mirror of
git://holbrook.no/eth-contract-registry
synced 2024-11-16 06:26:47 +01:00
137 lines
3.7 KiB
Python
137 lines
3.7 KiB
Python
# standard imports
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import os
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import logging
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import json
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import hashlib
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# third-party 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.chain import ChainSpec
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from chainlib.eth.constant import (
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ZERO_ADDRESS,
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)
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from chainlib.jsonrpc import (
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jsonrpc_template,
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)
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from hexathon import (
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even,
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add_0x,
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)
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from chainlib.eth.tx import TxFactory
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# local imports
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from .encoding import (
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to_identifier,
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from_identifier_hex,
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)
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from .interface import Registry
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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 ContractRegistry(Registry):
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default_chain_spec = None
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__chains_registry = {}
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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 ContractRegistry.__abi == None:
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f = open(os.path.join(datadir, 'Registry.json'), 'r')
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ContractRegistry.__abi = json.load(f)
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f.close()
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return ContractRegistry.__abi
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@staticmethod
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def bytecode():
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if ContractRegistry.__bytecode == None:
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f = open(os.path.join(datadir, 'Registry.bin'))
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ContractRegistry.__bytecode = f.read()
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f.close()
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return ContractRegistry.__bytecode
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@staticmethod
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def gas(code=None):
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return 1500000
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def constructor(self, sender_address, identifier_strings=[]):
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# TODO: handle arrays in chainlib encode instead
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enc = ABIContractEncoder()
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enc.uint256(32)
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enc.uint256(len(identifier_strings))
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for s in identifier_strings:
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enc.bytes32(to_identifier(s))
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data = enc.get_contents()
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tx = self.template(sender_address, None, use_nonce=True)
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tx = self.set_code(tx, ContractRegistry.bytecode() + data)
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logg.debug('bytecode {}\ndata {}\ntx {}'.format(ContractRegistry.bytecode(), data, tx))
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return self.build(tx)
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@staticmethod
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def address(address=None):
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if address != None:
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ContractRegistry.__address = address
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return Registry.__address
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@staticmethod
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def load_for(chain_spec):
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chain_str = str(chain_spec)
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raise NotImplementedError()
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def set(self, contract_address, sender_address, identifier_string, address, chain_spec, chain_config_hash):
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enc = ABIContractEncoder()
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enc.method('set')
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enc.typ(ABIContractType.BYTES32)
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enc.typ(ABIContractType.ADDRESS)
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enc.typ(ABIContractType.BYTES32)
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enc.typ(ABIContractType.BYTES32)
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identifier = to_identifier(identifier_string)
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enc.bytes32(identifier)
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enc.address(address)
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chain_str = str(chain_spec)
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h = hashlib.new('sha256')
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h.update(chain_str.encode('utf-8'))
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chain_description_hash_bytes = h.digest()
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enc.bytes32(chain_description_hash_bytes.hex())
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enc.bytes32(chain_config_hash)
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data = enc.encode()
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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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return self.build(tx)
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def identifier(self, contract_address, idx, sender_address=ZERO_ADDRESS):
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o = jsonrpc_template()
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o['method'] = 'eth_call'
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enc = ABIContractEncoder()
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enc.method('identifiers')
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enc.typ(ABIContractType.UINT256)
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enc.uint256(idx)
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data = add_0x(enc.encode())
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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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return o
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@classmethod
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def parse_identifier(self, v):
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return from_identifier_hex(v)
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