Files
xahaud/src/ripple_app/ledger/Ledger.cpp
2013-09-25 17:27:06 -07:00

2014 lines
58 KiB
C++

//------------------------------------------------------------------------------
/*
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.
*/
//==============================================================================
SETUP_LOG (Ledger)
LedgerBase::LedgerBase ()
: mLock (this, "Ledger", __FILE__, __LINE__)
{
}
Ledger::Ledger (const RippleAddress& masterID, uint64 startAmount)
: mTotCoins (startAmount)
, mLedgerSeq (1) // First Ledger
, mCloseTime (0)
, mParentCloseTime (0)
, mCloseResolution (LEDGER_TIME_ACCURACY)
, mCloseFlags (0)
, mClosed (false)
, mValidated (false)
, mValidHash (false)
, mAccepted (false)
, mImmutable (false)
, mTransactionMap (boost::make_shared <SHAMap> (smtTRANSACTION))
, mAccountStateMap (boost::make_shared <SHAMap> (smtSTATE))
{
// special case: put coins in root account
AccountState::pointer startAccount = boost::make_shared<AccountState> (masterID);
startAccount->peekSLE ().setFieldAmount (sfBalance, startAmount);
startAccount->peekSLE ().setFieldU32 (sfSequence, 1);
WriteLog (lsTRACE, Ledger) << "root account: " << startAccount->peekSLE ().getJson (0);
mAccountStateMap->armDirty ();
writeBack (lepCREATE, startAccount->getSLE ());
SHAMap::flushDirty (*mAccountStateMap->disarmDirty (), 256, hotACCOUNT_NODE, mLedgerSeq);
initializeFees ();
}
Ledger::Ledger (uint256 const& parentHash,
uint256 const& transHash,
uint256 const& accountHash,
uint64 totCoins,
uint32 closeTime,
uint32 parentCloseTime,
int closeFlags,
int closeResolution,
uint32 ledgerSeq,
bool& loaded)
: mParentHash (parentHash)
, mTransHash (transHash)
, mAccountHash (accountHash)
, mTotCoins (totCoins)
, mLedgerSeq (ledgerSeq)
, mCloseTime (closeTime)
, mParentCloseTime (parentCloseTime)
, mCloseResolution (closeResolution)
, mCloseFlags (closeFlags)
, mClosed (false)
, mValidated (false)
, mValidHash (false)
, mAccepted (false)
, mImmutable (true)
, mTransactionMap (boost::make_shared <SHAMap> (smtTRANSACTION, transHash))
, mAccountStateMap (boost::make_shared <SHAMap> (smtSTATE, accountHash))
{
updateHash ();
loaded = true;
if (mTransHash.isNonZero () && !mTransactionMap->fetchRoot (mTransHash, NULL))
{
loaded = false;
WriteLog (lsWARNING, Ledger) << "Don't have TX root for ledger";
}
if (mAccountHash.isNonZero () && !mAccountStateMap->fetchRoot (mAccountHash, NULL))
{
loaded = false;
WriteLog (lsWARNING, Ledger) << "Don't have AS root for ledger";
}
mTransactionMap->setImmutable ();
mAccountStateMap->setImmutable ();
initializeFees ();
}
// Create a new ledger that's a snapshot of this one
Ledger::Ledger (Ledger& ledger,
bool isMutable)
: mParentHash (ledger.mParentHash)
, mTotCoins (ledger.mTotCoins)
, mLedgerSeq (ledger.mLedgerSeq)
, mCloseTime (ledger.mCloseTime)
, mParentCloseTime (ledger.mParentCloseTime)
, mCloseResolution (ledger.mCloseResolution)
, mCloseFlags (ledger.mCloseFlags)
, mClosed (ledger.mClosed)
, mValidated (ledger.mValidated)
, mValidHash (false)
, mAccepted (ledger.mAccepted)
, mImmutable (!isMutable)
, mTransactionMap (ledger.mTransactionMap->snapShot (isMutable))
, mAccountStateMap (ledger.mAccountStateMap->snapShot (isMutable))
{
updateHash ();
initializeFees ();
}
// Create a new ledger that follows this one
Ledger::Ledger (bool /* dummy */,
Ledger& prevLedger)
: mTotCoins (prevLedger.mTotCoins)
, mLedgerSeq (prevLedger.mLedgerSeq + 1)
, mParentCloseTime (prevLedger.mCloseTime)
, mCloseResolution (prevLedger.mCloseResolution)
, mCloseFlags (0)
, mClosed (false)
, mValidated (false)
, mValidHash (false)
, mAccepted (false)
, mImmutable (false)
, mTransactionMap (boost::make_shared <SHAMap> (smtTRANSACTION))
, mAccountStateMap (prevLedger.mAccountStateMap->snapShot (true))
{
prevLedger.updateHash ();
mParentHash = prevLedger.getHash ();
assert (mParentHash.isNonZero ());
mCloseResolution = ContinuousLedgerTiming::getNextLedgerTimeResolution (
prevLedger.mCloseResolution,
prevLedger.getCloseAgree (),
mLedgerSeq);
if (prevLedger.mCloseTime == 0)
{
mCloseTime = roundCloseTime (getApp().getOPs ().getCloseTimeNC (), mCloseResolution);
}
else
{
mCloseTime = prevLedger.mCloseTime + mCloseResolution;
}
initializeFees ();
}
Ledger::Ledger (Blob const& rawLedger,
bool hasPrefix)
: mClosed (false)
, mValidated (false)
, mValidHash (false)
, mAccepted (false)
, mImmutable (true)
{
Serializer s (rawLedger);
setRaw (s, hasPrefix);
initializeFees ();
}
Ledger::Ledger (const std::string& rawLedger, bool hasPrefix) :
mClosed (false), mValidated(false), mValidHash (false), mAccepted (false), mImmutable (true)
{
Serializer s (rawLedger);
setRaw (s, hasPrefix);
initializeFees ();
}
Ledger::~Ledger ()
{
if (mTransactionMap)
{
logTimedDestroy <Ledger> (mTransactionMap,
String ("mTransactionMap with ") +
String::fromNumber (mTransactionMap->size ()) + " items");
}
if (mAccountStateMap)
{
logTimedDestroy <Ledger> (mAccountStateMap,
String ("mAccountStateMap with ") +
String::fromNumber (mAccountStateMap->size ()) + " items");
}
}
void Ledger::setImmutable ()
{
updateHash ();
mImmutable = true;
if (mTransactionMap)
mTransactionMap->setImmutable ();
if (mAccountStateMap)
mAccountStateMap->setImmutable ();
}
void Ledger::updateHash ()
{
if (!mImmutable)
{
if (mTransactionMap)
mTransHash = mTransactionMap->getHash ();
else
mTransHash.zero ();
if (mAccountStateMap)
mAccountHash = mAccountStateMap->getHash ();
else
mAccountHash.zero ();
}
// VFALCO TODO Fix this hard coded magic number 118
Serializer s (118);
s.add32 (HashPrefix::ledgerMaster);
addRaw (s);
mHash = s.getSHA512Half ();
mValidHash = true;
}
void Ledger::setRaw (Serializer& s, bool hasPrefix)
{
SerializerIterator sit (s);
if (hasPrefix)
sit.get32 ();
mLedgerSeq = sit.get32 ();
mTotCoins = sit.get64 ();
mParentHash = sit.get256 ();
mTransHash = sit.get256 ();
mAccountHash = sit.get256 ();
mParentCloseTime = sit.get32 ();
mCloseTime = sit.get32 ();
mCloseResolution = sit.get8 ();
mCloseFlags = sit.get8 ();
updateHash ();
if (mValidHash)
{
mTransactionMap = boost::make_shared<SHAMap> (smtTRANSACTION, mTransHash);
mAccountStateMap = boost::make_shared<SHAMap> (smtSTATE, mAccountHash);
}
}
void Ledger::addRaw (Serializer& s) const
{
s.add32 (mLedgerSeq);
s.add64 (mTotCoins);
s.add256 (mParentHash);
s.add256 (mTransHash);
s.add256 (mAccountHash);
s.add32 (mParentCloseTime);
s.add32 (mCloseTime);
s.add8 (mCloseResolution);
s.add8 (mCloseFlags);
}
