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Transaction queue and fee escalation (RIPD-598):
The first few transactions are added to the open ledger at the base fee (ie. 10 drops). Once enough transactions are added, the required fee will jump dramatically. If additional transactions are added, the fee will grow exponentially. Transactions that don't have a high enough fee to be applied to the ledger are added to the queue in order from highest fee to lowest. Whenever a new ledger is accepted as validated, transactions are first applied from the queue to the open ledger in fee order until either all transactions are applied or the fee again jumps too high for the remaining transactions. Current implementation is restricted to one transaction in the queue per account. Some groundwork has been laid to expand in the future. Note that this fee logic escalates independently of the load-based fee logic (ie. LoadFeeTrack). Submitted transactions must meet the load fee to be considered for the queue, and must meet both fees to be put into open ledger.
This commit is contained in:
Edward Hennis
294
src/ripple/app/tx/impl/applySteps.cpp
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294
src/ripple/app/tx/impl/applySteps.cpp
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//------------------------------------------------------------------------------
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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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#include <BeastConfig.h>
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#include <ripple/app/tx/applySteps.h>
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#include <ripple/app/tx/impl/ApplyContext.h>
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#include <ripple/app/tx/impl/CancelOffer.h>
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#include <ripple/app/tx/impl/CancelTicket.h>
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#include <ripple/app/tx/impl/Change.h>
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#include <ripple/app/tx/impl/CreateOffer.h>
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#include <ripple/app/tx/impl/CreateTicket.h>
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#include <ripple/app/tx/impl/Payment.h>
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#include <ripple/app/tx/impl/SetAccount.h>
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#include <ripple/app/tx/impl/SetRegularKey.h>
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#include <ripple/app/tx/impl/SetSignerList.h>
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#include <ripple/app/tx/impl/SetTrust.h>
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#include <ripple/app/tx/impl/SusPay.h>
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namespace ripple {
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static
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TER
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invoke_preflight (PreflightContext const& ctx)
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{
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switch(ctx.tx.getTxnType())
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{
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case ttACCOUNT_SET: return SetAccount ::preflight(ctx);
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case ttOFFER_CANCEL: return CancelOffer ::preflight(ctx);
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case ttOFFER_CREATE: return CreateOffer ::preflight(ctx);
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case ttPAYMENT: return Payment ::preflight(ctx);
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case ttSUSPAY_CREATE: return SusPayCreate ::preflight(ctx);
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case ttSUSPAY_FINISH: return SusPayFinish ::preflight(ctx);
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case ttSUSPAY_CANCEL: return SusPayCancel ::preflight(ctx);
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case ttREGULAR_KEY_SET: return SetRegularKey ::preflight(ctx);
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case ttSIGNER_LIST_SET: return SetSignerList ::preflight(ctx);
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case ttTICKET_CANCEL: return CancelTicket ::preflight(ctx);
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case ttTICKET_CREATE: return CreateTicket ::preflight(ctx);
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case ttTRUST_SET: return SetTrust ::preflight(ctx);
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case ttAMENDMENT:
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case ttFEE: return Change ::preflight(ctx);
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default:
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assert(false);
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return temUNKNOWN;
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}
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}
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/* invoke_preclaim<T> uses name hiding to accomplish
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compile-time polymorphism of (presumably) static
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class functions for Transactor and derived classes.
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*/
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template<class T>
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static
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std::pair<TER, std::uint64_t>
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invoke_preclaim(PreclaimContext const& ctx)
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{
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// If the transactor requires a valid account and the transaction doesn't
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// list one, preflight will have already a flagged a failure.
