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Add support for incrementally updating owner count.

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This commit is contained in:
Arthur Britto
2012-12-14 20:40:25 -08:00
parent 704b31e0f6
commit 12a4ce88ec
6 changed files with 111 additions and 16 deletions
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71
src/cpp/ripple/LedgerEntrySet.cpp
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@@ -486,6 +486,35 @@ void LedgerEntrySet::calcRawMeta(Serializer& s, TER result, uint32 index)
cLog(lsTRACE) << "Metadata:" << mSet.getJson(0);
}
TER LedgerEntrySet::dirCount(const uint256& uRootIndex, uint32& uCount)
{
uint64 uNodeDir = 0;
uCount = 0;
do
{
SLE::pointer sleNode = entryCache(ltDIR_NODE, Ledger::getDirNodeIndex(uRootIndex, uNodeDir));
if (sleNode)
{
uCount += sleNode->getFieldV256(sfIndexes).peekValue().size();
uNodeDir = sleNode->getFieldU64(sfIndexNext); // Get next node.
}
else if (uNodeDir)
{
cLog(lsWARNING) << "dirCount: no such node";
assert(false);
return tefBAD_LEDGER;
}
} while (uNodeDir);
return tesSUCCESS;
}
// <-- uNodeDir: For deletion, present to make dirDelete efficient.
// --> uRootIndex: The index of the base of the directory. Nodes are based off of this.
// --> uLedgerIndex: Value to add to directory.
@@ -814,11 +843,53 @@ bool LedgerEntrySet::dirNext(
return true;
}
// If there is a count, adjust the owner count by iAmount. Otherwise, compute the owner count and store it.
TER LedgerEntrySet::ownerCountAdjust(const uint160& uOwnerID, int iAmount, SLE::ref sleAccountRoot)
{
SLE::pointer sleHold = sleAccountRoot
? SLE::pointer()
: entryCache(ltACCOUNT_ROOT, Ledger::getAccountRootIndex(uOwnerID));
SLE::ref sleRoot = sleAccountRoot
? sleAccountRoot
: sleHold;
const bool bHaveOwnerCount = sleRoot->isFieldPresent(sfOwnerCount);
TER terResult;
if (bHaveOwnerCount)
{
const uint32 uOwnerCount = sleRoot->getFieldU32(sfOwnerCount);
sleRoot->setFieldU32(sfOwnerCount, uOwnerCount+iAmount);
terResult = tesSUCCESS;
}
else
{
uint32 uActualCount;
terResult = dirCount(Ledger::getOwnerDirIndex(uOwnerID), uActualCount);
if (tesSUCCESS == terResult)
{
sleRoot->setFieldU32(sfOwnerCount, uActualCount);
}
}
return terResult;
}
TER LedgerEntrySet::offerDelete(const SLE::pointer& sleOffer, const uint256& uOfferIndex, const uint160& uOwnerID)
{
uint64 uOwnerNode = sleOffer->getFieldU64(sfOwnerNode);
TER terResult = dirDelete(false, uOwnerNode, Ledger::getOwnerDirIndex(uOwnerID), uOfferIndex, false);
if (tesSUCCESS == terResult)
{
terResult = ownerCountAdjust(uOwnerID, -1);
}
if (tesSUCCESS == terResult)
{
uint256 uDirectory = sleOffer->getFieldH256(sfBookDirectory);