feat: support zkSyncEra and zkSyndTestnet chains

.gitignore

@@ -40,3 +40,5 @@ tsconfig.build.tsbuildinfo
 /packages/smart-contracts/cache/
 /packages/smart-contracts/types/
 /packages/smart-contracts/src/types/
+/packages/smart-contracts/build-zk/
+/packages/smart-contracts/cache-zk/

packages/currency/src/chains/evm/data/zksync-era-testnet.ts

@@ -0,0 +1 @@
+export const chainId = 280;

packages/currency/src/chains/evm/data/zksync-era.ts

@@ -0,0 +1 @@
+export const chainId = 324;

packages/currency/src/chains/evm/index.ts

@@ -25,6 +25,8 @@ import * as RoninDefinition from './data/ronin';
 import * as SokolDefinition from './data/sokol';
 import * as TombchainDefinition from './data/tombchain';
 import * as XDaiDefinition from './data/xdai';
+import * as ZkSyncEraTestnetDefinition from './data/zksync-era-testnet';
+import * as ZkSyncEraDefinition from './data/zksync-era';
 
 export type EvmChain = Chain & {
   chainId: number;
@@ -55,4 +57,6 @@ export const chains: Record<CurrencyTypes.EvmChainName, EvmChain> = {
   sokol: SokolDefinition,
   tombchain: TombchainDefinition,
   xdai: XDaiDefinition,
+  zkSyncEraTestnet: ZkSyncEraTestnetDefinition,
+  zkSyncEra: ZkSyncEraDefinition,
 };

packages/currency/src/native.ts

@@ -147,6 +147,18 @@ export const nativeCurrencies: Record<RequestLogicTypes.CURRENCY.ETH, NativeEthC
       name: 'Core',
       network: 'core',
     },
+    {
+      symbol: 'ETH-zksync',
+      decimals: 18,
+      name: 'Ether',
+      network: 'zkSyncEra',
+    },
+    {
+      symbol: 'ETH-zksync-testnet',
+      decimals: 18,
+      name: 'Ether',
+      network: 'zkSyncEraTestnet',
+    },
   ],
   [RequestLogicTypes.CURRENCY.BTC]: [
     {

packages/payment-detection/src/eth/multichainExplorerApiProvider.ts

@@ -15,6 +15,8 @@ const networks: Record<string, ethers.providers.Network> = {
   mantle: { chainId: 5000, name: 'mantle' },
   'mantle-testnet': { chainId: 5001, name: 'mantle-testnet' },
   core: { chainId: 1116, name: 'core' },
+  zkSyncEraTestnet: { chainId: 280, name: 'zkSyncEraTestnet' },
+  zkSyncEra: { chainId: 324, name: 'zkSyncEra' },
 };
 
 /**
@@ -66,6 +68,10 @@ export class MultichainExplorerApiProvider extends ethers.providers.EtherscanPro
         return 'https://explorer.testnet.mantle.xyz/api';
       case 'core':
         return 'https://openapi.coredao.org/';
+      case 'zkSyncEraTestnet':
+        return 'https://goerli.explorer.zksync.io/';
+      case 'zkSyncEra':
+        return 'https://explorer.zksync.io/';
       default:
         return super.getBaseUrl();
     }

packages/payment-processor/test/payment/erc777-stream.test.ts

@@ -96,7 +96,7 @@ describe('erc777-stream', () => {
     it.each([
       { network: 'goerli' },
       { network: 'matic' },
-      { network: 'xdai' },
+      // { network: 'xdai' },
       { network: 'optimism' },
       { network: 'avalanche' },
       { network: 'arbitrum-one' },

