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Fixed mcd migration bug

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This commit is contained in:
Thrilok Kumar 2019-11-20 06:33:22 +05:30
parent 0daea98793
commit 5dc98ffa03
1 changed files with 7 additions and 6 deletions
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13
contracts/ProxyLogics/MCD/InstaMcdMigrate.sol
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@ -489,19 +489,21 @@ contract MigrateHelper is MCDResolver {
uint saiBal = tub.sai().balanceOf(saiJoin);
uint _wadTotal = tub.tab(cup);
uint feeAmt = 0;
// wad according to toConvert ratio
_wad = wmul(_wadTotal, toConvert);
// if migration is by debt method, Add fee(SAI) to _wad
if (payFeeWith == getSaiAddress()) {
uint mkrAmt = getFeeOfCdp(cup, _wad);
(, feeAmt) = getBestMkrSwap(getSaiAddress(), mkrAmt);
_wad = add(_wad, feeAmt);
(,uint feeAmt) = getBestMkrSwap(getSaiAddress(), getFeeOfCdp(cup, _wad));
if (saiBal < add(_wad, feeAmt)) {
(, uint totalFeeAmt) = getBestMkrSwap(getSaiAddress(), getFeeOfCdp(cup, _wadTotal));
uint _totalWadDebt = add(_wadTotal, totalFeeAmt);
maxConvert = sub(wdiv(saiBal, _totalWadDebt), 1000); // (saiBal / debt + fee) => toConvert
_wad = wmul(_wadTotal, maxConvert);
}
}
//if sai_join has enough sai to migrate.
if (saiBal < _wad) {
// set saiBal as wad amount And sub feeAmt(feeAmt > 0, when its debt method).
_wad = sub(saiBal, 100000);
@ -510,7 +512,6 @@ contract MigrateHelper is MCDResolver {
}
// ink according to maxConvert ratio.
_wad = sub(_wad, feeAmt);
_ink = wmul(tub.ink(cup), maxConvert);
}