initialize_logger() — Rails::Initializer

initialize_logger()

If the RAILS_DEFAULT_LOGGER constant is already set, this initialization routine does nothing. If the constant is not set, and Configuration#logger is not nil, this also does nothing. Otherwise, a new logger instance is created at Configuration#log_path, with a default log level of Configuration#log_level.

If the log could not be created, the log will be set to output to STDERR, with a log level of WARN.

Source

# File railties/lib/initializer.rb, line 480
    def initialize_logger
      # if the environment has explicitly defined a logger, use it
      return if Rails.logger

      unless logger = configuration.logger
        begin
          logger = ActiveSupport::BufferedLogger.new(configuration.log_path)
          logger.level = ActiveSupport::BufferedLogger.const_get(configuration.log_level.to_s.upcase)
          if configuration.environment == "production"
            logger.auto_flushing = false
          end
        rescue StandardError => e
          logger = ActiveSupport::BufferedLogger.new(STDERR)
          logger.level = ActiveSupport::BufferedLogger::WARN
          logger.warn(
            "Rails Error: Unable to access log file. Please ensure that #{configuration.log_path} exists and is chmod 0666. " +
            "The log level has been raised to WARN and the output directed to STDERR until the problem is fixed."
          )
        end
      end

      silence_warnings { Object.const_set "RAILS_DEFAULT_LOGGER", logger }
    end

Defined in railties/lib/initializer.rb line 480 · View on GitHub · Improve this page · Find usages on GitHub

Defined in Rails::Initializer

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