chore(pricefeeds) Add morpho Example (#48)

* chore(pricefeeds) Add morpho Example

* merged into one example

Author: aditya520

price_feeds/evm/chainlink_migration/.example.env

@@ -0,0 +1,8 @@
+PRIVATE_KEY=
+RPC_URL=
+# https://www.pyth.network/developers/price-feed-ids
+PYTH_ADDRESS=
+# https://docs.pyth.network/price-feeds/price-feed-ids
+PRICE_FEED_ID=
+# To verify the contract on the respective chain's explorer
+ETHERSCAN_API_KEY=

price_feeds/evm/chainlink_migration/README.md

@@ -4,6 +4,8 @@ This example demonstrates how to deploy a Chainlink-compatible application to Py
 The application `src/ChainlinkApp.sol` is designed to use Chainlink price feeds.
 The script `script/PythAggregatorV3Deployment.sol` deploys this application with the [`PythAggregatorV3`](https://github.com/pyth-network/pyth-crosschain/blob/main/target_chains/ethereum/sdk/solidity/PythAggregatorV3.sol) adapter contract, such that it uses Pyth price feeds.
 
+This aggregator can be used to deploy Pyth Oracles for [Morpho vaults](https://docs.morpho.org/morpho/tutorials/deploy-an-oracle/#2-fill-all-attributes).
+
 ## Installation
 
 This example uses [Foundry](https://book.getfoundry.sh/getting-started/installation), `npm` and `jq`.
@@ -30,7 +32,15 @@ export PYTH_ADDRESS=0x0708325268dF9F66270F1401206434524814508b
 Then, deploy the contracts by running:
 
 ```bash copy
-forge script script/PythAggregatorV3Deployment.s.sol --rpc-url $RPC_URL --broadcast
+forge script script/PythAggregatorV3Deployment.s.sol --rpc-url $RPC_URL --broadcast --verify
+```
+
+This command will deploy the `PythAggregatorV3` contract.
+
+To test the Chainlink App, you can run the following command:
+
+```bash copy
+forge script script/ChainlinkApp.s.sol --rpc-url $RPC_URL --broadcast --verify
 ```
 
 This command will print something like:

price_feeds/evm/chainlink_migration/script/ChainlinkApp.s.sol

@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: Apache 2
+pragma solidity ^0.8.0;
+
+import "forge-std/Script.sol";
+import {PythAggregatorV3} from "@pythnetwork/pyth-sdk-solidity/PythAggregatorV3.sol";
+import {ChainlinkApp} from "../src/ChainlinkApp.sol";
+
+contract PythAggregatorV3Deployment is Script {
+    function run() external {
+        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
+        vm.startBroadcast(deployerPrivateKey);
+
+        // Get the address for your ecosystem from:
+        // https://docs.pyth.network/price-feeds/contract-addresses/evm
+        address pythPriceFeedsContract = vm.envAddress("PYTH_ADDRESS");
+        // Get the price feed ids from:
+        // https://docs.pyth.network/price-feeds/price-feed-ids
+        bytes32 ethFeedId = 0xff61491a931112ddf1bd8147cd1b641375f79f5825126d665480874634fd0ace;
+        bytes32 solFeedId = 0xef0d8b6fda2ceba41da15d4095d1da392a0d2f8ed0c6c7bc0f4cfac8c280b56d;
+
+        // Deploy an instance of PythAggregatorV3 for every feed.
+        // You can deploy these contracts beforehand if you are integrating with
+        PythAggregatorV3 ethAggregator = new PythAggregatorV3(pythPriceFeedsContract, ethFeedId);
+        PythAggregatorV3 solAggregator = new PythAggregatorV3(pythPriceFeedsContract, solFeedId);
+
+        // Pass the address of the PythAggregatorV3 contract to your chainlink-compatible app.
+        ChainlinkApp app = new ChainlinkApp(address(ethAggregator), address(solAggregator));
+
+        vm.stopBroadcast();
+    }
+}

price_feeds/evm/chainlink_migration/script/PythAggregatorV3Deployment.s.sol

@@ -3,8 +3,7 @@ pragma solidity ^0.8.0;
 
 import "forge-std/Script.sol";
 import {PythAggregatorV3} from "@pythnetwork/pyth-sdk-solidity/PythAggregatorV3.sol";
-import {ChainlinkApp} from "../src/ChainlinkApp.sol";
-
+import "forge-std/console.sol";
 contract PythAggregatorV3Deployment is Script {
     function run() external {
         uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");
@@ -15,16 +14,13 @@ contract PythAggregatorV3Deployment is Script {
         address pythPriceFeedsContract = vm.envAddress("PYTH_ADDRESS");
         // Get the price feed ids from:
         // https://docs.pyth.network/price-feeds/price-feed-ids
-        bytes32 ethFeedId = 0xff61491a931112ddf1bd8147cd1b641375f79f5825126d665480874634fd0ace;
-        bytes32 solFeedId = 0xef0d8b6fda2ceba41da15d4095d1da392a0d2f8ed0c6c7bc0f4cfac8c280b56d;
+        bytes32 priceFeedId = vm.envBytes32("PRICE_FEED_ID");
 
         // Deploy an instance of PythAggregatorV3 for every feed.
         // You can deploy these contracts beforehand if you are integrating with
-        PythAggregatorV3 ethAggregator = new PythAggregatorV3(pythPriceFeedsContract, ethFeedId);
-        PythAggregatorV3 solAggregator = new PythAggregatorV3(pythPriceFeedsContract, solFeedId);
+        PythAggregatorV3 aggregator = new PythAggregatorV3(pythPriceFeedsContract, priceFeedId);
 
-        // Pass the address of the PythAggregatorV3 contract to your chainlink-compatible app.
-        ChainlinkApp app = new ChainlinkApp(address(ethAggregator), address(solAggregator));
+        console.log("PythAggregatorV3 deployed at", address(aggregator));
 
         vm.stopBroadcast();
     }