aave-protocol-v2/tasks/full/3_oracles.ts

import {task} from 'hardhat/config';
import {getParamPerNetwork} from '../../helpers/contracts-helpers';
import {deployAaveOracle, deployLendingRateOracle} from '../../helpers/contracts-deployments';
import {setInitialMarketRatesInRatesOracleByHelper} from '../../helpers/oracles-helpers';
import {ICommonConfiguration, eEthereumNetwork, SymbolMap} from '../../helpers/types';
import {waitForTx, notFalsyOrZeroAddress} from '../../helpers/misc-utils';
import {
  ConfigNames,
  loadPoolConfig,
  getWethAddress,
  getGenesisPoolAdmin,
  getLendingRateOracles,
} from '../../helpers/configuration';
import {
  getChainlinkPriceProvider,
  getLendingPoolAddressesProvider,
  getLendingRateOracle,
  getPairsTokenAggregator,
} from '../../helpers/contracts-getters';

task('full:deploy-oracles', 'Deploy oracles for dev enviroment')
  .addFlag('verify', 'Verify contracts at Etherscan')
  .addParam('pool', `Pool name to retrieve configuration, supported: ${Object.values(ConfigNames)}`)
  .setAction(async ({verify, pool}, DRE) => {
    try {
      await DRE.run('set-DRE');
      const network = <eEthereumNetwork>DRE.network.name;
      const poolConfig = loadPoolConfig(pool);
      const {
        ProtocolGlobalParams: {UsdAddress},
        ReserveAssets,
        FallbackOracle,
        ChainlinkAggregator,
      } = poolConfig as ICommonConfiguration;
      const lendingRateOracles = getLendingRateOracles(poolConfig);
      const addressesProvider = await getLendingPoolAddressesProvider();
      const admin = await getGenesisPoolAdmin(poolConfig);
      const proxyPriceProviderAddress = getParamPerNetwork(poolConfig.ProxyPriceProvider, network);
      const lendingRateOracleAddress = getParamPerNetwork(poolConfig.LendingRateOracle, network);
      const fallbackOracleAddress = await getParamPerNetwork(FallbackOracle, network);
      const reserveAssets = await getParamPerNetwork(ReserveAssets, network);
      const chainlinkAggregators = await getParamPerNetwork(ChainlinkAggregator, network);

      const tokensToWatch: SymbolMap<string> = {
        ...reserveAssets,
        USD: UsdAddress,
      };
      const [tokens, aggregators] = getPairsTokenAggregator(tokensToWatch, chainlinkAggregators);

      const chainlinkProviderPriceProvider = notFalsyOrZeroAddress(proxyPriceProviderAddress)
        ? await getChainlinkPriceProvider(proxyPriceProviderAddress)
        : await deployAaveOracle(
            [tokens, aggregators, fallbackOracleAddress, await getWethAddress(poolConfig)],
            verify
          );
      const lendingRateOracle = notFalsyOrZeroAddress(lendingRateOracleAddress)
        ? await getLendingRateOracle(lendingRateOracleAddress)
        : await deployLendingRateOracle(verify);
      const {USD, ...tokensAddressesWithoutUsd} = tokensToWatch;

      if (!lendingRateOracleAddress) {
        await setInitialMarketRatesInRatesOracleByHelper(
          lendingRateOracles,
          tokensAddressesWithoutUsd,
          lendingRateOracle,
          admin
        );
      }

      // Register the proxy price provider on the addressesProvider
      await waitForTx(
        await addressesProvider.setPriceOracle(chainlinkProviderPriceProvider.address)
      );
      await waitForTx(await addressesProvider.setLendingRateOracle(lendingRateOracle.address));
    } catch (error) {
      if (DRE.network.name.includes('tenderly')) {
        const transactionLink = `https://dashboard.tenderly.co/${DRE.config.tenderly.username}/${
          DRE.config.tenderly.project
        }/fork/${DRE.tenderlyRPC.getFork()}/simulation/${DRE.tenderlyRPC.getHead()}`;
        console.error('Check tx error:', transactionLink);
      }
      throw error;
    }
  });