cic-cli/cic/ext/eth/__init__.py

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# standard imports
import logging
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import copy
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import json
# external imports
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from chainlib.chain import ChainSpec
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from chainlib.eth.tx import (
TxFormat,
TxFactory,
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Tx,
receipt,
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)
from chainlib.eth.connection import RPCConnection
from chainlib.eth.contract import (
ABIContractEncoder,
ABIContractType
)
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from chainlib.eth.gas import OverrideGasOracle
from chainlib.eth.nonce import RPCNonceOracle
from chainlib.eth.address import (
is_address,
to_checksum_address,
)
from hexathon import add_0x
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from eth_token_index import TokenUniqueSymbolIndex
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from eth_address_declarator import Declarator
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from eth_address_declarator.declarator import AddressDeclarator
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from giftable_erc20_token import GiftableToken
# local imports
from cic.ext.eth.rpc import parse_adapter
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from cic.extension import Extension
logg = logging.getLogger(__name__)
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class CICEth(Extension):
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def __init__(self, chain_spec, resources, proof, signer=None, rpc=None, outputs_writer=None, fee_oracle=None):
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"""Implementation for the eth extension.
The state of the resources instance will be modified.
:param chain_spec: Chain Spec that extension will operate for
:type chain_spec: chainlib.chain.ChainSpec
:param resources: Chain application resources to deploy or interface with
:type resources: dict
:param proof: Proof object to publish
:type proof: cic.proof.Proof
:param signer: Signer capable of generating signatures for chain aplication deployments
:type signer: funga.signer.Signer
:param rpc: RPC adapter capable of submitting and querying the chain network node
:type rpc: chainlib.connection.RPCConnection
:param outputs_writer: Writer interface receiving the output of the processor
:type outputs_writer: cic.output.OutputWriter
:param fee_oracle: Fee oracle required by signer
:type fee_oracle: chainlib.fee.FeeOracle
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"""
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super(CICEth, self).__init__(chain_spec, resources, proof, signer=signer, rpc=rpc, outputs_writer=outputs_writer)
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self.fee_oracle = fee_oracle
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self.tx_format = TxFormat.RAW_ARGS
if self.rpc != None:
self.tx_format = TxFormat.JSONRPC
elif self.signer != None:
self.tx_format = TxFormat.RLP_SIGNED
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def __detect_arg_type(self, v):
typ = None
try:
int(v, 10)
typ = ABIContractType.UINT256
except TypeError:
pass
if typ == None:
try:
vv = strip_0x(v)
if is_address(vv):
typ = ABIContractType.ADDRESS
else:
typ = ABIContractType.BYTES32
except ValueError:
pass
if typ == None:
try:
v.encode('utf-8')
typ = ABIContractType.STRING
except ValueError:
pass
if typ == None:
raise ValueError('cannot automatically determine type for value {}'.format(v))
logg.info('argument {} parsed as abi contract type {}'.format(typ.value))
return typ
def __order_args(self):
args = [
self.token_details['name'],
self.token_details['symbol'],
self.token_details['precision'],
]
args_types = [
ABIContractType.STRING.value,
ABIContractType.STRING.value,
ABIContractType.UINT256.value,
]
for i, x in enumerate(self.token_details['extra']):
args.append(x)
typ = None
if self.token_details['extra_types'] != None:
typ = self.token_details['extra_types'][i]
else:
typ = self.__detect_arg_type(x)
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args_types.append(typ)
positions = self.token_details['positions']
if positions == None:
positions = list(range(len(args)))
return (args, args_types, positions)
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def add_outputs(self, k, v):
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"""Adds given key/value pair to outputs array.
:param k: Output key
:type k: str
:param v: Output value
:param v: bytes or str
"""
logg.debug('adding outputs {} {}'.format(k, v))
self.outputs.append((k, v))
def get_outputs(self):
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"""Get wrapper for outputs captured from processing.
:rtype: list of tuples
:return: Captured outputs
"""
return self.outputs
def process_token(self, writer=None):
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"""Deploy token, and optionally mint token supply to token deployer account.
