Function make_chain

test/functional/test_framework/wallet.py:261–281

Build a transaction that spends parent_txid.vout[n] and produces one output with amount = parent_value with a fee deducted. Return tuple (CTransaction object, raw hex, nValue, scriptPubKey of the output created).

(node, address, privkeys, parent_txid, parent_value, n=0, parent_locking_script=None, fee=DEFAULT_FEE)

def make_chain(node, address, privkeys, parent_txid, parent_value, n=0, parent_locking_script=None, fee=DEFAULT_FEE):
    """Build a transaction that spends parent_txid.vout[n] and produces one output with
    amount = parent_value with a fee deducted.
    Return tuple (CTransaction object, raw hex, nValue, scriptPubKey of the output created).
    """
    inputs = [{"txid": parent_txid, "vout": n}]
    # ELEMENTS: add fee output
    my_value = parent_value - fee
    outputs = [{address : my_value}, {"fee": fee}]
    rawtx = node.createrawtransaction(inputs, outputs)
    tx = tx_from_hex(rawtx)
    prevtxs = [{
        "txid": parent_txid,
        "vout": n,
        "scriptPubKey": parent_locking_script,
        "amount": parent_value,
    }] if parent_locking_script else None
    signedtx = node.signrawtransactionwithkey(hexstring=rawtx, privkeys=privkeys, prevtxs=prevtxs)
    assert signedtx["complete"]
    tx = tx_from_hex(signedtx["hex"])
    return (tx, signedtx["hex"], my_value, tx.vout[0].scriptPubKey.hex())

def create_child_with_parents(node, address, privkeys, parents_tx, values, locking_scripts, fee=DEFAULT_FEE):
    """Creates a transaction that spends the first output of each parent in parents_tx."""