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2e2a7509cd
* Tweak account XRP balance and sequence if needed before preclaim. * Limit total fees in flight to minimum reserve / account balance. * LastLedgerSequence must be at least 2 more than the current ledger to be queued. * Limit 10 transactions per account in the queue at a time. * Limit queuing multiple transactions after transactions that affect authentication. * Zero base fee transactions are treated as having a fixed fee level of 256000 instead of infinite. * Full queue: new txn can only kick out a tx if the fee is higher than that account's average fee. * Queued tx retry limit prevents indefinitely stuck txns. * Return escalation factors in server_info and _state when escalated. * Update documentation. * Update experimental config to only include the % increase. * Convert TxQ metric magic numbers to experimental config.
140 lines
4.3 KiB
C++
140 lines
4.3 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_CORE_LOADFEETRACK_H_INCLUDED
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#define RIPPLE_CORE_LOADFEETRACK_H_INCLUDED
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#include <ripple/json/json_value.h>
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#include <ripple/beast/utility/Journal.h>
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#include <algorithm>
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#include <cstdint>
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#include <mutex>
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namespace ripple {
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/** Manages the current fee schedule.
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The "base" fee is the cost to send a reference transaction under no load,
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expressed in millionths of one XRP.
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The "load" fee is how much the local server currently charges to send a
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reference transaction. This fee fluctuates based on the load of the
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server.
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*/
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// VFALCO TODO Rename "load" to "current".
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class LoadFeeTrack
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{
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public:
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explicit LoadFeeTrack (beast::Journal journal = beast::Journal())
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: m_journal (journal)
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, mLocalTxnLoadFee (lftNormalFee)
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, mRemoteTxnLoadFee (lftNormalFee)
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, mClusterTxnLoadFee (lftNormalFee)
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, raiseCount (0)
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{
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}
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virtual ~LoadFeeTrack () { }
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// Scale from fee units to millionths of a ripple
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std::uint64_t scaleFeeBase (std::uint64_t fee, std::uint64_t baseFee,
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std::uint32_t referenceFeeUnits) const;
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// Scale using load as well as base rate
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std::uint64_t scaleFeeLoad (std::uint64_t fee, std::uint64_t baseFee,
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std::uint32_t referenceFeeUnits, bool bUnlimited) const;
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void setRemoteFee (std::uint32_t f)
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{
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ScopedLockType sl (mLock);
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mRemoteTxnLoadFee = f;
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}
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std::uint32_t getRemoteFee () const
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{
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ScopedLockType sl (mLock);
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return mRemoteTxnLoadFee;
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}
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std::uint32_t getLocalFee () const
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{
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ScopedLockType sl (mLock);
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return mLocalTxnLoadFee;
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}
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std::uint32_t getClusterFee () const
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{
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ScopedLockType sl (mLock);
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return mClusterTxnLoadFee;
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}
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std::uint32_t getLoadBase () const
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{
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return lftNormalFee;
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}
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std::uint32_t getLoadFactor () const
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{
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ScopedLockType sl (mLock);
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return std::max({ mClusterTxnLoadFee, mLocalTxnLoadFee, mRemoteTxnLoadFee });
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}
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void setClusterFee (std::uint32_t fee)
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{
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ScopedLockType sl (mLock);
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mClusterTxnLoadFee = fee;
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}
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bool raiseLocalFee ();
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bool lowerLocalFee ();
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bool isLoadedLocal () const
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{
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ScopedLockType sl (mLock);
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return (raiseCount != 0) || (mLocalTxnLoadFee != lftNormalFee);
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}
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bool isLoadedCluster () const
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{
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ScopedLockType sl (mLock);
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return (raiseCount != 0) || (mLocalTxnLoadFee != lftNormalFee) || (mClusterTxnLoadFee != lftNormalFee);
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}
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private:
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static const int lftNormalFee = 256; // 256 is the minimum/normal load factor
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static const int lftFeeIncFraction = 4; // increase fee by 1/4
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static const int lftFeeDecFraction = 4; // decrease fee by 1/4
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static const int lftFeeMax = lftNormalFee * 1000000;
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beast::Journal m_journal;
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using LockType = std::mutex;
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using ScopedLockType = std::lock_guard <LockType>;
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LockType mutable mLock;
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std::uint32_t mLocalTxnLoadFee; // Scale factor, lftNormalFee = normal fee
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std::uint32_t mRemoteTxnLoadFee; // Scale factor, lftNormalFee = normal fee
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std::uint32_t mClusterTxnLoadFee; // Scale factor, lftNormalFee = normal fee
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int raiseCount;
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};
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} // ripple
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#endif
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