void Ledger::setAccepted (uint32 closeTime, int closeResolution, bool correctCloseTime)
{
// used when we witnessed the consensus
assert (mClosed && !mAccepted);
mCloseTime = correctCloseTime ? roundCloseTime (closeTime, closeResolution) : closeTime;
mCloseResolution = closeResolution;
mCloseFlags = correctCloseTime ? 0 : sLCF_NoConsensusTime;
mAccepted = true;
setImmutable ();
}
void Ledger::setAccepted ()
{
// used when we acquired the ledger
// FIXME assert(mClosed && (mCloseTime != 0) && (mCloseResolution != 0));
if ((mCloseFlags & sLCF_NoConsensusTime) == 0)
mCloseTime = roundCloseTime (mCloseTime, mCloseResolution);
mAccepted = true;
setImmutable ();
}
bool Ledger::hasAccount (const RippleAddress& accountID)
{
return mAccountStateMap->hasItem (Ledger::getAccountRootIndex (accountID));
}
AccountState::pointer Ledger::getAccountState (const RippleAddress& accountID)
{
#ifdef BEAST_DEBUG
// Log::out() << "Ledger:getAccountState(" << accountID.humanAccountID() << ")";
#endif
SLE::pointer sle = getSLEi (Ledger::getAccountRootIndex (accountID));
if (!sle)
{
WriteLog (lsDEBUG, Ledger) << boost::str (boost::format ("Ledger:getAccountState: not found: %s: %s")
% accountID.humanAccountID ()
% Ledger::getAccountRootIndex (accountID).GetHex ());
return AccountState::pointer ();
}
if (sle->getType () != ltACCOUNT_ROOT)
return AccountState::pointer ();
return boost::make_shared<AccountState> (sle, accountID);
}
NicknameState::pointer Ledger::getNicknameState (uint256 const& uNickname)
{
SHAMapItem::pointer item = mAccountStateMap->peekItem (Ledger::getNicknameIndex (uNickname));
if (!item)
{
return NicknameState::pointer ();
}
SerializedLedgerEntry::pointer sle =
boost::make_shared<SerializedLedgerEntry> (item->peekSerializer (), item->getTag ());
if (sle->getType () != ltNICKNAME) return NicknameState::pointer ();
return boost::make_shared<NicknameState> (sle);
}
bool Ledger::addTransaction (uint256 const& txID, const Serializer& txn)
{
// low-level - just add to table
SHAMapItem::pointer item = boost::make_shared<SHAMapItem> (txID, txn.peekData ());
if (!mTransactionMap->addGiveItem (item, true, false))
{
WriteLog (lsWARNING, Ledger) << "Attempt to add transaction to ledger that already had it";
return false;
}
mValidHash = false;
return true;
}
bool Ledger::addTransaction (uint256 const& txID, const Serializer& txn, const Serializer& md)
{
// low-level - just add to table
Serializer s (txn.getDataLength () + md.getDataLength () + 16);
s.addVL (txn.peekData ());
s.addVL (md.peekData ());
SHAMapItem::pointer item = boost::make_shared<SHAMapItem> (txID, s.peekData ());
if (!mTransactionMap->addGiveItem (item, true, true))
{
WriteLog (lsFATAL, Ledger) << "Attempt to add transaction+MD to ledger that already had it";
return false;
}
mValidHash = false;
return true;
}
Transaction::pointer Ledger::getTransaction (uint256 const& transID) const
{
SHAMapTreeNode::TNType type;
SHAMapItem::pointer item = mTransactionMap->peekItem (transID, type);
if (!item) return Transaction::pointer ();
Transaction::pointer txn = getApp().getMasterTransaction ().fetch (transID, false);
if (txn)
return txn;
if (type == SHAMapTreeNode::tnTRANSACTION_NM)
txn = Transaction::sharedTransaction (item->getData (), true);
else if (type == SHAMapTreeNode::tnTRANSACTION_MD)
{
Blob txnData;
int txnLength;
if (!item->peekSerializer ().getVL (txnData, 0, txnLength))
return Transaction::pointer ();
txn = Transaction::sharedTransaction (txnData, false);
}
else
{
assert (false);
return Transaction::pointer ();
}
if (txn->getStatus () == NEW)
txn->setStatus (mClosed ? COMMITTED : INCLUDED, mLedgerSeq);
getApp().getMasterTransaction ().canonicalize (&txn);
return txn;
}
SerializedTransaction::pointer Ledger::getSTransaction (SHAMapItem::ref item, SHAMapTreeNode::TNType type)
{
SerializerIterator sit (item->peekSerializer ());
if (type == SHAMapTreeNode::tnTRANSACTION_NM)
return boost::make_shared<SerializedTransaction> (boost::ref (sit));
else if (type == SHAMapTreeNode::tnTRANSACTION_MD)
{
Serializer sTxn (sit.getVL ());
SerializerIterator tSit (sTxn);
return boost::make_shared<SerializedTransaction> (boost::ref (tSit));
}
return SerializedTransaction::pointer ();
}
SerializedTransaction::pointer Ledger::getSMTransaction (SHAMapItem::ref item, SHAMapTreeNode::TNType type,
TransactionMetaSet::pointer& txMeta)
{
SerializerIterator sit (item->peekSerializer ());
if (type == SHAMapTreeNode::tnTRANSACTION_NM)
{
txMeta.reset ();
return boost::make_shared<SerializedTransaction> (boost::ref (sit));
}
else if (type == SHAMapTreeNode::tnTRANSACTION_MD)
{
Serializer sTxn (sit.getVL ());
SerializerIterator tSit (sTxn);
txMeta = boost::make_shared<TransactionMetaSet> (item->getTag (), mLedgerSeq, sit.getVL ());
return boost::make_shared<SerializedTransaction> (boost::ref (tSit));
}
txMeta.reset ();
return SerializedTransaction::pointer ();
}
bool Ledger::getTransaction (uint256 const& txID, Transaction::pointer& txn, TransactionMetaSet::pointer& meta)
{
SHAMapTreeNode::TNType type;
SHAMapItem::pointer item = mTransactionMap->peekItem (txID, type);
if (!item)
return false;
if (type == SHAMapTreeNode::tnTRANSACTION_NM)
{
// in tree with no metadata
txn = getApp().getMasterTransaction ().fetch (txID, false);
meta.reset ();
if (!txn)
txn = Transaction::sharedTransaction (item->peekData (), true);
}
else if (type == SHAMapTreeNode::tnTRANSACTION_MD)
{
// in tree with metadata
SerializerIterator it (item->peekSerializer ());
txn = getApp().getMasterTransaction ().fetch (txID, false);
if (!txn)
txn = Transaction::sharedTransaction (it.getVL (), true);
else
it.getVL (); // skip transaction
meta = boost::make_shared<TransactionMetaSet> (txID, mLedgerSeq, it.getVL ());
}
else
return false;
if (txn->getStatus () == NEW)
txn->setStatus (mClosed ? COMMITTED : INCLUDED, mLedgerSeq);
getApp().getMasterTransaction ().canonicalize (&txn);
return true;
}
bool Ledger::getTransactionMeta (uint256 const& txID, TransactionMetaSet::pointer& meta)
{
SHAMapTreeNode::TNType type;
SHAMapItem::pointer item = mTransactionMap->peekItem (txID, type);
if (!item)
return false;
if (type != SHAMapTreeNode::tnTRANSACTION_MD)
return false;
SerializerIterator it (item->peekSerializer ());
it.getVL (); // skip transaction
meta = boost::make_shared<TransactionMetaSet> (txID, mLedgerSeq, it.getVL ());
return true;
}
bool Ledger::getMetaHex (uint256 const& transID, std::string& hex)
{
SHAMapTreeNode::TNType type;
