Clean up LedgerEntrySet and TransactionEngine:

* Reduce public interfaces
* Remove wrapper functions
* Remove freeze timed cutover code
* Return results directly instead of via ref parameters

Builds/VisualStudio2013/RippleD.vcxproj

@@ -2060,12 +2060,6 @@
     </ClCompile>
     <ClInclude Include="..\..\src\ripple\app\tx\TransactionAcquire.h">
     </ClInclude>
-    <ClCompile Include="..\..\src\ripple\app\tx\TransactionCheck.cpp">
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='debug|x64'">True</ExcludedFromBuild>
-      <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='release|x64'">True</ExcludedFromBuild>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='debug.classic|x64'">..\..\src\soci\src\core;..\..\src\sqlite;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <AdditionalIncludeDirectories Condition="'$(Configuration)|$(Platform)'=='release.classic|x64'">..\..\src\soci\src\core;..\..\src\sqlite;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-    </ClCompile>
     <ClCompile Include="..\..\src\ripple\app\tx\TransactionEngine.cpp">
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='debug|x64'">True</ExcludedFromBuild>
       <ExcludedFromBuild Condition="'$(Configuration)|$(Platform)'=='release|x64'">True</ExcludedFromBuild>
@@ -4518,8 +4512,6 @@
     </ClCompile>
     <ClInclude Include="..\..\src\soci\src\core\values.h">
     </ClInclude>
-    <ClInclude Include="..\..\src\soci\src\core\version.h">
-    </ClInclude>
     <ClInclude Include="..\..\src\sqlite\sqlite.h">
     </ClInclude>
     <ClCompile Include="..\..\src\sqlite\sqlite.unity.c">

Builds/VisualStudio2013/RippleD.vcxproj.filters

@@ -2613,9 +2613,6 @@
     <ClInclude Include="..\..\src\ripple\app\tx\TransactionAcquire.h">
       <Filter>ripple\app\tx</Filter>
     </ClInclude>
-    <ClCompile Include="..\..\src\ripple\app\tx\TransactionCheck.cpp">
-      <Filter>ripple\app\tx</Filter>
-    </ClCompile>
     <ClCompile Include="..\..\src\ripple\app\tx\TransactionEngine.cpp">
       <Filter>ripple\app\tx</Filter>
     </ClCompile>
@@ -5289,9 +5286,6 @@
     <ClInclude Include="..\..\src\soci\src\core\values.h">
       <Filter>soci\src\core</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\soci\src\core\version.h">
-      <Filter>soci\src\core</Filter>
-    </ClInclude>
     <ClInclude Include="..\..\src\sqlite\sqlite.h">
       <Filter>sqlite</Filter>
     </ClInclude>

src/ripple/app/consensus/LedgerConsensus.cpp

@@ -1852,27 +1852,26 @@ int applyTransaction (TransactionEngine& engine
 
     try
     {
-        bool didApply;
+        auto result = engine.applyTransaction (*txn, parms);
-        TER result = engine.applyTransaction (*txn, parms, didApply);
 
-        if (didApply)
+        if (result.second)
         {
             WriteLog (lsDEBUG, LedgerConsensus)
-            << "Transaction success: " << transHuman (result);
+            << "Transaction applied: " << transHuman (result.first);
             return LedgerConsensusImp::resultSuccess;
         }
 
-        if (isTefFailure (result) || isTemMalformed (result) ||
+        if (isTefFailure (result.first) || isTemMalformed (result.first) ||
-            isTelLocal (result))
+            isTelLocal (result.first))
         {
             // failure
             WriteLog (lsDEBUG, LedgerConsensus)
-                << "Transaction failure: " << transHuman (result);
+                << "Transaction failure: " << transHuman (result.first);
             return LedgerConsensusImp::resultFail;
         }
 
         WriteLog (lsDEBUG, LedgerConsensus)
-            << "Transaction retry: " << transHuman (result);
+            << "Transaction retry: " << transHuman (result.first);
         return LedgerConsensusImp::resultRetry;
     }
     catch (...)

