import { ethers } from 'ethers';
import contract_ABI from './abi/contract_ABI.json';
const provider = new ethers.JsonRpcProvider("http://mainnet.dasomoli.org:8545");
const contract_address = "0x1234567890123456789012345678901234567890";
const contract = new ethers.Contract(contract_address, contract_ABI, provider);
const balanceOf = contract.balanceOf(account_address, { blockTag: 12345678 });위처럼 호출 시 blockTag: 와 함께 blockNumber를 주면 된다.
ethers.js v5 기준
const contract = await ethers.getContractAt("DasomOLIContract", contract_address);
// DasomEvent(type arg1, ...)
const filter = contract.filters.DasomEvent();
const currentBlock = await ethers.provider.getBlockNumber();
const fromBlock = currentBlock - 86400;
const events = await ethers.provider.getLogs({
...filter,
fromBlock: fromBlock,
toBlock: currentBlock,
});
if (events.length > 0) {
events.forEach((event: Log) => {
console.log(`Dasom event found in block ${event.blockNumber}:`);
console.log(`Transaction Hash: ${event.transactionHash}`);
console.log(`Transaction data: ${event.data}`);
const parsedLog = contract.interface.parseLog(event);
const args = parsedLog.args;
const arg1 = args.arg1;
console.log(`Log Data:`, parsedLog.args);
console.log('--------------------------');
});
}
const cf = await ethers.getContractFactory('DasomContract');
const dasomContract = await cf.deploy();
if (!(await dasomContract.deployed())) {
throw new Error(
'Error occurred during deploying the contract',
);
}const ca = await ethers.getContractFactory("DasomToken");
const cabi = ca.interface;
cabi.format() // Fragments 확인
cabi.forEachFunction((func, index) => { console.log(func.format()); }); // 각 함수의 시그니처 확인
cabi.forEachFunction((func, index) => { console.log(func.format(), ethers.keccak256(ethers.toUtf8Bytes(func.format()))); }); // 시그니처와 해시 값 확인.
const DasomOLI = ethers.getContractFactory('DasomOLI');
const dasomoli = DasomOLI.attach('0x1234567890123456789012345678901234567890');
dasomoli.functionDasom();