def filter_unspent_outputs(self, outputs):
"""Remove outputs that have not been spent
Args:
outputs: list of TransactionLink
"""
links = [o.to_dict() for o in outputs]
txs = list(query.get_spending_transactions(self.connection, links))
spends = {TransactionLink.from_dict(input_['fulfills'])
for tx in txs
for input_ in tx['inputs']}
return [ff for ff in outputs if ff in spends]
def filter_unspent_outputs(self, outputs):
"""Remove outputs that have not been spent
Args:
outputs: list of TransactionLink
"""
links = [o.to_dict() for o in outputs]
txs = list(query.get_spending_transactions(self.connection, links))
spends = {TransactionLink.from_dict(input_['fulfills'])
for tx in txs
for input_ in tx['inputs']}
return [ff for ff in outputs if ff in spends]
def filter_spent_outputs(self, outputs):
"""Remove outputs that have been spent
Args:
outputs: list of TransactionLink
"""
links = [o.to_dict() for o in outputs]
res = query.get_spending_transactions(self.connection, links)
txs = [tx for _, tx in self.filter_valid_items(res)]
spends = {TransactionLink.from_dict(input_['fulfills'])
for tx in txs
for input_ in tx['inputs']}
return [ff for ff in outputs if ff not in spends]
def test_get_spending_transactions_multiple_inputs():
from bigchaindb.backend import connect, query
from bigchaindb.models import Transaction
from bigchaindb.common.crypto import generate_key_pair
conn = connect()
(alice_sk, alice_pk) = generate_key_pair()
(bob_sk, bob_pk) = generate_key_pair()
(carol_sk, carol_pk) = generate_key_pair()
out = [([alice_pk], 9)]
tx1 = Transaction.create([alice_pk], out).sign([alice_sk])
inputs1 = tx1.to_inputs()
tx2 = Transaction.transfer([inputs1[0]], [([alice_pk], 6), ([bob_pk], 3)],
tx1.id).sign([alice_sk])
inputs2 = tx2.to_inputs()
tx3 = Transaction.transfer([inputs2[0]], [([bob_pk], 3), ([carol_pk], 3)],
tx1.id).sign([alice_sk])
inputs3 = tx3.to_inputs()
tx4 = Transaction.transfer([inputs2[1], inputs3[0]], [([carol_pk], 6)],
tx1.id).sign([bob_sk])
txns = [deepcopy(tx.to_dict()) for tx in [tx1, tx2, tx3, tx4]]
conn.db.transactions.insert_many(txns)
links = [
({
'transaction_id': tx2.id,
'output_index': 0
}, 1, [tx3.id]),
({
'transaction_id': tx2.id,
'output_index': 1
}, 1, [tx4.id]),
({
'transaction_id': tx3.id,
'output_index': 0
}, 1, [tx4.id]),
({
'transaction_id': tx3.id,
'output_index': 1
}, 0, None),
]
for l, num, match in links:
txns = list(query.get_spending_transactions(conn, [l]))
assert len(txns) == num
if len(txns):
assert [tx['id'] for tx in txns] == match
def filter_spent_outputs(self, outputs):
"""Remove outputs that have been spent
Args:
outputs: list of TransactionLink
"""
links = [o.to_dict() for o in outputs]
res = query.get_spending_transactions(self.connection, links)
txs = [tx for _, tx in self.filter_valid_items(res)]
spends = {
TransactionLink.from_dict(input_['fulfills'])
for tx in txs for input_ in tx['inputs']
}
return [ff for ff in outputs if ff not in spends]
def test_get_spending_transactions(user_pk):
from bigchaindb.backend import connect, query
from bigchaindb.models import Block, Transaction
conn = connect()
out = [([user_pk], 1)]
tx1 = Transaction.create([user_pk], out * 3)
inputs = tx1.to_inputs()
tx2 = Transaction.transfer([inputs[0]], out, tx1.id)
tx3 = Transaction.transfer([inputs[1]], out, tx1.id)
