80 lines
2.3 KiB
TypeScript
80 lines
2.3 KiB
TypeScript
import { useEffect, useState } from "react";
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import { ethers } from "ethers";
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import { ConnectionStatus } from "./types";
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export const DEFAULT_ERIGON_URL = "http://127.0.0.1:8545";
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export const useProvider = (
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erigonURL?: string
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): [ConnectionStatus, ethers.providers.JsonRpcProvider | undefined] => {
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const [connStatus, setConnStatus] = useState<ConnectionStatus>(
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ConnectionStatus.CONNECTING
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);
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if (erigonURL !== undefined) {
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if (erigonURL === "") {
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console.info(`Using default erigon URL: ${DEFAULT_ERIGON_URL}`);
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erigonURL = DEFAULT_ERIGON_URL;
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} else {
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console.log(`Using configured erigon URL: ${erigonURL}`);
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}
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}
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const [provider, setProvider] = useState<
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ethers.providers.JsonRpcProvider | undefined
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>();
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useEffect(() => {
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if (erigonURL === undefined) {
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setConnStatus(ConnectionStatus.NOT_ETH_NODE);
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setProvider(undefined);
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return;
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}
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setConnStatus(ConnectionStatus.CONNECTING);
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const tryToConnect = async () => {
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const provider = new ethers.providers.JsonRpcProvider(
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erigonURL,
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"mainnet"
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);
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// Check if it is at least a regular ETH node
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let blockNumber: number = 0;
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try {
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blockNumber = await provider.getBlockNumber();
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} catch (err) {
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console.log(err);
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setConnStatus(ConnectionStatus.NOT_ETH_NODE);
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setProvider(undefined);
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return;
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}
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// Check if it is an Erigon node by probing a lightweight method
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try {
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await provider.send("erigon_getHeaderByNumber", [blockNumber]);
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} catch (err) {
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console.log(err);
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setConnStatus(ConnectionStatus.NOT_ERIGON);
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setProvider(undefined);
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return;
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}
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// Check if it has Otterscan patches by probing a lightweight method
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try {
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// TODO: replace by a custom made method that works in all networks
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await provider.send("ots_getTransactionTransfers", [
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"0x793e079fbc427cba0857b4e878194ab508f33983f45415e50af3c3c0e662fdf3",
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]);
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setConnStatus(ConnectionStatus.CONNECTED);
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setProvider(provider);
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} catch (err) {
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console.log(err);
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setConnStatus(ConnectionStatus.NOT_OTTERSCAN_PATCHED);
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setProvider(undefined);
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}
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};
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tryToConnect();
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}, [erigonURL]);
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return [connStatus, provider];
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};
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