src/ripple/app/ledger/Ledger.cpp

@@ -261,30 +261,6 @@ Ledger::~Ledger ()
     }
 }
 
-bool Ledger::enforceFreeze () const
-{
-
-    // Temporarily, the freze code can run in either
-    // enforcing mode or non-enforcing mode. In
-    // non-enforcing mode, freeze flags can be
-    // manipulated, but freezing is not actually
-    // enforced. Once freeze enforcing has been
-    // enabled, this function can be removed
-
-    // Let freeze enforcement be tested
-    // If you wish to test non-enforcing mode,
-    // you must remove this line
-    if (getConfig().RUN_STANDALONE)
-        return true;
-
-    // Freeze enforcing date is September 15, 2014
-    static std::uint32_t const enforceDate =
-        iToSeconds (boost::posix_time::ptime (
-            boost::gregorian::date (2014, boost::gregorian::Sep, 15)));
-
-    return mParentCloseTime >= enforceDate;
-}
-
 void Ledger::setImmutable ()
 {
     // Updates the hash and marks the ledger and its maps immutable

src/ripple/app/ledger/Ledger.h

@@ -181,8 +181,6 @@ public:
         mAccountStateMap->setLedgerSeq (mLedgerSeq);
     }
 
-    bool enforceFreeze () const;
-
     // ledger signature operations
     void addRaw (Serializer & s) const;
     void setRaw (Serializer & s, bool hasPrefix);

src/ripple/app/ledger/LedgerEntrySet.cpp

@@ -122,16 +122,6 @@ SLE::pointer LedgerEntrySet::entryCache (LedgerEntryType letType, uint256 const&
     return sleEntry;
 }
 
-LedgerEntryAction LedgerEntrySet::hasEntry (uint256 const& index) const
-{
-    std::map<uint256, LedgerEntrySetEntry>::const_iterator it = mEntries.find (index);
-
-    if (it == mEntries.end ())
-        return taaNONE;
-
-    return it->second.mAction;
-}
-
 void LedgerEntrySet::entryCache (SLE::ref sle)
 {
     assert (mLedger);
@@ -1187,7 +1177,7 @@ STAmount LedgerEntrySet::accountHolds (
 
 bool LedgerEntrySet::isGlobalFrozen (Account const& issuer)
 {
-    if (!enforceFreeze () || isXRP (issuer))
+    if (isXRP (issuer))
         return false;
 
     SLE::pointer sle = entryCache (ltACCOUNT_ROOT, getAccountRootIndex (issuer));
@@ -1204,7 +1194,7 @@ bool LedgerEntrySet::isFrozen(
     Currency const& currency,
     Account const& issuer)
 {
-    if (!enforceFreeze () || isXRP (currency))
+    if (isXRP (currency))
         return false;
 
     SLE::pointer sle = entryCache (ltACCOUNT_ROOT, getAccountRootIndex (issuer));

src/ripple/app/ledger/LedgerEntrySet.h

@@ -126,11 +126,6 @@ public:
         return mSeq;
     }
 
-    TransactionEngineParams getParams () const
-    {
-        return mParams;
-    }
-
     void bumpSeq ()
     {
         ++mSeq;
@@ -146,14 +141,9 @@ public:
         return mLedger;
     }
 
-    bool enforceFreeze () const
-    {
-        return mLedger->enforceFreeze ();
-    }
-
     // basic entry functions
     SLE::pointer getEntry (uint256 const& index, LedgerEntryAction&);
-    LedgerEntryAction hasEntry (uint256 const& index) const;
+
     void entryCache (SLE::ref);     // Add this entry to the cache
     void entryCreate (SLE::ref);    // This entry will be created
     void entryDelete (SLE::ref);    // This entry will be deleted

src/ripple/app/ledger/LedgerMaster.cpp

@@ -344,10 +344,9 @@ public:
                 if (getApp().getHashRouter ().addSuppressionFlags (it.first.getTXID (), SF_SIGGOOD))
                     tepFlags = static_cast<TransactionEngineParams> (tepFlags | tapNO_CHECK_SIGN);
 
-                bool didApply;
+                auto ret = engine.applyTransaction (*it.second, tepFlags);
-                engine.applyTransaction (*it.second, tepFlags, didApply);
 
-                if (didApply)
+                if (ret.second)
                     ++recovers;
 
