Add dripRateProposer script for OETH

contracts/package.json

@@ -60,8 +60,8 @@
     "@aws-sdk/client-kms": "^3.598.0",
     "@aws-sdk/client-s3": "^3.600.0",
     "@nomicfoundation/hardhat-network-helpers": "^1.0.9",
-    "@nomiclabs/hardhat-ethers": "^2.0.2",
     "@nomicfoundation/hardhat-verify": "^2.0.12",
+    "@nomiclabs/hardhat-ethers": "^2.0.2",
     "@nomiclabs/hardhat-solhint": "^2.0.0",
     "@nomiclabs/hardhat-waffle": "^2.0.6",
     "@openzeppelin/contracts": "4.4.2",
@@ -115,6 +115,9 @@
   },
   "dependencies": {
     "@chainlink/contracts-ccip": "^1.2.1",
+    "@safe-global/api-kit": "^2.5.7",
+    "@safe-global/protocol-kit": "^5.2.0",
+    "@safe-global/types-kit": "^1.0.1",
     "ganache": "^7.9.2"
   }
-}
+}

contracts/scripts/defender-actions/oeth/dripRateProposer.js

@@ -0,0 +1,107 @@
+const { ethers } = require("ethers");
+const {
+  DefenderRelaySigner,
+  DefenderRelayProvider,
+} = require("@openzeppelin/defender-relay-client/lib/ethers");
+const addresses = require("../../../utils/addresses");
+
+const { SafeApiKit } = require("@safe-global/api-kit");
+const { Safe } = require("@safe-global/protocol-kit");
+const { OperationType } = require("@safe-global/types-kit");
+
+const log = require("../../../utils/logger")("action:oeth:dripRateProposer");
+
+const OETHAbi = [
+  "function totalSupply() external view returns (uint256)",
+  "function nonRebasingSupply() external view returns (uint256)",
+];
+const OETHFixedRateDripperAbi = ["function setDripRate(uint192) external"];
+
+const TARGET_APR = 0.034;
+const PERF_FEE = 0.2;
+
+const computeDripRate = async (provider) => {
+  const oeth = new ethers.Contract(
+    addresses.mainnet.OETHProxy,
+    OETHAbi,
+    provider
+  );
+  const totalSupply = await oeth.totalSupply();
+  const nonRebasingSupply = await oeth.nonRebasingSupply();
+  const rebasingSupply = totalSupply.sub(nonRebasingSupply);
+
+  log(`Total supply: ${totalSupply}`);
+  log(`Non rebasing supply: ${nonRebasingSupply}`);
+  log(`Rebasing supply: ${rebasingSupply}`);
+
+  const dailyYield = rebasingSupply
+    .mul(TARGET_APR)
+    .mul((1 / (1 - PERF_FEE)).toFixed(2))
+    .div(365);
+  const ratePerSecond = dailyYield.div(86400);
+  return ratePerSecond;
+};
+
+const proposeDripRate = async (provider, signer, ratePerSecond) => {
+  const apiKit = new SafeApiKit({
+    chainId: "1",
+  });
+
+  const safe = await Safe.init({
+    provider: provider,
+    signer: signer,
+    safeAddress: addresses.multichainStrategist,
+  });
+
+  const dripper = new ethers.Contract(
+    addresses.mainnet.OETHFixedRateDripper,
+    OETHFixedRateDripperAbi,
+    signer
+  );
+  const encodedTx = dripper.interface.encodeFunctionData(
+    "setDripRate(uint192)",
+    [ratePerSecond]
+  );
+
+  const txData = {
+    to: addresses.mainnet.OETHFixedRateDripper,
+    value: "0",
+    data: encodedTx,
+    operation: OperationType.Call,
+  };
+
+  const safeTx = await safe.createTransaction({
+    transactions: [txData],
+  });
+
+  const safeTxHash = await safe.getTransactionHash(safeTx);
+  const signature = await safe.signHash(safeTxHash);
+
+  await apiKit.proposeTransaction({
+    safeAddress: addresses.multichainStrategist,
+    safeTransactionData: safeTx.data,
+    safeTxHash,
+    senderAddress: signer.address,
+    senderSignature: signature.data,
+  });
+
+  log(`Transaction proposed: ${safeTxHash}`);
+};
+
+const handler = async (event) => {
+  const provider = new DefenderRelayProvider(event);
+  const signer = new DefenderRelaySigner(event, provider, { speed: "fastest" });
+
+  // Make sure network is mainnet
+  const network = await provider.getNetwork();
+  if (network.chainId !== 1) {
+    throw new Error("Network is not mainnet");
+  }
+
+  const targetRate = await computeDripRate(provider);
+  log(`Target rate: ${targetRate}`);
+
+  await proposeDripRate(provider, signer, targetRate);
+};
+
+module.exports = { handler };

contracts/scripts/defender-actions/rollup.config.cjs

@@ -68,4 +68,13 @@ module.exports = [
       format: "cjs",
     },
   },
+  {
+    ...commonConfig,
+    input: "oeth/dripRateProposer.js",
+    output: {
+      file: "dist/oeth/dripRateProposer/index.js",
+      inlineDynamicImports: true,
+      format: "cjs",
+    },
+  },
 ];

contracts/utils/addresses.js

@@ -8,6 +8,8 @@ addresses.createX = "0xba5Ed099633D3B313e4D5F7bdc1305d3c28ba5Ed";
 addresses.multichainStrategist = "0x4FF1b9D9ba8558F5EAfCec096318eA0d8b541971";
 addresses.votemarket = "0x5e5C922a5Eeab508486eB906ebE7bDFFB05D81e5";
 
+addresses.multichainStrategist = "0x4FF1b9D9ba8558F5EAfCec096318eA0d8b541971";
+
 addresses.mainnet = {};
 addresses.holesky = {};
 
@@ -227,7 +229,8 @@ addresses.mainnet.rETH = "0xae78736Cd615f374D3085123A210448E74Fc6393";
 addresses.mainnet.stETH = "0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84";
 addresses.mainnet.wstETH = "0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0";
 addresses.mainnet.FraxETHMinter = "0xbAFA44EFE7901E04E39Dad13167D089C559c1138";
-
+addresses.mainnet.OETHFixedRateDripper =
+  "0xe3B3b4Fc77505EcfAACf6dD21619a8Cc12fcc501";
 // 1Inch
 addresses.mainnet.oneInchRouterV5 =
   "0x1111111254EEB25477B68fb85Ed929f73A960582";