def add_receivable_transaction(self, address, transaction_hash,
sender_block_hash):
validate_canonical_address(address, title="Storage Address")
validate_is_bytes(transaction_hash, title="Transaction Hash")
validate_is_bytes(sender_block_hash, title="Sender Block Hash")
#this is the wallet address people send money to when slashed. It is a sink
if address == SLASH_WALLET_ADDRESS:
return
#first lets make sure we don't already have the transaction
if self.get_receivable_transaction(address,
transaction_hash) is not False:
raise ValueError(
"Tried to save a receivable transaction that was already saved"
)
account = self._get_account(address)
receivable_transactions = account.receivable_transactions
new_receivable_transactions = receivable_transactions + (
TransactionKey(transaction_hash, sender_block_hash), )
self.logger.debug(
"adding receivable transaction {}".format(transaction_hash))
#self.logger.debug(new_receivable_transactions)
self._set_account(
address,
account.copy(receivable_transactions=new_receivable_transactions))
def delete_receivable_transaction(self, address, transaction_hash):
validate_canonical_address(address, title="Storage Address")
validate_is_bytes(transaction_hash, title="Transaction Hash")
self.logger.debug("deleting receivable tx {}".format(transaction_hash))
account = self._get_account(address)
receivable_transactions = list(
self.get_receivable_transactions(address))
i = 0
found = False
for tx_key in receivable_transactions:
if tx_key.transaction_hash == transaction_hash:
found = True
break
i += 1
if found == True:
del receivable_transactions[i]
else:
raise ValueError(
"transaction hash {0} not found in receivable_transactions database for wallet {1}"
.format(transaction_hash, address))
self._set_account(
address,
account.copy(
receivable_transactions=tuple(receivable_transactions)))
def add_receivable_transaction(self, address: Address, transaction_hash: Hash32, sender_block_hash: Hash32, is_contract_deploy:bool = False) -> None:
validate_canonical_address(address, title="Wallet Address")
validate_is_bytes(transaction_hash, title="Transaction Hash")
validate_is_bytes(sender_block_hash, title="Sender Block Hash")
#this is the wallet address people send money to when slashed. It is a sink
if address == SLASH_WALLET_ADDRESS:
return
account = self._get_account(address)
receivable_transactions = account.receivable_transactions
# first lets make sure we don't already have the transaction
for tx_key in receivable_transactions:
if tx_key.transaction_hash == transaction_hash:
raise ValueError("Tried to save a receivable transaction that was already saved. TX HASH = {}".format(encode_hex(transaction_hash)))
new_receivable_transactions = receivable_transactions + (TransactionKey(transaction_hash, sender_block_hash), )
#self.logger.debug(new_receivable_transactions)
self.logger.debug("Adding receivable transaction {} to account {}".format(encode_hex(transaction_hash), encode_hex(address)))
self._set_account(address, account.copy(receivable_transactions=new_receivable_transactions))
#finally, if this is a smart contract, lets add it to the list of smart contracts with pending transactions
if is_contract_deploy or self.get_code_hash(address) != EMPTY_SHA3:
self.logger.debug("Adding address to list of smart contracts with pending transactions")
#we only need to run this when adding the first one.