                 // If a transaction is recovered but hasn't been relayed,
@@ -390,7 +389,7 @@ public:
             ScopedLockType sl (m_mutex);
             ledger = mCurrentLedger.getMutable ();
             engine.setLedger (ledger);
-            result = engine.applyTransaction (*txn, params, didApply);
+            std::tie(result, didApply) = engine.applyTransaction (*txn, params);
         }
         if (didApply)
         {

src/ripple/app/misc/NetworkOPs.cpp

@@ -1045,7 +1045,6 @@ Transaction::pointer NetworkOPsImp::processTransactionCb (
         if (callback)
             callback (trans, r);
 
-
         if (r == tefFAILURE)
             throw Fault (IO_ERROR);
 

src/ripple/app/paths/Pathfinder.cpp

@@ -710,8 +710,7 @@ int Pathfinder::getPathsOut (
 
     int aFlags = sleAccount->getFieldU32 (sfFlags);
     bool const bAuthRequired = (aFlags & lsfRequireAuth) != 0;
-    bool const bFrozen = ((aFlags & lsfGlobalFreeze) != 0)
+    bool const bFrozen = ((aFlags & lsfGlobalFreeze) != 0);
-        && mLedger->enforceFreeze ();
 
     int count = 0;
 
@@ -741,7 +740,7 @@ int Pathfinder::getPathsOut (
             {
                 // This probably isn't a useful path out
             }
-            else if (rspEntry->getFreezePeer () && mLedger->enforceFreeze ())
+            else if (rspEntry->getFreezePeer ())
             {
                 // Not a useful path out
             }

src/ripple/app/paths/RippleCalc.cpp

@@ -109,7 +109,7 @@ bool RippleCalc::addPathState(STPath const& path, TER& resultCode)
     if (pathState->status() == tesSUCCESS)
         pathState->checkNoRipple (uDstAccountID_, uSrcAccountID_);
 
-    if (pathState->status() == tesSUCCESS && mActiveLedger.enforceFreeze ())
+    if (pathState->status() == tesSUCCESS)
         pathState->checkFreeze ();
 
     pathState->setIndex (pathStateList_.size ());

src/ripple/app/tests/common_ledger.cpp

@@ -128,15 +128,12 @@ void
 applyTransaction(Ledger::pointer const& ledger, STTx const& tx, bool check)
 {
     TransactionEngine engine(ledger);
-    bool didApply = false;
+    auto r = engine.applyTransaction(tx,
-    auto r = engine.applyTransaction(tx, tapOPEN_LEDGER | (check ? tapNONE : tapNO_CHECK_SIGN),
+        tapOPEN_LEDGER | (check ? tapNONE : tapNO_CHECK_SIGN));
-        didApply);
+    if (r.first != tesSUCCESS)
-    if (r != tesSUCCESS)
+        throw std::runtime_error("r != tesSUCCESS");
-        throw std::runtime_error(
+    if (!r.second)
-        "r != tesSUCCESS");
+        throw std::runtime_error("didApply");
-    if (!didApply)
-        throw std::runtime_error(
-        "didApply");
 }
 
 // Create genesis ledger from a start amount in drops, and the public

src/ripple/app/transactors/CancelOffer.cpp

@@ -78,7 +78,7 @@ public:
 
         uint256 const offerIndex (getOfferIndex (mTxnAccountID, uOfferSequence));
 
-        SLE::pointer sleOffer (mEngine->entryCache (ltOFFER, 
+        SLE::pointer sleOffer (mEngine->view().entryCache (ltOFFER,
             offerIndex));
 
         if (sleOffer)

src/ripple/app/transactors/Change.cpp

@@ -119,10 +119,10 @@ private:
 
         auto const index = getLedgerAmendmentIndex ();
 
-        SLE::pointer amendmentObject (mEngine->entryCache (ltAMENDMENTS, index));
+        SLE::pointer amendmentObject (mEngine->view().entryCache (ltAMENDMENTS, index));
 
         if (!amendmentObject)
-            amendmentObject = mEngine->entryCreate(ltAMENDMENTS, index);
+            amendmentObject = mEngine->view().entryCreate(ltAMENDMENTS, index);
 
         STVector256 amendments (amendmentObject->getFieldV256 (sfAmendments));
 
