On-chain add weETH collateral into Mainnet WETH market (#869)

deployments/mainnet/weth/migrations/1718968177_add_weeth_collateral.ts

@@ -0,0 +1,179 @@
+import { expect } from 'chai';
+import { DeploymentManager } from '../../../../plugins/deployment_manager/DeploymentManager';
+import { migration } from '../../../../plugins/deployment_manager/Migration';
+import { exp, proposal } from '../../../../src/deploy';
+
+const WEETH_ADDRESS = '0xCd5fE23C85820F7B72D0926FC9b05b43E359b7ee';
+const WEETH_PRICE_FEED_ADDRESS = '0x5c9C449BbC9a6075A2c061dF312a35fd1E05fF22';
+
+export default migration('1718968177_add_weeth_collateral', {
+  async prepare(deploymentManager: DeploymentManager) {
+    const _weETHScalingPriceFeed = await deploymentManager.deploy(
+      'weETH:priceFeed',
+      'pricefeeds/ScalingPriceFeed.sol',
+      [
+        WEETH_PRICE_FEED_ADDRESS, // weETH / ETH price feed
+        8                         // decimals
+      ]
+    );
+    return { weETHScalingPriceFeed: _weETHScalingPriceFeed.address };
+  },
+
+  async enact(deploymentManager: DeploymentManager, _, { weETHScalingPriceFeed }) {
+
+    const trace = deploymentManager.tracer();
+
+    const weETH = await deploymentManager.existing(
+      'weETH',
+      WEETH_ADDRESS,
+      'mainnet',
+      'contracts/ERC20.sol:ERC20'
+    );
+    const weEthPricefeed = await deploymentManager.existing(
+      'weETH:priceFeed',
+      weETHScalingPriceFeed,
+      'mainnet'
+    );
+
+    const {
+      governor,
+      comet,
+      cometAdmin,
+      configurator,
+    } = await deploymentManager.getContracts();
+
+    // https://www.comp.xyz/t/add-weeth-market-on-ethereum/5179/3
+    const weETHAssetConfig = {
+      asset: weETH.address,
+      priceFeed: weEthPricefeed.address,
+      decimals: await weETH.decimals(),
+      borrowCollateralFactor: exp(0.82, 18),
+      liquidateCollateralFactor: exp(0.87, 18),
+      liquidationFactor: exp(0.92, 18),
+      supplyCap: exp(22_500, 18),
+    };
+
+    const mainnetActions = [
+      // 1. Add weETH as asset
+      {
+        contract: configurator,
+        signature: 'addAsset(address,(address,address,uint8,uint64,uint64,uint64,uint128))',
+        args: [comet.address, weETHAssetConfig],
+      },
+      // 2. Set new Annual Supply Interest Rate Slope High to 100%
+      {
+        contract: configurator,
+        signature: 'setSupplyPerYearInterestRateSlopeHigh(address,uint64)',
+        args: [
+          comet.address,
+          exp(1, 18)  // newSupplyPerYearInterestRateSlopeHigh
+        ],
+      },
+      // 3. Set new Annual Borrow Interest Rate Slope High to 115%
+      {
+        contract: configurator,
+        signature: 'setBorrowPerYearInterestRateSlopeHigh(address,uint64)',
+        args: [
+          comet.address,
+          exp(1.15, 18)  // newBorrowPerYearInterestRateSlopeHigh
+        ],
+      },
+      // 4. Deploy and upgrade to a new version of Comet
+      {
+        contract: cometAdmin,
+        signature: 'deployAndUpgradeTo(address,address)',
+        args: [configurator.address, comet.address],
+      },
+    ];
+
+    const description = '# Add weETH as collateral into cWETHv3 on Mainnet\n\n## Proposal summary\n\nCompound Growth Program [AlphaGrowth] proposes to add weETH into cWETHv3 on Ethereum network. This proposal takes the governance steps recommended and necessary to update a Compound III WETH market on Ethereum. Simulations have confirmed the market’s readiness, as much as possible, using the [Comet scenario suite](https://github.com/compound-finance/comet/tree/main/scenario). The new parameters include setting the risk parameters based on the [recommendations from Gauntlet weETH](https://www.comp.xyz/t/add-weeth-market-on-ethereum/5179/3).\n\nFurther detailed information can be found on the corresponding [proposal pull request](PR - https://github.com/compound-finance/comet/pull/869) and [forum discussion weETH](https://www.comp.xyz/t/add-weeth-market-on-ethereum/5179).\n\n\n## Proposal Actions\n\nThe first proposal action adds weETH asset as collateral with corresponding configurations.\n\nThe second action sets new Annual Supply Interest Rate Slope High to 100%.\n\nThe third action sets new Annual Borrow Interest Rate Slope High to 115%.\n\nThe fourth action deploys and upgrades Comet to a new version.';
