async def create_and_broadcast(self, request):
account = None
tx = None
try:
tx, account, password = await self._create_tx_helper(request)
try:
result = await self._broadcast_transaction(
str(tx), tx.hash(), account)
except aiorpcx.jsonrpc.RPCError as e:
raise Fault(Errors.AIORPCX_ERROR_CODE, e.message)
self.prev_transaction = result
response = {"txid": result}
self.logger.debug("successful broadcast for %s", result)
return good_response(response)
except Fault as e:
if tx and tx.is_complete(
) and e.code != Errors.ALREADY_SENT_TRANSACTION_CODE:
self.cleanup_tx(tx, account)
return fault_to_http_response(e)
except Exception as e:
self.logger.exception(
"unexpected error in create_and_broadcast handler")
if tx and tx.is_complete() and not (
isinstance(e, AssertionError)
and str(e) == 'duplicate set not supported'):
self.cleanup_tx(tx, account)
return fault_to_http_response(
Fault(code=Errors.GENERIC_INTERNAL_SERVER_ERROR,
message=str(e)))
def raise_for_var_missing(self, vars, required_vars: List[str]):
for varname in required_vars:
if vars.get(varname) is None:
if varname in HEADER_VARS:
raise Fault(Errors.HEADER_VAR_NOT_PROVIDED_CODE,
Errors.HEADER_VAR_NOT_PROVIDED_MESSAGE.format(varname))
else:
raise Fault(Errors.BODY_VAR_NOT_PROVIDED_CODE,
Errors.BODY_VAR_NOT_PROVIDED_MESSAGE.format(varname))
def _get_wallet_path(self, wallet_name: str) -> str:
"""returns parent wallet path. The wallet_name must include .sqlite extension"""
wallet_path = os.path.join(self.wallets_path, wallet_name)
wallet_path = os.path.normpath(wallet_path)
if wallet_name != os.path.basename(wallet_path):
raise Fault(Errors.BAD_WALLET_NAME_CODE, Errors.BAD_WALLET_NAME_MESSAGE)
if os.path.exists(wallet_path):
return wallet_path
else:
raise Fault(Errors.WALLET_NOT_FOUND_CODE, Errors.WALLET_NOT_FOUND_MESSAGE)
def check_if_wallet_exists(self, file_path):
if os.path.exists(file_path):
raise Fault(code=Errors.BAD_WALLET_NAME_CODE,
message=f"'{file_path + DATABASE_EXT}' already exists")
if not file_path.endswith(DATABASE_EXT):
if os.path.exists(file_path + DATABASE_EXT):
raise Fault(
code=Errors.BAD_WALLET_NAME_CODE,
message=f"'{file_path + DATABASE_EXT}' already exists")
def raise_for_wallet_availability(self,
wallet_name: str) -> Union[str, Fault]:
if not self._wallet_name_available(wallet_name):
raise Fault(
code=Errors.WALLET_NOT_FOUND_CODE,
message=Errors.WALLET_NOT_FOUND_MESSAGE.format(wallet_name))
return wallet_name
async def _create_tx_helper(self, request) -> Union[Tuple, Fault]:
try:
vars = await self.argparser(request)
self.raise_for_var_missing(vars, required_vars=[VNAME.WALLET_NAME, VNAME.ACCOUNT_ID,
VNAME.OUTPUTS, VNAME.PASSWORD])
wallet_name = vars[VNAME.WALLET_NAME]
index = vars[VNAME.ACCOUNT_ID]
outputs = vars[VNAME.OUTPUTS]
utxos = vars.get(VNAME.UTXOS, None)
utxo_preselection = vars.get(VNAME.UTXO_PRESELECTION, True)
password = vars.get(VNAME.PASSWORD, None)
child_wallet = self._get_account(wallet_name, index)
if not utxos:
exclude_frozen = vars.get(VNAME.EXCLUDE_FROZEN, True)
confirmed_only = vars.get(VNAME.CONFIRMED_ONLY, False)
mature = vars.get(VNAME.MATURE, True)
