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Add 'data' param to EIP-1559 to allow contract calls #9

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Add 'data' param to EIP-1559 to allow contract calls #9

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06801e0
add calldata param
Aug 15, 2023
6c6f7bf
Update lambda_function.py
albydarned Mar 20, 2025
2f31e5c
Update lambda_helper.py
albydarned Mar 20, 2025
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7 changes: 6 additions & 1 deletion aws_kms_lambda_ethereum/_lambda/functions/eth_client_eip1559/lambda_function.py
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Original file line number Diff line number Diff line change
Expand Up @@ -58,10 +58,13 @@ def lambda_handler(event, context):
amount = event.get('amount')

nonce = event.get('nonce')
# get the call data
data = event.get('data')

# optional params
chainid = event.get('chainid')
type = event.get('type')
gas_limit = event.get('gas_limit')
max_fee_per_gas = event.get('max_fee_per_gas')
max_priority_fee_per_gas = event.get('max_priority_fee_per_gas')

Expand All @@ -77,8 +80,10 @@ def lambda_handler(event, context):
nonce=nonce,
chainid=chainid,
type=type,
gas_limit=gas_limit,
max_fee_per_gas=max_fee_per_gas,
max_priority_fee_per_gas=max_priority_fee_per_gas)
max_priority_fee_per_gas=max_priority_fee_per_gas,
data=data)

# assemble Ethereum transaction and sign it offline
raw_tx_signed_hash, raw_tx_signed_payload = assemble_tx(tx_params=tx_params,
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6 changes: 3 additions & 3 deletions aws_kms_lambda_ethereum/_lambda/functions/eth_client_eip1559/lambda_helper.py
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Expand Up @@ -151,13 +151,13 @@ def get_recovery_id(msg_hash: bytes, r: int, s: int, eth_checksum_addr: str, cha


def get_tx_params(dst_address: str, amount: int, nonce: int,
chainid: int, type: int, max_fee_per_gas: int, max_priority_fee_per_gas: int) -> dict:
chainid: int, type: int, gas_limit: int, max_fee_per_gas: int, max_priority_fee_per_gas: int, data: str) -> dict:
transaction = {
'nonce': nonce,
'to': dst_address,
'value': w3.toWei(amount, 'ether'),
'data': '0x00',
'gas': 160000,
'data': data,
'gas': gas_limit,
'maxFeePerGas': max_fee_per_gas,
'maxPriorityFeePerGas': max_priority_fee_per_gas,
'type': type,
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