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Account Update

Import extend from web3py_ext to extend web3 to kaia web3

Import necessary utils from eth_account, web3py_ext and cytools

Create a Web3 instance with the specified kaia Baobab testnet URL

Also, you can change the provider URL from baobab to allthatnode.

Load transaction key from a private key to use it as transaction role key. You can use it to sign a transaction

Load update key from a private key to use it as update role key. You can use it to sign the account update transaction for this account. It means only a person who have this key can update this account. z

Load fee payer key from a private key to use it as fee payer role key. You can use it to sign a transaction as a fee payer.

Load fee fee_delegator key from a private key

Creating an empty transaction of type TxType.FEE_DELEGATED_ACCOUNT_UPDATE. You can use empty_tx util to get a tx with default fields filled.

Merge additional fields like sender and keys into the empty tx by using the merge util.

In this case, the account key to update is the role-based key and each role has pubkey type. Each role can have pubkey or multisig.

You can use the compressed_key util to set each role key. It will extract the compressed public key from the key

Use fill_transaction to add more params to transaction object like gas limit...

You can use the to_pretty util to print the formatted tx.

Sign the account update tx type. You should sign it with update role key as the account "0x5bd2...ccea" is already role-based account to update this account

Recovering the sender's address from the signed transaction

If you want to see the RLP-encoded signed tx, use the decode_transaction util

Sign the signed_tx.rawTransaction with fee delegator account

Recovering the fee delegator's address from the signed transaction

If you want to see the RLP-encoded signed tx, use the decode_transaction util

Sending the signed transaction to the network using fee delegator account and waiting receipt until it is completely executed in the blockchain

web3_fee_delegated_account_update_role_based.py

from web3py_ext import extend
from web3 import Web3
from eth_account import Account
from web3py_ext.klaytn_account.utils import compressed_key
from web3py_ext.klaytn_account.account_key import KeyType
from web3py_ext.transaction.transaction import (
empty_tx,
fill_transaction,
TxType
)
from web3py_ext.utils.klaytn_utils import (
to_pretty,
bytes_to_hex_str
)
from cytoolz import merge
from eth_utils.address import to_checksum_address
w3 = Web3(Web3.HTTPProvider('https://public-en-kairos.node.kaia.io'))
def web3_fee_delegated_account_update_role_based():
transaction_key = Account.from_key('0xc9668ccd35fc20587aa37a48838b48ccc13cf14dd74c8999dd6a480212d5f7ac')
update_key = Account.from_key('0x9ba8cb8f60044058a9e6f815c5c42d3a216f47044c61a1750b6d29ddc7f34bda')
fee_payer_key = Account.from_key('0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8')
fee_delegator = Account.from_key('0x0e4ca6d38096ad99324de0dde108587e5d7c600165ae4cd6c2462c597458c2b8')
account_update_tx = empty_tx(TxType.FEE_DELEGATED_ACCOUNT_UPDATE)
account_update_tx = merge(account_update_tx, {
'from' : to_checksum_address("0x5bd2fb3c21564c023a4a735935a2b7a238c4ccea"),
'key' : {
"type": KeyType.ROLE_BASED,
"keys": {
"roleTransactionKey": {
"type":KeyType.PUBLIC,
"key": compressed_key(transaction_key)
},
"roleAccountUpdateKey": {
"type": KeyType.PUBLIC,
"key": compressed_key(update_key)
},
"roleFeePayerKey": {
"type": KeyType.PUBLIC,
"key": compressed_key(fee_payer_key)
}
}
}
})
account_update_tx = fill_transaction(account_update_tx, w3)
print(to_pretty(account_update_tx))
# sign the kaia specific transaction type with web3py
signed_tx = Account.sign_transaction(account_update_tx, update_key.key)
print('\nrawTransaction:', bytes_to_hex_str(signed_tx.rawTransaction))
recovered_tx = Account.recover_transaction(signed_tx.rawTransaction)
print("\nrecovered sender address: ", recovered_tx)
decoded_tx = Account.decode_transaction(signed_tx.rawTransaction)
print("\ndecoded transaction:", to_pretty(decoded_tx))
feepayer_signed_tx = Account.sign_transaction_as_feepayer(signed_tx.rawTransaction, fee_delegator.address, fee_delegator.key)
print("\nraw transaction of feePayer signed tx:", feepayer_signed_tx.rawTransaction.hex())
feepayer_recovered_tx = Account.recover_transaction_as_feepayer(feepayer_signed_tx.rawTransaction)
print("recovered feepayer address:", feepayer_recovered_tx)
decoded_tx = Account.decode_transaction(feepayer_signed_tx.rawTransaction)
print("\ndecoded transaction:", to_pretty(decoded_tx))
tx_hash = w3.eth.send_raw_transaction(feepayer_signed_tx.rawTransaction)
tx_receipt = w3.eth.wait_for_transaction_receipt(tx_hash)
print('tx hash: ', tx_hash, 'receipt: ', tx_receipt)
web3_fee_delegated_account_update_role_based()

