def find_vote_casts(provider: Provider, vote: Vote,
choice_index: int) -> Iterable[VoteCast]:
'''find and verify vote_casts on this vote_choice_address'''
vote_casts = provider.listtransactions(
vote.vote_choice_address[choice_index])
for tx in vote_casts:
raw_tx = provider.getrawtransaction(tx, 1)
sender = find_tx_sender(provider, raw_tx)
confirmations = raw_tx["confirmations"]
blocknum = provider.getblock(raw_tx["blockhash"])["height"]
yield VoteCast(vote, sender, blocknum, confirmations,
raw_tx["blocktime"])
def card_bundler(provider: Provider, deck: Deck, tx: dict) -> CardBundle:
'''each blockchain transaction can contain multiple cards,
wrapped in bundles. This method finds and returns those bundles.'''
return CardBundle(deck=deck,
blockhash=tx['blockhash'],
txid=tx['txid'],
timestamp=tx['time'],
blockseq=tx_serialization_order(provider,
tx["blockhash"],
tx["txid"]),
blocknum=provider.getblock(tx["blockhash"])["height"],
sender=find_tx_sender(provider, tx),
vouts=tx['vout'],
tx_confirmations=tx['confirmations'])
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 tx_serialization_order(provider: Provider, blockhash: str,
txid: str) -> int:
'''find index of this tx in the blockid'''
return provider.getblock(blockhash)["tx"].index(txid)
