Skip to content

feat: priority fee max refund #4903

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Draft
md0x wants to merge 1 commit into
base: master
Choose a base branch
from
Draft

feat: priority fee max refund #4903

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
37 changes: 33 additions & 4 deletions packages/affiliates/gas-rebate/VoterGasRebateV2.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@ const {
MAX_RETRIES,
RETRY_DELAY,
MIN_STAKED_TOKENS,
PRIORITY_FEE_CAP_GWEI,
} = process.env;

async function retryAsyncOperation<T>(
Expand Down Expand Up @@ -78,7 +79,12 @@ export async function run(): Promise<void> {
// Minimum UMA tokens staked to be eligible for a rebate
const minTokens = ethers.utils.parseEther(MIN_STAKED_TOKENS ? MIN_STAKED_TOKENS : "500");

// Priority fee cap in gwei (default 0.5 gwei)
const priorityFeeCapGwei = PRIORITY_FEE_CAP_GWEI ? Number(PRIORITY_FEE_CAP_GWEI) : 0.5;
const priorityFeeCapWei = ethers.utils.parseUnits(priorityFeeCapGwei.toString(), "gwei");

console.log("Minimum UMA tokens staked to be eligible for a rebate:", ethers.utils.formatEther(minTokens));
console.log("Priority fee cap:", priorityFeeCapGwei, "gwei");
console.log("Current time:", moment(currentDate).format());
console.log("Previous Month Start:", moment(prevMonthStart).format(), "& block", fromBlock);
console.log("Previous Month End:", moment(prevMonthEnd).format(), "& block", toBlock);
Expand All @@ -89,7 +95,7 @@ export async function run(): Promise<void> {
const searchConfig = {
fromBlock,
toBlock,
maxBlockLookBack: 20000,
maxBlockLookBack: 250,
};

// Find resolved events
Expand Down Expand Up @@ -166,14 +172,37 @@ export async function run(): Promise<void> {

console.log(
`In aggregate, refund ${commitEvents.length} commits and ${revealEvents.length} Reveals` +
` for a total of ${transactionsToRefund.length} transactions`
` for a total of ${transactionsToRefund.length} transactions`
);

const shareholderPayoutBN: { [address: string]: BigNumber } = {};
// Cache blocks to avoid fetching the same block multiple times
const blockCache: { [blockNumber: number]: any } = {};

// Now, traverse all transactions and calculate the rebate for each.
for (const transaction of transactionsToRefund) {
// Eth used is the gas used * the gas price.
const resultantRebate = transaction.gasUsed.mul(transaction.effectiveGasPrice);
// Get the block to extract base fee
let block = blockCache[transaction.blockNumber];
if (!block) {
block = await retryAsyncOperation(
async () => await voting.provider.getBlock(transaction.blockNumber)
);
blockCache[transaction.blockNumber] = block;
}

// Extract base fee from block (EIP-1559)
const baseFeePerGas = block.baseFeePerGas || BigNumber.from(0);

// Calculate priority fee: effectiveGasPrice - baseFeePerGas
const priorityFee = transaction.effectiveGasPrice.sub(baseFeePerGas);

// Cap the priority fee to the configured maximum
const cappedPriorityFee = priorityFee.gt(priorityFeeCapWei) ? priorityFeeCapWei : priorityFee;

// Calculate rebate: gasUsed * (baseFeePerGas + cappedPriorityFee)
const gasPriceForRebate = baseFeePerGas.add(cappedPriorityFee);
const resultantRebate = transaction.gasUsed.mul(gasPriceForRebate);

// Save the output to the shareholderPayout object. Append to existing value if it exists.
if (!shareholderPayoutBN[transaction.from]) shareholderPayoutBN[transaction.from] = BigNumber.from(0);
shareholderPayoutBN[transaction.from] = shareholderPayoutBN[transaction.from].add(resultantRebate);
Expand Down