utxos = child_wallet.get_utxos(exclude_frozen=exclude_frozen,
confirmed_only=confirmed_only, mature=mature)
if utxo_preselection: # Defaults to True
utxos = self.preselect_utxos(utxos, outputs)
# Todo - loop.run_in_executor
tx = child_wallet.make_unsigned_transaction(utxos, outputs, self.app_state.config)
return tx, child_wallet, password
except NotEnoughFunds:
raise Fault(Errors.INSUFFICIENT_COINS_CODE, Errors.INSUFFICIENT_COINS_MESSAGE)
async def broadcast(self, request):
"""Broadcast a rawtx (hex string) to the network. """
try:
required_vars = [VNAME.WALLET_NAME, VNAME.ACCOUNT_ID, VNAME.RAWTX]
vars = await self.argparser(request, required_vars=required_vars)
wallet_name = vars[VNAME.WALLET_NAME]
index = vars[VNAME.ACCOUNT_ID]
rawtx = vars[VNAME.RAWTX]
account = self._get_account(wallet_name, index)
tx = Transaction.from_hex(rawtx)
self.raise_for_duplicate_tx(tx)
frozen_utxos = self.app_state.app.get_and_set_frozen_utxos_for_tx(
tx, account)
result = await self._broadcast_transaction(rawtx, tx.hash(),
account)
self.prev_transaction = result
response = {"value": {"txid": result}}
return good_response(response)
except Fault as e:
return fault_to_http_response(e)
except aiorpcx.jsonrpc.RPCError as e:
account.set_frozen_coin_state(frozen_utxos, False)
self.remove_signed_transaction(tx, account)
return fault_to_http_response(
Fault(Errors.AIORPCX_ERROR_CODE, e.message))
def raise_for_duplicate_tx(self, tx):
"""because the network can be very slow to give this important feedback and instead will
return the txid as an http 200 response."""
if tx.txid() == self.prev_transaction:
message = "You've already sent this transaction: {}".format(tx.txid())
fault = Fault(Errors.ALREADY_SENT_TRANSACTION_CODE, message)
raise fault
return
def _fetch_transaction_dto(self, account: AbstractAccount,
tx_id) -> Optional[Dict]:
tx_hash = hex_str_to_hash(tx_id)
tx = account.get_transaction(tx_hash)
if not tx:
raise Fault(Errors.TRANSACTION_NOT_FOUND_CODE,
Errors.TRANSACTION_NOT_FOUND_MESSAGE)
return {"tx_hex": tx.to_hex()}
def remove_transaction(self, tx_hash: bytes, wallet: AbstractAccount):
# removal of txs that are not in the StateSigned tx state is disabled for now as it may
# cause issues with expunging utxos inadvertently.
try:
tx = wallet.get_transaction(tx_hash)
tx_flags = wallet._wallet._transaction_cache.get_flags(tx_hash)
is_signed_state = (tx_flags
& TxFlags.StateSigned) == TxFlags.StateSigned
# Todo - perhaps remove restriction to StateSigned only later (if safe for utxos state)
if tx and is_signed_state:
wallet.delete_transaction(tx_hash)
if tx and not is_signed_state:
raise Fault(Errors.DISABLED_FEATURE_CODE,
Errors.DISABLED_FEATURE_MESSAGE)
except MissingRowError:
raise Fault(Errors.TRANSACTION_NOT_FOUND_CODE,
Errors.TRANSACTION_NOT_FOUND_MESSAGE)
def _get_account(self, wallet_name: str, account_id: int=1) \
-> Union[Fault, AbstractAccount]:
parent_wallet = self._get_parent_wallet(wallet_name=wallet_name)
try:
child_wallet = parent_wallet.get_account(account_id)
except KeyError:
message = f"There is no account at account_id: {account_id}."
