141 lines
4.3 KiB
Python
141 lines
4.3 KiB
Python
# standard imports
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import os
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import logging
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# external imports
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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.hash import keccak256_string_to_hex
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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.constant import ZERO_ADDRESS
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from chainlib.jsonrpc import jsonrpc_template
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from eth_erc20 import ERC20
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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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# local imports
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from erc20_demurrage_token.data import data_dir
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logg = logging.getLogger(__name__)
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class DemurrageTokenSettings:
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def __init__(self):
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self.name = None
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self.symbol = None
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self.decimals = None
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self.demurrage_level = None
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self.period_minutes = None
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self.sink_address = None
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class DemurrageToken(ERC20):
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__abi = None
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__bytecode = None
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def constructor(self, sender_address, settings, redistribute=True, cap=0, tx_format=TxFormat.JSONRPC):
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if not redistribute or cap:
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raise NotImplementedError('token cap and sink only redistribution not yet implemented')
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code = DemurrageToken.bytecode()
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enc = ABIContractEncoder()
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enc.string(settings.name)
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enc.string(settings.symbol)
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enc.uint256(settings.decimals)
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enc.uint256(settings.demurrage_level)
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enc.uint256(settings.period_minutes)
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enc.address(settings.sink_address)
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code += enc.get()
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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.finalize(tx, tx_format)
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@staticmethod
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def gas(code=None):
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return 3500000
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@staticmethod
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def abi():
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if DemurrageToken.__abi == None:
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f = open(os.path.join(data_dir, 'DemurrageTokenMultiNocap.json'), 'r')
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DemurrageToken.__abi = json.load(f)
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f.close()
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return DemurrageToken.__abi
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@staticmethod
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def bytecode():
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if DemurrageToken.__bytecode == None:
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f = open(os.path.join(data_dir, 'DemurrageTokenMultiNocap.bin'), 'r')
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DemurrageToken.__bytecode = f.read()
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f.close()
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return DemurrageToken.__bytecode
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def add_minter(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
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enc = ABIContractEncoder()
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enc.method('addMinter')
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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 remove_minter(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
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enc = ABIContractEncoder()
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enc.method('removeMinter')
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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 mint_to(self, contract_address, sender_address, address, value, tx_format=TxFormat.JSONRPC):
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enc = ABIContractEncoder()
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enc.method('mintTo')
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enc.typ(ABIContractType.ADDRESS)
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enc.typ(ABIContractType.UINT256)
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enc.address(address)
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enc.uint256(value)
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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 apply_demurrage(self, contract_address, sender_address):
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return self.transact_noarg('applyDemurrage', contract_address, sender_address)
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def actual_period(self, contract_address, sender_address=ZERO_ADDRESS):
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return self.call_noarg('actualPeriod', contract_address, sender_address=sender_address)
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def demurrage_amount(self, contract_address, sender_address=ZERO_ADDRESS):
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return self.call_noarg('demurrageAmount', contract_address, sender_address=sender_address)
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def parse_actual_period(self, v):
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return abi_decode_single(ABIContractType.UINT256, v)
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def parse_demurrage_amount(self, v):
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return abi_decode_single(ABIContractType.UINT256, v)
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