Custom Oracle कैसे बनाएँ

ls actions
example.ts
tsconfig.json
package.json

cd actions && npm install --save-dev axios ethers @types/node && cd ..

const CONTRACT_ADDRESS = '...'; // replace with contract address

export const coinPrice: ActionFn = async (context: Context, event: Event) => {
  let transactionEvent = event as TransactionEvent;

  const ifc = new ethers.utils.Interface(CoinOracleContract.abi);

  const { data, topics } = transactionEvent.logs[0];
  const priceRequest = ifc.decodeEventLog('RequestCoinPrice', data, topics);
  const price = await getPrice();

  const oc = await oracleContract(context, ifc);

  await oc.update(priceRequest.reqId, price, {
    gasLimit: 250000,
    gasPrice: ethers.utils.parseUnits('100', 'gwei'),
  });
  console.log(`Processed: ${priceRequest.reqId} with price in cents: ${price}`);
};

const getPrice = async (coin: string) => {
  const coinInfo = await axios.get(`https://api.coingecko.com/api/v3/coins/${coin}`);
  return coinInfo.data.market_data.current_price.usd * 100;
};

const oracleContract = async (context: Context, contractInterface: ethers.utils.Interface) => {
  const etherscanApiKey = await context.secrets.get('oracle.providerApiKey');

  const provider = ethers.getDefaultProvider(ethers.providers.getNetwork(3), {
    etherscan: etherscanApiKey,
  });

  const oracleWallet = new ethers.Wallet(
    await context.secrets.get('oracle.addressPrivateKey'),
    provider,
  );

  const contract = new ethers.Contract(CONTRACT_ADDRESS, contractInterface, oracleWallet);
  return contract;
};

"esModuleInterop": true,
"resolveJsonModule": true

account_id: ''
actions:
  YOUR_USERNAME/YOUR_PROJECT_SLUG:
    runtime: v1
    sources: actions
    specs:
      coinOracle:
        description: Swapit
        function: coinOracle:coinPrice
        trigger:
          type: transaction
          transaction:
            status:
              - mined
            filters:
              - network: 3
                eventEmitted:
                  contract:
                    address: CONTRACT_ADDRESS
                  name: RequestCoinPrice
project_slug: ''

tenderly actions deploy