eth-writer

An interface for non-owner writer role to smart contract instance
Info | Log | Files | Refs

interface.py (1753B)

      1 # external imports
      2 from chainlib.eth.tx import TxFormat
      3 from chainlib.eth.tx import TxFactory
      4 from chainlib.jsonrpc import JSONRPCRequest
      5 from chainlib.eth.constant import ZERO_ADDRESS
      6 from chainlib.eth.contract import ABIContractEncoder
      7 from chainlib.eth.contract import ABIContractType
      8 from hexathon import add_0x
      9 
     10 class EthWriter(TxFactory):
     11 
     12     def __single_address_method(self, method, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
     13         enc = ABIContractEncoder()
     14         enc.method(method)
     15         enc.typ(ABIContractType.ADDRESS)
     16         enc.address(address)
     17         data = enc.get()
     18         tx = self.template(sender_address, contract_address, use_nonce=True)
     19         tx = self.set_code(tx, data)
     20         tx = self.finalize(tx, tx_format)
     21         return tx
     22 
     23 
     24     def add_writer(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
     25         return self.__single_address_method('addWriter', contract_address, sender_address, address, tx_format)
     26 
     27 
     28     def delete_writer(self, contract_address, sender_address, address, tx_format=TxFormat.JSONRPC):
     29         return self.__single_address_method('deleteWriter', contract_address, sender_address, address, tx_format)
     30 
     31 
     32     def is_writer(self, contract_address, address, sender_address=ZERO_ADDRESS, id_generator=None):
     33         j = JSONRPCRequest(id_generator)
     34         o = j.template()
     35         o['method'] = 'eth_call'
     36         enc = ABIContractEncoder()
     37         enc.method('isWriter')
     38         enc.typ(ABIContractType.ADDRESS)
     39         enc.address(address)
     40         data = add_0x(enc.get())
     41         tx = self.template(sender_address, contract_address)
     42         tx = self.set_code(tx, data)
     43         o['params'].append(self.normalize(tx))
     44         return o