tx4 = Transaction.transfer([inputs[2]], out, tx1.id)
block = Block([tx1, tx2, tx3, tx4])
conn.db.bigchain.insert_one(block.to_dict())
links = [inputs[0].fulfills.to_dict(), inputs[2].fulfills.to_dict()]
res = list(query.get_spending_transactions(conn, links))
# tx3 not a member because input 1 not asked for
assert res == [(block.id, tx2.to_dict()), (block.id, tx4.to_dict())]
def test_get_spending_transactions(user_pk, user_sk):
from bigchaindb.backend import connect, query
from bigchaindb.models import Transaction
conn = connect()
out = [([user_pk], 1)]
tx1 = Transaction.create([user_pk], out * 3)
tx1.sign([user_sk])
inputs = tx1.to_inputs()
tx2 = Transaction.transfer([inputs[0]], out, tx1.id)
tx3 = Transaction.transfer([inputs[1]], out, tx1.id)
tx4 = Transaction.transfer([inputs[2]], out, tx1.id)
txns = [tx.to_dict() for tx in [tx1, tx2, tx3, tx4]]
conn.db.transactions.insert_many(txns)
links = [inputs[0].fulfills.to_dict(), inputs[2].fulfills.to_dict()]
txns = list(query.get_spending_transactions(conn, links))
# tx3 not a member because input 1 not asked for
assert txns == [tx2.to_dict(), tx4.to_dict()]
def test_get_spending_transactions(user_pk, user_sk):
from bigchaindb.backend import connect, query
from bigchaindb.models import Transaction
conn = connect()
out = [([user_pk], 1)]
tx1 = Transaction.create([user_pk], out * 3)
tx1.sign([user_sk])
inputs = tx1.to_inputs()
tx2 = Transaction.transfer([inputs[0]], out, tx1.id).sign([user_sk])
tx3 = Transaction.transfer([inputs[1]], out, tx1.id).sign([user_sk])
tx4 = Transaction.transfer([inputs[2]], out, tx1.id).sign([user_sk])
txns = [deepcopy(tx.to_dict()) for tx in [tx1, tx2, tx3, tx4]]
conn.db.transactions.insert_many(txns)
links = [inputs[0].fulfills.to_dict(), inputs[2].fulfills.to_dict()]
txns = list(query.get_spending_transactions(conn, links))
# tx3 not a member because input 1 not asked for
assert txns == [tx2.to_dict(), tx4.to_dict()]
def test_get_spending_transactions_multiple_inputs():
from bigchaindb.backend import connect, query
from bigchaindb.models import Transaction
from bigchaindb.common.crypto import generate_key_pair
conn = connect()
(alice_sk, alice_pk) = generate_key_pair()
(bob_sk, bob_pk) = generate_key_pair()
(carol_sk, carol_pk) = generate_key_pair()
out = [([alice_pk], 9)]
tx1 = Transaction.create([alice_pk], out).sign([alice_sk])
inputs1 = tx1.to_inputs()
tx2 = Transaction.transfer([inputs1[0]],
[([alice_pk], 6), ([bob_pk], 3)],
tx1.id).sign([alice_sk])
inputs2 = tx2.to_inputs()
tx3 = Transaction.transfer([inputs2[0]],
[([bob_pk], 3), ([carol_pk], 3)],
tx1.id).sign([alice_sk])
inputs3 = tx3.to_inputs()
tx4 = Transaction.transfer([inputs2[1], inputs3[0]],
[([carol_pk], 6)],
tx1.id).sign([bob_sk])
txns = [deepcopy(tx.to_dict()) for tx in [tx1, tx2, tx3, tx4]]
conn.db.transactions.insert_many(txns)
links = [
({'transaction_id': tx2.id, 'output_index': 0}, 1, [tx3.id]),
({'transaction_id': tx2.id, 'output_index': 1}, 1, [tx4.id]),
({'transaction_id': tx3.id, 'output_index': 0}, 1, [tx4.id]),
({'transaction_id': tx3.id, 'output_index': 1}, 0, None),
]
for l, num, match in links:
txns = list(query.get_spending_transactions(conn, [l]))
assert len(txns) == num
if len(txns):
assert [tx['id'] for tx in txns] == match