self._add_address_to_smart_contracts_with_pending_transactions(address)
def delete_chain(self,
address,
delete_from_historical_root_hashes: bool = True):
validate_canonical_address(address, title="Wallet Address")
self.delete_chain_head_hash(address)
if delete_from_historical_root_hashes:
self.add_block_hash_to_timestamp(address, BLANK_HASH, 0)
def persist(self, save_account_hash=False, wallet_address=None) -> None:
self._journaldb.persist()
self._batchdb.commit(apply_deletes=True)
if save_account_hash:
validate_canonical_address(wallet_address, title="Address")
self.save_current_account_with_hash_lookup(wallet_address)
def delete_receivable_transaction(self, address: Address, transaction_hash: Hash32) -> None:
validate_canonical_address(address, title="Storage Address")
validate_is_bytes(transaction_hash, title="Transaction Hash")
self.logger.debug("deleting receivable tx {} from account {}".format(encode_hex(transaction_hash), encode_hex(address)))
account = self._get_account(address)
receivable_transactions = list(self.get_receivable_transactions(address))
i = 0
found = False
for tx_key in receivable_transactions:
if tx_key.transaction_hash == transaction_hash:
found = True
break
i +=1
if found == True:
del receivable_transactions[i]
else:
raise ReceivableTransactionNotFound("transaction hash {0} not found in receivable_transactions database for wallet {1}".format(transaction_hash, address))
self._set_account(address, account.copy(receivable_transactions=tuple(receivable_transactions)))
if self.get_code_hash(address) != EMPTY_SHA3:
if len(receivable_transactions) == 0:
self.logger.debug("Removing address from list of smart contracts with pending transactions")
self._remove_address_from_smart_contracts_with_pending_transactions(address)
def get_code(self, address):
validate_canonical_address(address, title="Storage Address")
try:
return self._journaldb[self.get_code_hash(address)]
except KeyError:
return b""
def get_chain_head_hash_at_timestamp(self, address, timestamp):
validate_canonical_address(address, title="Wallet Address")
validate_uint256(timestamp, title='timestamp')
#make sure it isnt in the future
if timestamp > int(time.time()):
raise InvalidHeadRootTimestamp()
#first make sure the timestamp is correct.
if timestamp % TIME_BETWEEN_HEAD_HASH_SAVE != 0:
raise InvalidHeadRootTimestamp()
historical_roots = self.get_historical_root_hashes()
if historical_roots is None:
return None
if timestamp < historical_roots[0][0]:
return None
historical_roots_dict = dict(historical_roots)
try:
historical_root = historical_roots_dict[timestamp]
except KeyError:
historical_root = historical_roots[-1][1]
new_chain_head_db = ChainHeadDB(self.db, historical_root)
head_hash = new_chain_head_db._trie_cache.get(address)
return head_hash
def add_log_entry(self, account: Address, topics: List[int], data: bytes) -> None:
validate_canonical_address(account, title="Log entry address")
for topic in topics:
validate_uint256(topic, title="Log entry topic")
validate_is_bytes(data, title="Log entry data")
self._log_entries.append(
(self.transaction_context.get_next_log_counter(), account, topics, data))
def save_current_account_with_hash_lookup(self, wallet_address):
validate_canonical_address(wallet_address, title="Address")
account_hash = self.get_account_hash(wallet_address)
account = self._get_account(wallet_address)
rlp_account = rlp.encode(account, sedes=Account)
lookup_key = SchemaV1.make_account_by_hash_lookup_key(account_hash)
self.db[lookup_key] = rlp_account
def persist(self, save_account_hash = False, wallet_address = None) -> None:
self.logger.debug('Persisting account db. save_account_hash {} | wallet_address {}'.format(save_account_hash, wallet_address))
self._journaldb.persist()
self._batchdb.commit(apply_deletes=True)
if save_account_hash:
validate_canonical_address(wallet_address, title="Address")
self.save_current_account_with_hash_lookup(wallet_address)
def register_account_for_deletion(self, beneficiary: Address) -> None:
validate_canonical_address(beneficiary, title="Self destruct beneficiary address")
if self.msg.storage_address in self.accounts_to_delete:
raise ValueError(
"Invariant. Should be impossible for an account to be "
