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Restructure forward ripple through offers.

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This commit is contained in:
Arthur Britto
2012-09-01 17:24:14 -07:00
parent 60653a5108
commit 9329604836
2 changed files with 823 additions and 783 deletions
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1555
src/TransactionEngine.cpp
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51
src/TransactionEngine.h
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@@ -138,7 +138,11 @@ enum TransactionEngineParams
// Transaction can be retried, soft failures allowed
};
typedef struct {
class PaymentNode {
protected:
friend class TransactionEngine;
friend class PathState;
uint16 uFlags; // --> From path.
uint160 uAccountID; // --> Accounts: Recieving/sending account.
@@ -146,6 +150,8 @@ typedef struct {
// --- For offer's next has currency out.
uint160 uIssuerID; // --> Currency's issuer
STAmount saTransferRate; // Transfer rate for uIssuerID.
// Computed by Reverse.
STAmount saRevRedeem; // <-- Amount to redeem to next.
STAmount saRevIssue; // <-- Amount to issue to next limited by credit and outstanding IOUs.
@@ -157,7 +163,27 @@ typedef struct {
STAmount saFwdIssue; // <-- Amount node will issue to next.
// Issue isn't used by offers.
STAmount saFwdDeliver; // <-- Amount to deliver to next regardless of fee.
} paymentNode;
// For offers:
// Directory
uint256 uDirectTip; // Current directory.
uint256 uDirectEnd; // Next order book.
bool bDirectAdvance; // Need to advance directory.
SLE::pointer sleDirectDir;
STAmount saOfrRate; // For correct ratio.
// Node
bool bEntryAdvance; // Need to advance entry.
unsigned int uEntry;
uint256 uOfferIndex;
SLE::pointer sleOffer;
uint160 uOfrOwnerID;
bool bFundsDirty; // Need to refresh saOfferFunds, saTakerPays, & saTakerGets.
STAmount saOfferFunds;
STAmount saTakerPays;
STAmount saTakerGets;
};
// account id, currency id, issuer id :: node
typedef boost::tuple<uint160, uint160, uint160> aciSource;
@@ -165,9 +191,8 @@ typedef boost::unordered_map<aciSource, unsigned int> curIssuerNode; // Map
typedef boost::unordered_map<aciSource, unsigned int>::const_iterator curIssuerNodeConstIterator;
extern std::size_t hash_value(const aciSource& asValue);
// extern std::size_t hash_value(const boost::tuple<uint160, uint160, uint160>& bt);
// Hold a path state under incremental application.
// Holds a path state under incremental application.
class PathState
{
protected:
@@ -180,12 +205,13 @@ public:
typedef boost::shared_ptr<PathState> pointer;
TER terStatus;
std::vector<paymentNode> vpnNodes;
std::vector<PaymentNode> vpnNodes;
// When processing, don't want to complicate directory walking with deletion.
std::vector<uint256> vUnfundedBecame; // Offers that became unfunded or were completely consumed.
// First time working foward a funding source was mentioned for accounts. Source may only be used there.
// First time scanning foward, as part of path contruction, a funding source was mentioned for accounts. Source may only be
// used there.
curIssuerNode umForward; // Map of currency, issuer to node index.
// First time working in reverse a funding source was used.
@@ -310,10 +336,23 @@ protected:
PathState::pointer pathCreate(const STPath& spPath);
void pathNext(const PathState::pointer& pspCur, const int iPaths);
TER calcNode(const unsigned int uIndex, const PathState::pointer& pspCur, const bool bMultiQuality);
TER calcNodeRev(const unsigned int uIndex, const PathState::pointer& pspCur, const bool bMultiQuality);
TER calcNodeFwd(const unsigned int uIndex, const PathState::pointer& pspCur, const bool bMultiQuality);
TER calcNodeOfferRev(const unsigned int uIndex, const PathState::pointer& pspCur, const bool bMultiQuality);
TER calcNodeOfferFwd(const unsigned int uIndex, const PathState::pointer& pspCur, const bool bMultiQuality);
TER calcNodeAccountRev(const unsigned int uIndex, const PathState::pointer& pspCur, const bool bMultiQuality);
TER calcNodeAccountFwd(const unsigned int uIndex, const PathState::pointer& pspCur, const bool bMultiQuality);
TER calcNodeAdvance(const unsigned int uIndex, const PathState::pointer& pspCur, const bool bMultiQuality);
TER calcNodeDeliver(
const unsigned int uIndex,
const PathState::pointer& pspCur,
const bool bMultiQuality,
const uint160& uInAccountID,
const STAmount& saInFunds,
const STAmount& saInReq,
STAmount& saInAct,
STAmount& saInFees);
void calcNodeRipple(const uint32 uQualityIn, const uint32 uQualityOut,
const STAmount& saPrvReq, const STAmount& saCurReq,
STAmount& saPrvAct, STAmount& saCurAct);