mirror of
git://holbrook.no/eth-address-index
synced 2024-11-19 15:46:46 +01:00
85 lines
2.4 KiB
Python
85 lines
2.4 KiB
Python
# Author: Louis Holbrook <dev@holbrook.no> 0826EDA1702D1E87C6E2875121D2E7BB88C2A746
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# SPDX-License-Identifier: GPL-3.0-or-later
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# File-version: 1
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# Description: Python interface to abi and bin files for faucet contracts
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# standard imports
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import logging
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import json
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import os
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import hashlib
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logg = logging.getLogger(__name__)
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moddir = os.path.dirname(__file__)
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datadir = os.path.join(moddir, 'data')
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class TokenUniqueSymbolIndex:
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__abi = None
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__bytecode = None
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__address = None
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__erc20_abi = None
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def __init__(self, w3, address, signer_address=None):
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abi = TokenUniqueSymbolIndex.abi()
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TokenUniqueSymbolIndex.bytecode()
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self.__address = address
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self.contract = w3.eth.contract(abi=abi, address=address)
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self.w3 = w3
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if signer_address != None:
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self.signer_address = signer_address
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else:
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if type(self.w3.eth.defaultAccount).__name__ == 'Empty':
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self.w3.eth.defaultAccount = self.w3.eth.accounts[0]
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self.signer_address = self.w3.eth.defaultAccount
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f = open(os.path.join(datadir, 'ERC20.json'), 'r')
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TokenUniqueSymbolIndex.__erc20_abi = json.load(f)
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f.close()
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@staticmethod
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def abi():
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if TokenUniqueSymbolIndex.__abi == None:
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f = open(os.path.join(datadir, 'TokenUniqueSymbolIndex.json'), 'r')
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TokenUniqueSymbolIndex.__abi = json.load(f)
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f.close()
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return TokenUniqueSymbolIndex.__abi
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@staticmethod
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def bytecode():
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if TokenUniqueSymbolIndex.__bytecode == None:
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f = open(os.path.join(datadir, 'TokenUniqueSymbolIndex.bin'))
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TokenUniqueSymbolIndex.__bytecode = f.read()
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f.close()
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return TokenUniqueSymbolIndex.__bytecode
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def add(self, address):
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c = self.w3.eth.contract(abi=TokenUniqueSymbolIndex.__erc20_abi, address=address)
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s = c.functions.symbol().call()
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h = to_ref(s)
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return self.contract.functions.register(h, address).transact({'from':self.signer_address})
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def count(self):
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return self.contract.functions.registryCount().call()
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def get_index(self, idx):
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return self.contract.functions.entry(idx).call()
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def get_token_by_symbol(self, symbol):
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ref = to_ref(symbol)
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return self.contract.functions.addressOf(symbol).call()
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def to_ref(s):
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h = hashlib.new('sha256')
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h.update(s.encode('utf-8'))
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return h.digest().hex()
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