@@ -134,7 +134,7 @@ private:
 
         amendments.push_back (amendment);
         amendmentObject->setFieldV256 (sfAmendments, amendments);
-        mEngine->entryModify (amendmentObject);
+        mEngine->view().entryModify (amendmentObject);
 
         getApp().getAmendmentTable ().enable (amendment);
 
@@ -148,10 +148,10 @@ private:
     {
         auto const index = getLedgerFeeIndex ();
 
-        SLE::pointer feeObject = mEngine->entryCache (ltFEE_SETTINGS, index);
+        SLE::pointer feeObject = mEngine->view().entryCache (ltFEE_SETTINGS, index);
 
         if (!feeObject)
-            feeObject = mEngine->entryCreate (ltFEE_SETTINGS, index);
+            feeObject = mEngine->view().entryCreate (ltFEE_SETTINGS, index);
 
         // VFALCO-FIXME this generates errors
         // m_journal.trace <<
@@ -166,7 +166,7 @@ private:
         feeObject->setFieldU32 (
             sfReserveIncrement, mTxn.getFieldU32 (sfReserveIncrement));
 
-        mEngine->entryModify (feeObject);
+        mEngine->view().entryModify (feeObject);
 
         // VFALCO-FIXME this generates errors
         // m_journal.trace <<

src/ripple/app/transactors/CreateOffer.cpp

@@ -49,7 +49,7 @@ private:
         // Only valid for custom currencies
         assert (!isXRP (issue.currency));
 
-        SLE::pointer const issuerAccount = mEngine->entryCache (
+        SLE::pointer const issuerAccount = mEngine->view().entryCache (
             ltACCOUNT_ROOT, getAccountRootIndex (issue.account));
 
         if (!issuerAccount)
@@ -65,7 +65,7 @@ private:
 
         if (issuerAccount->getFieldU32 (sfFlags) & lsfRequireAuth)
         {
-            SLE::pointer const trustLine (mEngine->entryCache (
+            SLE::pointer const trustLine (mEngine->view().entryCache (
                 ltRIPPLE_STATE, getRippleStateIndex (
                     mTxnAccountID, issue.account, issue.currency)));
 
@@ -604,7 +604,7 @@ public:
 
         view.bumpSeq (); // Begin ledger variance.
 
-        SLE::pointer sleCreator = mEngine->entryCache (
+        SLE::pointer sleCreator = mEngine->view().entryCache (
             ltACCOUNT_ROOT, getAccountRootIndex (mTxnAccountID));
 
         if (view.isGlobalFrozen (uPaysIssuerID) || view.isGlobalFrozen (uGetsIssuerID))
@@ -642,7 +642,7 @@ public:
         // Process a cancellation request that's passed along with an offer.
         if (bHaveCancel)
         {
-            SLE::pointer sleCancel = mEngine->entryCache (ltOFFER,
+            SLE::pointer sleCancel = mEngine->view().entryCache (ltOFFER,
                 getOfferIndex (mTxnAccountID, uCancelSequence));
 
             // It's not an error to not find the offer to cancel: it might have
@@ -831,7 +831,7 @@ public:
 
         if (result == tesSUCCESS)
         {
-            SLE::pointer sleOffer (mEngine->entryCreate (ltOFFER, offer_index));
+            SLE::pointer sleOffer (mEngine->view().entryCreate (ltOFFER, offer_index));
 
             sleOffer->setFieldAccount (sfAccount, mTxnAccountID);
             sleOffer->setFieldU32 (sfSequence, uSequence);

src/ripple/app/transactors/CreateTicket.cpp

@@ -80,7 +80,7 @@ public:
                 return tesSUCCESS;
         }
 
-        SLE::pointer sleTicket = mEngine->entryCreate (ltTICKET,
+        SLE::pointer sleTicket = mEngine->view().entryCreate (ltTICKET,
             getTicketIndex (mTxnAccountID, mTxn.getSequence ()));
 
         sleTicket->setFieldAccount (sfAccount, mTxnAccountID);
@@ -93,7 +93,7 @@ public:
         {
             Account const target_account (mTxn.getFieldAccount160 (sfTarget));
 
