txindex.h

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// Copyright (c) 2017-2018 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_INDEX_TXINDEX_H
#define BITCOIN_INDEX_TXINDEX_H
 
#include <chain.h>
#include <index/base.h>
#include <txdb.h>
 
class TxIndex final : public BaseIndex
{
protected:
    class DB;
 
private:
    const std::unique_ptr<DB> m_db;
 
protected:
    bool Init() override;
 
    bool WriteBlock(const CBlock& block, const CBlockIndex* pindex) override;
 
    BaseIndex::DB& GetDB() const override;
 
    const char* GetName() const override { return "txindex"; }
 
public:
    explicit TxIndex(size_t n_cache_size, bool f_memory = false, bool f_wipe = false);
 
    // Destructor is declared because this class contains a unique_ptr to an incomplete type.
    virtual ~TxIndex() override;
 
    bool FindTx(const uint256& tx_hash, uint256& block_hash, CTransactionRef& tx) const;
};
 
extern std::unique_ptr<TxIndex> g_txindex;
 
#endif // BITCOIN_INDEX_TXINDEX_H