+    const txn = await deploymentManager.retry(async () =>
+      trace(
+        await governor.propose(...(await proposal(mainnetActions, description)))
+      )
+    );
+
+    const event = txn.events.find(
+      (event) => event.event === 'ProposalCreated'
+    );
+    const [proposalId] = event.args;
+    trace(`Created proposal ${proposalId}.`);
+  },
+
+  async enacted(deploymentManager: DeploymentManager): Promise<boolean> {
+    return true;
+  },
+
+  async verify(deploymentManager: DeploymentManager) {
+    const { comet, configurator } = await deploymentManager.getContracts();
+
+    const weETHAssetIndex = Number(await comet.numAssets()) - 1;
+
+    const weETH = await deploymentManager.existing(
+      'weETH',
+      WEETH_ADDRESS,
+      'mainnet',
+      'contracts/ERC20.sol:ERC20'
+    );
+
+    const weETHAssetConfig = {
+      asset: weETH.address,
+      priceFeed: '',
+      decimals: await weETH.decimals(),
+      borrowCollateralFactor: exp(0.82, 18),
+      liquidateCollateralFactor: exp(0.87, 18),
+      liquidationFactor: exp(0.92, 18),
+      supplyCap: exp(22_500, 18)
+    };
+
+    // 1. Compare weETH asset config with Comet and Configurator asset config    
+    const cometWeETHAssetInfo = await comet.getAssetInfoByAddress(
+      WEETH_ADDRESS
+    );
+    expect(weETHAssetIndex).to.be.equal(cometWeETHAssetInfo.offset);
+    expect(weETHAssetConfig.asset).to.be.equal(cometWeETHAssetInfo.asset);
+    expect(exp(1, weETHAssetConfig.decimals)).to.be.equal(
+      cometWeETHAssetInfo.scale
+    );
+    expect(weETHAssetConfig.borrowCollateralFactor).to.be.equal(
+      cometWeETHAssetInfo.borrowCollateralFactor
+    );
+    expect(weETHAssetConfig.liquidateCollateralFactor).to.be.equal(
+      cometWeETHAssetInfo.liquidateCollateralFactor
+    );
+    expect(weETHAssetConfig.liquidationFactor).to.be.equal(
+      cometWeETHAssetInfo.liquidationFactor
+    );
+    expect(weETHAssetConfig.supplyCap).to.be.equal(
+      cometWeETHAssetInfo.supplyCap
+    );
+
+    const configuratorWeETHAssetConfig = (
+      await configurator.getConfiguration(comet.address)
+    ).assetConfigs[weETHAssetIndex];
+    expect(weETHAssetConfig.asset).to.be.equal(
+      configuratorWeETHAssetConfig.asset
+    );
+    expect(weETHAssetConfig.decimals).to.be.equal(
+      configuratorWeETHAssetConfig.decimals
+    );
+    expect(weETHAssetConfig.borrowCollateralFactor).to.be.equal(
+      configuratorWeETHAssetConfig.borrowCollateralFactor
+    );
+    expect(weETHAssetConfig.liquidateCollateralFactor).to.be.equal(
+      configuratorWeETHAssetConfig.liquidateCollateralFactor
+    );
+    expect(weETHAssetConfig.liquidationFactor).to.be.equal(
+      configuratorWeETHAssetConfig.liquidationFactor
+    );
+    expect(weETHAssetConfig.supplyCap).to.be.equal(
+      configuratorWeETHAssetConfig.supplyCap
+    );
+
+    // 2. Check new Annual Supply Interest Rate Slope High
+    expect(exp(1, 18) / BigInt(31_536_000)).to.be.equal(await comet.supplyPerSecondInterestRateSlopeHigh());
+
+    // 3. Check new Annual Borrow Interest Rate Slope High
+    expect(exp(1.15, 18) / BigInt(31_536_000)).to.be.equal(await comet.borrowPerSecondInterestRateSlopeHigh());
+  },
+});

deployments/mainnet/weth/relations.ts

@@ -14,12 +14,20 @@ export default {
   'AppProxyUpgradeable': {
     artifact: 'contracts/ERC20.sol:ERC20',
   },
-  TransparentUpgradeableProxy: {
+  UUPSProxy: {
     artifact: 'contracts/ERC20.sol:ERC20',
     delegates: {
       field: {
         slot: '0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc'
       }
     }
   },
+  TransparentUpgradeableProxy: {
+    artifact: 'contracts/ERC20.sol:ERC20',
+    delegates: {
+      field: {
+        slot: '0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc'
+      }
+    }
+  }
 };