django logging: cannot create logs per day

Instead, use logging.TimedRotatingFileHandler, which adds the timestamp for you automatically, like this:

LOGGING = {
   #...
   'handlers': {
      'file': {
         'level': 'INFO',
         'formatter': 'verbose',
         'filename': os.path.join(FOOBAR, 'foobar.log'),
         'class': 'logging.handlers.TimedRotatingFileHandler',
         'when': 'midnight',
         'interval': 1,
      },
   },
}

Suggestion : 2

Don't set the date there: it'll be evaluated at import time only.,Django logging: Cannot create logs per day,Instead, use logging.TimedRotatingFileHandler, which adds the timestamp for you automatically, like this:,TypeError: Cannot create a consistent method resolution in django

Instead, use logging.TimedRotatingFileHandler, which adds the timestamp for you automatically, like this:

LOGGING = {
   #...
   'handlers': {
      'file': {
         'level': 'INFO',
         'formatter': 'verbose',
         'filename': os.path.join(FOOBAR, 'foobar.log'),
         'class': 'logging.handlers.TimedRotatingFileHandler',
         'when': 'midnight',
         'interval': 1,
      },
   },
}

Suggestion : 3

A logger is the entry point into the logging system. Each logger is a named bucket to which messages can be written for processing.,Each message that is written to the logger is a Log Record. Each log record also has a log level indicating the severity of that specific message. A log record can also contain useful metadata that describes the event that is being logged. This can include details such as a stack trace or an error code.,Next we can add more fine-grained logging. Here’s an example of how to make the logging system print more messages from just the django named logger:,The handler is the engine that determines what happens to each message in a logger. It describes a particular logging behavior, such as writing a message to the screen, to a file, or to a network socket.

import os

LOGGING = {
   'version': 1,
   'disable_existing_loggers': False,
   'handlers': {
      'console': {
         'class': 'logging.StreamHandler',
      },
   },
   'root': {
      'handlers': ['console'],
      'level': 'WARNING',
   },
}

import os

LOGGING = {
   'version': 1,
   'disable_existing_loggers': False,
   'handlers': {
      'console': {
         'class': 'logging.StreamHandler',
      },
   },
   'root': {
      'handlers': ['console'],
      'level': 'WARNING',
   },
   'loggers': {
      'django': {
         'handlers': ['console'],
         'level': os.getenv('DJANGO_LOG_LEVEL', 'INFO'),
         'propagate': False,
      },
   },
}

LOGGING = {
   'version': 1,
   'disable_existing_loggers': False,
   'handlers': {
      'file': {
         'level': 'DEBUG',
         'class': 'logging.FileHandler',
         'filename': '/path/to/django/debug.log',
      },
   },
   'loggers': {
      'django': {
         'handlers': ['file'],
         'level': 'DEBUG',
         'propagate': True,
      },
   },
}

LOGGING = {
   'version': 1,
   'disable_existing_loggers': False,
   'formatters': {
      'verbose': {
         'format': '{levelname} {asctime} {module} {process:d} {thread:d} {message}',
         'style': '{',
      },
      'simple': {
         'format': '{levelname} {message}',
         'style': '{',
      },
   },
   'filters': {
      'special': {
         '()': 'project.logging.SpecialFilter',
         'foo': 'bar',
      },
      'require_debug_true': {
         '()': 'django.utils.log.RequireDebugTrue',
      },
   },
   'handlers': {
      'console': {
         'level': 'INFO',
         'filters': ['require_debug_true'],
         'class': 'logging.StreamHandler',
         'formatter': 'simple'
      },
      'mail_admins': {
         'level': 'ERROR',
         'class': 'django.utils.log.AdminEmailHandler',
         'filters': ['special']
      }
   },
   'loggers': {
      'django': {
         'handlers': ['console'],
         'propagate': True,
      },
      'django.request': {
         'handlers': ['mail_admins'],
         'level': 'ERROR',
         'propagate': False,
      },
      'myproject.custom': {
         'handlers': ['console', 'mail_admins'],
         'level': 'INFO',
         'filters': ['special']
      }
   }
}

LOGGING_CONFIG = None

import logging.config
logging.config.dictConfig(...)

Suggestion : 4

The Python logging library adds several types of metadata to provide valuable context around the log messages. This can help in diagnosing a problem or analyzing what’s happening inside the code while the application is running. For example, log levels define the severity level of log events, which can be used to segment logs so you get the most relevant log message at any specified time.,Specify proper log levels to lower the risks of deployment and ensure effective debugging. This helps prevent the flooding of log files with trivial information due to inappropriate settings.,Don’t make log messages reliant on the content of prior messages, since the previous messages may not display if they’re logged at different levels.,This article explains why developers need to use logging and how to implement it in Django applications. It also offers best practices to use for optimum setup and results.

import logging
logging.basicConfig(level = logging.INFO)
logger = logging.getLogger(__name__)

logger.info('Start reading database')
# read database here
records = {
   'john': 55,
   'tom': 66
}
logger.debug('Records: %s', records)
logger.info('Updating records ...')
# update records here
logger.info('Finish updating records')

INFO: __main__: Start reading database
INFO: __main__: Updating records...
   INFO: __main__: Finish updating records

import logging.config
import os
from django.utils.log
import DEFAULT_LOGGING

# Disable Django 's logging setup
LOGGING_CONFIG = None

LOGLEVEL = os.environ.get('LOGLEVEL', 'info').upper()

logging.config.dictConfig({
   'version': 1,
   'disable_existing_loggers': False,
   'formatters': {
      'default': {
         # exact format is not important,
         this is the minimum information 'format': '%(asctime)s %(name)-12s %(levelname)-8s %(message)s',
      },
      'django.server': DEFAULT_LOGGING['formatters']['django.server'],
   },
   'handlers': {
      # console logs to stderr 'console': {
         'class': 'logging.StreamHandler',
         'formatter': 'default',
      },
      'django.server': DEFAULT_LOGGING['handlers']['django.server'],
   },
   'loggers': {
      #
      default
      for all undefined Python modules '': {
         'level': 'WARNING',
         'handlers': ['console'],
      },
      # Our application code 'app': {
         'level': LOGLEVEL,
         'handlers': ['console'],
         # Avoid double logging because of root logger 'propagate': False,
      },
      # Default runserver request logging 'django.server': DEFAULT_LOGGING['loggers']['django.server'],
   },
})

Suggestion : 5

07/22/2022

The following section walks through an example of creating a custom log. The sample log being collected has a single entry on each line starting with a date and time and then comma-delimited fields for code, status, and message. Several sample entries are shown.

2019 - 08 - 27 01: 34: 36 207, Success, Client 05 a26a97 - 272 a - 4 bc9 - 8 f64 - 269 d154b0e39 connected
2019 - 08 - 27 01: 33: 33 208, Warning, Client ec53d95c - 1 c88 - 41 ae - 8174 - 92104212 de5d disconnected
2019 - 08 - 27 01: 35: 44 209, Success, Transaction 10 d65890 - b003 - 48 f8 - 9 cfc - 9 c74b51189c8 succeeded
2019 - 08 - 27 01: 38: 22 302, Error, Application could not connect to database
2019 - 08 - 27 01: 31: 34 303, Error, Application lost connection to database