chaind-eth/chaind/eth/token/base.py

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# standard imports
import logging
# external imports
from funga.eth.transaction import EIP155Transaction
from hexathon import strip_0x
logg = logging.getLogger(__name__)
class BaseTokenResolver:
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def __init__(self, chain_spec, sender, signer, gas_oracle, nonce_oracle, advance_nonce=False):
self.chain_spec = chain_spec
self.chain_id = chain_spec.chain_id()
self.signer = signer
self.sender = sender
self.gas_oracle = gas_oracle
self.nonce_oracle = nonce_oracle
self.factory = None
self.gas_limit_start = None
self.gas_price_start = None
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if advance_nonce:
self.nonce_getter = self.nonce_oracle.next_nonce
else:
self.nonce_getter = self.nonce_oracle.get_nonce
def reset(self):
gas_data = self.gas_oracle.get_gas()
self.gas_price_start = gas_data[0]
self.gas_limit_start = gas_data[1]
def get_values(self, gas_value, value, executable_address=None):
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nonce = self.nonce_getter()
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if executable_address == None:
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return (value, 0, nonce)
try:
value = int(value)
except ValueError:
value = int(strip_0x(value), 16)
try:
gas_value = int(gas_value)
except ValueError:
gas_value = int(strip_0x(gas_value), 16)
return (gas_value, value, nonce,)
def sign(self, tx):
tx_o = EIP155Transaction(tx, tx['nonce'], self.chain_id)
tx_bytes = self.signer.sign_transaction_to_wire(tx_o)
return tx_bytes