def add_transaction(self, tx, origin=None):
if self.is_syncing:
return # we can not evaluate the tx based on outdated state
log.debug('add_transaction',
locked=self.add_transaction_lock.locked(),
tx=tx)
assert isinstance(tx, Transaction)
assert origin is None or isinstance(origin, BaseProtocol)
if tx.hash in self.broadcast_filter:
log.debug('discarding known tx') # discard early
return
# validate transaction
try:
validate_transaction(self.chain.head_candidate, tx)
log.debug('valid tx, broadcasting')
self.broadcast_transaction(tx, origin=origin) # asap
except InvalidTransaction as e:
log.debug('invalid tx', error=e)
return
if origin is not None: # not locally added via jsonrpc
if not self.is_mining or self.is_syncing:
log.debug('discarding tx',
syncing=self.is_syncing,
mining=self.is_mining)
return
self.add_transaction_lock.acquire()
success = self.chain.add_transaction(tx)
self.add_transaction_lock.release()
if success:
self._on_new_head_candidate()
def add_transaction(self, tx, origin=None):
log.debug('add_transaction', locked=self.add_transaction_lock.locked(), tx=tx)
assert isinstance(tx, Transaction)
assert origin is None or isinstance(origin, BaseProtocol)
if tx.hash in self.broadcast_filter:
log.debug('discarding known tx') # discard early
return
# validate transaction
try:
validate_transaction(self.chain.head_candidate, tx)
log.debug('valid tx, broadcasting')
self.broadcast_transaction(tx, origin=origin) # asap
except InvalidTransaction as e:
log.debug('invalid tx', error=e)
return
if origin is not None: # not locally added via jsonrpc
if not self.is_mining or self.is_syncing:
log.debug('discarding tx', syncing=self.is_syncing, mining=self.is_mining)
return
self.add_transaction_lock.acquire()
success = self.chain.add_transaction(tx)
self.add_transaction_lock.release()
if success:
self._on_new_head_candidate()
def apply_transaction(block, tx, cb=None, validate=True):
eth_call = False
def dummy_cb(*args, **kwargs):
pass
if cb is None:
cb = dummy_cb
eth_call = True
if validate:
validate_transaction(block, tx)
log_tx.debug('TX NEW', tx_dict=tx.log_dict())
# start transacting #################
block.increment_nonce(tx.sender)
intrinsic_gas = intrinsic_gas_used(tx)
if block.number >= block.config['HOMESTEAD_FORK_BLKNUM']:
assert tx.s * 2 < transactions.secpk1n
if not tx.to or tx.to == CREATE_CONTRACT_ADDRESS:
intrinsic_gas += opcodes.CREATE[3]
if tx.startgas < intrinsic_gas:
raise InsufficientStartGas(rp('startgas', tx.startgas, intrinsic_gas))
# buy startgas
if validate:
assert block.get_balance(tx.sender) >= tx.startgas * tx.gasprice
block.delta_balance(tx.sender, -tx.startgas * tx.gasprice)
message_gas = tx.startgas - intrinsic_gas
message_data = vm.CallData([safe_ord(x) for x in tx.data], 0, len(tx.data))
message = vm.Message(tx.sender, tx.to, tx.value, message_gas, message_data, code_address=tx.to)
# MESSAGE
ext = CapVMExt(block, tx, cb)
if tx.to and tx.to != CREATE_CONTRACT_ADDRESS:
result, gas_remained, data = ext._msg(message)
log_tx.debug('_res_', result=result, gas_remained=gas_remained, data=data)
else: # CREATE
result, gas_remained, data = create_contract(ext, message)
assert utils.is_numeric(gas_remained)
log_tx.debug('_create_', result=result, gas_remained=gas_remained, data=data)
assert gas_remained >= 0
log_tx.debug("TX APPLIED", result=result, gas_remained=gas_remained,
data=data)
if not result: # 0 = OOG failure in both cases
log_tx.debug('TX FAILED', reason='out of gas',
startgas=tx.startgas, gas_remained=gas_remained)
block.gas_used += tx.startgas
block.delta_balance(block.coinbase, tx.gasprice * tx.startgas)
output = b''
success = 0
else:
log_tx.debug('TX SUCCESS', data=data)
gas_used = tx.startgas - gas_remained
block.refunds += len(set(block.suicides)) * opcodes.GSUICIDEREFUND
if block.refunds > 0:
log_tx.debug('Refunding', gas_refunded=min(block.refunds, gas_used // 2))
gas_remained += min(block.refunds, gas_used // 2)
gas_used -= min(block.refunds, gas_used // 2)
block.refunds = 0
# sell remaining gas
block.delta_balance(tx.sender, tx.gasprice * gas_remained)
block.delta_balance(block.coinbase, tx.gasprice * gas_used)
block.gas_used += gas_used
if tx.to:
output = b''.join(map(ascii_chr, data))
else:
output = data
success = 1
block.commit_state()
suicides = block.suicides
block.suicides = []
for s in suicides:
block.ether_delta -= block.get_balance(s)
block.set_balance(s, 0)
block.del_account(s)
block.add_transaction_to_list(tx)
block.logs = []
return success, output