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auto const id = ctx.tx.getAccountID(sfAccount);
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auto const baseFee = T::calculateBaseFee(ctx);
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TER result;
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if (id != zero)
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{
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result = T::checkSeq(ctx);
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if (result != tesSUCCESS)
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return { result, baseFee };
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result = T::checkFee(ctx, baseFee);
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if (result != tesSUCCESS)
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return { result, baseFee };
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result = T::checkSign(ctx);
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if (result != tesSUCCESS)
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return { result, baseFee };
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result = T::preclaim(ctx);
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if (result != tesSUCCESS)
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return{ result, baseFee };
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}
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else
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{
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result = tesSUCCESS;
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}
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return { tesSUCCESS, baseFee };
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}
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static
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std::pair<TER, std::uint64_t>
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invoke_preclaim (PreclaimContext const& ctx)
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{
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switch(ctx.tx.getTxnType())
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{
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case ttACCOUNT_SET: return invoke_preclaim<SetAccount>(ctx);
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case ttOFFER_CANCEL: return invoke_preclaim<CancelOffer>(ctx);
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case ttOFFER_CREATE: return invoke_preclaim<CreateOffer>(ctx);
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case ttPAYMENT: return invoke_preclaim<Payment>(ctx);
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case ttSUSPAY_CREATE: return invoke_preclaim<SusPayCreate>(ctx);
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case ttSUSPAY_FINISH: return invoke_preclaim<SusPayFinish>(ctx);
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case ttSUSPAY_CANCEL: return invoke_preclaim<SusPayCancel>(ctx);
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case ttREGULAR_KEY_SET: return invoke_preclaim<SetRegularKey>(ctx);
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case ttSIGNER_LIST_SET: return invoke_preclaim<SetSignerList>(ctx);
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case ttTICKET_CANCEL: return invoke_preclaim<CancelTicket>(ctx);
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case ttTICKET_CREATE: return invoke_preclaim<CreateTicket>(ctx);
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case ttTRUST_SET: return invoke_preclaim<SetTrust>(ctx);
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case ttAMENDMENT:
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case ttFEE: return invoke_preclaim<Change>(ctx);
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default:
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assert(false);
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return { temUNKNOWN, 0 };
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}
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}
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static
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std::uint64_t
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invoke_calculateBaseFee(PreclaimContext const& ctx)
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{
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switch (ctx.tx.getTxnType())
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{
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case ttACCOUNT_SET: return SetAccount::calculateBaseFee(ctx);
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case ttOFFER_CANCEL: return CancelOffer::calculateBaseFee(ctx);
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case ttOFFER_CREATE: return CreateOffer::calculateBaseFee(ctx);
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case ttPAYMENT: return Payment::calculateBaseFee(ctx);
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case ttSUSPAY_CREATE: return SusPayCreate::calculateBaseFee(ctx);
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case ttSUSPAY_FINISH: return SusPayFinish::calculateBaseFee(ctx);
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case ttSUSPAY_CANCEL: return SusPayCancel::calculateBaseFee(ctx);
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case ttREGULAR_KEY_SET: return SetRegularKey::calculateBaseFee(ctx);
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case ttSIGNER_LIST_SET: return SetSignerList::calculateBaseFee(ctx);
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case ttTICKET_CANCEL: return CancelTicket::calculateBaseFee(ctx);
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case ttTICKET_CREATE: return CreateTicket::calculateBaseFee(ctx);
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case ttTRUST_SET: return SetTrust::calculateBaseFee(ctx);
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case ttAMENDMENT:
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case ttFEE: return Change::calculateBaseFee(ctx);
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default:
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assert(false);
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return 0;
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}
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}
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static
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std::pair<TER, bool>
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invoke_apply (ApplyContext& ctx)
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{
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switch(ctx.tx.getTxnType())
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{
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case ttACCOUNT_SET: { SetAccount p(ctx); return p(); }
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case ttOFFER_CANCEL: { CancelOffer p(ctx); return p(); }
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case ttOFFER_CREATE: { CreateOffer p(ctx); return p(); }
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case ttPAYMENT: { Payment p(ctx); return p(); }
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case ttSUSPAY_CREATE: { SusPayCreate p(ctx); return p(); }
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case ttSUSPAY_FINISH: { SusPayFinish p(ctx); return p(); }
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case ttSUSPAY_CANCEL: { SusPayCancel p(ctx); return p(); }
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case ttREGULAR_KEY_SET: { SetRegularKey p(ctx); return p(); }
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case ttSIGNER_LIST_SET: { SetSignerList p(ctx); return p(); }
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case ttTICKET_CANCEL: { CancelTicket p(ctx); return p(); }
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case ttTICKET_CREATE: { CreateTicket p(ctx); return p(); }
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case ttTRUST_SET: { SetTrust p(ctx); return p(); }
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case ttAMENDMENT:
