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src/index/base.h
- This file was copied from src/index/txindex.h.
// Copyright (c) 2017-2018 The Bitcoin Core developers | // Copyright (c) 2017-2018 The Bitcoin Core developers | ||||
// Distributed under the MIT software license, see the accompanying | // Distributed under the MIT software license, see the accompanying | ||||
// file COPYING or http://www.opensource.org/licenses/mit-license.php. | // file COPYING or http://www.opensource.org/licenses/mit-license.php. | ||||
#ifndef BITCOIN_INDEX_TXINDEX_H | #ifndef BITCOIN_INDEX_BASE_H | ||||
#define BITCOIN_INDEX_TXINDEX_H | #define BITCOIN_INDEX_BASE_H | ||||
#include <primitives/block.h> | #include <primitives/block.h> | ||||
#include <primitives/transaction.h> | #include <primitives/transaction.h> | ||||
#include <threadinterrupt.h> | #include <threadinterrupt.h> | ||||
#include <txdb.h> | #include <txdb.h> | ||||
#include <uint256.h> | #include <uint256.h> | ||||
#include <validationinterface.h> | #include <validationinterface.h> | ||||
▲ Show 20 Lines • Show All 64 Lines • ▼ Show 20 Lines | public: | ||||
/// Start initializes the sync state and registers the instance as a | /// Start initializes the sync state and registers the instance as a | ||||
/// ValidationInterface so that it stays in sync with blockchain updates. | /// ValidationInterface so that it stays in sync with blockchain updates. | ||||
void Start(); | void Start(); | ||||
/// Stops the instance from staying in sync with blockchain updates. | /// Stops the instance from staying in sync with blockchain updates. | ||||
void Stop(); | void Stop(); | ||||
}; | }; | ||||
/** | #endif // BITCOIN_INDEX_BASE_H | ||||
* TxIndex is used to look up transactions included in the blockchain by hash. | |||||
* The index is written to a LevelDB database and records the filesystem | |||||
* location of each transaction by transaction hash. | |||||
*/ | |||||
class TxIndex final : public BaseIndex { | |||||
private: | |||||
const std::unique_ptr<TxIndexDB> m_db; | |||||
protected: | |||||
/// Override base class init to migrate from old database. | |||||
bool Init() override; | |||||
bool WriteBlock(const CBlock &block, const CBlockIndex *pindex) override; | |||||
BaseIndexDB &GetDB() const override; | |||||
const char *GetName() const override { return "txindex"; } | |||||
public: | |||||
/// Constructs the index, which becomes available to be queried. | |||||
explicit TxIndex(std::unique_ptr<TxIndexDB> db); | |||||
/// Look up a transaction by hash. | |||||
/// | |||||
/// @param[in] tx_hash The hash of the transaction to be returned. | |||||
/// @param[out] block_hash The hash of the block the transaction is found | |||||
/// in. | |||||
/// @param[out] tx The transaction itself. | |||||
/// @return true if transaction is found, false otherwise | |||||
bool FindTx(const uint256 &tx_hash, uint256 &block_hash, | |||||
CTransactionRef &tx) const; | |||||
}; | |||||
/// The global transaction index, used in GetTransaction. May be null. | |||||
extern std::unique_ptr<TxIndex> g_txindex; | |||||
#endif // BITCOIN_INDEX_TXINDEX_H |