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-BEGIN VERIFY SCRIPT- sed --in-place --regexp-extended \ 's;( 20[0-2][0-9])(-20[0-2][0-9])? The Bitcoin Core developers;\1-present The Bitcoin Core developers;g' \ $( git grep -l 'The Bitcoin Core developers' -- ':(exclude)COPYING' ':(exclude)src/ipc/libmultiprocess' ':(exclude)src/minisketch' ) -END VERIFY SCRIPT-
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
// Copyright (c) 2017-present The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_INDEX_TXINDEX_H
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#define BITCOIN_INDEX_TXINDEX_H
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#include <index/base.h>
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#include <primitives/transaction.h>
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#include <cstddef>
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#include <memory>
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class uint256;
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namespace interfaces {
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class Chain;
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}
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static constexpr bool DEFAULT_TXINDEX{false};
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/**
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* TxIndex is used to look up transactions included in the blockchain by hash.
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* The index is written to a LevelDB database and records the filesystem
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* location of each transaction by transaction hash.
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*/
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class TxIndex final : public BaseIndex
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{
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protected:
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class DB;
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private:
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const std::unique_ptr<DB> m_db;
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bool AllowPrune() const override { return false; }
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protected:
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bool CustomAppend(const interfaces::BlockInfo& block) override;
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BaseIndex::DB& GetDB() const override;
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public:
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/// Constructs the index, which becomes available to be queried.
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explicit TxIndex(std::unique_ptr<interfaces::Chain> chain, size_t n_cache_size, bool f_memory = false, bool f_wipe = false);
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// Destructor is declared because this class contains a unique_ptr to an incomplete type.
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virtual ~TxIndex() override;
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/// Look up a transaction by hash.
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///
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/// @param[in] tx_hash The hash of the transaction to be returned.
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/// @param[out] block_hash The hash of the block the transaction is found in.
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/// @param[out] tx The transaction itself.
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/// @return true if transaction is found, false otherwise
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bool FindTx(const Txid& tx_hash, uint256& block_hash, CTransactionRef& tx) const;
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};
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/// The global transaction index, used in GetTransaction. May be null.
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extern std::unique_ptr<TxIndex> g_txindex;
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#endif // BITCOIN_INDEX_TXINDEX_H
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