def find_card_bundles(provider: Provider, deck: Deck) -> Optional[Iterator]:
'''each blockchain transaction can contain multiple cards,
wrapped in bundles. This method finds and returns those bundles.'''
if isinstance(provider, RpcNode):
if deck.id is None:
raise Exception("deck.id required to listtransactions")
p2th_account = provider.getaccount(deck.p2th_address)
batch_data = [('getrawtransaction', [i["txid"], 1])
for i in provider.listtransactions(p2th_account)]
result = provider.batch(batch_data)
if result is not None:
raw_txns = [i['result'] for i in result if result]
else:
raise EmptyP2THDirectory({'error': 'No cards found on this deck.'})
else:
if deck.p2th_address is None:
raise Exception("deck.p2th_address required to listtransactions")
try:
raw_txns = (provider.getrawtransaction(i, 1)
for i in provider.listtransactions(deck.p2th_address))
except TypeError:
raise EmptyP2THDirectory({'error': 'No cards found on this deck.'})
return (card_bundler(provider, deck, i) for i in raw_txns)
def find_card_bundles(provider: Provider, deck: Deck) -> Optional[Iterator]:
'''each blockchain transaction can contain multiple cards,
wrapped in bundles. This method finds and returns those bundles.'''
if isinstance(provider, RpcNode):
if deck.id is None:
raise Exception("deck.id required to listtransactions")
batch_data = [('getrawtransaction', [i["txid"], 1]) for
i in provider.listtransactions(deck.id)]
result = provider.batch(batch_data)
if result is not None:
raw_txns = [i['result'] for i in result if result]
else:
raise EmptyP2THDirectory({'error': 'No cards found on this deck.'})
else:
if deck.p2th_address is None:
raise Exception("deck.p2th_address required to listtransactions")
try:
raw_txns = (provider.getrawtransaction(i, 1) for i in
provider.listtransactions(deck.p2th_address))
except TypeError:
raise EmptyP2THDirectory({'error': 'No cards found on this deck.'})
return (CardBundle(deck=deck,
blockhash=i['blockhash'],
txid=i['txid'],
timestamp=i['time'],
blockseq=tx_serialization_order(provider, i["blockhash"],
i["txid"]),
blocknum=provider.getblock(i["blockhash"])["height"],
sender=find_tx_sender(provider, i),
vouts=i['vout'],
tx_confirmations=i['confirmations']
) for i in raw_txns)
def get_card_transfers(provider: Provider, deck: Deck) -> Generator:
'''get all <deck> card transfers, if cards match the protocol'''
if isinstance(provider, RpcNode):
if deck.id is None:
raise Exception("deck.id required to listtransactions")
batch_data = [('getrawtransaction', [i["txid"], 1])
for i in provider.listtransactions(deck.id)]
result = provider.batch(batch_data)
if result is not None:
card_transfers = [i['result'] for i in result if result]
else:
if deck.p2th_address is None:
raise Exception("deck.p2th_address required to listtransactions")
if provider.listtransactions(deck.p2th_address):
card_transfers = (provider.getrawtransaction(
i, 1) for i in provider.listtransactions(deck.p2th_address))
else:
raise EmptyP2THDirectory({'error': 'No cards found on this deck.'})
def card_parser(args: Tuple[Provider, Deck, dict]) -> list:
'''this function wraps all the card transfer parsing'''
provider = args[0]
deck = args[1]
raw_tx = args[2]
try:
validate_card_transfer_p2th(deck, raw_tx) # validate P2TH first
card_metainfo = parse_card_transfer_metainfo(
read_tx_opreturn(raw_tx), deck.version)
vouts = raw_tx["vout"]
sender = find_tx_sender(provider, raw_tx)
try: # try to get block seq number
blockseq = tx_serialization_order(provider,
raw_tx["blockhash"],
raw_tx["txid"])
except KeyError:
blockseq = 0
try: # try to get block number of block when this tx was written
blocknum = provider.getblock(raw_tx["blockhash"])["height"]
except KeyError:
blocknum = 0
try: # try to get tx confirmation count
tx_confirmations = raw_tx["confirmations"]
except KeyError:
tx_confirmations = 0
cards = postprocess_card(card_metainfo, raw_tx, sender, vouts,
blockseq, blocknum, tx_confirmations,
deck)
cards = [CardTransfer(**card) for card in cards]
except (InvalidCardTransferP2TH, CardVersionMismatch,
CardNumberOfDecimalsMismatch, InvalidVoutOrder,
RecieverAmountMismatch, DecodeError, TypeError,
InvalidNulldataOutput) as e:
return []
return cards
with concurrent.futures.ThreadPoolExecutor(max_workers=2) as th:
for result in th.map(card_parser,
((provider, deck, i) for i in card_transfers)):
if result:
yield result
