eth-accounts-index/python/eth_accounts_index/registry.py

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import logging
import json
import os
logging.basicConfig(level=logging.DEBUG)
logg = logging.getLogger()
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moddir = os.path.dirname(__file__)
datadir = os.path.join(moddir, 'data')
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class AccountRegistry:
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__abi = None
__bytecode = None
def __init__(self, w3, address, signer_address=None):
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abi = AccountRegistry.abi()
AccountRegistry.bytecode()
self.contract = w3.eth.contract(abi=abi, address=address)
self.w3 = w3
if signer_address != None:
self.signer_address = signer_address
else:
if type(self.w3.eth.defaultAccount).__name__ == 'Empty':
self.w3.eth.defaultAccount = self.w3.eth.accounts[0]
self.signer_address = self.w3.eth.defaultAccount
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@staticmethod
def abi():
if AccountRegistry.__abi == None:
f = open(os.path.join(datadir, 'AccountsIndex.abi.json'), 'r')
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AccountRegistry.__abi = json.load(f)
f.close()
return AccountRegistry.__abi
@staticmethod
def bytecode():
if AccountRegistry.__bytecode == None:
f = open(os.path.join(datadir, 'AccountsIndex.bin'))
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AccountRegistry.__bytecode = f.read()
f.close()
return AccountRegistry.__bytecode
def add(self, address):
gasPrice = self.w3.eth.gasPrice;
nonce = self.w3.eth.getTransactionCount(self.signer_address, 'pending')
tx = self.contract.functions.add(address).buildTransaction({
'gasPrice': gasPrice,
'gas': 100000,
'from': self.signer_address,
'nonce': nonce,
})
logg.debug('tx {}'.format(tx))
tx_hash = self.contract.functions.add(address).transact({
'gasPrice': gasPrice,
'gas': 100000,
'from': self.signer_address,
'nonce': nonce,
})
return tx_hash
def count(self):
return self.contract.functions.count().call()
def have(self, address):
r = self.contract.functions.accountsIndex(address).call()
return r != 0
def last(self, n):
c = self.count()
lo = c - n - 1
if lo < 0:
lo = 0
accounts = []
for i in range(c - 1, lo, -1):
a = self.contract.functions.accounts(i).call()
accounts.append(a)
return accounts