xdrlib.Error: value=-915689825 not in enum ClaimableBalanceIDType, when I try to claim the created balance

Question

so I'm trying to implement claimable_balances example using the python-sdk, I'm able to use append_create_claimable_balance_op and create a claimable balance from the sponsor's account.

but I don't know what the balance_id that is required for claiming the balance back for the claimant.

I tried using the id from create_claimable_balance_resp dictionary as balance_id, but that's when I started seeing this weird error.

Traceback (most recent call last):
  File "claimable_balance.py", line 45, in <module>
    claim_claimable_balance_te.sign(claimant_keypair)
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/base_transaction_envelope.py", line 55, in sign
    tx_hash = self.hash()
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/base_transaction_envelope.py", line 33, in hash
    return sha256(self.signature_base())
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/transaction_envelope.py", line 57, in signature_base
    tx_packer.pack_Transaction(tx.to_xdr_object())
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/transaction.py", line 101, in to_xdr_object
    operations = [operation.to_xdr_object() for operation in self.operations]
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/transaction.py", line 101, in <listcomp>
    operations = [operation.to_xdr_object() for operation in self.operations]
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/operation/operation.py", line 133, in to_xdr_object
    return Xdr.types.Operation(source_account, self._to_operation_body())
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/operation/claim_claimable_balance.py", line 37, in _to_operation_body
    balance_id = ClaimableBalanceID.from_xdr(base64.b64encode(balance_id_bytes))
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/xdr/StellarXDR_type.py", line 1904, in from_xdr
    return xdr_unpacked.unpack_ClaimableBalanceID()
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/xdr/StellarXDR_pack.py", line 3806, in unpack_ClaimableBalanceID
    data.type = self.unpack_ClaimableBalanceIDType()
  File "/home/greyhound/miniconda3/envs/gg/lib/python3.7/site-packages/stellar_sdk/xdr/StellarXDR_pack.py", line 3799, in unpack_ClaimableBalanceIDType
    raise XDRError('value=%s not in enum ClaimableBalanceIDType' % data)
xdrlib.Error: value=-915689825 not in enum ClaimableBalanceIDType

but in laboratory I'm able to see a claimableBalanceIdTypeV0 as iHe9OulZl9/eo+Z7tMZe+nHX3gSL6XhjR96qrUP7uHk= from TransactionResult XDR type which doesn't resemble anything like the balance_id shown in the github example. I tried using that too, it started throwing Invalid hex string or along those lines.

tl;dr. Please tell me what balance_id is and where I can find it to claim my balance back.

Environment: I'm testing it out in the horizon testnet only. The entire output and error is here as well.. python version: 3.7.9, stellar:

>>> import stellar_sdk
>>> stellar_sdk.__version__
'2.8.1'

Answer 1

def get_balance_id(create_claimable_balance_resp):

    effects_link = create_claimable_balance_resp["_links"]["effects"]["href"].split("{")[0]
    resp = requests.get(effects_link)
    content = json.loads(resp.content)
    balance_id = content["_embedded"]["records"][0]["balance_id"]
    return balance_id

worked for me. where create_claimable_balance_resp is the response given by the result of TransactionBuilder with append_create_claimable_balance_op, like this here.

In their docs it says

Either party could also check the /effects of the transaction, query /claimable_balances with different filters, etc. Note that while (1) may be unavailable in some SDKs as its just a helper,

Note: IDK how it will work for multiple claimants yet.