Class: Yell::Logger

Inherits:
Object
  • Object
show all
Includes:
Helpers::Adapter, Helpers::Base, Helpers::Formatter, Helpers::Level, Helpers::Silencer, Helpers::Tracer
Defined in:
lib/yell/logger.rb

Overview

The Yell::Logger is your entrypoint. Anything onwards is derived from here.

A Yell::Logger instance holds all your adapters and sends the log events to them if applicable. There are multiple ways of how to create a new logger.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helpers::Silencer

#silence, #silencer

Methods included from Helpers::Tracer

#trace, #trace=

Methods included from Helpers::Adapter

#adapter, #adapters

Methods included from Helpers::Formatter

#formatter, #formatter=

Methods included from Helpers::Level

#level, #level=

Constructor Details

#initialize(*args, &block) ⇒ Logger

Initialize a new Logger

Examples:

A standard file logger

Yell::Logger.new 'development.log'

A standard datefile logger

Yell::Logger.new :datefile
Yell::Logger.new :datefile, 'development.log'

Setting the log level

Yell::Logger.new :level => :warn

Yell::Logger.new do |l|
  l.level = :warn
end

Combined settings

Yell::Logger.new 'development.log', :level => :warn

Yell::Logger.new :datefile, 'development.log' do |l|
  l.level = :info
end


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# File 'lib/yell/logger.rb', line 44

def initialize( *args, &block )
  # extract options
  @options = args.last.is_a?(Hash) ? args.pop : {}

  # check if filename was given as argument and put it into the @options
  if [String, Pathname].include?(args.last.class)
    @options[:filename] = args.pop unless @options[:filename]
  end

  reset!

  # FIXME: :format is deprecated in future versions --R
  self.formatter = Yell.__fetch__(@options, :format, :formatter)
  self.level = Yell.__fetch__(@options, :level, :default => 0)
  self.name = Yell.__fetch__(@options, :name)
  self.trace = Yell.__fetch__(@options, :trace, :default => :error)

  # silencer
  self.silence(*Yell.__fetch__(@options, :silence, :default => []))

  # adapters may be passed in the options
  extract!(*Yell.__fetch__(@options, :adapters, :default => []))

  # extract adapter
  self.adapter(args.pop) if args.any?

  # eval the given block
  block.arity > 0 ? block.call(self) : instance_eval(&block) if block_given?

  # default adapter when none defined
  self.adapter(:file) if adapters.empty?
end

Instance Attribute Details

#name ⇒ Object

The name of the logger instance



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# File 'lib/yell/logger.rb', line 20

def name
  @name
end

Instance Method Details

#add(options, *messages, &block) ⇒ Object

Somewhat backwards compatible method (not fully though)



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# File 'lib/yell/logger.rb', line 90

def add( options, *messages, &block )
  return false unless level.at?(options)

  messages = silencer.call(*messages)
  return false if messages.empty?

  event = Yell::Event.new(self, options, *messages, &block)
  write(event)
end

#close ⇒ Object 



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# File 'lib/yell/logger.rb', line 126

def close
  adapters.close
end

#inspect ⇒ Object

Get a pretty string representation of the logger.



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# File 'lib/yell/logger.rb', line 120

def inspect
  inspection = inspectables.map { |m| "#{m}: #{send(m).inspect}" }
  "#<#{self.class.name} #{inspection * ', '}>"
end

#write(event) ⇒ Object 



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# File 'lib/yell/logger.rb', line 131

def write( event )
  adapters.write(event)
end