SHAMapItem::pointer item = mTransactionMap->peekItem (transID, type);
if (!item)
return false;
if (type != SHAMapTreeNode::tnTRANSACTION_MD)
return false;
SerializerIterator it (item->peekSerializer ());
it.getVL (); // skip transaction
hex = strHex (it.getVL ());
return true;
}
uint256 Ledger::getHash ()
{
if (!mValidHash)
updateHash ();
return mHash;
}
void Ledger::saveValidatedLedger (bool current)
{
WriteLog (lsTRACE, Ledger) << "saveValidatedLedger " << (current ? "" : "fromAcquire ") << getLedgerSeq ();
static boost::format deleteLedger ("DELETE FROM Ledgers WHERE LedgerSeq = %u;");
static boost::format deleteTrans1 ("DELETE FROM Transactions WHERE LedgerSeq = %u;");
static boost::format deleteTrans2 ("DELETE FROM AccountTransactions WHERE LedgerSeq = %u;");
static boost::format deleteAcctTrans ("DELETE FROM AccountTransactions WHERE TransID = '%s';");
static boost::format transExists ("SELECT Status FROM Transactions WHERE TransID = '%s';");
static boost::format
updateTx ("UPDATE Transactions SET LedgerSeq = %u, Status = '%c', TxnMeta = %s WHERE TransID = '%s';");
static boost::format addLedger ("INSERT OR REPLACE INTO Ledgers "
"(LedgerHash,LedgerSeq,PrevHash,TotalCoins,ClosingTime,PrevClosingTime,CloseTimeRes,CloseFlags,"
"AccountSetHash,TransSetHash) VALUES ('%s','%u','%s','%s','%u','%u','%d','%u','%s','%s');");
if (!getAccountHash ().isNonZero ())
{
WriteLog (lsFATAL, Ledger) << "AH is zero: " << getJson (0);
assert (false);
}
if (getAccountHash () != mAccountStateMap->getHash ())
{
WriteLog (lsFATAL, Ledger) << "sAL: " << getAccountHash () << " != " << mAccountStateMap->getHash ();
WriteLog (lsFATAL, Ledger) << "saveAcceptedLedger: seq=" << mLedgerSeq << ", current=" << current;
assert (false);
}
assert (getTransHash () == mTransactionMap->getHash ());
// Save the ledger header in the hashed object store
{
Serializer s (128);
s.add32 (HashPrefix::ledgerMaster);
addRaw (s);
getApp().getNodeStore ().store (hotLEDGER, mLedgerSeq, s.modData (), mHash);
}
AcceptedLedger::pointer aLedger = AcceptedLedger::makeAcceptedLedger (shared_from_this ());
{
DeprecatedScopedLock sl (getApp().getLedgerDB ()->getDBLock ());
getApp().getLedgerDB ()->getDB ()->executeSQL (boost::str (deleteLedger % mLedgerSeq));
}
{
Database* db = getApp().getTxnDB ()->getDB ();
DeprecatedScopedLock dbLock (getApp().getTxnDB ()->getDBLock ());
db->executeSQL ("BEGIN TRANSACTION;");
db->executeSQL (boost::str (deleteTrans1 % mLedgerSeq));
db->executeSQL (boost::str (deleteTrans2 % mLedgerSeq));
BOOST_FOREACH (const AcceptedLedger::value_type & vt, aLedger->getMap ())
{
uint256 txID = vt.second->getTransactionID ();
getApp().getMasterTransaction ().inLedger (txID, mLedgerSeq);
db->executeSQL (boost::str (deleteAcctTrans % txID.GetHex ()));
const std::vector<RippleAddress>& accts = vt.second->getAffected ();
if (!accts.empty ())
{
std::string sql = "INSERT INTO AccountTransactions (TransID, Account, LedgerSeq, TxnSeq) VALUES ";
bool first = true;
for (std::vector<RippleAddress>::const_iterator it = accts.begin (), end = accts.end (); it != end; ++it)
{
if (!first)
sql += ", ('";
else
{
sql += "('";
first = false;
}
sql += txID.GetHex ();
sql += "','";
sql += it->humanAccountID ();
sql += "',";
sql += lexicalCastThrow <std::string> (getLedgerSeq ());
sql += ",";
sql += lexicalCastThrow <std::string> (vt.second->getTxnSeq ());
sql += ")";
}
sql += ";";
WriteLog (lsTRACE, Ledger) << "ActTx: " << sql;
db->executeSQL (sql);
}
else
WriteLog (lsWARNING, Ledger) << "Transaction in ledger " << mLedgerSeq << " affects no accounts";
db->executeSQL (SerializedTransaction::getMetaSQLInsertReplaceHeader () +
vt.second->getTxn ()->getMetaSQL (getLedgerSeq (), vt.second->getEscMeta ()) + ";");
}
db->executeSQL ("COMMIT TRANSACTION;");
}
{
DeprecatedScopedLock sl (getApp().getLedgerDB ()->getDBLock ());
getApp().getLedgerDB ()->getDB ()->executeSQL (boost::str (addLedger %
getHash ().GetHex () % mLedgerSeq % mParentHash.GetHex () %
lexicalCastThrow <std::string> (mTotCoins) % mCloseTime % mParentCloseTime %
mCloseResolution % mCloseFlags % mAccountHash.GetHex () % mTransHash.GetHex ()));
}
{ // Clients can now trust the database for information about this ledger sequence
StaticScopedLockType sl (sPendingSaveLock, __FILE__, __LINE__);
sPendingSaves.erase(getLedgerSeq());
}
}
#ifndef NO_SQLITE3_PREPARE
Ledger::pointer Ledger::loadByIndex (uint32 ledgerIndex)
{
Ledger::pointer ledger;
{
Database* db = getApp().getLedgerDB ()->getDB ();
DeprecatedScopedLock sl (getApp().getLedgerDB ()->getDBLock ());
SqliteStatement pSt (db->getSqliteDB (), "SELECT "
"LedgerHash,PrevHash,AccountSetHash,TransSetHash,TotalCoins,"
"ClosingTime,PrevClosingTime,CloseTimeRes,CloseFlags,LedgerSeq"
" from Ledgers WHERE LedgerSeq = ?;");
pSt.bind (1, ledgerIndex);
ledger = getSQL1 (&pSt);
}
if (ledger)
{
Ledger::getSQL2 (ledger);
ledger->setFull ();
}
return ledger;
}
Ledger::pointer Ledger::loadByHash (uint256 const& ledgerHash)
{
Ledger::pointer ledger;
{
Database* db = getApp().getLedgerDB ()->getDB ();
DeprecatedScopedLock sl (getApp().getLedgerDB ()->getDBLock ());
SqliteStatement pSt (db->getSqliteDB (), "SELECT "
"LedgerHash,PrevHash,AccountSetHash,TransSetHash,TotalCoins,"
"ClosingTime,PrevClosingTime,CloseTimeRes,CloseFlags,LedgerSeq"
" from Ledgers WHERE LedgerHash = ?;");
pSt.bind (1, ledgerHash.GetHex ());
ledger = getSQL1 (&pSt);
}
if (ledger)
{
assert (ledger->getHash () == ledgerHash);
Ledger::getSQL2 (ledger);
ledger->setFull ();
}
return ledger;
}
#else
Ledger::pointer Ledger::loadByIndex (uint32 ledgerIndex)
{
// This is a low-level function with no caching
std::string sql = "SELECT * from Ledgers WHERE LedgerSeq='";
sql.append (lexicalCastThrow <std::string> (ledgerIndex));
sql.append ("';");
return getSQL (sql);
}
Ledger::pointer Ledger::loadByHash (uint256 const& ledgerHash)
{
// This is a low-level function with no caching and only gets accepted ledgers
std::string sql = "SELECT * from Ledgers WHERE LedgerHash='";
sql.append (ledgerHash.GetHex ());
sql.append ("';");
return getSQL (sql);
}
#endif
Ledger::pointer Ledger::getSQL (const std::string& sql)
{
// only used with sqlite3 prepared statements not used
uint256 ledgerHash, prevHash, accountHash, transHash;
uint64 totCoins;
uint32 closingTime, prevClosingTime, ledgerSeq;
int closeResolution;
unsigned closeFlags;
std::string hash;
{
Database* db = getApp().getLedgerDB ()->getDB ();
