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 <index/base.h>
 
#include <memory>
 
struct BlockHash;
struct TxId;
 
static constexpr bool DEFAULT_TXINDEX{false};
 
class TxIndex final : public BaseIndex {
protected:
    class DB;
 
private:
    const std::unique_ptr<DB> m_db;
 
    bool AllowPrune() const override { return false; }
 
protected:
    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 TxId &txid, BlockHash &block_hash,
                CTransactionRef &tx) const;
};
 
extern std::unique_ptr<TxIndex> g_txindex;
 
#endif // BITCOIN_INDEX_TXINDEX_H