def prepare_create_transaction()

in resdb_driver/offchain.py [0:0]

• 18 lines of code
• 9 McCabe index (conditional complexity)

def prepare_create_transaction(*, signers, recipients=None, asset=None, metadata=None):
    """! Prepares a ``"CREATE"`` transaction payload, ready to be
    fulfilled.

    @param signers (:obj:`list` | :obj:`tuple` | :obj:`str`): 
            One or more public keys representing 
            the issuer(s) of the asset being created.
    @param recipients (:obj:`list` | :obj:`tuple` | :obj:`str`, optional): 
            One or more public keys representing 
            the new recipients(s) of the asset being created. Defaults to ``None``.
    @param asset (:obj:`dict`, optional): The asset to be created. Defaults to ``None``.
    @param metadata (:obj:`dict`, optional): Metadata associated with the transaction. Defaults to ``None``.

    @return The prepared ``"CREATE"`` transaction.

    .. important::

        * If ``asset`` is set, it MUST be in the form of::

                {
                    'data': {
                        ...
                    }
                }

        * If ``recipients`` is not given, or evaluates to
          ``False``, it will be set equal to ``signers``::

            if not recipients:
                recipients = signers

    """
    if not isinstance(signers, (list, tuple)):
        signers = [signers]
    # NOTE: Needed for the time being. See
    # https://github.com/bigchaindb/bigchaindb/issues/797
    elif isinstance(signers, tuple):
        signers = list(signers)

    if not recipients:
        recipients = [(signers, 1)]
    elif not isinstance(recipients, (list, tuple)):
        recipients = [([recipients], 1)]
    # NOTE: Needed for the time being. See
    # https://github.com/bigchaindb/bigchaindb/issues/797
    elif isinstance(recipients, tuple):
        recipients = [(list(recipients), 1)]

    transaction = Transaction.create(
        signers,
        recipients,
        metadata=metadata,
        asset=asset["data"] if asset else None,
    )
    return transaction.to_dict()