mirror of git://holbrook.no/eth-token-index
148 lines
4.2 KiB
Python
148 lines
4.2 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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# external imports
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from chainlib.eth.contract import (
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ABIContractEncoder,
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ABIContractType,
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abi_decode_single,
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)
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from chainlib.eth.tx import (
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TxFactory,
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TxFormat,
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)
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from chainlib.jsonrpc import JSONRPCRequest
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from chainlib.eth.constant import ZERO_ADDRESS
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from hexathon import (
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add_0x,
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)
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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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def to_identifier(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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class TokenUniqueSymbolIndex(TxFactory):
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__abi = None
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__bytecode = None
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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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@staticmethod
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def gas(code=None):
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return 1200000
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def constructor(self, sender_address):
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code = TokenUniqueSymbolIndex.bytecode()
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tx = self.template(sender_address, None, use_nonce=True)
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tx = self.set_code(tx, code)
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return self.build(tx)
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def register(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
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enc = ABIContractEncoder()
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enc.method('register')
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enc.typ(ABIContractType.ADDRESS)
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enc.address(address)
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data = enc.get()
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tx = self.template(sender_address, contract_address, use_nonce=True)
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tx = self.set_code(tx, data)
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tx = self.finalize(tx, tx_format)
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return tx
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def address_of(self, contract_address, token_symbol, sender_address=ZERO_ADDRESS, id_generator=None):
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j = JSONRPCRequest(id_generator)
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o = j.template()
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o['method'] = 'eth_call'
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enc = ABIContractEncoder()
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enc.method('addressOf')
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enc.typ(ABIContractType.BYTES32)
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token_symbol_digest = to_identifier(token_symbol)
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enc.bytes32(token_symbol_digest)
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data = add_0x(enc.get())
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tx = self.template(sender_address, contract_address)
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tx = self.set_code(tx, data)
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o['params'].append(self.normalize(tx))
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o = j.finalize(o)
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return o
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def entry(self, contract_address, idx, sender_address=ZERO_ADDRESS, id_generator=None):
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j = JSONRPCRequest(id_generator)
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o = j.template()
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o['method'] = 'eth_call'
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enc = ABIContractEncoder()
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enc.method('entry')
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enc.typ(ABIContractType.UINT256)
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enc.uint256(idx)
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data = add_0x(enc.get())
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tx = self.template(sender_address, contract_address)
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tx = self.set_code(tx, data)
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o['params'].append(self.normalize(tx))
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o = j.finalize(o)
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return o
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def entry_count(self, contract_address, sender_address=ZERO_ADDRESS, id_generator=None):
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j = JSONRPCRequest(id_generator)
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o = j.template()
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o['method'] = 'eth_call'
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enc = ABIContractEncoder()
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enc.method('entryCount')
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data = add_0x(enc.get())
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tx = self.template(sender_address, contract_address)
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tx = self.set_code(tx, data)
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o['params'].append(self.normalize(tx))
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o = j.finalize(o)
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return o
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@classmethod
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def parse_address_of(self, v):
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return abi_decode_single(ABIContractType.ADDRESS, v)
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@classmethod
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def parse_entry(self, v):
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return abi_decode_single(ABIContractType.ADDRESS, v)
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@classmethod
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def parse_entry_count(self, v):
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return abi_decode_single(ABIContractType.UINT256, v)
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