:param writer: Writer interface receiving the output of the processor step
:type writer: cic.output.OutputWriter
"""
if writer == None:
writer = self.outputs_writer
(args, args_types, positions) = self.__order_args()
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enc = ABIContractEncoder()
for i in positions:
getattr(enc, args_types[i])(args[i])
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code = enc.get()
if self.token_code != None:
code = self.token_code + code
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logg.debug('resource {}'.format(self.resources))
signer_address = add_0x(to_checksum_address(self.resources['token']['key_account']))
nonce_oracle = None
if self.rpc != None:
nonce_oracle = RPCNonceOracle(signer_address, conn=self.rpc)
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c = TxFactory(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=self.fee_oracle)
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tx = c.template(signer_address, None, use_nonce=True)
tx = c.set_code(tx, code)
o = c.finalize(tx, self.tx_format)
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token_address_tx = None
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r = None
if self.rpc != None:
r = self.rpc.do(o[1])
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token_address_tx = r
o = self.rpc.wait(r)
o = Tx.src_normalize(o)
self.token_address = o['contract_address']
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elif self.signer != None:
r = o[1]
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token_address_tx = r
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if r == None:
r = code
writer.write('token', r.encode('utf-8'))
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writer.write('token_address', self.token_address.encode('utf-8'))
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self.add_outputs('token', r)
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if self.token_details['supply'] > 0:
c = GiftableToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=self.fee_oracle)
o = c.mint_to(self.token_address, self.resources['token']['key_account'], self.resources['token']['key_account'], self.token_details['supply'])
r = None
if self.rpc != None:
r = self.rpc.do(o[1])
self.rpc.wait(r)
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writer.write('token_supply', r.encode('utf-8'))
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elif self.signer != None:
r = o[1]
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writer.write('token_supply', json.dumps(r).encode('utf-8'))
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else:
r = o
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writer.write('token_supply', r.encode('utf-8'))
return token_address_tx
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def process_token_index(self, writer=None):
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"""Register deployed token with token index.
:param writer: Writer interface receiving the output of the processor step
:type writer: cic.output.OutputWriter
"""
if writer == None:
writer = self.outputs_writer
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signer_address = add_0x(to_checksum_address(self.resources['token_index']['key_account']))
contract_address = add_0x(to_checksum_address(self.resources['token_index']['reference']))
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gas_oracle = OverrideGasOracle(limit=TokenUniqueSymbolIndex.gas(), conn=self.rpc)
nonce_oracle = None
if self.rpc != None:
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nonce_oracle = RPCNonceOracle(add_0x(signer_address), conn=self.rpc)
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c = TokenUniqueSymbolIndex(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
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o = c.register(contract_address, signer_address, self.token_address, tx_format=self.tx_format)
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r = None
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if self.rpc != None:
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r = self.rpc.do(o[1])
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self.rpc.wait(r)
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elif self.signer != None:
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r = o[1]
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else:
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r = o
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writer.write('token_index', r.encode('utf-8'))
self.add_outputs('token_index', r)
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return r
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def process_address_declarator(self, writer=None):
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"""Register token proofs with address declarator.
:param writer: Writer interface receiving the output of the processor step
:type writer: cic.output.OutputWriter
"""
if writer == None:
writer = self.outputs_writer
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signer_address = add_0x(to_checksum_address(self.resources['address_declarator']['key_account']))
contract_address = add_0x(to_checksum_address(self.resources['address_declarator']['reference']))
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gas_oracle = OverrideGasOracle(limit=AddressDeclarator.gas(), conn=self.rpc)
nonce_oracle = None
if self.rpc != None:
nonce_oracle = RPCNonceOracle(signer_address, conn=self.rpc)
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c = Declarator(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=gas_oracle)
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results = []
#(main_proof, all_proofs) = self.proof.get()
#for proof in all_proofs:
#logg.debug('proof {} '.format(proof))
(k, v) = self.proof.root()
fk = 'address_declarator_' + k
o = c.add_declaration(contract_address, signer_address, self.token_address, k, tx_format=self.tx_format)
r = None
if self.rpc != None:
r = self.rpc.do(o[1])
self.rpc.wait(r)
elif self.signer != None:
r = o[1]
else:
r = o
self.add_outputs(fk, r)
results.append(r)
v = r.encode('utf-8')
if writer != None:
writer.write(fk, v)
return results
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def prepare_extension(self):
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"""Sets token address for extension if defined in settings.
"""
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super(CICEth, self).prepare_extension()
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if self.token_address != None:
self.token_address = add_0x(to_checksum_address(self.token_address))
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def new(chain_spec, resources, proof, signer_hint=None, rpc=None, outputs_writer=None):
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"""Convenience function to enable object instantiation through predictable module symbol
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See CICEth constructor for details.
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"""
return CICEth(chain_spec, resources, proof, signer=signer_hint, rpc=rpc, outputs_writer=outputs_writer)