tags: #public

• Logging is configured as part of the general Django setup() function.
• There are mainly 4 components
  • Logger
    • Handles only messages that are greater than equal to it’s log level
      • There are 5 log levels in Python
        • DEBUG
        • INFO
        • WARNING
        • ERROR
        • CRITICAL
    • Can have multiple handlers for one logger
    • The name is usually __name__.
      • logger = logging.getLogger('project.interesting.stuff')
      • project.interesting is a parent of project.interesting.stuff
      • project is a parent of `project.interesting
      • So you can define handlers for child loggers in parent level.
        • Defining a logger on project will capture the logging calls in project.interesting and project.interesting.stuff
        • There is option to turn this off as well.
  • Handlers
    • Handlers decide what to do with the mesage
      • eg ; write message to screen, file, socket etc
      • Handlers also have log levels. So the message should atleast have the log level of the handler.
  • Filters
    • Provides additional control on what messages are passed from logger to handlers.
    • Can update the log level of the message if necessary/
    • Can be installed on loggers or handlers
  • Formatters
    • Every record is rendered at text at the end.
    • Formatter describes the exact format of the text.

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