def build_tx_from_skeleton(tx_skeleton,
txos_storage,
block_height,
historical=False,
non_context=False):
'''
By given tx_skeleton and txos_storage return transaction.
If transaction is invalid or any input/output isn't available exception will be raised.
Optionally, if `historical` is True we will check output_indexes both in mempool and spent outputs.
'''
tx = Transaction(txos_storage=txos_storage)
for _i in tx_skeleton.input_indexes:
tx.inputs.append(txos_storage.confirmed[_i])
for _o in tx_skeleton.output_indexes:
if historical:
try:
tx.outputs.append(txos_storage.confirmed.find(_o))
except:
tx.outputs.append(txos_storage.mempool[_o])
else:
tx.outputs.append(txos_storage.mempool[_o])
tx.additional_excesses = tx_skeleton.additional_excesses.copy()
tx.combined_excesses = tx_skeleton.combined_excesses.copy()
if historical or non_context:
assert tx.non_context_verify(block_height=block_height)
else:
assert tx.verify(block_height=block_height)
return tx
def build_tx_from_skeleton(tx_skeleton,
txos_storage,
excesses_storage,
block_height,
block_version,
rtx,
historical=False,
non_context=False):
'''
By given tx_skeleton and txos_storage return transaction.
If transaction is invalid or any input/output isn't available exception will be raised.
Optionally, if `historical` is True we will check output_indexes both in mempool and spent outputs.
'''
tx = Transaction(txos_storage=txos_storage,
excesses_storage=excesses_storage)
for _i in tx_skeleton.input_indexes:
if historical or non_context:
tx.inputs.append(txos_storage.confirmed.find(_i, rtx=rtx))
else:
tx.inputs.append(txos_storage.confirmed.get(_i, rtx=rtx))
for _o in tx_skeleton.output_indexes:
if historical or non_context:
# About non_context: if we are on one branch and build block from another one
# and this block contain output which is already commited on our branch (tx is
# confirmed on both branches) we should get txo from confirmed storage
try:
tx.outputs.append(txos_storage.confirmed.find(_o, rtx=rtx))
except:
tx.outputs.append(txos_storage.mempool[_o])
else:
tx.outputs.append(txos_storage.mempool[_o])
tx.additional_excesses = tx_skeleton.additional_excesses.copy()
tx.updated_excesses = tx_skeleton.updated_excesses.copy()
tx.mixer_offset = tx_skeleton.mixer_offset
if historical or non_context:
assert tx.non_context_verify(block_height=block_height)
else:
assert tx.verify(block_height=block_height,
block_version=block_version,
rtx=rtx)
return tx