Standalone Nova Fee Sweep Proposal

scripts/proposals/NovaFeeSweep/data.json

@@ -0,0 +1,6 @@
+{
+  "arbSysSendTxToL1Args": {
+    "l1Timelock": "0xE6841D92B0C345144506576eC13ECf5103aC7f49",
+    "calldata": "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"
+  }
+}

scripts/proposals/NovaFeeSweep/generate.ts

@@ -0,0 +1,66 @@
+// generates a proposal payload to sweep the Nova L1 Timelock alias ETH balance to the fee router contract.
+
+import { BigNumber, ethers } from 'ethers'
+import {
+  IInbox__factory,
+  L1ArbitrumTimelock__factory,
+} from '../../../typechain-types'
+import { JsonRpcProvider } from '@ethersproject/providers'
+import fs from 'fs'
+import { keccak256, toUtf8Bytes } from 'ethers/lib/utils'
+;(async () => {
+  const l1TimelockAlias = '0xf7951d92b0c345144506576ec13ecf5103ac905a'
+  const novaInbox = '0xc4448b71118c9071Bcb9734A0EAc55D18A153949'
+  const novaToParentRouter = '0x36D0170D92F66e8949eB276C3AC4FEA64f83704d'
+  const maxL1GasPrice = ethers.utils.parseUnits('1000', 'gwei') // used to calculate maxSubmissionCost
+  const aliasBalance = await new JsonRpcProvider(
+    'https://nova.arbitrum.io/rpc'
+  ).getBalance(l1TimelockAlias)
+
+  const timelockIface = L1ArbitrumTimelock__factory.createInterface()
+  const inboxIface = IInbox__factory.createInterface()
+
+  const maxSubmissionCost = calcSubmissionCost(maxL1GasPrice)
+
+  const unsafeCreateRetryableCalldata = inboxIface.encodeFunctionData(
+    'unsafeCreateRetryableTicket',
+    [
+      novaToParentRouter, // to
+      aliasBalance.sub(maxSubmissionCost), // l2CallValue
+      maxSubmissionCost, // maxSubmissionCost
+      novaToParentRouter, // excessFeeRefundAddress
+      novaToParentRouter, // callValueRefundAddress
+      0, // gasLimit
+      0, // maxFeePerGas
+      '0x', // calldata
+    ]
+  )
+  const scheduleCalldata = timelockIface.encodeFunctionData('schedule', [
+    novaInbox,
+    0,
+    unsafeCreateRetryableCalldata,
+    '0x0000000000000000000000000000000000000000000000000000000000000000',
+    keccak256(toUtf8Bytes('Nova Fee Sweep')),
+    259200,
+  ])
+
+  const output = {
+    arbSysSendTxToL1Args: {
+      l1Timelock: '0xE6841D92B0C345144506576eC13ECf5103aC7f49',
+      calldata: scheduleCalldata,
+    },
+  }
+
+  console.log(output)
+
+  fs.writeFileSync(
+    './scripts/proposals/NovaFeeSweep/data.json',
+    JSON.stringify(output, null, 2)
+  )
+})()
+
+function calcSubmissionCost(baseFee: BigNumber) {
+  // data length is zero
+  // from the contract: return (1400 + 6 * dataLength) * (baseFee == 0 ? block.basefee : baseFee);
+  return baseFee.mul(1400)
+}