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ethers-quorum

v1.0.10

Published

Complete Ethereum library and wallet implementation in JavaScript, with support for Quorum

Downloads

676

Readme

Ethers Quorum

npm (tag)

Complete Ethereum library and wallet implementation in JavaScript, with support for Quorum

Features:

  • Interact with Quorum blockchain
  • Interact with external signer outside geth
  • Interact with internal signer within geth
  • Add new getQuorumPayload wrapper in PrivateProvider
  • Specify privateFor, privacyFlag (Optional) and mandatoryFor (Optional) for private transactions
  • Don't pass in privateFor for public transactions
  • Don't pass in signer URL into getPrivateSigner to fallback to unlocked geth keys

| Type | Private Txn | Public Txn | | ------------------ | ----------- | ---------- | | External Signer | ☑ | ☑ | | Geth Unlocked Keys | ☑ | ☑ |

Installing

node.js

/home/user/some_project> npm install --save ethers-quorum

Examples

Deploy private contract:

import { PrivateJsonRpcProvider, PrivateWallet, PrivateContractFactory } from 'ethers-quorum';
import { getAbiBytecode } from './loader.js';
import * as dotenv from 'dotenv';

async function main() {
  dotenv.config();
  const obj = await getAbiBytecode(
    'contracts/SimpleStorage_sol_Storage.abi',
    'contracts/SimpleStorage_sol_Storage.bin',
  );
  const provider = new PrivateJsonRpcProvider(process.env.url, parseInt(process.env.network), process.env.tesseraUrl);
  const signer = new PrivateWallet(process.env.pk, provider);
  // const signer = provider.getPrivateSigner('0xf0E2Db6C8dC6c681bB5D6aD121A107f300e9B2b5', 'http://localhost:8630'); // alternative way to use external signer or unlocked geth keys
  // signer.setDefaultSendRaw(false); // set to false use unlocked geth keys instead of external signer
  const contract = new PrivateContractFactory(obj.abi, obj.bytecode, signer);
  const contractInstance = await contract.deploy({
    privateFor: ['BULeR8JyUWhiuuCMU/HLA0Q5pzkYT+cHII3ZKBey3Bo='],
  });
  console.log('Contract', contractInstance);
  console.log('Contract address ::', contractInstance.address);
  console.log('Deployed transaction ::', contractInstance.deployTransaction);

  console.log('Deployed SHA3-512 hash of encrypted payload from PTM', contractInstance.deployTransaction.data);
  const unencryptedPayload = await provider.getQuorumPayload(contractInstance.deployTransaction.data);
  console.log('Unencrypted transaction payload in hex format', unencryptedPayload)
}

main();

Interact with private contract via encoded data:

const iface = new ethers.utils.Interface(abi);
const data = iface.encodeFunctionData('store', [25]);
const resp = await signer.sendTransaction({
  to: contract.address,
  gasLimit: 100_000,
  data,
  privateFor: ['BULeR8JyUWhiuuCMU/HLA0Q5pzkYT+cHII3ZKBey3Bo='],
});
console.log('Submitted txn :: ', resp);
resp.wait(); // wait for txn to populate
console.log(await contract.retrieve());

Interact with private contract via contract method:

const resp2 = await contract.store(35, {
  gasLimit: 100_000,
  privateFor: ['BULeR8JyUWhiuuCMU/HLA0Q5pzkYT+cHII3ZKBey3Bo='],
});
console.log('Submitted txn :: ', resp2);
resp2.wait(); // wait for txn to populate
console.log(await contract.retrieve());

License

MIT License (including all dependencies).