DeprecatedScopedLock sl (getApp().getLedgerDB ()->getDBLock ());
if (!db->executeSQL (sql) || !db->startIterRows ())
return Ledger::pointer ();
db->getStr ("LedgerHash", hash);
ledgerHash.SetHexExact (hash);
db->getStr ("PrevHash", hash);
prevHash.SetHexExact (hash);
db->getStr ("AccountSetHash", hash);
accountHash.SetHexExact (hash);
db->getStr ("TransSetHash", hash);
transHash.SetHexExact (hash);
totCoins = db->getBigInt ("TotalCoins");
closingTime = db->getBigInt ("ClosingTime");
prevClosingTime = db->getBigInt ("PrevClosingTime");
closeResolution = db->getBigInt ("CloseTimeRes");
closeFlags = db->getBigInt ("CloseFlags");
ledgerSeq = db->getBigInt ("LedgerSeq");
db->endIterRows ();
}
// CAUTION: code below appears in two places
bool loaded;
Ledger::pointer ret (new Ledger (prevHash, transHash, accountHash, totCoins,
closingTime, prevClosingTime, closeFlags, closeResolution, ledgerSeq, loaded));
if (!loaded)
return Ledger::pointer ();
ret->setClosed ();
if (getApp().getOPs ().haveLedger (ledgerSeq))
{
ret->setAccepted ();
ret->setValidated ();
}
if (ret->getHash () != ledgerHash)
{
if (ShouldLog (lsERROR, Ledger))
{
Log (lsERROR) << "Failed on ledger";
Json::Value p;
ret->addJson (p, LEDGER_JSON_FULL);
Log (lsERROR) << p;
}
assert (false);
return Ledger::pointer ();
}
WriteLog (lsTRACE, Ledger) << "Loaded ledger: " << ledgerHash;
return ret;
}
Ledger::pointer Ledger::getSQL1 (SqliteStatement* stmt)
{
int iRet = stmt->step ();
if (stmt->isDone (iRet))
return Ledger::pointer ();
if (!stmt->isRow (iRet))
{
WriteLog (lsINFO, Ledger) << "Ledger not found: " << iRet << " = " << stmt->getError (iRet);
return Ledger::pointer ();
}
uint256 ledgerHash, prevHash, accountHash, transHash;
uint64 totCoins;
uint32 closingTime, prevClosingTime, ledgerSeq;
int closeResolution;
unsigned closeFlags;
ledgerHash.SetHexExact (stmt->peekString (0));
prevHash.SetHexExact (stmt->peekString (1));
accountHash.SetHexExact (stmt->peekString (2));
transHash.SetHexExact (stmt->peekString (3));
totCoins = stmt->getInt64 (4);
closingTime = stmt->getUInt32 (5);
prevClosingTime = stmt->getUInt32 (6);
closeResolution = stmt->getUInt32 (7);
closeFlags = stmt->getUInt32 (8);
ledgerSeq = stmt->getUInt32 (9);
// CAUTION: code below appears in two places
bool loaded;
Ledger::pointer ret (new Ledger (prevHash, transHash, accountHash, totCoins,
closingTime, prevClosingTime, closeFlags, closeResolution, ledgerSeq, loaded));
if (!loaded)
return Ledger::pointer ();
return ret;
}
void Ledger::getSQL2 (Ledger::ref ret)
{
ret->setClosed ();
ret->setImmutable ();
if (getApp().getOPs ().haveLedger (ret->getLedgerSeq ()))
ret->setAccepted ();
WriteLog (lsTRACE, Ledger) << "Loaded ledger: " << ret->getHash ().GetHex ();
}
uint256 Ledger::getHashByIndex (uint32 ledgerIndex)
{
uint256 ret;
std::string sql = "SELECT LedgerHash FROM Ledgers INDEXED BY SeqLedger WHERE LedgerSeq='";
sql.append (lexicalCastThrow <std::string> (ledgerIndex));
sql.append ("';");
std::string hash;
{
Database* db = getApp().getLedgerDB ()->getDB ();
DeprecatedScopedLock sl (getApp().getLedgerDB ()->getDBLock ());
if (!db->executeSQL (sql) || !db->startIterRows ())
return ret;
db->getStr ("LedgerHash", hash);
db->endIterRows ();
}
ret.SetHexExact (hash);
return ret;
}
bool Ledger::getHashesByIndex (uint32 ledgerIndex, uint256& ledgerHash, uint256& parentHash)
{
#ifndef NO_SQLITE3_PREPARE
DatabaseCon* con = getApp().getLedgerDB ();
DeprecatedScopedLock sl (con->getDBLock ());
SqliteStatement pSt (con->getDB ()->getSqliteDB (),
"SELECT LedgerHash,PrevHash FROM Ledgers INDEXED BY SeqLedger Where LedgerSeq = ?;");
pSt.bind (1, ledgerIndex);
int ret = pSt.step ();
if (pSt.isDone (ret))
{
WriteLog (lsTRACE, Ledger) << "Don't have ledger " << ledgerIndex;
return false;
}
if (!pSt.isRow (ret))
{
assert (false);
WriteLog (lsFATAL, Ledger) << "Unexpected statement result " << ret;
return false;
}
ledgerHash.SetHexExact (pSt.peekString (0));
parentHash.SetHexExact (pSt.peekString (1));
return true;
#else
std::string sql = "SELECT LedgerHash,PrevHash FROM Ledgers WHERE LedgerSeq='";
sql.append (lexicalCastThrow <std::string> (ledgerIndex));
sql.append ("';");
std::string hash, prevHash;
{
Database* db = getApp().getLedgerDB ()->getDB ();
DeprecatedScopedLock sl (getApp().getLedgerDB ()->getDBLock ());
if (!db->executeSQL (sql) || !db->startIterRows ())
return false;
db->getStr ("LedgerHash", hash);
db->getStr ("PrevHash", prevHash);
db->endIterRows ();
}
ledgerHash.SetHexExact (hash);
parentHash.SetHexExact (prevHash);
assert (ledgerHash.isNonZero () && ((ledgerIndex == 0) || parentHash.isNonZero ()));
return true;
#endif
}
std::map< uint32, std::pair<uint256, uint256> > Ledger::getHashesByIndex (uint32 minSeq, uint32 maxSeq)
{
std::map< uint32, std::pair<uint256, uint256> > ret;
std::string sql = "SELECT LedgerSeq,LedgerHash,PrevHash FROM Ledgers WHERE LedgerSeq >= ";
sql.append (lexicalCastThrow <std::string> (minSeq));
sql.append (" AND LedgerSeq <= ");
sql.append (lexicalCastThrow <std::string> (maxSeq));
sql.append (";");
DatabaseCon* con = getApp().getLedgerDB ();
DeprecatedScopedLock sl (con->getDBLock ());
SqliteStatement pSt (con->getDB ()->getSqliteDB (), sql);
while (pSt.isRow (pSt.step ()))
{
std::pair<uint256, uint256>& hashes = ret[pSt.getUInt32 (0)];
hashes.first.SetHexExact (pSt.peekString (1));
hashes.second.SetHexExact (pSt.peekString (2));
}
return ret;
}
Ledger::pointer Ledger::getLastFullLedger ()
{
try
{
return getSQL ("SELECT * from Ledgers order by LedgerSeq desc limit 1;");
}
catch (SHAMapMissingNode& sn)
{
WriteLog (lsWARNING, Ledger) << "Database contains ledger with missing nodes: " << sn;
return Ledger::pointer ();
}
}
void Ledger::addJson (Json::Value& ret, int options)
{
ret["ledger"] = getJson (options);
}
Json::Value Ledger::getJson (int options)
{
Json::Value ledger (Json::objectValue);
bool bFull = isSetBit (options, LEDGER_JSON_FULL);
ScopedLockType sl (mLock, __FILE__, __LINE__);
ledger["seqNum"] = lexicalCastThrow <std::string> (mLedgerSeq); // DEPRECATED
ledger["parent_hash"] = mParentHash.GetHex ();
ledger["ledger_index"] = lexicalCastThrow <std::string> (mLedgerSeq);
if (mClosed || bFull)
{
if (mClosed)
ledger["closed"] = true;
ledger["hash"] = mHash.GetHex (); // DEPRECATED
ledger["totalCoins"] = lexicalCastThrow <std::string> (mTotCoins); // DEPRECATED
ledger["ledger_hash"] = mHash.GetHex ();
ledger["transaction_hash"] = mTransHash.GetHex ();
