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// Copyright (c) 2017-2020 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_RPC_BLOCKCHAIN_H
#define BITCOIN_RPC_BLOCKCHAIN_H
#include <amount.h>
#include <core_io.h>
#include <streams.h>
#include <sync.h>
#include <stdint.h>
#include <vector>
extern RecursiveMutex cs_main;
class CBlock;
class CBlockIndex;
class CBlockPolicyEstimator;
class CChainState;
class CTxMemPool;
class ChainstateManager;
class UniValue;
struct NodeContext;
namespace util {
class Ref;
} // namespace util
static constexpr int NUM_GETBLOCKSTATS_PERCENTILES = 5;
/**
* Get the difficulty of the net wrt to the given block index.
*
* @return A floating point number that is a multiple of the main net minimum
* difficulty (4295032833 hashes).
*/
double GetDifficulty(const CBlockIndex* blockindex);
/** Callback for when block tip changed. */
void RPCNotifyBlockChange(const CBlockIndex*);
/** Block description to JSON */
UniValue blockToJSON(const CBlock& block, const CBlockIndex* tip, const CBlockIndex* blockindex, bool txDetails = false) LOCKS_EXCLUDED(cs_main);
/** Mempool information to JSON */
UniValue MempoolInfoToJSON(const CTxMemPool& pool);
/** Mempool to JSON */
UniValue MempoolToJSON(const CTxMemPool& pool, bool verbose = false, bool include_mempool_sequence = false);
/** Block header to JSON */
UniValue blockheaderToJSON(const CBlockIndex* tip, const CBlockIndex* blockindex) LOCKS_EXCLUDED(cs_main);
/** Used by getblockstats to get feerates at different percentiles by weight */
void CalculatePercentilesByWeight(CAmount result[NUM_GETBLOCKSTATS_PERCENTILES], std::vector<std::pair<CAmount, int64_t>>& scores, int64_t total_weight);
void ScriptPubKeyToUniv(const CScript& scriptPubKey, UniValue& out, bool fIncludeHex);
void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry, bool include_hex = true, int serialize_flags = 0, const CTxUndo* txundo = nullptr);
NodeContext& EnsureNodeContext(const util::Ref& context);
CTxMemPool& EnsureMemPool(const util::Ref& context);
ChainstateManager& EnsureChainman(const util::Ref& context);
CBlockPolicyEstimator& EnsureFeeEstimator(const util::Ref& context);
/**
* Helper to create UTXO snapshots given a chainstate and a file handle.
* @return a UniValue map containing metadata about the snapshot.
*/
UniValue CreateUTXOSnapshot(NodeContext& node, CChainState& chainstate, CAutoFile& afile);
#endif
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