Update base price feed for cWstETHv3 on Mainnet (#933)

Co-authored-by: dmitriy-woof-software <[email protected]>
Co-authored-by: GitHub Actions Bot <>

deployments/mainnet/wsteth/migrations/1727727546_change_base_price_feed.ts

@@ -0,0 +1,73 @@
+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 WSTETH_ADDRESS = '0x7f39C581F595B53c5cb19bD0b3f8dA6c935E2Ca0';
+const constantPriceFeedAddress = '0x72e9B6F907365d76C6192aD49C0C5ba356b7Fa48';
+
+export default migration('1727727546_change_base_price_feed', {
+  async prepare() {
+    return {};
+  },
+
+  enact: async (deploymentManager: DeploymentManager) => {
+    const trace = deploymentManager.tracer();
+    const {
+      governor,
+      comet,
+      cometAdmin,
+      configurator
+    } = await deploymentManager.getContracts();
+
+
+    const mainnetActions = [
+      // 1. Add weETH as asset
+      {
+        contract: configurator,
+        signature: 'setBaseTokenPriceFeed(address,address)',
+        args: [comet.address, constantPriceFeedAddress],
+      },
+      // 2. Deploy and upgrade to a new version of Comet
+      {
+        contract: cometAdmin,
+        signature: 'deployAndUpgradeTo(address,address)',
+        args: [configurator.address, comet.address],
+      },
+    ];
+
+    const description = '# Update price feed in cWstETHv3 on Ethereum\n\n## Proposal summary\n\nCompound Growth Program [AlphaGrowth] proposes to update wstETH price feed in cWstETHv3 market on Ethereum to constant price feed as it is intended to be.\n\n\n## Proposal Actions\n\nThe first proposal action updates price feed for wstETH.\n\nThe second 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(): Promise<boolean> {
+    return true;
+  },
+
+  async verify(deploymentManager: DeploymentManager) {
+    const { comet, configurator } = await deploymentManager.getContracts();
+
+    // 1. Compare proposed asset config with Comet asset info
+    const basePriceFeed = await comet.baseTokenPriceFeed();
+
+    expect(basePriceFeed).to.eq(constantPriceFeedAddress);
+    expect(await comet.getPrice(basePriceFeed)).to.eq(exp(1, 8));
+
+    // 2. Compare proposed asset config with Configurator asset config
+    const basePriceFeedFromConfigurator = (
+      await configurator.getConfiguration(comet.address)
+    ).baseTokenPriceFeed;
+
+    expect(basePriceFeedFromConfigurator).to.eq(constantPriceFeedAddress);
+  },
+});