ledger["account_hash"] = mAccountHash.GetHex ();
ledger["accepted"] = mAccepted;
ledger["total_coins"] = lexicalCastThrow <std::string> (mTotCoins);
if (mCloseTime != 0)
{
ledger["close_time"] = mCloseTime;
ledger["close_time_human"] = boost::posix_time::to_simple_string (ptFromSeconds (mCloseTime));
ledger["close_time_resolution"] = mCloseResolution;
if ((mCloseFlags & sLCF_NoConsensusTime) != 0)
ledger["close_time_estimated"] = true;
}
}
else
{
ledger["closed"] = false;
}
if (mTransactionMap && (bFull || isSetBit (options, LEDGER_JSON_DUMP_TXRP)))
{
Json::Value txns (Json::arrayValue);
SHAMapTreeNode::TNType type;
SHAMap::ScopedLockType l (mTransactionMap->peekMutex (), __FILE__, __LINE__);
for (SHAMapItem::pointer item = mTransactionMap->peekFirstItem (type); !!item;
item = mTransactionMap->peekNextItem (item->getTag (), type))
{
if (bFull || isSetBit (options, LEDGER_JSON_EXPAND))
{
if (type == SHAMapTreeNode::tnTRANSACTION_NM)
{
SerializerIterator sit (item->peekSerializer ());
SerializedTransaction txn (sit);
txns.append (txn.getJson (0));
}
else if (type == SHAMapTreeNode::tnTRANSACTION_MD)
{
SerializerIterator sit (item->peekSerializer ());
Serializer sTxn (sit.getVL ());
SerializerIterator tsit (sTxn);
SerializedTransaction txn (tsit);
TransactionMetaSet meta (item->getTag (), mLedgerSeq, sit.getVL ());
Json::Value txJson = txn.getJson (0);
txJson["metaData"] = meta.getJson (0);
txns.append (txJson);
}
else
{
Json::Value error = Json::objectValue;
error[item->getTag ().GetHex ()] = type;
txns.append (error);
}
}
else txns.append (item->getTag ().GetHex ());
}
ledger["transactions"] = txns;
}
if (mAccountStateMap && (bFull || isSetBit (options, LEDGER_JSON_DUMP_STATE)))
{
Json::Value state (Json::arrayValue);
SHAMap::ScopedLockType l (mAccountStateMap->peekMutex (), __FILE__, __LINE__);
for (SHAMapItem::pointer item = mAccountStateMap->peekFirstItem (); !!item;
item = mAccountStateMap->peekNextItem (item->getTag ()))
{
if (bFull || isSetBit (options, LEDGER_JSON_EXPAND))
{
SerializerIterator sit (item->peekSerializer ());
SerializedLedgerEntry sle (sit, item->getTag ());
state.append (sle.getJson (0));
}
else
state.append (item->getTag ().GetHex ());
}
ledger["accountState"] = state;
}
return ledger;
}
void Ledger::setAcquiring (void)
{
if (!mTransactionMap || !mAccountStateMap) throw std::runtime_error ("invalid map");
mTransactionMap->setSynching ();
mAccountStateMap->setSynching ();
}
bool Ledger::isAcquiring (void)
{
return isAcquiringTx () || isAcquiringAS ();
}
bool Ledger::isAcquiringTx (void)
{
return mTransactionMap->isSynching ();
}
bool Ledger::isAcquiringAS (void)
{
return mAccountStateMap->isSynching ();
}
boost::posix_time::ptime Ledger::getCloseTime () const
{
return ptFromSeconds (mCloseTime);
}
void Ledger::setCloseTime (boost::posix_time::ptime ptm)
{
assert (!mImmutable);
mCloseTime = iToSeconds (ptm);
}
// XXX Use shared locks where possible?
LedgerStateParms Ledger::writeBack (LedgerStateParms parms, SLE::ref entry)
{
SHAMap::ScopedLockType l (mAccountStateMap->peekMutex (), __FILE__, __LINE__);
bool create = false;
if (!mAccountStateMap->hasItem (entry->getIndex ()))
{
if ((parms & lepCREATE) == 0)
{
Log (lsERROR) << "WriteBack non-existent node without create";
return lepMISSING;
}
create = true;
}
SHAMapItem::pointer item = boost::make_shared<SHAMapItem> (entry->getIndex ());
entry->add (item->peekSerializer ());
if (create)
{
assert (!mAccountStateMap->hasItem (entry->getIndex ()));
if (!mAccountStateMap->addGiveItem (item, false, false))
{
assert (false);
return lepERROR;
}
return lepCREATED;
}
if (!mAccountStateMap->updateGiveItem (item, false, false))
{
assert (false);
return lepERROR;
}
return lepOKAY;
}
SLE::pointer Ledger::getSLE (uint256 const& uHash)
{
SHAMapItem::pointer node = mAccountStateMap->peekItem (uHash);
if (!node)
return SLE::pointer ();
return boost::make_shared<SLE> (node->peekSerializer (), node->getTag ());
}
SLE::pointer Ledger::getSLEi (uint256 const& uId)
{
uint256 hash;
SHAMap::ScopedLockType sl (mAccountStateMap->peekMutex (), __FILE__, __LINE__);
SHAMapItem::pointer node = mAccountStateMap->peekItem (uId, hash);
if (!node)
return SLE::pointer ();
SLE::pointer ret = getApp().getSLECache ().fetch (hash);
if (!ret)
{
ret = boost::make_shared<SLE> (node->peekSerializer (), node->getTag ());
ret->setImmutable ();
getApp().getSLECache ().canonicalize (hash, ret);
}
return ret;
}
void Ledger::visitAccountItems (const uint160& accountID, FUNCTION_TYPE<void (SLE::ref)> func)
{
// Visit each item in this account's owner directory
uint256 rootIndex = Ledger::getOwnerDirIndex (accountID);
uint256 currentIndex = rootIndex;
while (1)
{
SLE::pointer ownerDir = getSLEi (currentIndex);
if (!ownerDir || (ownerDir->getType () != ltDIR_NODE))
return;
BOOST_FOREACH (uint256 const & uNode, ownerDir->getFieldV256 (sfIndexes).peekValue ())
{
func (getSLEi (uNode));
}
uint64 uNodeNext = ownerDir->getFieldU64 (sfIndexNext);
if (!uNodeNext)
return;
currentIndex = Ledger::getDirNodeIndex (rootIndex, uNodeNext);
}
}
/*
// VFALCO: A proof of concept for making an iterator instead of a visitor
class AccountItemIterator
{
public:
explicit AccountItemIterator (uint160 const& accountID)
{
// Convert the account ID to the root hash
//
m_rootKey = Ledger::getOwnerDirIndex (accountID);
// Start iterating from the root
//
m_currentKey = rootKey;
}
SerializedLedgerEntry::ref operator* () const
{
return m_currentEntry;
}
SerializedLedgerEntry::ref end () const
{
return s_end;
}
AccountItemIterator& operator++ (int)
{
}
private:
static SerializedLedgerEntry s_end;
uint256 m_rootKey;
uint256 m_currentKey;
SerializedLedgerEntry::pointer m_currentEntry;
}
// typedef const boost::shared_ptr<SerializedLedgerEntry>& ref;
*/
uint256 Ledger::getFirstLedgerIndex ()
{
SHAMapItem::pointer node = mAccountStateMap->peekFirstItem ();
return node ? node->getTag () : uint256 ();
}
uint256 Ledger::getLastLedgerIndex ()
{
SHAMapItem::pointer node = mAccountStateMap->peekLastItem ();
return node ? node->getTag () : uint256 ();
}
uint256 Ledger::getNextLedgerIndex (uint256 const& uHash)
{
SHAMapItem::pointer node = mAccountStateMap->peekNextItem (uHash);
return node ? node->getTag () : uint256 ();
}
uint256 Ledger::getNextLedgerIndex (uint256 const& uHash, uint256 const& uEnd)
{
SHAMapItem::pointer node = mAccountStateMap->peekNextItem (uHash);
if ((!node) || (node->getTag () > uEnd))
return uint256 ();
