache - parallel commit - multiple optimizations - support of key-value merge operations - improved tests and benchmarks - in-memory version won't read from key value after start - uses vector in-memory table now - use rocksdb::WALRecoveryMode::kTolerateCorruptedTailRecords - do not silently ignore errors during recovery
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2020 Telegram Systems LLP
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*/
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#pragma once
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#include "td/db/KeyValue.h"
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#include "vm/db/DynamicBagOfCellsDb.h"
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#include "vm/cells.h"
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#include "td/utils/Slice.h"
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#include "td/utils/Status.h"
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namespace vm {
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using KeyValue = td::KeyValue;
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using KeyValueReader = td::KeyValueReader;
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class CellLoader {
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public:
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struct LoadResult {
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public:
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enum { Ok, NotFound } status{NotFound};
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Ref<DataCell> &cell() {
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DCHECK(status == Ok);
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return cell_;
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}
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td::int32 refcnt() const {
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return refcnt_;
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}
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Ref<DataCell> cell_;
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td::int32 refcnt_{0};
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bool stored_boc_{false};
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};
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CellLoader(std::shared_ptr<KeyValueReader> reader, std::function<void(const LoadResult &)> on_load_callback = {});
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td::Result<LoadResult> load(td::Slice hash, bool need_data, ExtCellCreator &ext_cell_creator);
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static td::Result<LoadResult> load(td::Slice hash, td::Slice value, bool need_data, ExtCellCreator &ext_cell_creator);
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td::Result<LoadResult> load_refcnt(td::Slice hash); // This only loads refcnt_, cell_ == null
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KeyValueReader &key_value_reader() const {
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return *reader_;
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}
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private:
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std::shared_ptr<KeyValueReader> reader_;
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std::function<void(const LoadResult &)> on_load_callback_;
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};
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class CellStorer {
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public:
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CellStorer(KeyValue &kv);
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td::Status erase(td::Slice hash);
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td::Status set(td::int32 refcnt, const td::Ref<DataCell> &cell, bool as_boc);
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td::Status merge(td::Slice hash, td::int32 refcnt_diff);
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static void merge_value_and_refcnt_diff(std::string &value, td::Slice right);
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static void merge_refcnt_diffs(std::string &left, td::Slice right);
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static std::string serialize_refcnt_diffs(td::int32 refcnt_diff);
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static std::string serialize_value(td::int32 refcnt, const td::Ref<DataCell> &cell, bool as_boc);
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struct Diff {
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enum Type { Set, Erase, Merge } type{Set};
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CellHash key;
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std::string value{};
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};
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td::Status apply_diff(const Diff &diff);
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struct MetaDiff {
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enum Type { Set, Erase } type{Set};
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std::string key;
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std::string value{};
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};
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td::Status apply_meta_diff(const MetaDiff &diff);
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private:
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KeyValue &kv_;
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};
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} // namespace vm
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