"registered for deletion multiple times"
)
self.accounts_to_delete[self.msg.storage_address] = beneficiary
def set_code(self, address, code):
validate_canonical_address(address, title="Storage Address")
validate_is_bytes(code, title="Code")
account = self._get_account(address)
code_hash = keccak(code)
self._journaldb[code_hash] = code
self._set_account(address, account.copy(code_hash=code_hash))
def revert_to_account_from_hash(self, account_hash, wallet_address):
validate_canonical_address(wallet_address, title="Address")
validate_is_bytes(account_hash, title="account_hash")
lookup_key = SchemaV1.make_account_by_hash_lookup_key(account_hash)
try:
rlp_encoded = self.db[lookup_key]
account = rlp.decode(rlp_encoded, sedes=Account)
self._set_account(wallet_address, account)
except KeyError:
raise StateRootNotFound()
def get_storage(self, address, slot):
validate_canonical_address(address, title="Storage Address")
validate_uint256(slot, title="Storage Slot")
account = self._get_account(address)
storage = HashTrie(HexaryTrie(self._journaldb, account.storage_root))
slot_as_key = pad32(int_to_big_endian(slot))
if slot_as_key in storage:
encoded_value = storage[slot_as_key]
return rlp.decode(encoded_value, sedes=rlp.sedes.big_endian_int)
else:
return 0
def _get_peer_node_health(
self, peer_wallet_address: Address,
after_block_number: BlockNumber) -> PeerNodeHealth:
validate_canonical_address(peer_wallet_address, title="Value")
validate_uint64(after_block_number, 'block_number')
key = SchemaV1.make_peer_node_health_lookup(peer_wallet_address,
after_block_number)
try:
rlp_peer_node_health = self.db[key]
peer_node_health = rlp.decode(rlp_peer_node_health,
sedes=PeerNodeHealth)
except KeyError:
peer_node_health = PeerNodeHealth()
return peer_node_health
def set_storage(self, address, slot, value):
validate_uint256(value, title="Storage Value")
validate_uint256(slot, title="Storage Slot")
validate_canonical_address(address, title="Storage Address")
account = self._get_account(address)
storage = HashTrie(HexaryTrie(self._journaldb, account.storage_root))
slot_as_key = pad32(int_to_big_endian(slot))
if value:
encoded_value = rlp.encode(value)
storage[slot_as_key] = encoded_value
else:
del storage[slot_as_key]
self._set_account(address, account.copy(storage_root=storage.root_hash))
def __init__(self,
gas,
to,
sender,
value,
data,
code,
depth=0,
create_address=None,
code_address=None,
should_transfer_value=True,
is_static=False,
refund_amount=0):
validate_uint256(gas, title="Message.gas")
self.gas = gas # type: int
if to != CREATE_CONTRACT_ADDRESS:
validate_canonical_address(to, title="Message.to")
self.to = to
validate_canonical_address(sender, title="Message.sender")
self.sender = sender
validate_uint256(value, title="Message.value")
self.value = value
validate_is_bytes(data, title="Message.data")
self.data = data
validate_is_integer(depth, title="Message.depth")
validate_gte(depth, minimum=0, title="Message.depth")
self.depth = depth
validate_is_bytes(code, title="Message.code")
self.code = code
if create_address is not None:
validate_canonical_address(create_address,
title="Message.storage_address")
self.storage_address = create_address
if code_address is not None:
validate_canonical_address(code_address,
title="Message.code_address")
self.code_address = code_address
validate_is_boolean(should_transfer_value,
title="Message.should_transfer_value")
self.should_transfer_value = should_transfer_value
validate_is_integer(depth, title="Message.refund_amount")
self.refund_amount = refund_amount
validate_is_boolean(is_static, title="Message.is_static")
self.is_static = is_static
def __init__(self, origin: Address, send_tx_hash: Hash32, caller_chain_address:Address, gas_price: int = None, receive_tx_hash: Hash32 = None, is_receive: bool = False, is_refund: bool = False):
if gas_price is not None:
validate_uint256(gas_price, title="TransactionContext.gas_price")
self._gas_price = gas_price
validate_canonical_address(origin, title="TransactionContext.origin")
self._origin = origin
validate_canonical_address(caller_chain_address, title='caller_chain_address')
self._caller_chain_address = caller_chain_address