output

❯ py web3_fee_delegated_account_update_role_based.py
{
"from": "0x5bD2fb3c21564C023A4A735935a2B7A238C4cCEA",
"gas": 159000,
"gasPrice": 50000000000,
"nonce": 41,
"chainId": 1001,
"type": 33,
"key": {
"type": 5,
"keys": {
"roleTransactionKey": {
"type": 2,
"key": "0x03f26489914098c5da51f0f646e3000da4d6197217df082b4f7ce1530f0a0cbf2a"
},
"roleAccountUpdateKey": {
"type": 2,
"key": "0x0263021199702b9fefca617bdcb2a9ed4a810dfa8d270d4e804a1e778450e63ec3"
},
"roleFeePayerKey": {
"type": 2,
"key": "0x03dc9dccbd788c00fa98f7f4082f2f714e799bc0c29d63f04d48b54fe6250453cd"
}
}
}
}
rawTransaction: 21f8da29850ba43b740083026d18945bd2fb3c21564c023a4a735935a2b7a238c4cceab86f05f86ca302a103f26489914098c5da51f0f646e3000da4d6197217df082b4f7ce1530f0a0cbf2aa302a10263021199702b9fefca617bdcb2a9ed4a810dfa8d270d4e804a1e778450e63ec3a302a103dc9dccbd788c00fa98f7f4082f2f714e799bc0c29d63f04d48b54fe6250453cdf847f8458207f5a029674da4dd604844d0ba315984d03d5bed928d17e687a99d6daf8193e6c94e09a054aae388b9297d80186595a8c4e25a9a5317ab022965db737a1c10bf4dd6a974
recovered sender address: 0x5bD2fb3c21564C023A4A735935a2B7A238C4cCEA
decoded transaction: {
"type": 33,
"nonce": 41,
"gasPrice": 50000000000,
"gas": 159000,
"from": "0x5bD2fb3c21564C023A4A735935a2B7A238C4cCEA",
"signatures": [
{
"v": 2037,
"r": 18727347918799676494996859755384456453784169075037049001717055518319697284617,
"s": 38296213664480012201573534359692265422031797825224297482338061132889882798452
}
],
"key": {
"type": 5,
"keys": {
"roleTransactionKey": {
"type": 2,
"key": "0x03f26489914098c5da51f0f646e3000da4d6197217df082b4f7ce1530f0a0cbf2a"
},
"roleAccountUpdateKey": {
"type": 2,
"key": "0x0263021199702b9fefca617bdcb2a9ed4a810dfa8d270d4e804a1e778450e63ec3"
},
"roleFeePayerKey": {
"type": 2,
"key": "0x03dc9dccbd788c00fa98f7f4082f2f714e799bc0c29d63f04d48b54fe6250453cd"
}
}
},
"chainId": 1001
}
raw transaction of feePayer signed tx: 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
recovered feepayer address: ['0xA2a8854b1802D8Cd5De631E690817c253d6a9153']
decoded transaction: {
"type": 33,
"nonce": 41,
"gasPrice": 50000000000,
"gas": 159000,
"from": "0x5bD2fb3c21564C023A4A735935a2B7A238C4cCEA",
"feePayer": "0xA2a8854b1802D8Cd5De631E690817c253d6a9153",
"signatures": [
{
"v": 2037,
"r": 18727347918799676494996859755384456453784169075037049001717055518319697284617,
"s": 38296213664480012201573534359692265422031797825224297482338061132889882798452
}
],
"feePayerSignatures": [
{
"v": 2037,
"r": 66607034336854704869676726256115158277487333092054504647329956124483114823968,
"s": 6592579651635282554362947641586686897275388037603811376489932442025345336562
}
],
"key": {
"type": 5,
"keys": {
"roleTransactionKey": {
"type": 2,
"key": "0x03f26489914098c5da51f0f646e3000da4d6197217df082b4f7ce1530f0a0cbf2a"
},
"roleAccountUpdateKey": {
"type": 2,
"key": "0x0263021199702b9fefca617bdcb2a9ed4a810dfa8d270d4e804a1e778450e63ec3"
},
"roleFeePayerKey": {
"type": 2,
"key": "0x03dc9dccbd788c00fa98f7f4082f2f714e799bc0c29d63f04d48b54fe6250453cd"
}
}
},
"chainId": 1001
}
tx hash: 0x78dc150b70538beed168e5f673bd6a058287bb6177295e9117771ac3e9e31d69 receipt: AttributeDict({'blockHash': HexBytes('0x2b85cd7babae3f2d49405da8f4d5500ae3bc2462bccf1c46b3a1e3b0cb7fb7c5'), 'blockNumber': 148223525, 'contractAddress': None, 'cumulativeGasUsed': 483882, 'effectiveGasPrice': 25000000000, 'from': '0x5bD2fb3c21564C023A4A735935a2B7A238C4cCEA', 'gasUsed': 91000, 'logs': [], 'logsBloom': HexBytes('0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'), 'status': 1, 'to': '0x5bD2fb3c21564C023A4A735935a2B7A238C4cCEA', 'transactionHash': HexBytes('0x78dc150b70538beed168e5f673bd6a058287bb6177295e9117771ac3e9e31d69'), 'transactionIndex': 2, 'type': 0})