mirror of
git://holbrook.no/erc20-demurrage-token
synced 2024-09-27 04:37:20 +02:00
138 lines
5.0 KiB
Python
138 lines
5.0 KiB
Python
# standard imports
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import logging
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# external imports
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from chainlib.eth.unittest.ethtester import create_tester_signer
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from chainlib.eth.unittest.base import TestRPCConnection
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from chainlib.eth.tx import (
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receipt,
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Tx,
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)
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from chainlib.eth.nonce import RPCNonceOracle
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from chainlib.eth.gas import (
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OverrideGasOracle,
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Gas,
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)
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from chainlib.eth.address import to_checksum_address
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from chainlib.eth.block import (
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block_latest,
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block_by_number,
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)
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from crypto_dev_signer.keystore.dict import DictKeystore
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from crypto_dev_signer.eth.signer import ReferenceSigner as EIP155Signer
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from hexathon import (
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strip_0x,
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add_0x,
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)
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# local imports
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from erc20_demurrage_token import DemurrageToken
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logg = logging.getLogger(__name__)
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class DemurrageTokenSimulation:
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def __init__(self, chain_spec, settings, redistribute=True, cap=0, actors=1):
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self.chain_spec = chain_spec
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self.accounts = []
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self.keystore = DictKeystore()
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self.signer = EIP155Signer(self.keystore)
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self.eth_helper = create_tester_signer(self.keystore)
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self.eth_backend = self.eth_helper.backend
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self.gas_oracle = OverrideGasOracle(limit=100000, price=1)
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self.rpc = TestRPCConnection(None, self.eth_helper, self.signer)
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for a in self.keystore.list():
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self.accounts.append(add_0x(to_checksum_address(a)))
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settings.sink_address = self.accounts[0]
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nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.rpc)
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c = DemurrageToken(chain_spec, signer=self.signer, nonce_oracle=nonce_oracle)
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(tx_hash, o) = c.constructor(self.accounts[0], settings, redistribute=redistribute, cap=cap)
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self.rpc.do(o)
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o = receipt(tx_hash)
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r = self.rpc.do(o)
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if (r['status'] != 1):
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raise RuntimeError('contract deployment failed')
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self.address = r['contract_address']
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self.period_seconds = settings.period_minutes * 60
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o = block_latest()
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r = self.rpc.do(o)
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self.last_block = r
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o = block_by_number(r)
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r = self.rpc.do(o)
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self.last_timestamp = r['timestamp']
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self.actors = []
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for i in range(actors):
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idx = i % 10
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address = self.keystore.new()
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self.actors.append(address)
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self.accounts.append(address)
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nonce_oracle = RPCNonceOracle(self.accounts[idx], conn=self.rpc)
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c = Gas(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=self.gas_oracle)
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(tx_hash, o) = c.create(self.accounts[idx], address, 100000 * 1000000)
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self.rpc.do(o)
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o = receipt(tx_hash)
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r = self.rpc.do(o)
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if r['status'] != 1:
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raise RuntimeError('failed gas transfer to account #{}: {} from {}'.format(i, address, self.accounts[idx]))
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logg.debug('added actor account #{}: {}'.format(i, address))
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self.eth_helper.disable_auto_mine_transactions()
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logg.info('intialized at block {} timestamp {} period {} demurrage level {} sink address {} (first address in keystore)'.format(
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self.last_block,
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self.last_timestamp,
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settings.period_minutes,
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settings.demurrage_level,
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settings.sink_address,
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)
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)
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self.caller_contract = DemurrageToken(self.chain_spec)
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def mint(self, recipient, value):
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nonce_oracle = RPCNonceOracle(self.accounts[0], conn=self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=self.gas_oracle)
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(tx_hash, o) = c.mint_to(self.address, self.accounts[0], recipient, value)
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self.rpc.do(o)
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return tx_hash
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def transfer(self, sender, recipient, value):
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nonce_oracle = RPCNonceOracle(sender, conn=self.rpc)
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c = DemurrageToken(self.chain_spec, signer=self.signer, nonce_oracle=nonce_oracle, gas_oracle=self.gas_oracle)
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(tx_hash, o) = c.transfer(self.address, sender, recipient, value)
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self.rpc.do(o)
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return tx_hash
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def balance(self, holder):
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o = self.caller_contract.balance_of(self.address, holder, sender_address=self.accounts[0])
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r = self.rpc.do(o)
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return self.caller_contract.parse_balance_of(r)
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def next(self):
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self.last_timestamp += self.period_seconds
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self.eth_helper.mine_block()
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self.eth_helper.time_travel(self.last_timestamp)
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self.last_block += 1
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o = block_by_number(self.last_block)
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r = self.rpc.do(o)
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for tx_hash in r['transactions']:
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o = receipt(tx_hash)
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rcpt = self.rpc.do(o)
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if rcpt['status'] == 0:
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raise RuntimeError('tx {} (block {} index {}) failed'.format(tx_hash, self.last_block, rcpt['transaction_index']))
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logg.debug('tx {} (block {} index {}) verified'.format(tx_hash, self.last_block, rcpt['transaction_index']))
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return (self.last_block, self.last_timestamp)
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