Coverage for /pythoncovmergedfiles/medio/medio/src/airflow/build/lib/airflow/serialization/serializers/bignum.py: 36%

1# 

2# Licensed to the Apache Software Foundation (ASF) under one 

3# or more contributor license agreements. See the NOTICE file 

4# distributed with this work for additional information 

5# regarding copyright ownership. The ASF licenses this file 

6# to you under the Apache License, Version 2.0 (the 

7# "License"); you may not use this file except in compliance 

8# with the License. You may obtain a copy of the License at 

9# 

10# http://www.apache.org/licenses/LICENSE-2.0 

11# 

12# Unless required by applicable law or agreed to in writing, 

13# software distributed under the License is distributed on an 

14# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 

15# KIND, either express or implied. See the License for the 

16# specific language governing permissions and limitations 

17# under the License. 

18from __future__ import annotations 

19 

20from typing import TYPE_CHECKING 

21 

22from airflow.utils.module_loading import qualname 

23 

24if TYPE_CHECKING: 

25 import decimal 

26 

27 from airflow.serialization.serde import U 

28 

29 

30serializers = ["decimal.Decimal"] 

31deserializers = serializers 

32 

33__version__ = 1 

34 

35 

36def serialize(o: object) -> tuple[U, str, int, bool]: 

37 from decimal import Decimal 

38 

39 if not isinstance(o, Decimal): 

40 return "", "", 0, False 

41 name = qualname(o) 

42 _, _, exponent = o.as_tuple() 

43 if isinstance(exponent, int) and exponent >= 0: # No digits after the decimal point. 

44 return int(o), name, __version__, True 

45 # Technically lossy due to floating point errors, but the best we 

46 # can do without implementing a custom encode function. 

47 return float(o), name, __version__, True 

48 

49 

50def deserialize(classname: str, version: int, data: object) -> decimal.Decimal: 

51 from decimal import Decimal 

52 

53 if version > __version__: 

54 raise TypeError(f"serialized {version} of {classname} > {__version__}") 

55 

56 if classname != qualname(Decimal): 

57 raise TypeError(f"{classname} != {qualname(Decimal)}") 

58 

59 return Decimal(str(data))