-            SLE::pointer sleTarget = mEngine->entryCache (ltACCOUNT_ROOT,
+            SLE::pointer sleTarget = mEngine->view().entryCache (ltACCOUNT_ROOT,
                 getAccountRootIndex (target_account));
 
             // Destination account does not exist.

src/ripple/app/transactors/Payment.cpp

@@ -192,7 +192,7 @@ public:
 
         // Open a ledger for editing.
         auto const index = getAccountRootIndex (uDstAccountID);
-        SLE::pointer sleDst (mEngine->entryCache (ltACCOUNT_ROOT, index));
+        SLE::pointer sleDst (mEngine->view().entryCache (ltACCOUNT_ROOT, index));
 
         if (!sleDst)
         {
@@ -234,7 +234,7 @@ public:
 
             // Create the account.
             auto const newIndex = getAccountRootIndex (uDstAccountID);
-            sleDst = mEngine->entryCreate (ltACCOUNT_ROOT, newIndex);
+            sleDst = mEngine->view().entryCreate (ltACCOUNT_ROOT, newIndex);
             sleDst->setFieldAccount (sfAccount, uDstAccountID);
             sleDst->setFieldU32 (sfSequence, 1);
         }
@@ -255,7 +255,7 @@ public:
             // Tell the engine that we are intending to change the the destination
             // account.  The source account gets always charged a fee so it's always
             // marked as modified.
-            mEngine->entryModify (sleDst);
+            mEngine->view().entryModify (sleDst);
         }
 
         TER terResult;

src/ripple/app/transactors/SetTrust.cpp

@@ -153,7 +153,7 @@ public:
             // lines exist now, why not remove this code and simply
             // return an error?
             SLE::pointer selDelete (
-                mEngine->entryCache (ltRIPPLE_STATE,
+                mEngine->view().entryCache (ltRIPPLE_STATE,
                     getRippleStateIndex (
                         mTxnAccountID, uDstAccountID, currency)));
 
@@ -173,7 +173,7 @@ public:
             }
         }
 
-        SLE::pointer sleDst (mEngine->entryCache (
+        SLE::pointer sleDst (mEngine->view().entryCache (
             ltACCOUNT_ROOT, getAccountRootIndex (uDstAccountID)));
 
         if (!sleDst)
@@ -186,7 +186,7 @@ public:
         STAmount saLimitAllow = saLimitAmount;
         saLimitAllow.setIssuer (mTxnAccountID);
 
-        SLE::pointer sleRippleState (mEngine->entryCache (ltRIPPLE_STATE,
+        SLE::pointer sleRippleState (mEngine->view().entryCache (ltRIPPLE_STATE,
             getRippleStateIndex (mTxnAccountID, uDstAccountID, currency)));
 
         if (sleRippleState)
@@ -391,7 +391,7 @@ public:
             }
             else
             {
-                mEngine->entryModify (sleRippleState);
+                mEngine->view().entryModify (sleRippleState);
 
                 m_journal.trace << "Modify ripple line";
             }

src/ripple/app/transactors/Transactor.cpp

@@ -266,7 +266,7 @@ TER Transactor::apply ()
         return terResult;
 
     // Find source account
-    mTxnAccount = mEngine->entryCache (ltACCOUNT_ROOT,
+    mTxnAccount = mEngine->view().entryCache (ltACCOUNT_ROOT,
         getAccountRootIndex (mTxnAccountID));
 
     calculateFee ();
@@ -303,7 +303,7 @@ TER Transactor::apply ()
     if (terResult != tesSUCCESS) return (terResult);
 
     if (mTxnAccount)
-        mEngine->entryModify (mTxnAccount);
+        mEngine->view().entryModify (mTxnAccount);
 
     return doApply ();
 }

src/ripple/app/tx/LocalTxs.cpp

@@ -156,9 +156,7 @@ public:
         {
             try
             {
-                TransactionEngineParams parms = tapOPEN_LEDGER;
+                engine.applyTransaction (*it.second, tapOPEN_LEDGER);
-                bool didApply;
-                engine.applyTransaction (*it.second, parms, didApply);
             }
             catch (...)
             {

