import base64
import binascii
from .operation import Operation
from ..xdr import Xdr
from ..xdr.StellarXDR_type import ClaimableBalanceID
[文档]class ClaimClaimableBalance(Operation):
"""The :class:`ClaimClaimableBalance` object, which represents a ClaimClaimableBalance
operation on Stellar's network.
Claims a ClaimableBalanceEntry and adds the amount of asset on the entry to the source account.
See `Claim Claimable Balance Documentation
<https://developers.stellar.org/docs/start/list-of-operations/#claim-claimable-balance>_`.
Threshold: Low
:param balance_id: The claimable balance id to be claimed.
:param source: The source account (defaults to transaction source).
"""
def __init__(self, balance_id: str, source: str = None,) -> None:
super().__init__(source)
self.balance_id: str = balance_id
@classmethod
def type_code(cls) -> int:
return Xdr.const.CLAIM_CLAIMABLE_BALANCE
def _to_operation_body(self) -> Xdr.nullclass:
body = Xdr.nullclass()
body.type = Xdr.const.CLAIM_CLAIMABLE_BALANCE
balance_id_bytes: bytes = binascii.unhexlify(self.balance_id)
balance_id = ClaimableBalanceID.from_xdr(base64.b64encode(balance_id_bytes))
claim_claimable_balance_op = Xdr.types.ClaimClaimableBalanceOp(
balanceID=balance_id
)
body.claimClaimableBalanceOp = claim_claimable_balance_op
return body
[文档] @classmethod
def from_xdr_object(
cls, operation_xdr_object: Xdr.types.Operation
) -> "ClaimClaimableBalance":
"""Creates a :class:`ClaimClaimableBalance` object from an XDR Operation
object.
"""
source = Operation.get_source_from_xdr_obj(operation_xdr_object)
balance_id = base64.b64decode(
operation_xdr_object.body.claimClaimableBalanceOp.to_xdr()
)
balance_id = binascii.hexlify(balance_id).decode()
op = cls(balance_id=balance_id, source=source)
op._source_muxed = Operation.get_source_muxed_from_xdr_obj(operation_xdr_object)
return op