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handle 0 collateralBalance #2

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handle 0 collateralBalance #2

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ca6ba15
handle 0 collateralBalance
jonhuth Sep 29, 2022
e932bba
added basic logging
jonhuth Oct 1, 2022
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18 changes: 15 additions & 3 deletions src/liquidatorBot/bot.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ const FRAXLEND_PAIR_HELPER_ADDRESS = '0x26fa88b783cE712a2Fa10E91296Caf3daAE0AB37
const provider = new ethers.providers.AlchemyProvider('homestead', process.env.MAINNET_KEY);

const main = async () => {
console.log('\nentering main...\n')
// Get list of pairs
const fraxlendPairDeployer = new ethers.Contract(FRAXLEND_DEPLOYER_ADDRESS, fraxlendPairDeployerAbi, provider);
const fraxlendPairAddresses = await fraxlendPairDeployer.getAllPairAddresses();
Expand Down Expand Up @@ -78,11 +79,18 @@ const checkPositionThenArb = async (
) => {
// Get some user accounting information
const [ , borrowShares, collateralBalance] = await fraxlendPairHelper.getUserSnapshot(pairAddress, borrowerAddress);


if (collateralBalance == 0) {
console.log('cant calculate LTV, collateralBalance is 0\n');
return;
}

// Calculate LTV
const userBorrowAmount = borrowShares.mul(totalBorrowAmount).div(totalBorrowShares);
console.log('userBorrowAmount: ', (Number(userBorrowAmount) / 1e18).toLocaleString('en-US', {style: 'currency', currency: 'USD', minimumFractionDigits:2}))
const userLTV = userBorrowAmount.mul(exchangeRate).div(BigInt(1e18)).mul(1e5).div(collateralBalance);
if (userLTV.gt(75000)) {
console.log('userLTV: ', (Number(userLTV) / 1e5).toLocaleString(undefined, {style: 'percent', minimumFractionDigits:2}), '\n')
if (userLTV.gt(75000)) { // a user with a current LTV > 75% is liquidatable
const fraxlendPair = new ethers.Contract(pairAddress, fraxlendPairAbi, new ethers.Wallet(process.env.PRIVATE_KEY, provider));
const blockInfo = await provider.getBlock(await provider.getBlockNumber());

Expand All @@ -93,4 +101,8 @@ const checkPositionThenArb = async (
}
}
};
main();
while (true) {

main();
await new Promise(r => setTimeout(r, 10000));
}