61 lines
1.6 KiB
TypeScript
61 lines
1.6 KiB
TypeScript
import 'dotenv/config.js';
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import Web3 from 'web3';
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import { GasPrices } from '../types/gasPrices'
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import redisClient from './redis';
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const rpcUrl = process.env.RPC_URL || 'ws://localhost:8545';
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// Create a new web3 instance
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const web3 = new Web3(new Web3.providers.WebsocketProvider(rpcUrl, {
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reconnect: {
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auto: true,
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delay: 5000,
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maxAttempts: 5,
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onTimeout: false
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}
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}));
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export const subToBlockHeaders = (setDiscordStatus: () => Promise<void>) => {
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web3.eth.subscribe('newBlockHeaders', (error, blockHeader) => {
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if (error) console.error(error);
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// Set status every 10 blocks
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const shouldSetStatus = blockHeader.number % 10 === 0;
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// Get the gas price for this block
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web3.eth.getGasPrice((error, gasPrice) => {
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if (error) console.error(error);
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console.log('Gas price in wei:', gasPrice);
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redisClient.set('gas-price', Math.round(Number(gasPrice)))
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});
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if (shouldSetStatus) setDiscordStatus()
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});
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}
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const gweiFromWei = (priceInWei: number): number =>
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Math.round(Number(web3.utils.fromWei(`${Math.round(priceInWei)}`, 'gwei')));
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const getGasPrice = async (): Promise<number> => {
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const gasPrice = await redisClient.get('gas-price');
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return Number(gasPrice);
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}
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const getGasPricesInGwei = async (): Promise<GasPrices> => {
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const gasPrice = await getGasPrice()
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const fastPrice = gasPrice * 1.1;
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const slowPrice = gasPrice * 0.9;
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const gasPrices = {
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fast: gweiFromWei(fastPrice),
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average: gweiFromWei(gasPrice),
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slow: gweiFromWei(slowPrice),
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};
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return gasPrices;
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};
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export { getGasPricesInGwei }; |