src/ripple/app/tx/TransactionCheck.cpp

@@ -1,37 +0,0 @@
-//------------------------------------------------------------------------------
-/*
-    This file is part of rippled: https://github.com/ripple/rippled
-    Copyright (c) 2012, 2013 Ripple Labs Inc.
-
-    Permission to use, copy, modify, and/or distribute this software for any
-    purpose  with  or without fee is hereby granted, provided that the above
-    copyright notice and this permission notice appear in all copies.
-
-    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
-    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
-    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-//==============================================================================
-
-#include <BeastConfig.h>
-#include <ripple/app/tx/TransactionEngine.h>
-
-namespace ripple {
-
-// VFALCO TODO move this into TransactionEngine.cpp
-
-// Double check a transaction's metadata to make sure no system invariants were broken
-
-bool TransactionEngine::checkInvariants (TER result, const STTx& txn, TransactionEngineParams params)
-{
-    // VFALCO I deleted a bunch of code that was wrapped in #if 0.
-    //        If you need it, check the commit log.
-
-    return true;
-}
-
-} // ripple

src/ripple/app/tx/TransactionEngine.cpp

@@ -80,15 +80,25 @@ void TransactionEngine::txnWrite ()
     }
 }
 
-TER TransactionEngine::applyTransaction (
+std::pair<TER, bool>
+TransactionEngine::applyTransaction (
     STTx const& txn,
-    TransactionEngineParams params,
+    TransactionEngineParams params)
-    bool& didApply)
 {
-    WriteLog (lsTRACE, TransactionEngine) << "applyTransaction>";
-    didApply = false;
     assert (mLedger);
-    mNodes.init (mLedger, txn.getTransactionID (), mLedger->getLedgerSeq (), params);
+
+    WriteLog (lsTRACE, TransactionEngine) << "applyTransaction>";
+
+    uint256 const& txID = txn.getTransactionID ();
+
+    if (!txID)
+    {
+        WriteLog (lsWARNING, TransactionEngine) <<
+            "applyTransaction: invalid transaction id";
+        return std::make_pair(temINVALID_FLAG, false);
+    }
+
+    mNodes.init (mLedger, txID, mLedger->getLedgerSeq (), params);
 
 #ifdef BEAST_DEBUG
     if (1)
@@ -109,22 +119,13 @@ TER TransactionEngine::applyTransaction (
     }
 #endif
 
-    uint256 const& txID = txn.getTransactionID ();
-
-    if (!txID)
-    {
-        WriteLog (lsWARNING, TransactionEngine) <<
-            "applyTransaction: invalid transaction id";
-        return temINVALID;
-    }
-
     TER terResult = Transactor::transact (txn, params, this);
 
     if (terResult == temUNKNOWN)
     {
         WriteLog (lsWARNING, TransactionEngine) <<
             "applyTransaction: Invalid transaction: unknown transaction type";
-        return temUNKNOWN;
+        return std::make_pair(temUNKNOWN, false);
     }
 
     if (ShouldLog (lsDEBUG, TransactionEngine))
@@ -140,15 +141,16 @@ TER TransactionEngine::applyTransaction (
             " : " << strHuman;
     }
 
-    if (isTesSuccess (terResult))
+    bool didApply = isTesSuccess (terResult);
-        didApply = true;
+
-    else if (isTecClaim (terResult) && !(params & tapRETRY))
+    if (isTecClaim (terResult) && !(params & tapRETRY))
     {
         // only claim the transaction fee
-        WriteLog (lsDEBUG, TransactionEngine) << "Reprocessing to only claim fee";
+        WriteLog (lsDEBUG, TransactionEngine) <<
+            "Reprocessing tx " << txID << " to only claim fee";
         mNodes.clear ();
 