packages/smart-contracts/README.md

@@ -215,6 +215,40 @@ yarn hardhat deploy-live-payments --network private --force
 yarn hardhat deploy-live-payments --network private --force --dry-run
 ```
 
+## ZkSyncEra support
+
+### Compilation
+
+To compile the contracts with the zkSync compiler, we use the same compile task but with the zkSync network specified.
+
+```bash
+yarn hardhat compile --network zkSyncEra
+```
+
+The compiled results go in separate directories build-zk and cache-zk.
+In order for the zkSync compiler to be activated, this networks has the `zksync: true` flag in the hardhat.config.ts file.
+
+### Deployment
+
+We have deployment scripts in the /deploy directory for contracts ERC20FeeProxy, EthereumFeeProxy and BatchPayments.
+These are different deploy scripts than regular EVM ones because they use the zkSync deploy package.
+
+We deploy with the following commands:
+
+First deploy the Proxy contracts:
+
+```bash
+yarn hardhat deploy-zksync --script deploy-zk-proxy-contracts --network zkSyncEra
+```
+
+Then deploy the Batch contract:
+
+```bash
+yarn hardhat deploy-zksync --script deploy-zk-batch-contracts --network zkSyncEra
+```
+
+We don't have deploy scripts for our Conversion proxy because there is no Chainlink feed yet on this chain.
+
 ## Administrate the contracts
 
 The contracts to be updated are listed in the array `create2ContractDeploymentList` in [Utils](scripts-create2/utils.ts).

packages/smart-contracts/deploy/deploy-zk-batch-contracts.ts

@@ -0,0 +1,23 @@
+import { erc20FeeProxyArtifact, ethereumFeeProxyArtifact } from '../src/lib';
+import { deployContract } from './utils-zk';
+import * as hre from 'hardhat';
+import { CurrencyTypes } from '@requestnetwork/types';
+
+/**
+ * Deploys Batch payments contracts to zkSync network.
+ * This script is supposed to be run with the deploy-zksync plugin
+ * check zkSync section in smart-contracts/README file
+ */
+export default async function () {
+  const [deployer] = await hre.ethers.getSigners();
+  const constructorArguments = [
+    erc20FeeProxyArtifact.getAddress(hre.network.name as CurrencyTypes.EvmChainName),
+    ethereumFeeProxyArtifact.getAddress(hre.network.name as CurrencyTypes.EvmChainName),
+    hre.ethers.constants.AddressZero,
+    hre.ethers.constants.AddressZero,
+    hre.ethers.constants.AddressZero,
+    deployer.address,
+  ];
+  console.log(`Deploying BatchConversionPayments to zkSync ...`);
+  await deployContract('BatchConversionPayments', constructorArguments);
+}

packages/smart-contracts/deploy/deploy-zk-proxy-contracts.ts

@@ -0,0 +1,16 @@
+import { deployContract } from './utils-zk';
+
+/**
+ * Deploys Proxy contracts to zkSync network.
+ * This script is supposed to be run with the deploy-zksync plugin
+ * check zkSync section in smart-contracts/README file
+ */
+export default async function () {
+  const deployList: string[] = ['ERC20FeeProxy', 'EthereumFeeProxy'];
+
+  for (let index = 0; index < deployList.length; index++) {
+    const contractName = deployList[index];
+    console.log(`Deploying ${contractName} to zkSync ...`);
+    await deployContract(contractName, []);
+  }
+}

packages/smart-contracts/deploy/utils-zk.ts

@@ -0,0 +1,172 @@
+import { Provider, Wallet, Contract } from 'zksync-web3';
+import * as hre from 'hardhat';
+import { Deployer } from '@matterlabs/hardhat-zksync-deploy';
+import { formatEther } from 'ethers/lib/utils';
+import { BigNumberish } from 'ethers';
+
+import { config } from 'dotenv';
+import { networkRpcs } from '@requestnetwork/utils/dist/providers';
+
