56 lines
1.2 KiB
Python
56 lines
1.2 KiB
Python
# third-party imports
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from hexathon import (
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add_0x,
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strip_0x,
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)
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from crypto_dev_signer.eth.transaction import EIP155Transaction
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# local imports
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from chainlib.eth.rpc import jsonrpc_template
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from chainlib.eth.tx import TxFactory
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from chainlib.eth.hash import keccak256_hex_to_hex
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def price():
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o = jsonrpc_template()
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o['method'] = 'eth_gasPrice'
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return o
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def balance(address):
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o = jsonrpc_template()
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o['method'] = 'eth_getBalance'
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o['params'].append(address)
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return o
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class GasTxFactory(TxFactory):
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def create(self, sender, recipient, value):
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tx = self.template(sender, recipient)
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tx['value'] = value
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txe = EIP155Transaction(tx, tx['nonce'], tx['chainId'])
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self.signer.signTransaction(txe)
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tx_raw = txe.rlp_serialize()
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tx_raw_hex = add_0x(tx_raw.hex())
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tx_hash_hex = add_0x(keccak256_hex_to_hex(tx_raw_hex))
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o = jsonrpc_template()
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o['method'] = 'eth_sendRawTransaction'
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o['params'].append(tx_raw_hex)
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return (tx_hash_hex, o)
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class DefaultGasOracle:
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def __init__(self, conn):
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self.conn = conn
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def get(self):
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o = price()
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r = self.conn.do(o)
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n = strip_0x(r)
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return int(n, 16)
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