def validate()

in resdb_driver/validate.py [0:0]

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

    def validate(self, resdb, current_transactions=[]):
        """! Validate transaction spend
        @param resdb An instantiated resdb_driver.Resdb object.
        @return The transaction (Transaction) if the transaction is valid else it
                raises an exception describing the reason why the transaction is
                invalid.

        @exception ValidationError: If the transaction is invalid

        """
        input_conditions = []

        if self.operation == Transaction.CREATE:
            duplicates = any(
                txn for txn in current_transactions if txn.id == self.id)
            # TODO check if id already committed
            # if resdb.is_committed(self.id) or duplicates:
            #     raise DuplicateTransaction('transaction `{}` already exists'
            #                                .format(self.id))

            if not self.inputs_valid(input_conditions):
                raise InvalidSignature("Transaction signature is invalid.")

        elif self.operation == Transaction.TRANSFER:
            self.validate_transfer_inputs(resdb, current_transactions)

        return self