-        SLE::pointer txnAcct = entryCache (ltACCOUNT_ROOT,
+        SLE::pointer txnAcct = mNodes.entryCache (ltACCOUNT_ROOT,
             getAccountRootIndex (txn.getSourceAccount ()));
 
         if (!txnAcct)
@@ -182,18 +184,18 @@ TER TransactionEngine::applyTransaction (
                         fee = balance;
                     txnAcct->setFieldAmount (sfBalance, balance - fee);
                     txnAcct->setFieldU32 (sfSequence, t_seq + 1);
-                    entryModify (txnAcct);
+                    mNodes.entryModify (txnAcct);
                     didApply = true;
                 }
             }
         }
     }
-    else
+    else if (!didApply)
-        WriteLog (lsDEBUG, TransactionEngine) << "Not applying transaction " << txID;
-
-    if (didApply)
     {
-        if (!checkInvariants (terResult, txn, params))
+        WriteLog (lsDEBUG, TransactionEngine) << "Not applying transaction " << txID;
+    }
+
+    if (didApply && !checkInvariants (terResult, txn, params))
     {
         WriteLog (lsFATAL, TransactionEngine) <<
             "Transaction violates invariants";
@@ -206,7 +208,8 @@ TER TransactionEngine::applyTransaction (
         didApply = false;
         terResult = tefINTERNAL;
     }
-        else
+
+    if (didApply)
     {
         // Transaction succeeded fully or (retries are not allowed and the
         // transaction could claim a fee)
@@ -223,7 +226,7 @@ TER TransactionEngine::applyTransaction (
             if (!mLedger->addTransaction (txID, s))
             {
                 WriteLog (lsFATAL, TransactionEngine) <<
-                        "Tried to add transaction to open ledger that already had it";
+                    "Duplicate transaction applied";
                 assert (false);
                 throw std::runtime_error ("Duplicate transaction applied");
             }
@@ -233,7 +236,7 @@ TER TransactionEngine::applyTransaction (
             if (!mLedger->addTransaction (txID, s, m))
             {
                 WriteLog (lsFATAL, TransactionEngine) <<
-                        "Tried to add transaction to ledger that already had it";
+                    "Duplicate transaction applied to closed ledger";
                 assert (false);
                 throw std::runtime_error ("Duplicate transaction applied to closed ledger");
             }
@@ -243,9 +246,7 @@ TER TransactionEngine::applyTransaction (
             mLedger->destroyCoins (saPaid.getNValue ());
         }
     }
-    }
 
-    mTxnAccount.reset ();
     mNodes.clear ();
 
     if (!(params & tapOPEN_LEDGER) && isTemMalformed (terResult))
@@ -253,7 +254,19 @@ TER TransactionEngine::applyTransaction (
         // XXX Malformed or failed transaction in closed ledger must bow out.
     }
 
-    return terResult;
+    return { terResult, didApply };
+}
+
+bool
+TransactionEngine::checkInvariants (
+    TER result,
+    STTx const& txn,
+    TransactionEngineParams params)
+{
+    // VFALCO I deleted a bunch of code that was wrapped in #if 0.
+    //        If you need it, check the commit log.
+
+    return true;
 }
 
 } // ripple

src/ripple/app/tx/TransactionEngine.h

@@ -22,6 +22,7 @@
 
 #include <ripple/app/ledger/Ledger.h>
 #include <ripple/app/ledger/LedgerEntrySet.h>
+#include <utility>
 
 namespace ripple {
 
@@ -39,67 +40,45 @@ public:
 private:
     LedgerEntrySet mNodes;
 
-    TER setAuthorized (const STTx & txn, bool bMustSetGenerator);
+    void txnWrite ();
-    TER checkSig (const STTx & txn);
 
 protected:
     Ledger::pointer mLedger;
-    int                 mTxnSeq;
+    int mTxnSeq = 0;
-
-    Account             mTxnAccountID;
-    SLE::pointer        mTxnAccount;
-
-    void                txnWrite ();
 
 public:
-    typedef std::shared_ptr<TransactionEngine> pointer;
+    TransactionEngine () = default;
 
-    TransactionEngine () : mTxnSeq (0)
+    TransactionEngine (Ledger::ref ledger)
-    {
+        : mLedger (ledger)
-        ;
-    }
-    TransactionEngine (Ledger::ref ledger) : mLedger (ledger), mTxnSeq (0)
     {
         assert (mLedger);
     }
 
-    LedgerEntrySet& view ()
+    LedgerEntrySet&
+    view ()
     {
         return mNodes;
     }
-    Ledger::ref getLedger ()
+
+    Ledger::ref
+    getLedger ()
     {
         return mLedger;
     }
-    void setLedger (Ledger::ref ledger)
+
+    void
+    setLedger (Ledger::ref ledger)
     {
         assert (ledger);
         mLedger = ledger;
     }
 
