# Hierarchical logging in yaml format.
[](https://coveralls.io/github/etuzon/pytohn-nrt-logging)
[](https://deepsource.io/gh/etuzon/python-nrt-logging/?ref=repository-badge)
Hierarchical logging help to group logs that are related to the same code flow.
Log style can be styled in Yaml format or in Line format.
### Examples:
#### Output in YAML style
```Python
from nrt_logging.logger import NrtLogger
from nrt_logging.logger_manager import logger_manager
from nrt_logging.logger_stream_handlers import ManualDepthEnum
NAME_1 = 'TEST1'
NAME_2 = 'TEST2'
class Child:
__logger: NrtLogger
def __init__(self):
self.__logger = logger_manager.get_logger(NAME_1)
def child_1(self):
self.__logger.info('Child 1')
self.child_2()
def child_2(self):
self.__logger.info('Child 2')
class Parent:
MSG_1 = 'MSG_1'
MSG_2 = 'MSG_2'
MSG_3 = 'MSG_3'
INCREASE_MSG = 'INCREASE_MSG'
DECREASE_MSG = 'DECREASE_MSG'
__logger: NrtLogger
__child: Child
def __init__(self):
self.__logger = logger_manager.get_logger(NAME_1)
self.__child = Child()
def a1(self):
self.__logger.warn(self.MSG_1)
self.__child.child_1()
def a2_manual(self):
self.__logger.info(self.MSG_2)
self.__logger.increase_depth()
self.__logger.info(self.INCREASE_MSG)
self.__logger.decrease_depth()
self.__logger.info(self.DECREASE_MSG)
self.__logger.error(self.MSG_1)
self.a1()
def a3_manual(self):
self.__logger.info(self.MSG_2)
self.__logger.increase_depth()
self.__logger.info(self.INCREASE_MSG)
self.__logger.decrease_depth()
self.__logger.info(self.DECREASE_MSG)
self.__logger.error(self.MSG_3)
def a4_manual(self):
self.__logger.info(self.MSG_1)
self.__logger.info(self.INCREASE_MSG, ManualDepthEnum.INCREASE)
self.__logger.info(self.DECREASE_MSG, ManualDepthEnum.DECREASE)
self.__logger.error(self.MSG_2)
```
```Python
from examples.demo_classes.demo_classes import NAME_1, Parent
from nrt_logging.logger_manager import logger_manager
from nrt_logging.logger_stream_handlers import \
ConsoleStreamHandler, LogStyleEnum
def logging_style(log_style: LogStyleEnum):
sh = ConsoleStreamHandler()
sh.style = log_style
logger = logger_manager.get_logger(NAME_1)
logger.add_stream_handler(sh)
p = Parent()
p.a1()
def logging_line_style():
logging_style(LogStyleEnum.LINE)
def logging_yaml_style():
logging_style(LogStyleEnum.YAML)
logging_yaml_style()
```
Output
```YAML
---
date: 2022-10-31 17:59:04.653084
log_level: WARN
path: demo_classes.py.Parent
method: a1
line_number: 38
message: MSG_1
children:
- date: 2022-10-31 17:59:04.655071
log_level: INFO
path: demo_classes.py.Child
method: child_1
line_number: 16
message: Child 1
children:
- date: 2022-10-31 17:59:04.656137
log_level: INFO
path: demo_classes.py.Child
method: child_2
line_number: 20
message: Child 2
```
#### Output in LINE style
```YAML
- log: 2022-10-31 18:16:54.033735 [WARN] [demo_classes.py.Parent.a1:38] MSG_1
children:
- log: 2022-10-31 18:16:54.034660 [INFO] [demo_classes.py.Child.child_1:16] Child 1
children:
- log: 2022-10-31 18:16:54.036723 [INFO] [demo_classes.py.Child.child_2:20] Child 2
```
```Python
from nrt_logging.log_level import LogLevelEnum
from nrt_logging.logger_manager import logger_manager
from nrt_logging.logger_stream_handlers import \
ConsoleStreamHandler, LogStyleEnum
sh = ConsoleStreamHandler()
sh.log_level = LogLevelEnum.TRACE
sh.style = LogStyleEnum.LINE
logger = logger_manager.get_logger('NAME_1')
logger.add_stream_handler(sh)
logger.info('main level log')
logger.increase_depth()
logger.info('child 1')
logger.increase_depth()
logger.info('child 1_1')
logger.decrease_depth()
logger.info('child 2')
logger.decrease_depth()
logger.info('continue main level')
```
Output
```YAML
- log: 2022-10-31 18:18:34.520544 [INFO] [manual_hierarchy_line_logging_1.py.<module>:13] main level log
children:
- log: 2022-10-31 18:18:34.522606 [INFO] [manual_hierarchy_line_logging_1.py.<module>:15] child 1
children:
- log: 2022-10-31 18:18:34.523784 [INFO] [manual_hierarchy_line_logging_1.py.<module>:17] child 1_1
- log: 2022-10-31 18:18:34.524810 [INFO] [manual_hierarchy_line_logging_1.py.<module>:19] child 2
- log: 2022-10-31 18:18:34.525864 [INFO] [manual_hierarchy_line_logging_1.py.<module>:21] continue main level
```
### Config file
log_manager config file in YAML style.<br>
Configure loggers and stream handlers.
parameters are inherited. Parameters that are deeper in YAML file will be taken.
