Coverage for sources/ictruck/recipes/logging.py: 100%

1# vim: set filetype=python fileencoding=utf-8: 

2# -*- coding: utf-8 -*- 

3 

4#============================================================================# 

5# # 

6# Licensed under the Apache License, Version 2.0 (the "License"); # 

7# you may not use this file except in compliance with the License. # 

8# 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, software # 

13# distributed under the License is distributed on an "AS IS" BASIS, # 

14# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # 

15# See the License for the specific language governing permissions and # 

16# limitations under the License. # 

17# # 

18#============================================================================# 

19 

20 

21''' Recipes for integration with standard logging. ''' 

22 

23 

24 

25import logging as _logging 

26 

27from . import __ 

28 

29 

30_validate_arguments = ( 

31 __.validate_arguments( 

32 globalvars = globals( ), 

33 errorclass = __.exceptions.ArgumentClassInvalidity ) ) 

34 

35 

36InstallAdditionalAliasesArgument: __.typx.TypeAlias = __.typx.Annotated[ 

37 __.Absential[ __.cabc.Mapping[ str, str ] ], 

38 __.typx.Doc( 

39 ''' Mapping of builtins attribute names to flavors. ''' ), 

40] 

41 

42 

43@_validate_arguments 

44def install( 

45 alias: __.InstallAliasArgument = __.builtins_alias_default, 

46 additional_aliases: InstallAdditionalAliasesArgument = __.absent, 

47) -> __.Truck: 

48 ''' Produces truck and installs it into builtins with alias. 

49 

50 Replaces an existing truck, preserving global module configurations. 

51 

52 Library developers should call :py:func:`__.register_module` instead. 

53 ''' 

54 truck = produce_truck( ).install( alias = alias ) 

55 if __.is_absent( additional_aliases ): additional_aliases = { } 

56 for falias, flavor in additional_aliases.items( ): 

57 __.install_builtin_safely( 

58 falias, truck( flavor ), __.exceptions.AttributeNondisplacement ) 

59 return truck 

60 

61 

62@_validate_arguments 

63def produce_printer( mname: str, flavor: __.Flavor ) -> __.Printer: 

64 ''' Produces printer which maps flavors to logging levels. ''' 

65 logger = _logging.getLogger( mname ) 

66 level = ( 

67 getattr( _logging, flavor.upper( ) ) if isinstance( flavor, str ) 

68 else _logging.DEBUG ) 

69 return lambda x: logger.log( level, x ) 

70 

71 

72@_validate_arguments 

73def produce_truck( ) -> __.Truck: 

74 ''' Produces icecream truck which integrates with standard logging. ''' 

75 active_flavors = { None: frozenset( { 

76 'debug', 'info', 'warning', 'error', 'critical' } ) } 

77 flavors: __.immut.Dictionary[ __.Flavor, __.FlavorConfiguration ] = ( 

78 __.immut.Dictionary( 

79 { name: __.FlavorConfiguration( ) 

80 for name in active_flavors[ None ] } ) ) 

81 generalcfg = __.VehicleConfiguration( flavors = flavors ) 

82 nomargs = dict( 

83 active_flavors = active_flavors, 

84 generalcfg = generalcfg, 

85 printer_factory = produce_printer ) 

86 return __.Truck( **nomargs ) # pyright: ignore