Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/airflow/templates.py: 46%

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 

22import jinja2.nativetypes 

23import jinja2.sandbox 

24 

25if TYPE_CHECKING: 

26 import datetime 

27 

28 

29class _AirflowEnvironmentMixin: 

30 def __init__(self, **kwargs): 

31 super().__init__(**kwargs) 

32 

33 self.filters.update(FILTERS) 

34 

35 def is_safe_attribute(self, obj, attr, value): 

36 """ 

37 Allow access to ``_`` prefix vars (but not ``__``). 

38 

39 Unlike the stock SandboxedEnvironment, we allow access to "private" attributes (ones starting with 

40 ``_``) whilst still blocking internal or truly private attributes (``__`` prefixed ones). 

41 """ 

42 return not jinja2.sandbox.is_internal_attribute(obj, attr) 

43 

44 

45class NativeEnvironment(_AirflowEnvironmentMixin, jinja2.nativetypes.NativeEnvironment): 

46 """NativeEnvironment for Airflow task templates.""" 

47 

48 

49class SandboxedEnvironment(_AirflowEnvironmentMixin, jinja2.sandbox.SandboxedEnvironment): 

50 """SandboxedEnvironment for Airflow task templates.""" 

51 

52 

53def ds_filter(value: datetime.date | datetime.time | None) -> str | None: 

54 """Date filter.""" 

55 if value is None: 

56 return None 

57 return value.strftime("%Y-%m-%d") 

58 

59 

60def ds_nodash_filter(value: datetime.date | datetime.time | None) -> str | None: 

61 """Date filter without dashes.""" 

62 if value is None: 

63 return None 

64 return value.strftime("%Y%m%d") 

65 

66 

67def ts_filter(value: datetime.date | datetime.time | None) -> str | None: 

68 """Timestamp filter.""" 

69 if value is None: 

70 return None 

71 return value.isoformat() 

72 

73 

74def ts_nodash_filter(value: datetime.date | datetime.time | None) -> str | None: 

75 """Timestamp filter without dashes.""" 

76 if value is None: 

77 return None 

78 return value.strftime("%Y%m%dT%H%M%S") 

79 

80 

81def ts_nodash_with_tz_filter(value: datetime.date | datetime.time | None) -> str | None: 

82 """Timestamp filter with timezone.""" 

83 if value is None: 

84 return None 

85 return value.isoformat().replace("-", "").replace(":", "") 

86 

87 

88FILTERS = { 

89 "ds": ds_filter, 

90 "ds_nodash": ds_nodash_filter, 

91 "ts": ts_filter, 

92 "ts_nodash": ts_nodash_filter, 

93 "ts_nodash_with_tz": ts_nodash_with_tz_filter, 

94}