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case ttFEE: { Change p(ctx); return p(); }
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default:
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assert(false);
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return { temUNKNOWN, false };
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}
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}
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PreflightResult
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preflight(Application& app, Rules const& rules,
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STTx const& tx, ApplyFlags flags,
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beast::Journal j)
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{
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PreflightContext const pfctx(app, tx,
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rules, flags, j);
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try
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{
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return{ pfctx, invoke_preflight(pfctx) };
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}
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catch (std::exception const& e)
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{
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JLOG(j.fatal) <<
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"apply: " << e.what();
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return{ pfctx, tefEXCEPTION };
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}
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catch (...)
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{
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JLOG(j.fatal) <<
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"apply: <unknown exception>";
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return{ pfctx, tefEXCEPTION };
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}
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}
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PreclaimResult
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preclaim (PreflightResult const& preflightResult,
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Application& app, OpenView const& view)
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{
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boost::optional<PreclaimContext const> ctx;
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if (preflightResult.rules != view.rules())
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{
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auto secondFlight = preflight(app, view.rules(),
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preflightResult.tx, preflightResult.flags,
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preflightResult.j);
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ctx.emplace(app, view, secondFlight.ter, secondFlight.tx,
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secondFlight.flags, secondFlight.j);
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}
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else
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{
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ctx.emplace(
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app, view, preflightResult.ter, preflightResult.tx,
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preflightResult.flags, preflightResult.j);
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}
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try
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{
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if (ctx->preflightResult != tesSUCCESS)
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return { *ctx, ctx->preflightResult, 0 };
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return{ *ctx, invoke_preclaim(*ctx) };
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}
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catch (std::exception const& e)
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{
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JLOG(ctx->j.fatal) <<
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"apply: " << e.what();
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return{ *ctx, tefEXCEPTION, 0 };
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}
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catch (...)
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{
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JLOG(ctx->j.fatal) <<
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"apply: <unknown exception>";
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return{ *ctx, tefEXCEPTION, 0 };
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}
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}
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std::uint64_t
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calculateBaseFee(Application& app, ReadView const& view,
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STTx const& tx, beast::Journal j)
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{
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PreclaimContext const ctx(
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app, view, tesSUCCESS, tx,
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tapNONE, j);
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return invoke_calculateBaseFee(ctx);
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}
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std::pair<TER, bool>
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doApply(PreclaimResult const& preclaimResult,
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Application& app, OpenView& view)
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{
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if (preclaimResult.view.seq() != view.seq())
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{
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// Logic error from the caller. Don't have enough
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// info to recover.
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return{ tefEXCEPTION, false };
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}
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try
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{
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if (!preclaimResult.likelyToClaimFee)
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return{ preclaimResult.ter, false };
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ApplyContext ctx(app, view,
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preclaimResult.tx, preclaimResult.ter,
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preclaimResult.baseFee, preclaimResult.flags,
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preclaimResult.j);
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return invoke_apply(ctx);
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}
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catch (std::exception const& e)
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{
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JLOG(preclaimResult.j.fatal) <<
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"apply: " << e.what();
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return { tefEXCEPTION, false };
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}
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catch (...)
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{
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JLOG(preclaimResult.j.fatal) <<
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"apply: <unknown exception>";
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return { tefEXCEPTION, false };
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}
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}
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} // ripple
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