static void updateHelper (SLE::ref entry,
hash_set< uint256 >& seen,
OrderBookDB::IssueToOrderBook& destMap,
OrderBookDB::IssueToOrderBook& sourceMap,
hash_set< Issue >& XDVBooks,
int& books)
{
if (entry->getType () == ltDIR_NODE &&
entry->isFieldPresent (sfExchangeRate) &&
entry->getFieldH256 (sfRootIndex) == entry->getIndex())
{
Book book;
book.in.currency.copyFrom (entry->getFieldH160 (sfTakerPaysCurrency));
book.in.account.copyFrom (entry->getFieldH160 (sfTakerPaysIssuer));
book.out.account.copyFrom (entry->getFieldH160 (sfTakerGetsIssuer));
book.out.currency.copyFrom (entry->getFieldH160 (sfTakerGetsCurrency));
uint256 index = getBookBase (book);
if (seen.insert (index).second)
{
auto orderBook = std::make_shared<OrderBook> (index, book);
sourceMap[book.in].push_back (orderBook);
destMap[book.out].push_back (orderBook);
if (isXDV(book.out))
XDVBooks.insert(book.in);
++books;
}
}
}
static void updateHelper (SLE::ref entry,
boost::unordered_set< uint256 >& seen,
boost::unordered_map< currencyIssuer_t, std::vector<OrderBook::pointer> >& destMap,
boost::unordered_map< currencyIssuer_t, std::vector<OrderBook::pointer> >& sourceMap,
boost::unordered_set< currencyIssuer_t >& XRPBooks,
int& books)
{
if ((entry->getType () == ltDIR_NODE) && (entry->isFieldPresent (sfExchangeRate)) &&
(entry->getFieldH256 (sfRootIndex) == entry->getIndex()))
{
const uint160& ci = entry->getFieldH160 (sfTakerPaysCurrency);
const uint160& co = entry->getFieldH160 (sfTakerGetsCurrency);
const uint160& ii = entry->getFieldH160 (sfTakerPaysIssuer);
const uint160& io = entry->getFieldH160 (sfTakerGetsIssuer);
uint256 index = Ledger::getBookBase (ci, ii, co, io);
if (seen.insert (index).second)
{
// VFALCO TODO Reduce the clunkiness of these parameter wrappers
OrderBook::pointer book = boost::make_shared<OrderBook> (boost::cref (index),
boost::cref (ci), boost::cref (co), boost::cref (ii), boost::cref (io));
sourceMap[currencyIssuer_ct (ci, ii)].push_back (book);
destMap[currencyIssuer_ct (co, io)].push_back (book);
if (co.isZero())
XRPBooks.insert(currencyIssuer_ct (ci, ii));
++books;
}
}
}
// Make sure an offer is still valid. If not, mark it unfunded.
bool OfferCreateTransactor::bValidOffer (
SLE::ref sleOffer,
const uint160& uOfferOwnerID,
const STAmount& saOfferPays,
const STAmount& saOfferGets,
const uint160& uTakerAccountID,
boost::unordered_set<uint256>& usOfferUnfundedFound,
boost::unordered_set<uint256>& usOfferUnfundedBecame,
boost::unordered_set<uint160>& usAccountTouched,
STAmount& saOfferFunds) // <--
{
bool bValid = false;
if (sleOffer->isFieldPresent (sfExpiration) && sleOffer->getFieldU32 (sfExpiration) <= mEngine->getLedger ()->getParentCloseTimeNC ())
{
// Offer is expired. Expired offers are considered unfunded. Delete it.
WriteLog (lsINFO, OfferCreateTransactor) << "bValidOffer: encountered expired offer";
usOfferUnfundedFound.insert (sleOffer->getIndex());
bValid = false;
}
else if (uOfferOwnerID == uTakerAccountID)
{
// Would take own offer. Consider old offer expired. Delete it.
WriteLog (lsINFO, OfferCreateTransactor) << "bValidOffer: encountered taker's own old offer";
usOfferUnfundedFound.insert (sleOffer->getIndex());
bValid = false;
}
else if (!saOfferGets.isPositive () || !saOfferPays.isPositive ())
{
// Offer has bad amounts. Consider offer expired. Delete it.
WriteLog (lsWARNING, OfferCreateTransactor) << boost::str (boost::format ("bValidOffer: BAD OFFER: saOfferPays=%s saOfferGets=%s")
% saOfferPays % saOfferGets);
usOfferUnfundedFound.insert (sleOffer->getIndex());
bValid = false;
}
else
{
WriteLog (lsTRACE, OfferCreateTransactor) << "bValidOffer: saOfferPays=" << saOfferPays.getFullText ();
saOfferFunds = mEngine->getNodes ().accountFunds (uOfferOwnerID, saOfferPays);
if (!saOfferFunds.isPositive ())
{
// Offer is unfunded, possibly due to previous balance action.
WriteLog (lsDEBUG, OfferCreateTransactor) << "bValidOffer: offer unfunded: delete";
boost::unordered_set<uint160>::iterator account = usAccountTouched.find (uOfferOwnerID);
if (account != usAccountTouched.end ())
{
// Previously touched account.
usOfferUnfundedBecame.insert (sleOffer->getIndex()); // Delete unfunded offer on success.
}
else
{
// Never touched source account.
usOfferUnfundedFound.insert (sleOffer->getIndex()); // Delete found unfunded offer when possible.
}
bValid = false;
}
else
{
bValid = true;
}
}
return bValid;
}
