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Improve path filtering:

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1) Ignore paths with very low liquidity
2) Allow an extra filling path to be added if needed
This commit is contained in:
JoelKatz
2013-11-02 17:40:44 -07:00
parent 3296ac5628
commit 6b2f654a30
4 changed files with 64 additions and 19 deletions
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19
src/ripple_app/paths/PathRequest.cpp
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@@ -331,7 +331,8 @@ bool PathRequest::doUpdate (RippleLineCache::ref cache, bool fast)
currIssuer.first, currIssuer.second, saDstAmount, valid);
CondLog (!valid, lsINFO, PathRequest) << "PF request not valid";
if (valid && pf.findPaths (iLevel, 4, spsPaths))
STPath extraPath;
if (valid && pf.findPaths (iLevel, 4, spsPaths, extraPath))
{
LedgerEntrySet lesSandbox (cache->getLedger (), tapNONE);
std::vector<PathState::pointer> vpsExpanded;
@@ -343,9 +344,23 @@ bool PathRequest::doUpdate (RippleLineCache::ref cache, bool fast)
saMaxAmount.negate ();
WriteLog (lsDEBUG, PathRequest) << "Paths found, calling rippleCalc";
TER terResult = RippleCalc::rippleCalc (lesSandbox, saMaxAmountAct, saDstAmountAct,
vpsExpanded, saMaxAmount, saDstAmount, raDstAccount.getAccountID (), raSrcAccount.getAccountID (),
vpsExpanded, saMaxAmount, saDstAmount,
raDstAccount.getAccountID (), raSrcAccount.getAccountID (),
spsPaths, false, false, false, true);
if ((extraPath.size() > 0) && ((terResult == terNO_LINE) || (terResult == tecPATH_PARTIAL)))
{
WriteLog (lsDEBUG, PathRequest) << "Trying with an extra path element";
spsPaths.addPath(extraPath);
vpsExpanded.clear ();
terResult = RippleCalc::rippleCalc (lesSandbox, saMaxAmountAct, saDstAmountAct,
vpsExpanded, saMaxAmount, saDstAmount,
raDstAccount.getAccountID (), raSrcAccount.getAccountID (),
spsPaths, false, false, false, true);
WriteLog (lsDEBUG, PathRequest) << "Extra path element gives " << transHuman (terResult);
}
if (terResult == tesSUCCESS)
{
Json::Value jvEntry (Json::objectValue);