04_deploy_create.py

import os
from pathlib import Path

from eth_account import Account
from eth_account.signers.local import LocalAccount
from eth_typing import HexAddress, HexStr
from web3 import Web3

from zksync2.core.types import EthBlockParams
from zksync2.manage_contracts.contract_encoder_base import ContractEncoder
from zksync2.module.module_builder import ZkSyncBuilder
from zksync2.signer.eth_signer import PrivateKeyEthSigner
from zksync2.transaction.transaction_builders import TxCreateContract


def deploy_contract(
    zk_web3: Web3, account: LocalAccount, compiled_contract: Path
) -> HexAddress:
    """Deploy compiled contract on zkSync network using create() opcode

    :param zk_web3:
        Instance of ZkSyncBuilder that interacts with zkSync network

    :param account:
        From which account the deployment contract tx will be made

    :param compiled_contract:
        Compiled contract source.

    :return:
        Address of deployed contract.
    """
    # Get chain id of zkSync network
    chain_id = zk_web3.zksync.chain_id

    # Signer is used to generate signature of provided transaction
    signer = PrivateKeyEthSigner(account, chain_id)

    # Get nonce of ETH address on zkSync network
    nonce = zk_web3.zksync.get_transaction_count(
        account.address, EthBlockParams.PENDING.value
    )

    # Get contract ABI and bytecode information
    storage_contract = ContractEncoder.from_json(zk_web3, compiled_contract)[0]

    # Get current gas price in Wei
    gas_price = zk_web3.zksync.gas_price

    # Create deployment contract transaction
    create_contract = TxCreateContract(
        web3=zk_web3,
        chain_id=chain_id,
        nonce=nonce,
        from_=account.address,
        gas_limit=0,  # UNKNOWN AT THIS STATE
        gas_price=gas_price,
        bytecode=storage_contract.bytecode,
    )

    # ZkSync transaction gas estimation
    estimate_gas = zk_web3.zksync.eth_estimate_gas(create_contract.tx)
    print(f"Fee for transaction is: {Web3.from_wei(estimate_gas * gas_price, 'ether')} ETH")

    # Convert transaction to EIP-712 format
    tx_712 = create_contract.tx712(estimate_gas)

    # Sign message
    signed_message = signer.sign_typed_data(tx_712.to_eip712_struct())

    # Encode signed message
    msg = tx_712.encode(signed_message)

    # Deploy contract
    tx_hash = zk_web3.zksync.send_raw_transaction(msg)

    # Wait for deployment contract transaction to be included in a block
    tx_receipt = zk_web3.zksync.wait_for_transaction_receipt(
        tx_hash, timeout=240, poll_latency=0.5
    )

    print(f"Tx status: {tx_receipt['status']}")
    contract_address = tx_receipt["contractAddress"]

    print(f"Deployed contract address: {contract_address}")

    # Return the contract deployed address
    return contract_address


if __name__ == "__main__":
    # Set a provider
    PROVIDER = "https://sepolia.era.zksync.dev"

    # Get the private key from OS environment variables
    PRIVATE_KEY = bytes.fromhex(os.environ.get("PRIVATE_KEY"))

    # Connect to zkSync network
    zk_web3 = ZkSyncBuilder.build(PROVIDER)

    # Get account object by providing from private key
    account: LocalAccount = Account.from_key(PRIVATE_KEY)

    # Provide a compiled JSON source contract
    contract_path = Path("../solidity/storage/build/combined.json")

    # Perform contract deployment
    deploy_contract(zk_web3, account, contract_path)