-    // VFALCO TODO Remove these pointless wrappers
+    std::pair<TER, bool>
-    SLE::pointer entryCreate (LedgerEntryType type, uint256 const& index)
+    applyTransaction (STTx const&, TransactionEngineParams);
-    {
-        return mNodes.entryCreate (type, index);
-    }
 
-    SLE::pointer entryCache (LedgerEntryType type, uint256 const& index)
+    bool
-    {
+    checkInvariants (TER result, STTx const& txn, TransactionEngineParams params);
-        return mNodes.entryCache (type, index);
-    }
-
-    void entryDelete (SLE::ref sleEntry)
-    {
-        mNodes.entryDelete (sleEntry);
-    }
-
-    void entryModify (SLE::ref sleEntry)
-    {
-        mNodes.entryModify (sleEntry);
-    }
-
-    TER applyTransaction (const STTx&, TransactionEngineParams, bool & didApply);
-    bool checkInvariants (TER result, const STTx & txn, TransactionEngineParams params);
 };
 
 inline TransactionEngineParams operator| (const TransactionEngineParams& l1, const TransactionEngineParams& l2)

src/ripple/legacy/0.27/CreateOffer27.cpp

@@ -39,7 +39,7 @@ CreateOffer::checkAcceptAsset(IssueRef issue) const
     /* Only valid for custom currencies */
     assert (!isXRP (issue.currency));
 
-    SLE::pointer const issuerAccount = mEngine->entryCache (
+    SLE::pointer const issuerAccount = mEngine->view().entryCache (
         ltACCOUNT_ROOT, getAccountRootIndex (issue.account));
 
     if (!issuerAccount)
@@ -55,7 +55,7 @@ CreateOffer::checkAcceptAsset(IssueRef issue) const
 
     if (issuerAccount->getFieldU32 (sfFlags) & lsfRequireAuth)
     {
-        SLE::pointer const trustLine (mEngine->entryCache (
+        SLE::pointer const trustLine (mEngine->view().entryCache (
             ltRIPPLE_STATE, getRippleStateIndex (
                 mTxnAccountID, issue.account, issue.currency)));
 
@@ -236,7 +236,7 @@ CreateOffer::doApply()
 
     view.bumpSeq (); // Begin ledger variance.
 
-    SLE::pointer sleCreator = mEngine->entryCache (
+    SLE::pointer sleCreator = mEngine->view().entryCache (
         ltACCOUNT_ROOT, getAccountRootIndex (mTxnAccountID));
 
     if (uTxFlags & tfOfferCreateMask)
@@ -336,7 +336,7 @@ CreateOffer::doApply()
     {
         uint256 const uCancelIndex (
             getOfferIndex (mTxnAccountID, uCancelSequence));
-        SLE::pointer sleCancel = mEngine->entryCache (ltOFFER, uCancelIndex);
+        SLE::pointer sleCancel = mEngine->view().entryCache (ltOFFER, uCancelIndex);
 
         // It's not an error to not find the offer to cancel: it might have
         // been consumed or removed as we are processing.
@@ -571,7 +571,7 @@ CreateOffer::doApply()
                     saTakerGets.getHumanCurrency ();
             }
 
-            SLE::pointer sleOffer (mEngine->entryCreate (ltOFFER, uLedgerIndex));
+            SLE::pointer sleOffer (mEngine->view().entryCreate (ltOFFER, uLedgerIndex));
 
             sleOffer->setFieldAccount (sfAccount, mTxnAccountID);
             sleOffer->setFieldU32 (sfSequence, uSequence);

src/ripple/unity/app4.cpp

@@ -26,7 +26,6 @@
 #include <ripple/app/paths/RippleState.cpp>
 #include <ripple/app/peers/UniqueNodeList.cpp>
 #include <ripple/app/transactors/Transactor.h>
-#include <ripple/app/tx/TransactionCheck.cpp>
 #include <ripple/app/tx/TransactionMaster.cpp>
 #include <ripple/app/tx/Transaction.cpp>
 #include <ripple/app/tx/TransactionEngine.cpp>