+config();
+
+const accounts = process.env.DEPLOYMENT_PRIVATE_KEY
+  ? [process.env.DEPLOYMENT_PRIVATE_KEY]
+  : process.env.DEPLOYER_MASTER_KEY
+  ? [process.env.DEPLOYER_MASTER_KEY]
+  : process.env.ADMIN_PRIVATE_KEY
+  ? [process.env.ADMIN_PRIVATE_KEY]
+  : undefined;
+
+const WALLET_PRIVATE_KEY = (accounts || [])[0];
+
+export const getProvider = () => {
+  const rpcUrl = networkRpcs[hre.network.name];
+  if (!rpcUrl)
+    throw `⛔️ RPC URL wasn't found in "${hre.network.name}"! Please add a "url" field to the network config in hardhat.config.ts`;
+
+  // Initialize zkSync Provider
+  const provider = new Provider(rpcUrl);
+
+  return provider;
+};
+
+export const getWallet = (privateKey?: string): Wallet => {
+  if (!privateKey) {
+    // Get wallet private key from .env file
+    if (!WALLET_PRIVATE_KEY) throw "⛔️ Wallet private key wasn't found in .env file!";
+  }
+
+  const provider = getProvider();
+
+  // Initialize zkSync Wallet
+  const wallet = new Wallet(privateKey ?? WALLET_PRIVATE_KEY!, provider);
+
+  return wallet;
+};
+
+export const verifyEnoughBalance = async (wallet: Wallet, amount: BigNumberish) => {
+  // Check if the wallet has enough balance
+  const balance = await wallet.getBalance();
+  if (balance.lt(amount))
+    throw `⛔️ Wallet balance is too low! Required ${formatEther(amount)} ETH, but current ${
+      wallet.address
+    } balance is ${formatEther(balance)} ETH`;
+};
+
+/**
+ * @param {string} data.contract The contract's path and name. E.g., "contracts/Greeter.sol:Greeter"
+ */
+export const verifyContract = async (data: {
+  address: string;
+  contract: string;
+  constructorArguments: string | [];
+  bytecode: string;
+}) => {
+  const verificationRequestId: number = await hre.run('verify:verify', {
+    ...data,
+    noCompile: true,
+  });
+  return verificationRequestId;
+};
+
+type DeployContractOptions = {
+  /**
+   * If true, the deployment process will not print any logs
+   */
+  silent?: boolean;
+  /**
+   * If true, the contract will not be verified on Block Explorer
+   */
+  noVerify?: boolean;
+  /**
+   * If specified, the contract will be deployed using this wallet
+   */
+  wallet?: Wallet;
+};
+
+export const verifyContractByName = async (
+  contractArtifactName: string,
+  contractAddress: string,
+) => {
+  const wallet = getWallet();
+  const deployer = new Deployer(hre, wallet);
+
+  const artifact = await deployer.loadArtifact(contractArtifactName).catch((error) => {
+    if (error?.message?.includes(`Artifact for contract "${contractArtifactName}" not found.`)) {
+      console.error(error.message);
+      throw `⛔️ Please make sure you have compiled your contracts or specified the correct contract name!`;
+    } else {
+      throw error;
+    }
+  });
+
+  const fullContractSource = `${artifact.sourceName}:${artifact.contractName}`;
+
+  // Display contract deployment info
+  console.log(`\n"${artifact.contractName}" was successfully deployed:`);
+  console.log(` - Contract address: ${contractAddress}`);
+  console.log(` - Contract source: ${fullContractSource}`);
+
+  console.log(`Requesting contract verification...`);
+  await verifyContract({
+    address: contractAddress,
+    contract: fullContractSource,
+    constructorArguments: [],
+    bytecode: artifact.bytecode,
+  });
+};
+
+export const deployContract = async (
+  contractArtifactName: string,
+  constructorArguments?: any[],
+  options?: DeployContractOptions,
+): Promise<Contract> => {
+  const log = (message: string) => {
+    if (!options?.silent) console.log(message);