raise Fault(Errors.WALLET_NOT_FOUND_CODE, message)
return child_wallet
def _get_parent_wallet(self, wallet_name: str) -> Wallet:
"""returns a child wallet object"""
path_result = self._get_wallet_path(wallet_name)
parent_wallet = self.app_state.daemon.get_wallet(path_result)
if not parent_wallet:
message = Errors.LOAD_BEFORE_GET_MESSAGE.format(
get_network_type(), 'wallet_name.sqlite')
raise Fault(code=Errors.LOAD_BEFORE_GET_CODE, message=message)
return parent_wallet
async def _load_wallet(self, wallet_name: Optional[str] = None) -> Union[Fault, Wallet]:
"""Loads one parent wallet into the daemon and begins synchronization"""
if not wallet_name.endswith(".sqlite"):
wallet_name += ".sqlite"
path_result = self._get_wallet_path(wallet_name)
parent_wallet = self.app_state.daemon.load_wallet(path_result)
if parent_wallet is None:
raise Fault(Errors.WALLET_NOT_LOADED_CODE,
Errors.WALLET_NOT_LOADED_MESSAGE)
return parent_wallet
async def main():
async with aiohttp.ClientSession() as session:
tasks = [
asyncio.create_task(self.create_and_send(
session, payload2)) for _ in range(0, n_txs)
]
results = await asyncio.gather(*tasks, return_exceptions=True)
for result in results:
error_code = result.get('code')
if error_code:
assert False, str(Fault(error_code, result.get('message')))
async def create_tx(self, request):
"""
General purpose transaction builder.
- Should handle any kind of output script.( see bitcoinx.address for
utilities for building p2pkh, multisig etc outputs as hex strings.)
"""
account = None
tx = None
try:
tx, account, password = await self._create_tx_helper(request)
response = {"txid": tx.txid(), "rawtx": str(tx)}
return good_response(response)
except Fault as e:
if tx and tx.is_complete() and e.code != Fault(
Errors.ALREADY_SENT_TRANSACTION_CODE):
self.cleanup_tx(tx, account)
return fault_to_http_response(e)
except Exception as e:
if tx and tx.is_complete():
self.cleanup_tx(tx, account)
return fault_to_http_response(
Fault(code=Errors.GENERIC_INTERNAL_SERVER_ERROR,
message=str(e)))
async def create_and_broadcast(self, request):
try:
tx, account, password = await self._create_tx_helper(request)
self.raise_for_duplicate_tx(tx)
account.sign_transaction(tx, password)
frozen_utxos = self.app_state.app.get_and_set_frozen_utxos_for_tx(
tx, account)
result = await self._broadcast_transaction(str(tx), tx.hash(),
account)
self.prev_transaction = result
response = {"value": {"txid": result}}
self.logger.debug("successful broadcast for %s", result)
return good_response(response)
except Fault as e:
return fault_to_http_response(e)
except aiorpcx.jsonrpc.RPCError as e:
account.set_frozen_coin_state(frozen_utxos, False)
self.remove_signed_transaction(tx, account)
return fault_to_http_response(
Fault(Errors.AIORPCX_ERROR_CODE, e.message))
def test_fault_to_http_response():
fault_negative = Fault(-1, '')
fault_zero = Fault(0, '<message>')
fault_4xx = Fault(40000, '<message>')
fault_404 = Fault(40400, '<not found message>')
fault_5xx = Fault(50000, '<message>')
fault_other = Fault(60000, '<message>')
assert fault_to_http_response(fault_negative)._body == \
bad_request(fault_negative.code, fault_negative.message)._body
assert fault_to_http_response(fault_zero)._body == \
bad_request(fault_zero.code, fault_zero.message)._body
assert fault_to_http_response(fault_4xx)._body == \
bad_request(fault_4xx.code, fault_4xx.message)._body
assert fault_to_http_response(fault_404)._body == \
not_found(fault_404.code, fault_404.message)._body
assert fault_to_http_response(fault_5xx)._body == \
internal_server_error(fault_5xx.code, fault_5xx.message)._body
assert fault_to_http_response(fault_other)._body == \
bad_request(fault_other.code, fault_other.message)._body
def account_id_if_isdigit(self, index: str) -> Union[int, Fault]:
if not index.isdigit():
message = "child wallet index in url must be an integer. You tried " \
"index='%s'." % index
raise Fault(code=Errors.GENERIC_BAD_REQUEST_CODE, message=message)
return int(index)
async def split_utxos(self, request) -> Union[Fault, Any]:
account = None
tx = None
try:
required_vars = [
VNAME.WALLET_NAME, VNAME.ACCOUNT_ID, VNAME.SPLIT_COUNT,
VNAME.PASSWORD
]
vars = await self.argparser(request, required_vars=required_vars)
wallet_name = vars[VNAME.WALLET_NAME]
account_id = vars[VNAME.ACCOUNT_ID]
split_count = vars[VNAME.SPLIT_COUNT]
# optional
split_value = vars.get(VNAME.SPLIT_VALUE, 10000)
password = vars.get(VNAME.PASSWORD, None)
desired_utxo_count = vars.get(VNAME.DESIRED_UTXO_COUNT, 2000)
require_confirmed = vars.get(VNAME.REQUIRE_CONFIRMED, False)
account = self._get_account(wallet_name, account_id)
