Merge branch 'book'

Conflicts: src/cpp/ripple/OrderBookDB.cpp src/cpp/ripple/OrderBookDB.h src/cpp/ripple/Pathfinder.cpp
2025-12-06 17:27:52 +00:00 · 2013-02-05 13:47:25 -08:00
parent 1b2c0b9242 eb27240610
commit e8b17ef082
15 changed files with 263 additions and 19 deletions
--- a/src/cpp/ripple/OrderBookDB.cpp
+++ b/src/cpp/ripple/OrderBookDB.cpp
@@ -5,9 +5,18 @@

 SETUP_LOG();

-// TODO: this would be way faster if we could just look under the order dirs
-OrderBookDB::OrderBookDB(Ledger::pointer ledger)
+OrderBookDB::OrderBookDB()
 {
+
+}
+
+// TODO: this would be way faster if we could just look under the order dirs
+void OrderBookDB::setup(Ledger::pointer ledger)
+{
+	mXRPOrders.clear();
+	mIssuerMap.clear();
+	mKnownMap.clear();
+
 	// walk through the entire ledger looking for orderbook entries
 	uint256 currentIndex = ledger->getFirstLedgerIndex();

@@ -70,4 +79,151 @@ void OrderBookDB::getBooks(const uint160& issuerID, const uint160& currencyID, s
 	}
 }

+BookListeners::pointer OrderBookDB::makeBookListeners(uint160 currencyIn, uint160 currencyOut, uint160 issuerIn, uint160 issuerOut)
+{
+	BookListeners::pointer ret=getBookListeners(currencyIn, currencyOut, issuerIn, issuerOut);
+	if(!ret)
+	{
+		ret=BookListeners::pointer(new BookListeners);
+		mListeners[issuerIn][issuerOut][currencyIn][currencyOut]=ret;
+	}
+	return(ret);
+}
+
+BookListeners::pointer OrderBookDB::getBookListeners(uint160 currencyIn, uint160 currencyOut, uint160 issuerIn, uint160 issuerOut)
+{
+	std::map<uint160, std::map<uint160, std::map<uint160, std::map<uint160, BookListeners::pointer> > > >::iterator it0=mListeners.find(issuerIn);
+	if(it0 != mListeners.end())
+	{
+		std::map<uint160, std::map<uint160, std::map<uint160, BookListeners::pointer> > >::iterator it1=(*it0).second.find(issuerOut);
+		if(it1 != (*it0).second.end())
+		{
+			std::map<uint160, std::map<uint160, BookListeners::pointer> >::iterator it2=(*it1).second.find(currencyIn);
+			if(it2 != (*it1).second.end())
+			{
+				std::map<uint160, BookListeners::pointer>::iterator it3=(*it2).second.find(currencyOut);
+				if(it3 != (*it2).second.end())
+				{
+					return( (*it3).second );
+				}
+			}
+		}
+	}
+	return(BookListeners::pointer());
+}
+
+/*
+"CreatedNode" : {
+"LedgerEntryType" : "Offer",
+"LedgerIndex" : "F353BF8A7DCE35EA2985596F4C8421E30EF3B9A21618566BFE0ED00B62A8A5AB",
+"NewFields" : {
+"Account" : "rB5TihdPbKgMrkFqrqUC3yLdE8hhv4BdeY",
+"BookDirectory" : "FF26BE244767D0EA9EFD523941439009E4185E4CBB918F714C08E1BC9BF04000",
+"Sequence" : 112,
+"TakerGets" : "400000000",
+"TakerPays" : {
+"currency" : "BTC",
+"issuer" : "r3kmLJN5D28dHuH8vZNUZpMC43pEHpaocV",
+"value" : "1"
+}
+}
+}
+
+"ModifiedNode" : {
+"FinalFields" : {
+"Account" : "rHTxKLzRbniScyQFGMb3NodmxA848W8dKM",
+"BookDirectory" : "407AF8FFDE71114B1981574FDDA9B0334572D56FC579735B4B0BD7A625405555",
+"BookNode" : "0000000000000000",
+"Flags" : 0,
+"OwnerNode" : "0000000000000000",
+"Sequence" : 32,
+"TakerGets" : "149900000000",
+"TakerPays" : {
+"currency" : "USD",
+"issuer" : "r9vbV3EHvXWjSkeQ6CAcYVPGeq7TuiXY2X",
+"value" : "49.96666666666667"
+}
+},
+"LedgerEntryType" : "Offer",
+"LedgerIndex" : "C60F8CC514208FA5F7BD03CF1B64B38B7183CD52318FCBBD3726350D4FE693B0",
+"PreviousFields" : {
+"TakerGets" : "150000000000",
+"TakerPays" : {
+"currency" : "USD",
+"issuer" : "r9vbV3EHvXWjSkeQ6CAcYVPGeq7TuiXY2X",
+"value" : "50"
+}
+},
+"PreviousTxnID" : "1A6AAE3F1AC5A8A7554A5ABC395D17FED5BF62CD90181AA8E4315EDFED4EDEB3",
+"PreviousTxnLgrSeq" : 140734
+}
+
+*/
+// Based on the meta, send the meta to the streams that are listening 
+// We need to determine which streams a given meta effects
+void OrderBookDB::processTxn(const SerializedTransaction& stTxn, TER terResult,TransactionMetaSet::pointer& meta,Json::Value& jvObj)
+{
+	if(terResult==tesSUCCESS)
+	{
+		// check if this is an offer or an offer cancel or a payment that consumes an offer
+		//check to see what the meta looks like
+		BOOST_FOREACH(STObject& node,meta->getNodes())
+		{
+			try{
+				if(node.getFieldU16(sfLedgerEntryType)==ltOFFER)
+				{
+					SField* field=NULL;
+
+					if(node.getFName() == sfModifiedNode)
+					{
+						field=&sfPreviousFields;
+					}else if(node.getFName() == sfCreatedNode)
+					{
+						field=&sfNewFields;
+					}
+
+					const STObject* previous = dynamic_cast<const STObject*>(node.peekAtPField(*field));
+					if(previous)
+					{
+						STAmount& takerGets = previous->getFieldAmount(sfTakerGets);
+						uint160 currencyOut=takerGets.getCurrency();
+						uint160 issuerOut=takerGets.getIssuer();
+
+						STAmount& takerPays = previous->getFieldAmount(sfTakerPays);
+						uint160 currencyIn=takerPays.getCurrency();
+						uint160 issuerIn=takerPays.getIssuer();
+
+						// determine the OrderBook
+						BookListeners::pointer book=getBookListeners(currencyIn,currencyOut,issuerIn,issuerOut);
+						if(book) book->publish(jvObj);
+					}
+				}
+			}catch(...)
+			{
+				cLog(lsINFO) << "Fields not found in OrderBookDB::processTxn";
+			}
+		}
+	}
+}
+
+void BookListeners::addSubscriber(InfoSub* sub)
+{
+	mListeners.insert(sub);
+}
+
+void BookListeners::removeSubscriber(InfoSub* sub)
+{
+	mListeners.erase(sub);
+}
+
+void BookListeners::publish(Json::Value& jvObj)
+{
+	//Json::Value jvObj=node.getJson(0);
+
+	BOOST_FOREACH(InfoSub* sub,mListeners)
+	{
+		sub->send(jvObj);
+	}
+}
+
 // vim:ts=4