def deduct_fees(self, request, cons_time, ledger_id, seq_no, txn):
txn_type = request.operation[TXN_TYPE]
fees_key = "{}#{}".format(txn_type, seq_no)
if txn_type != XFER_PUBLIC and FeesAuthorizer.has_fees(request):
inputs, outputs, signatures = getattr(request, f.FEES.nm)
# This is correct since FEES is changed from config ledger whose
# transactions have no fees
fees = FeesAuthorizer.calculate_fees_from_req(
self.utxo_cache, request)
sigs = {i[ADDRESS]: s for i, s in zip(inputs, signatures)}
txn = {
OPERATION: {
TXN_TYPE: FEE_TXN,
INPUTS: inputs,
OUTPUTS: outputs,
REF: self.get_ref_for_txn_fees(ledger_id, seq_no),
FEES: fees,
},
f.SIGS.nm: sigs,
f.REQ_ID.nm: get_req_id(txn),
f.PROTOCOL_VERSION.nm: 2,
}
txn = reqToTxn(txn)
self.token_ledger.append_txns_metadata([txn], txn_time=cons_time)
_, txns = self.token_ledger.appendTxns(
[TokenReqHandler.transform_txn_for_ledger(txn)])
self.updateState(txns)
self.fee_txns_in_current_batch += 1
self.deducted_fees[fees_key] = fees
return txn
def apply_request(self, request: Request, batch_ts, prev_result):
txn_type = request.operation[TXN_TYPE]
seq_no = get_seq_no(prev_result)
cons_time = get_txn_time(prev_result)
if FeesAuthorizer.has_fees(request):
inputs, outputs, signatures = getattr(request, f.FEES.nm)
# This is correct since FEES is changed from config ledger whose
# transactions have no fees
fees = FeesAuthorizer.calculate_fees_from_req(
self.utxo_cache, request)
sigs = {i[ADDRESS]: s for i, s in zip(inputs, signatures)}
txn = {
OPERATION: {
TXN_TYPE: FEE_TXN,
INPUTS: inputs,
OUTPUTS: outputs,
REF: self._get_ref_for_txn_fees(seq_no),
FEES: fees,
},
f.SIGS.nm: sigs,
f.REQ_ID.nm: get_req_id(prev_result),
f.PROTOCOL_VERSION.nm: 2,
}
txn = reqToTxn(txn)
self.token_ledger.append_txns_metadata([txn], txn_time=cons_time)
_, txns = self.token_ledger.appendTxns([txn])
self.update_token_state(txn, request)
self._fees_tracker.fees_in_current_batch += 1
self._fees_tracker.add_deducted_fees(txn_type, seq_no, fees)
return None, None, prev_result