# Approximate size of a transaction with one P2PKH input and one P2PKH output.
base_fee = self.app_state.config.estimate_fee(203)
loop = asyncio.get_event_loop()
# run in thread - CPU intensive code
partial_coin_selection = partial(
self.select_inputs_and_outputs,
self.app_state.config,
account,
base_fee,
split_count=split_count,
desired_utxo_count=desired_utxo_count,
require_confirmed=require_confirmed,
split_value=split_value)
split_result = await loop.run_in_executor(self.txb_executor,
partial_coin_selection)
if isinstance(split_result, Fault):
return fault_to_http_response(split_result)
self.logger.debug("split result: %s", split_result)
utxos, outputs, attempted_split = split_result
if not attempted_split:
fault = Fault(Errors.SPLIT_FAILED_CODE,
Errors.SPLIT_FAILED_MESSAGE)
return fault_to_http_response(fault)
tx = account.make_unsigned_transaction(utxos, outputs,
self.app_state.config)
account.sign_transaction(tx, password)
self.raise_for_duplicate_tx(tx)
# broadcast
result = await self._broadcast_transaction(str(tx), tx.hash(),
account)
self.prev_transaction = result
response = {"txid": result}
return good_response(response)
except Fault as e:
if tx and tx.is_complete() and e.code != Fault(
Errors.ALREADY_SENT_TRANSACTION_CODE):
self.cleanup_tx(tx, account)
return fault_to_http_response(e)
except InsufficientCoinsError as e:
self.logger.debug(Errors.INSUFFICIENT_COINS_MESSAGE)
self.logger.debug("utxos remaining: %s", account.get_utxos())
return fault_to_http_response(
Fault(Errors.INSUFFICIENT_COINS_CODE,
Errors.INSUFFICIENT_COINS_MESSAGE))
except Exception as e:
if tx and tx.is_complete():
self.cleanup_tx(tx, account)
return fault_to_http_response(
Fault(code=Errors.GENERIC_INTERNAL_SERVER_ERROR,
message=str(e)))
def raise_for_rawtx_size(self, rawtx):
if (len(rawtx) / 2) > 99000:
fault = Fault(Errors.DATA_TOO_BIG_CODE,
Errors.DATA_TOO_BIG_MESSAGE)
raise fault
async def get_body_vars(self, request) -> Dict:
try:
return await decode_request_body(request)
except JSONDecodeError as e:
message = "JSONDecodeError " + str(e)
raise Fault(Errors.JSON_DECODE_ERROR_CODE, message)
def _fake_remove_transaction_raise_fault(tx_hash: bytes, wallet: AbstractAccount):
raise Fault(Errors.DISABLED_FEATURE_CODE, Errors.DISABLED_FEATURE_MESSAGE)
def _fake_create_tx_helper_raise_exception(self, request) -> Tuple[Any, set]:
raise Fault(Errors.INSUFFICIENT_COINS_CODE, Errors.INSUFFICIENT_COINS_MESSAGE)
def raise_for_type_okay(self, vars):
for vname in vars:
if vars.get(vname, None):
if not isinstance(vars.get(vname), ARGTYPES.get(vname)):
message = f"{vars.get(vname)} must be of type: '{ARGTYPES.get(vname)}'"
raise Fault(Errors.GENERIC_BAD_REQUEST_CODE, message)