```YAML
log_level: WARN
date_format: '%Y-%m-%d %H:%M:%S'
loggers:
- name: TEST1
style: yaml
log_line_template: '[$log_level$] <$date$> $message$'
stream_handlers:
- type: console
style: line
- type: file
file_path: logs/log_test_1.txt
log_level: DEBUG
style: line
date_format: '%Y'
log_line_template: 'Test1 $date$ $message$'
- name: TEST2
style: yaml
stream_handlers:
- type: file
file_path: logs/log_test_2.txt
log_level: ERROR
date_format: '%Y'
log_yaml_elements:
['log_level', 'date', 'message']
```
```Python
from nrt_logging.logger_manager import logger_manager
CONFIG_FILE_PATH = './config/config1.yaml'
logger_manager.set_config(file_path=CONFIG_FILE_PATH)
```
Wiki: https://github.com/etuzon/nrt-logging/wiki
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"description": "# Hierarchical logging in yaml format.\r\n\r\n\r\n\r\n\r\n\r\n\r\n[](https://coveralls.io/github/etuzon/pytohn-nrt-logging)\r\n\r\n\r\n[](https://deepsource.io/gh/etuzon/python-nrt-logging/?ref=repository-badge)\r\n\r\nHierarchical logging help to group logs that are related to the same code flow.\r\n\r\nLog style can be styled in Yaml format or in Line format.\r\n\r\n### Examples:\r\n\r\n#### Output in YAML style\r\n\r\n```Python\r\nfrom nrt_logging.logger import NrtLogger\r\nfrom nrt_logging.logger_manager import logger_manager\r\nfrom nrt_logging.logger_stream_handlers import ManualDepthEnum\r\n\r\nNAME_1 = 'TEST1'\r\nNAME_2 = 'TEST2'\r\n\r\n\r\nclass Child:\r\n __logger: NrtLogger\r\n\r\n def __init__(self):\r\n self.__logger = logger_manager.get_logger(NAME_1)\r\n\r\n def child_1(self):\r\n self.__logger.info('Child 1')\r\n self.child_2()\r\n\r\n def child_2(self):\r\n self.__logger.info('Child 2')\r\n\r\n\r\nclass Parent:\r\n MSG_1 = 'MSG_1'\r\n MSG_2 = 'MSG_2'\r\n MSG_3 = 'MSG_3'\r\n INCREASE_MSG = 'INCREASE_MSG'\r\n DECREASE_MSG = 'DECREASE_MSG'\r\n\r\n __logger: NrtLogger\r\n __child: Child\r\n\r\n def __init__(self):\r\n self.__logger = logger_manager.get_logger(NAME_1)\r\n self.__child = Child()\r\n\r\n def a1(self):\r\n self.__logger.warn(self.MSG_1)\r\n self.__child.child_1()\r\n\r\n def a2_manual(self):\r\n self.__logger.info(self.MSG_2)\r\n self.__logger.increase_depth()\r\n self.__logger.info(self.INCREASE_MSG)\r\n self.__logger.decrease_depth()\r\n self.__logger.info(self.DECREASE_MSG)\r\n self.__logger.error(self.MSG_1)\r\n self.a1()\r\n\r\n def a3_manual(self):\r\n self.__logger.info(self.MSG_2)\r\n self.__logger.increase_depth()\r\n self.__logger.info(self.INCREASE_MSG)\r\n self.__logger.decrease_depth()\r\n self.__logger.info(self.DECREASE_MSG)\r\n self.__logger.error(self.MSG_3)\r\n\r\n def a4_manual(self):\r\n self.__logger.info(self.MSG_1)\r\n self.__logger.info(self.INCREASE_MSG, ManualDepthEnum.INCREASE)\r\n self.__logger.info(self.DECREASE_MSG, ManualDepthEnum.DECREASE)\r\n self.__logger.error(self.MSG_2)\r\n```\r\n\r\n```Python\r\nfrom examples.demo_classes.demo_classes import NAME_1, Parent\r\nfrom nrt_logging.logger_manager import logger_manager\r\nfrom nrt_logging.logger_stream_handlers import \\\r\n ConsoleStreamHandler, LogStyleEnum\r\n\r\n\r\ndef logging_style(log_style: LogStyleEnum):\r\n sh = ConsoleStreamHandler()\r\n sh.style = log_style\r\n logger = logger_manager.get_logger(NAME_1)\r\n logger.add_stream_handler(sh)\r\n p = Parent()\r\n p.a1()\r\n\r\n\r\ndef logging_line_style():\r\n