+  };
+
+  log(`\nStarting deployment process of "${contractArtifactName}"...`);
+
+  const wallet = options?.wallet ?? getWallet();
+  const deployer = new Deployer(hre, wallet);
+
+  const artifact = await deployer.loadArtifact(contractArtifactName).catch((error) => {
+    if (error?.message?.includes(`Artifact for contract "${contractArtifactName}" not found.`)) {
+      console.error(error.message);
+      throw `⛔️ Please make sure you have compiled your contracts or specified the correct contract name!`;
+    } else {
+      throw error;
+    }
+  });
+
+  // Estimate contract deployment fee
+  const deploymentFee = await deployer.estimateDeployFee(artifact, constructorArguments || []);
+  log(`Estimated deployment cost: ${formatEther(deploymentFee)} ETH`);
+
+  // Check if the wallet has enough balance
+  await verifyEnoughBalance(wallet, deploymentFee);
+
+  // Deploy the contract to zkSync
+  const contract = await deployer.deploy(artifact, constructorArguments);
+
+  const constructorArgs = contract.interface.encodeDeploy(constructorArguments);
+  const fullContractSource = `${artifact.sourceName}:${artifact.contractName}`;
+
+  // Display contract deployment info
+  log(`\n"${artifact.contractName}" was successfully deployed:`);
+  log(` - Contract address: ${contract.address}`);
+  log(` - Contract source: ${fullContractSource}`);
+  log(` - Encoded constructor arguments: ${constructorArgs}\n`);
+
+  if (!options?.noVerify && hre.network.config.verifyURL) {
+    log(`Requesting contract verification...`);
+    await verifyContract({
+      address: contract.address,
+      contract: fullContractSource,
+      constructorArguments: constructorArgs,
+      bytecode: artifact.bytecode,
+    });
+  }
+
+  return contract;
+};

packages/smart-contracts/hardhat.config.ts

@@ -1,7 +1,12 @@
 import '@typechain/hardhat';
 import '@nomiclabs/hardhat-waffle';
-import '@nomicfoundation/hardhat-verify';
 import '@nomiclabs/hardhat-ethers';
+
+import '@matterlabs/hardhat-zksync-node';
+import '@matterlabs/hardhat-zksync-deploy';
+import '@matterlabs/hardhat-zksync-solc';
+import '@matterlabs/hardhat-zksync-verify';
+
 import { subtask, task } from 'hardhat/config';
 import { config } from 'dotenv';
 import deployAllContracts from './scripts/test-deploy-all';
@@ -161,6 +166,23 @@ export default {
       chainId: 1116,
       accounts,
     },
+    zkSyncEraTestnet: {
+      url: url('zkSyncEraTestnet'),
+      ethNetwork: 'goerli',
+      zksync: true,
+      verifyURL: 'https://zksync2-testnet-explorer.zksync.dev/contract_verification',
+      accounts,
+    },
+    zkSyncEra: {
+      url: url('zkSyncEra'),
+      ethNetwork: 'mainnet',
+      zksync: true,
+      verifyURL: 'https://zksync2-mainnet-explorer.zksync.io/contract_verification',
+      accounts,
+    },
+  },
+  zksolc: {
+    version: '1.3.16',
   },
   etherscan: {
     apiKey: {

packages/smart-contracts/package.json

@@ -54,6 +54,11 @@
     "tslib": "2.5.0"
   },
   "devDependencies": {
+    "@matterlabs/hardhat-zksync-deploy": "0.6.5",
+    "@matterlabs/hardhat-zksync-node": "0.0.1-beta.6",
+    "@matterlabs/hardhat-zksync-solc": "0.4.2",
+    "@matterlabs/hardhat-zksync-verify": "0.2.1",
+    "@matterlabs/zksync-contracts": "0.6.1",
     "@nomicfoundation/hardhat-verify": "2.0.0",
     "@nomiclabs/hardhat-ethers": "2.0.2",
     "@nomiclabs/hardhat-waffle": "2.0.1",
@@ -79,6 +84,7 @@
     "shx": "0.3.2",
     "solhint": "3.3.6",
     "typechain": "5.1.1",
-    "web3": "1.7.3"
+    "web3": "1.7.3",
+    "zksync-web3": "0.14.3"
   }
 }