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