logging_style(LogStyleEnum.LINE)\r\n\r\n\r\ndef logging_yaml_style():\r\n logging_style(LogStyleEnum.YAML)\r\n\r\n\r\nlogging_yaml_style()\r\n```\r\n\r\nOutput\r\n```YAML\r\n---\r\ndate: 2022-10-31 17:59:04.653084\r\nlog_level: WARN\r\npath: demo_classes.py.Parent\r\nmethod: a1\r\nline_number: 38\r\nmessage: MSG_1\r\nchildren:\r\n - date: 2022-10-31 17:59:04.655071\r\n log_level: INFO\r\n path: demo_classes.py.Child\r\n method: child_1\r\n line_number: 16\r\n message: Child 1\r\n children:\r\n - date: 2022-10-31 17:59:04.656137\r\n log_level: INFO\r\n path: demo_classes.py.Child\r\n method: child_2\r\n line_number: 20\r\n message: Child 2\r\n```\r\n\r\n#### Output in LINE style\r\n\r\n```YAML\r\n- log: 2022-10-31 18:16:54.033735 [WARN] [demo_classes.py.Parent.a1:38] MSG_1\r\n children:\r\n - log: 2022-10-31 18:16:54.034660 [INFO] [demo_classes.py.Child.child_1:16] Child 1\r\n children:\r\n - log: 2022-10-31 18:16:54.036723 [INFO] [demo_classes.py.Child.child_2:20] Child 2\r\n```\r\n\r\n```Python\r\nfrom nrt_logging.log_level import LogLevelEnum\r\nfrom nrt_logging.logger_manager import logger_manager\r\nfrom nrt_logging.logger_stream_handlers import \\\r\n ConsoleStreamHandler, LogStyleEnum\r\n\r\n\r\nsh = ConsoleStreamHandler()\r\nsh.log_level = LogLevelEnum.TRACE\r\nsh.style = LogStyleEnum.LINE\r\nlogger = logger_manager.get_logger('NAME_1')\r\nlogger.add_stream_handler(sh)\r\n\r\nlogger.info('main level log')\r\nlogger.increase_depth()\r\nlogger.info('child 1')\r\nlogger.increase_depth()\r\nlogger.info('child 1_1')\r\nlogger.decrease_depth()\r\nlogger.info('child 2')\r\nlogger.decrease_depth()\r\nlogger.info('continue main level')\r\n```\r\n\r\nOutput\r\n```YAML\r\n- log: 2022-10-31 18:18:34.520544 [INFO] [manual_hierarchy_line_logging_1.py.<module>:13] main level log\r\n children:\r\n - log: 2022-10-31 18:18:34.522606 [INFO] [manual_hierarchy_line_logging_1.py.<module>:15] child 1\r\n children:\r\n - log: 2022-10-31 18:18:34.523784 [INFO] [manual_hierarchy_line_logging_1.py.<module>:17] child 1_1\r\n- log: 2022-10-31 18:18:34.524810 [INFO] [manual_hierarchy_line_logging_1.py.<module>:19] child 2\r\n- log: 2022-10-31 18:18:34.525864 [INFO] [manual_hierarchy_line_logging_1.py.<module>:21] continue main level\r\n```\r\n\r\n### Config file\r\n\r\nlog_manager config file in YAML style.<br>\r\nConfigure loggers and stream handlers.\r\n\r\nparameters are inherited. Parameters that are deeper in YAML file will be taken.\r\n\r\n```YAML\r\nlog_level: WARN\r\ndate_format: '%Y-%m-%d %H:%M:%S'\r\nloggers:\r\n - name: TEST1\r\n style: yaml\r\n log_line_template: '[$log_level$] <$date$> $message$'\r\n stream_handlers:\r\n - type: console\r\n style: line\r\n - type: file\r\n file_path: logs/log_test_1.txt\r\n log_level: DEBUG\r\n style: line\r\n date_format: '%Y'\r\n log_line_template: 'Test1 $date$ $message$'\r\n - name: TEST2\r\n style: yaml\r\n stream_handlers:\r\n - type: file\r\n file_path: logs/log_test_2.txt\r\n log_level: ERROR\r\n date_format: '%Y'\r\n log_yaml_elements:\r\n ['log_level', 'date', 'message']\r\n```\r\n\r\n```Python\r\nfrom nrt_logging.logger_manager import logger_manager\r\n\r\n\r\nCONFIG_FILE_PATH = './config/config1.yaml'\r\n\r\nlogger_manager.set_config(file_path=CONFIG_FILE_PATH)\r\n```\r\n\r\nWiki: https://github.com/etuzon/nrt-logging/wiki\r\n\r\n",
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