Module: Logging

Included in:
Grafana::Client
Defined in:
lib/grafana/logging.rb

Overview

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.configure_logger_for(classname) ⇒ Object 



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# File 'lib/grafana/logging.rb', line 21

def configure_logger_for( classname )

  log_level = ENV.fetch('LOG_LEVEL', 'INFO' )
  level = log_level.dup

  # DEBUG < INFO < WARN < ERROR < FATAL < UNKNOWN
  log_level = case level.upcase
    when 'DEBUG'
      Logger::DEBUG   # Low-level information for developers.
    when 'INFO'
      Logger::INFO    # Generic (useful) information about system operation.
    when 'WARN'
      Logger::WARN    # A warning.
    when 'ERROR'
      Logger::ERROR   # A handleable error condition.
    when 'FATAL'
      Logger::FATAL   # An unhandleable error that results in a program crash.
    else
      Logger::UNKNOWN  # An unknown message that should always be logged.
    end

  $stdout.sync           = true
  logger                 = Logger.new($stdout)
  logger.level           = log_level
  logger.datetime_format = "%Y-%m-%d %H:%M:%S %z"
  logger.formatter       = proc do |severity, datetime, progname, msg|
    "[#{datetime.strftime( logger.datetime_format )}] #{severity.ljust(5)}  #{msg}\n"
  end

  logger
end

.logger_for(classname) ⇒ Object 



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# File 'lib/grafana/logging.rb', line 17

def logger_for( classname )
  @loggers[classname] ||= configure_logger_for( classname )
end

Instance Method Details

#logger ⇒ Object 



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# File 'lib/grafana/logging.rb', line 8

def logger
  @logger ||= Logging.logger_for( self.class.name )
end