return node->getTag ();
}
uint256 Ledger::getPrevLedgerIndex (uint256 const& uHash)
{
SHAMapItem::pointer node = mAccountStateMap->peekPrevItem (uHash);
return node ? node->getTag () : uint256 ();
}
uint256 Ledger::getPrevLedgerIndex (uint256 const& uHash, uint256 const& uBegin)
{
SHAMapItem::pointer node = mAccountStateMap->peekNextItem (uHash);
if ((!node) || (node->getTag () < uBegin))
return uint256 ();
return node->getTag ();
}
SLE::pointer Ledger::getASNodeI (uint256 const& nodeID, LedgerEntryType let)
{
SLE::pointer node = getSLEi (nodeID);
if (node && (node->getType () != let))
node.reset ();
return node;
}
SLE::pointer Ledger::getASNode (LedgerStateParms& parms, uint256 const& nodeID,
LedgerEntryType let )
{
SHAMapItem::pointer account = mAccountStateMap->peekItem (nodeID);
if (!account)
{
if ( (parms & lepCREATE) == 0 )
{
parms = lepMISSING;
return SLE::pointer ();
}
parms = parms | lepCREATED | lepOKAY;
SLE::pointer sle = boost::make_shared<SLE> (let, nodeID);
return sle;
}
SLE::pointer sle =
boost::make_shared<SLE> (account->peekSerializer (), nodeID);
if (sle->getType () != let)
{
// maybe it's a currency or something
parms = parms | lepWRONGTYPE;
return SLE::pointer ();
}
parms = parms | lepOKAY;
return sle;
}
SLE::pointer Ledger::getAccountRoot (const uint160& accountID)
{
return getASNodeI (getAccountRootIndex (accountID), ltACCOUNT_ROOT);
}
SLE::pointer Ledger::getAccountRoot (const RippleAddress& naAccountID)
{
return getASNodeI (getAccountRootIndex (naAccountID.getAccountID ()), ltACCOUNT_ROOT);
}
//
// Directory
//
SLE::pointer Ledger::getDirNode (uint256 const& uNodeIndex)
{
return getASNodeI (uNodeIndex, ltDIR_NODE);
}
//
// Generator Map
//
SLE::pointer Ledger::getGenerator (const uint160& uGeneratorID)
{
return getASNodeI (getGeneratorIndex (uGeneratorID), ltGENERATOR_MAP);
}
//
// Nickname
//
SLE::pointer Ledger::getNickname (uint256 const& uNickname)
{
return getASNodeI (uNickname, ltNICKNAME);
}
//
// Offer
//
SLE::pointer Ledger::getOffer (uint256 const& uIndex)
{
return getASNodeI (uIndex, ltOFFER);
}
//
// Ripple State
//
SLE::pointer Ledger::getRippleState (uint256 const& uNode)
{
return getASNodeI (uNode, ltRIPPLE_STATE);
}
// For an entry put in the 64 bit index or quality.
uint256 Ledger::getQualityIndex (uint256 const& uBase, const uint64 uNodeDir)
{
// Indexes are stored in big endian format: they print as hex as stored.
// Most significant bytes are first. Least significant bytes represent adjacent entries.
// We place uNodeDir in the 8 right most bytes to be adjacent.
// Want uNodeDir in big endian format so ++ goes to the next entry for indexes.
uint256 uNode (uBase);
((uint64*) uNode.end ())[-1] = htobe64 (uNodeDir);
return uNode;
}
// Return the last 64 bits.
uint64 Ledger::getQuality (uint256 const& uBase)
{
return be64toh (((uint64*) uBase.end ())[-1]);
}
uint256 Ledger::getQualityNext (uint256 const& uBase)
{
static uint256 uNext ("10000000000000000");
uint256 uResult = uBase;
uResult += uNext;
return uResult;
}
uint256 Ledger::getAccountRootIndex (const uint160& uAccountID)
{
Serializer s (22);
s.add16 (spaceAccount); // 2
s.add160 (uAccountID); // 20
return s.getSHA512Half ();
}
uint256 Ledger::getLedgerFeeIndex ()
{
// get the index of the node that holds the fee schedul
Serializer s (2);
s.add16 (spaceFee);
return s.getSHA512Half ();
}
uint256 Ledger::getLedgerFeatureIndex ()
{
// get the index of the node that holds the last 256 ledgers
Serializer s (2);
s.add16 (spaceFeature);
return s.getSHA512Half ();
}
uint256 Ledger::getLedgerHashIndex ()
{
// get the index of the node that holds the last 256 ledgers
Serializer s (2);
s.add16 (spaceSkipList);
return s.getSHA512Half ();
}
uint256 Ledger::getLedgerHashIndex (uint32 desiredLedgerIndex)
{
// get the index of the node that holds the set of 256 ledgers that includes this ledger's hash
// (or the first ledger after it if it's not a multiple of 256)
Serializer s (6);
s.add16 (spaceSkipList);
s.add32 (desiredLedgerIndex >> 16);
return s.getSHA512Half ();
}
uint256 Ledger::getLedgerHash (uint32 ledgerIndex)
{
// return the hash of the specified ledger, 0 if not available
// easy cases
if (ledgerIndex > mLedgerSeq)
{
WriteLog (lsWARNING, Ledger) << "Can't get seq " << ledgerIndex << " from " << mLedgerSeq << " future";
return uint256 ();
}
if (ledgerIndex == mLedgerSeq)
return getHash ();
if (ledgerIndex == (mLedgerSeq - 1))
return mParentHash;
// within 256
int diff = mLedgerSeq - ledgerIndex;
if (diff <= 256)
{
SLE::pointer hashIndex = getSLEi (getLedgerHashIndex ());
if (hashIndex)
{
assert (hashIndex->getFieldU32 (sfLastLedgerSequence) == (mLedgerSeq - 1));
STVector256 vec = hashIndex->getFieldV256 (sfHashes);
if (vec.size () >= diff)
return vec.at (vec.size () - diff);
WriteLog (lsWARNING, Ledger) << "Ledger " << mLedgerSeq << " missing hash for " << ledgerIndex
<< " (" << vec.size () << "," << diff << ")";
}
else
{
WriteLog (lsWARNING, Ledger) << "Ledger " << mLedgerSeq << ":" << getHash () << " missing normal list";
}
}
if ((ledgerIndex & 0xff) != 0)
{
WriteLog (lsWARNING, Ledger) << "Can't get seq " << ledgerIndex << " from " << mLedgerSeq << " past";
return uint256 ();
}
// in skiplist
SLE::pointer hashIndex = getSLEi (getLedgerHashIndex (ledgerIndex));
if (hashIndex)
{
int lastSeq = hashIndex->getFieldU32 (sfLastLedgerSequence);
assert (lastSeq >= ledgerIndex);
assert ((lastSeq & 0xff) == 0);
int sDiff = (lastSeq - ledgerIndex) >> 8;
STVector256 vec = hashIndex->getFieldV256 (sfHashes);
if (vec.size () > sDiff)
return vec.at (vec.size () - sDiff - 1);
}
WriteLog (lsWARNING, Ledger) << "Can't get seq " << ledgerIndex << " from " << mLedgerSeq << " error";
return uint256 ();
}
std::vector< std::pair<uint32, uint256> > Ledger::getLedgerHashes ()
{
std::vector< std::pair<uint32, uint256> > ret;
SLE::pointer hashIndex = getSLEi (getLedgerHashIndex ());
if (hashIndex)
{
STVector256 vec = hashIndex->getFieldV256 (sfHashes);
int size = vec.size ();
ret.reserve (size);
uint32 seq = hashIndex->getFieldU32 (sfLastLedgerSequence) - size;
for (int i = 0; i < size; ++i)
ret.push_back (std::make_pair (++seq, vec.at (i)));
}
return ret;
}
std::vector<uint256> Ledger::getLedgerFeatures ()
{
std::vector<uint256> usFeatures;
SLE::pointer sleFeatures = getSLEi (getLedgerFeatureIndex ());
if (sleFeatures)
usFeatures = sleFeatures->getFieldV256 (sfFeatures).peekValue ();
return usFeatures;
}
// XRP to XRP not allowed.
