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1// Copyright (c) The Bitcoin Core developers
2// Distributed under the MIT software license. See the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#ifndef BITCOIN_POLICY_FEES_ESTIMATOR_MAN_H
6#define BITCOIN_POLICY_FEES_ESTIMATOR_MAN_H
7
8#include <policy/fees/block_policy_estimator.h>
9#include <policy/fees/mempool_estimator.h>
10#include <primitives/transaction.h>
11#include <util/expected.h>
12#include <util/fees.h>
13#include <util/fs.h>
14#include <validationinterface.h>
15
16#include <chrono>
17#include <memory>
18
19class CFeeRate;
20class ChainstateManager;
21class CTxMemPool;
22class MemPoolFeeRateEstimator;
23
24// How often to flush data to disk
25inline constexpr std::chrono::hours FEE_FLUSH_INTERVAL{1};
26
27/** \class FeeRateEstimatorManager
28 * Manages fee rate estimators.
29 */
30class FeeRateEstimatorManager : public CValidationInterface
31{
32public:
33    /**
34     * @param[in] block_policy_path    Path to the block policy fee estimates file.
35     * @param[in] read_stale_estimates Whether to load stale estimates from disk.
36     * @param[in] mempool_estimator_path Path to the mempool policy estimator data file.
37     * @param[in] mempool              The mempool to use for the mempool fee rate estimator.
38     * @param[in] chainman             The chainstate manager.
39     */
40    FeeRateEstimatorManager(const fs::path& block_policy_path,
41                            bool read_stale_estimates,
42                            const fs::path& mempool_estimator_path,
43                            const CTxMemPool& mempool,
44                            ChainstateManager& chainman);
45
46    virtual ~FeeRateEstimatorManager();
47
48    /**
49     * @brief Get a combined fee rate estimate from the available fee rate estimators.
50     * Combines both estimators, returning the lower of the block policy and mempool fee rate
51     * estimates. If the mempool fee rate estimator cannot produce an estimate, the block policy fee
52     * rate estimate is returned instead. An error is returned only if the block policy fee rate
53     * estimate is unavailable.
54     * @param[in] target The target within which the transaction should be confirmed.
55     * @param[in] conservative Whether to select a more conservative, potentially higher, fee rate estimate.
56     * @return fee rate estimation, or an error on failure.
57     */
58    virtual util::Expected<FeeRateEstimation, FeeRateEstimationError> GetFeeRateEstimate(int target, bool conservative) const;
59
60    /**
61     * Like GetFeeRateEstimate, but only consults the specified estimator type.
62     * @param[in] type The estimator to query. AUTO returns the manager-selected combined estimate.
63     * @param[in] target The target within which the transaction should be confirmed.
64     * @param[in] conservative Whether to select a more conservative, potentially higher, fee rate estimate.
65     * @return Fee rate estimation from the specified estimator, or an error on failure.
66     */
67    virtual util::Expected<FeeRateEstimation, FeeRateEstimationError> GetFeeRateEstimate(FeeRateEstimatorType type, int target, bool conservative) const;
68
69    /** Flush recorded data to disk. */
70    void IntervalFlush();
71
72    /** Flush recorded data to disk as part of shutdown sequence. */
73    void ShutdownFlush();
74
75    /**
76     * Called when the mempool was not loaded from disk (the load failed, there was no
77     * mempool file, or -persistmempool=0), unless loading was interrupted by shutdown.
78     */
79    void MempoolLoadFailed();
80
81    /**
82     * @brief Returns the maximum supported confirmation target from all fee rate estimators.
83     */
84    virtual unsigned int MaximumTarget() const;
85
86    /**
87     * @brief Delegate to the block policy estimator's estimateRawFee (used by the estimaterawfee RPC).
88     */
89    CFeeRate BlockPolicyEstimateRawFee(unsigned int target, double threshold, FeeEstimateHorizon horizon, EstimationResult* buckets) const;
90
91    /**
92     * @brief Returns the maximum supported confirmation target of block policy estimator.
93     */
94    unsigned int BlockPolicyHighestTargetTracked(FeeEstimateHorizon horizon) const;
95
96    /**
97     * Returns per-block weight statistics for the last MEMPOOL_HEALTH_WINDOW_BLOCKS mined blocks.
98     */
99    std::vector<MinedBlockStats> MempoolPolicyEstimatorBlocksStats() const;
100
101protected:
102    /** Overridden from CValidationInterface. */
103    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t /*unused*/) override;
104    void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason /*unused*/, uint64_t /*unused*/) override;
105    void MempoolTransactionsRemovedForBlock(const std::shared_ptr<const CBlock>& block, const std::vector<RemovedMempoolTransactionInfo>& txs_removed_for_block, unsigned int block_height) override;
106
107private:
108    std::unique_ptr<CBlockPolicyEstimator> m_block_policy_estimator;
109    std::unique_ptr<MemPoolFeeRateEstimator> m_mempool_estimator;
110};
111
112#endif // BITCOIN_POLICY_FEES_ESTIMATOR_MAN_H
113

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

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