validate_is_boolean(is_receive, title="is_receive")
self._is_receive = is_receive
validate_is_boolean(is_refund, title="is_from_refund")
self._is_refund = is_refund
validate_word(send_tx_hash, title="send_tx_hash")
self._send_tx_hash = send_tx_hash
if receive_tx_hash is not None:
validate_word(receive_tx_hash, title="receive_tx_hash")
self._receive_tx_hash = receive_tx_hash
self._log_counter = itertools.count()
def calculate_final_reward_type_1_amount(
self,
wallet_address: Address,
at_timestamp: Timestamp = None) -> int:
'''
:param wallet_address:
:return:
'''
validate_canonical_address(wallet_address, 'wallet_address')
if at_timestamp == None:
at_timestamp = int(time.time())
fractional_interest = self.reward_type_1_amount_factor
amount = self.calculate_reward_based_on_fractional_interest(
wallet_address, fractional_interest, at_timestamp)
return amount
def validate(self):
validate_canonical_address(self.recipient_node_wallet_address, title="recipient_node_wallet_address")
validate_uint256(self.score, title="score")
validate_uint256(self.since_block_number, title="since_block_number")
validate_uint256(self.timestamp, title="timestamp")
validate_uint256(self.v, title="v")
validate_uint256(self.r, title="r")
validate_uint256(self.s, title="s")
validate_lt_secpk1n(self.r, title="r")
validate_gte(self.r, minimum=1, title="r")
validate_lt_secpk1n(self.s, title="s")
validate_gte(self.s, minimum=1, title="s")
validate_gte(self.v, minimum=self.v_min, title="v")
validate_lte(self.v, maximum=self.v_max, title="v")
validate_lt_secpk1n2(self.s, title="s")
def validate(self):
validate_uint256(self.nonce, title="Transaction.nonce")
validate_uint256(self.gas_price, title="Transaction.gas_price")
validate_uint256(self.gas, title="Transaction.gas")
if self.to != CREATE_CONTRACT_ADDRESS:
validate_canonical_address(self.to, title="Transaction.to")
validate_uint256(self.value, title="Transaction.value")
validate_is_bytes(self.data, title="Transaction.data")
validate_uint256(self.v, title="Transaction.v")
validate_uint256(self.r, title="Transaction.r")
validate_uint256(self.s, title="Transaction.s")
validate_lt_secpk1n(self.r, title="Transaction.r")
validate_gte(self.r, minimum=1, title="Transaction.r")
validate_lt_secpk1n(self.s, title="Transaction.s")
validate_gte(self.s, minimum=1, title="Transaction.s")
validate_gte(self.v, minimum=self.v_min, title="Transaction.v")
validate_lte(self.v, maximum=self.v_max, title="Transaction.v")
super(FrontierTransaction, self).validate()
def get_receivable_transactions(self, address: Address) -> List[TransactionKey]:
validate_canonical_address(address, title="Storage Address")
account = self._get_account(address)
return account.receivable_transactions
def get_code_hash(self, address):
validate_canonical_address(address, title="Storage Address")
account = self._get_account(address)
return account.code_hash
def add_receivable_transactions(self, address: Address, transaction_keys: TransactionKey) -> None:
validate_canonical_address(address, title="Wallet Address")
for tx_key in transaction_keys:
self.add_receivable_transaction(address, tx_key.transaction_hash, tx_key.sender_block_hash)
def touch_account(self, address):
validate_canonical_address(address, title="Storage Address")
account = self._get_account(address)
self._set_account(address, account)
def account_exists(self, address):
validate_canonical_address(address, title="Storage Address")
account_lookup_key = SchemaV1.make_account_lookup_key(address)
return self._journaldb.get(account_lookup_key, b'') != b''
def delete_account(self, address):
validate_canonical_address(address, title="Storage Address")
account_lookup_key = SchemaV1.make_account_lookup_key(address)
#try:
del self._journaldb[account_lookup_key]
def has_pending_smart_contract_transactions(self, address: Address) -> bool:
validate_canonical_address(address, title="Storage Address")
address_set = set(self.get_smart_contracts_with_pending_transactions())
return address in address_set
def delete_code(self, address):
validate_canonical_address(address, title="Storage Address")
account = self._get_account(address)
self._set_account(address, account.copy(code_hash=EMPTY_SHA3))