// Currencies must have appropriate issuer.
// Currencies or accounts must differ.
bool Ledger::isValidBook (const uint160& uTakerPaysCurrency, const uint160& uTakerPaysIssuerID,
const uint160& uTakerGetsCurrency, const uint160& uTakerGetsIssuerID)
{
if (uTakerPaysCurrency.isZero ())
{
// XRP in
if (uTakerPaysIssuerID.isNonZero ()) // XRP cannot have an issuer
return false;
if (uTakerGetsCurrency.isZero ()) // XRP to XRP not allowed
return false;
if (uTakerGetsIssuerID.isZero ()) // non-XRP must have issuer
return false;
return true;
}
// non-XRP in
if (uTakerPaysIssuerID.isZero ()) // non-XRP must have issuer
return false;
if (uTakerGetsCurrency.isZero ()) // non-XRP to XRP
{
if (uTakerGetsIssuerID.isNonZero ()) // XRP cannot have issuer
return false;
}
else // non-XRP to non-XRP
{
if ((uTakerPaysCurrency == uTakerGetsCurrency) && (uTakerGetsIssuerID == uTakerPaysIssuerID))
return false; // Input and output cannot be identical
}
return true;
}
uint256 Ledger::getBookBase (const uint160& uTakerPaysCurrency, const uint160& uTakerPaysIssuerID,
const uint160& uTakerGetsCurrency, const uint160& uTakerGetsIssuerID)
{
Serializer s (82);
s.add16 (spaceBookDir); // 2
s.add160 (uTakerPaysCurrency); // 20
s.add160 (uTakerGetsCurrency); // 20
s.add160 (uTakerPaysIssuerID); // 20
s.add160 (uTakerGetsIssuerID); // 20
uint256 uBaseIndex = getQualityIndex (s.getSHA512Half ()); // Return with quality 0.
WriteLog (lsTRACE, Ledger) << boost::str (boost::format ("getBookBase(%s,%s,%s,%s) = %s")
% STAmount::createHumanCurrency (uTakerPaysCurrency)
% RippleAddress::createHumanAccountID (uTakerPaysIssuerID)
% STAmount::createHumanCurrency (uTakerGetsCurrency)
% RippleAddress::createHumanAccountID (uTakerGetsIssuerID)
% uBaseIndex.ToString ());
assert (isValidBook (uTakerPaysCurrency, uTakerPaysIssuerID, uTakerGetsCurrency, uTakerGetsIssuerID));
return uBaseIndex;
}
uint256 Ledger::getDirNodeIndex (uint256 const& uDirRoot, const uint64 uNodeIndex)
{
if (uNodeIndex)
{
Serializer s (42);
s.add16 (spaceDirNode); // 2
s.add256 (uDirRoot); // 32
s.add64 (uNodeIndex); // 8
return s.getSHA512Half ();
}
else
{
return uDirRoot;
}
}
uint256 Ledger::getGeneratorIndex (const uint160& uGeneratorID)
{
Serializer s (22);
s.add16 (spaceGenerator); // 2
s.add160 (uGeneratorID); // 20
return s.getSHA512Half ();
}
// What is important:
// --> uNickname: is a Sha256
// <-- SHA512/2: for consistency and speed in generating indexes.
uint256 Ledger::getNicknameIndex (uint256 const& uNickname)
{
Serializer s (34);
s.add16 (spaceNickname); // 2
s.add256 (uNickname); // 32
return s.getSHA512Half ();
}
uint256 Ledger::getOfferIndex (const uint160& uAccountID, uint32 uSequence)
{
Serializer s (26);
s.add16 (spaceOffer); // 2
s.add160 (uAccountID); // 20
s.add32 (uSequence); // 4
return s.getSHA512Half ();
}
uint256 Ledger::getOwnerDirIndex (const uint160& uAccountID)
{
Serializer s (22);
s.add16 (spaceOwnerDir); // 2
s.add160 (uAccountID); // 20
return s.getSHA512Half ();
}
uint256 Ledger::getRippleStateIndex (const RippleAddress& naA, const RippleAddress& naB, const uint160& uCurrency)
{
uint160 uAID = naA.getAccountID ();
uint160 uBID = naB.getAccountID ();
bool bAltB = uAID < uBID;
Serializer s (62);
s.add16 (spaceRipple); // 2
s.add160 (bAltB ? uAID : uBID); // 20
s.add160 (bAltB ? uBID : uAID); // 20
s.add160 (uCurrency); // 20
return s.getSHA512Half ();
}
bool Ledger::walkLedger ()
{
std::vector <SHAMapMissingNode> missingNodes1;
std::vector <SHAMapMissingNode> missingNodes2;
mAccountStateMap->walkMap (missingNodes1, 32);
if (ShouldLog (lsINFO, Ledger) && !missingNodes1.empty ())
{
Log (lsINFO) << missingNodes1.size () << " missing account node(s)";
Log (lsINFO) << "First: " << missingNodes1[0];
}
mTransactionMap->walkMap (missingNodes2, 32);
if (ShouldLog (lsINFO, Ledger) && !missingNodes2.empty ())
{
Log (lsINFO) << missingNodes2.size () << " missing transaction node(s)";
Log (lsINFO) << "First: " << missingNodes2[0];
}
return missingNodes1.empty () && missingNodes2.empty ();
}
bool Ledger::assertSane ()
{
if (mHash.isNonZero () &&
mAccountHash.isNonZero () &&
mAccountStateMap &&
mTransactionMap &&
(mAccountHash == mAccountStateMap->getHash ()) &&
(mTransHash == mTransactionMap->getHash ()))
{
return true;
}
Log (lsFATAL) << "ledger is not sane";
Json::Value j = getJson (0);
j ["accountTreeHash"] = mAccountHash.GetHex ();
j ["transTreeHash"] = mTransHash.GetHex ();
assert (false);
return false;
}
// update the skip list with the information from our previous ledger
void Ledger::updateSkipList ()
{
if (mLedgerSeq == 0) // genesis ledger has no previous ledger
return;
uint32 prevIndex = mLedgerSeq - 1;
// update record of every 256th ledger
if ((prevIndex & 0xff) == 0)
{
uint256 hash = getLedgerHashIndex (prevIndex);
SLE::pointer skipList = getSLE (hash);
std::vector<uint256> hashes;
// VFALCO TODO Document this skip list concept
if (!skipList)
skipList = boost::make_shared<SLE> (ltLEDGER_HASHES, hash);
else
hashes = skipList->getFieldV256 (sfHashes).peekValue ();
assert (hashes.size () <= 256);
hashes.push_back (mParentHash);
skipList->setFieldV256 (sfHashes, STVector256 (hashes));
skipList->setFieldU32 (sfLastLedgerSequence, prevIndex);
if (writeBack (lepCREATE, skipList) == lepERROR)
{
assert (false);
}
}
// update record of past 256 ledger
uint256 hash = getLedgerHashIndex ();
SLE::pointer skipList = getSLE (hash);
std::vector <uint256> hashes;
if (!skipList)
{
skipList = boost::make_shared<SLE> (ltLEDGER_HASHES, hash);
}
else
{
hashes = skipList->getFieldV256 (sfHashes).peekValue ();
}
assert (hashes.size () <= 256);
if (hashes.size () == 256)
hashes.erase (hashes.begin ());
hashes.push_back (mParentHash);
skipList->setFieldV256 (sfHashes, STVector256 (hashes));
skipList->setFieldU32 (sfLastLedgerSequence, prevIndex);
if (writeBack (lepCREATE, skipList) == lepERROR)
{
assert (false);
}
}
uint32 Ledger::roundCloseTime (uint32 closeTime, uint32 closeResolution)
{
if (closeTime == 0)
return 0;
closeTime += (closeResolution / 2);
return closeTime - (closeTime % closeResolution);
}
bool Ledger::pendSaveValidated (bool isSynchronous, bool isCurrent)
{
if (!getApp().getHashRouter ().setFlag (getHash (), SF_SAVED))
{
WriteLog (lsDEBUG, Ledger) << "Double pend save for " << getLedgerSeq();
return false;
}
assert (isImmutable ());
{
StaticScopedLockType sl (sPendingSaveLock, __FILE__, __LINE__);
if (!sPendingSaves.insert(getLedgerSeq()).second)
{
WriteLog (lsDEBUG, Ledger) << "Pend save with seq in pending saves " << getLedgerSeq();
return false;
}
}
if (isSynchronous)
{
saveValidatedLedger(isCurrent);
}
else if (isCurrent)
{
getApp().getJobQueue ().addJob (jtPUBLEDGER, "Ledger::pendSave",
BIND_TYPE (&Ledger::saveValidatedLedgerAsync, shared_from_this (), P_1, isCurrent));
}
else
{
getApp().getJobQueue ().addJob (jtPUBOLDLEDGER, "Ledger::pendOldSave",
BIND_TYPE (&Ledger::saveValidatedLedgerAsync, shared_from_this (), P_1, isCurrent));
}
return true;
}
std::set<uint32> Ledger::getPendingSaves()
{
StaticScopedLockType sl (sPendingSaveLock, __FILE__, __LINE__);
return sPendingSaves;
}
void Ledger::ownerDirDescriber (SLE::ref sle, bool, const uint160& owner)
{
sle->setFieldAccount (sfOwner, owner);
}
void Ledger::qualityDirDescriber (SLE::ref sle, bool isNew,
const uint160& uTakerPaysCurrency, const uint160& uTakerPaysIssuer,
const uint160& uTakerGetsCurrency, const uint160& uTakerGetsIssuer,
const uint64& uRate)
{
sle->setFieldH160 (sfTakerPaysCurrency, uTakerPaysCurrency);
sle->setFieldH160 (sfTakerPaysIssuer, uTakerPaysIssuer);
sle->setFieldH160 (sfTakerGetsCurrency, uTakerGetsCurrency);
sle->setFieldH160 (sfTakerGetsIssuer, uTakerGetsIssuer);
sle->setFieldU64 (sfExchangeRate, uRate);
if (isNew)
getApp().getOrderBookDB().addOrderBook(uTakerPaysCurrency, uTakerGetsCurrency,
uTakerPaysIssuer, uTakerGetsIssuer);
}
void Ledger::initializeFees ()
{
mBaseFee = 0;
mReferenceFeeUnits = 0;
mReserveBase = 0;
mReserveIncrement = 0;
}
void Ledger::updateFees ()
{
mBaseFee = getConfig ().FEE_DEFAULT;
mReferenceFeeUnits = 10;
mReserveBase = getConfig ().FEE_ACCOUNT_RESERVE;
mReserveIncrement = getConfig ().FEE_OWNER_RESERVE;
LedgerStateParms p = lepNONE;
SLE::pointer sle = getASNode (p, Ledger::getLedgerFeeIndex (), ltFEE_SETTINGS);
if (!sle)
return;
if (sle->getFieldIndex (sfBaseFee) != -1)
mBaseFee = sle->getFieldU64 (sfBaseFee);
if (sle->getFieldIndex (sfReferenceFeeUnits) != -1)
mReferenceFeeUnits = sle->getFieldU32 (sfReferenceFeeUnits);
if (sle->getFieldIndex (sfReserveBase) != -1)
mReserveBase = sle->getFieldU32 (sfReserveBase);
if (sle->getFieldIndex (sfReserveIncrement) != -1)
mReserveIncrement = sle->getFieldU32 (sfReserveIncrement);
}
uint64 Ledger::scaleFeeBase (uint64 fee)
{
if (!mBaseFee)
updateFees ();
return getApp().getFeeTrack ().scaleFeeBase (fee, mBaseFee, mReferenceFeeUnits);
}
uint64 Ledger::scaleFeeLoad (uint64 fee, bool bAdmin)
{
if (!mBaseFee)
updateFees ();
return getApp().getFeeTrack ().scaleFeeLoad (fee, mBaseFee, mReferenceFeeUnits, bAdmin);
}
std::vector<uint256> Ledger::getNeededTransactionHashes (int max, SHAMapSyncFilter* filter)
{
std::vector<uint256> ret;
if (mTransHash.isNonZero ())
{
if (mTransactionMap->getHash ().isZero ())
ret.push_back (mTransHash);
else
ret = mTransactionMap->getNeededHashes (max, filter);
}
return ret;
}
std::vector<uint256> Ledger::getNeededAccountStateHashes (int max, SHAMapSyncFilter* filter)
{
std::vector<uint256> ret;
if (mAccountHash.isNonZero ())
{
if (mAccountStateMap->getHash ().isZero ())
ret.push_back (mAccountHash);
else
ret = mAccountStateMap->getNeededHashes (max, filter);
}
return ret;
}
//------------------------------------------------------------------------------
class LedgerTests : public UnitTest
{
public:
LedgerTests () : UnitTest ("Ledger", "ripple")
{
}
void runTest ()
{
beginTestCase ("uint256");
uint256 uBig ("D2DC44E5DC189318DB36EF87D2104CDF0A0FE3A4B698BEEE55038D7EA4C68000");
// VFALCO NOTE This fails in the original version as well.
expect (6125895493223874560 == Ledger::getQuality (uBig));
}
};
static LedgerTests ledgerTests;
Ledger::StaticLockType Ledger::sPendingSaveLock ("LedgerStatic", __FILE__, __LINE__);
std::set<uint32> Ledger::sPendingSaves;