Class: SemanticLogger::Formatters::Color

Inherits:
Default
  • Object
show all
Defined in:
lib/semantic_logger/formatters/color.rb

Defined Under Namespace

Classes: ColorMap

Constant Summary

Constants inherited from Base

Base::PRECISION

Instance Attribute Summary collapse

Attributes inherited from Default

#log, #logger

Attributes inherited from Base

#log_application, #log_host, #precision, #time_format

Instance Method Summary collapse

Methods inherited from Default

#message, #process_info

Methods inherited from Base

build_time_format, #time

Constructor Details

#initialize(ap: {multiline: false}, color_map: ColorMap.new, time_format: nil, log_host: false, log_application: false, precision: PRECISION) ⇒ Color

Adds color to the default log formatter

Example:

# Use a colorized output logger.
SemanticLogger.add_appender(io: $stdout, formatter: :color)

Example:

# Use a colorized output logger changing the color for info to yellow.
SemanticLogger.add_appender(io: $stdout, formatter: {color: {color_map: {info: SemanticLogger::AnsiColors::YELLOW}}})

Example:

# Override the Awesome Print options to output hashes over multiple lines:
SemanticLogger.add_appender(io: $stdout, formatter: {color: {ap: {multiline: true}}})

# Calling the appender added above:
SemanticLogger['Test'].info('hi', {a: 1, b: 2})
=> true
=> 2019-02-12 11:47:50.794339 I [35832:70112015269920] Test -- hi -- {
     :a => 1,
     :b => 2
   }

Parameters:

ap: [Hash]
  Any valid AwesomePrint option for rendering data.
  These options can also be changed be creating a `~/.aprc` file.
  See: https://github.com/michaeldv/awesome_print

  Note: The option :multiline is set to false if not supplied.
  Note: Has no effect if Awesome Print is not installed.

color_map: [Hash | SemanticLogger::Formatters::Color::ColorMap]
  ColorMaps each of the log levels to a color



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# File 'lib/semantic_logger/formatters/color.rb', line 73

def initialize(ap: {multiline: false},
               color_map: ColorMap.new,
               time_format: nil,
               log_host: false,
               log_application: false,
               precision: PRECISION)
  @ai_options = ap
  @color_map  = color_map.is_a?(ColorMap) ? color_map : ColorMap.new(color_map)
  super(time_format: time_format, log_host: log_host, log_application: log_application, precision: precision)
end

Instance Attribute Details

#color ⇒ Object

Returns the value of attribute color.



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# File 'lib/semantic_logger/formatters/color.rb', line 11

def color
  @color
end

#color_map ⇒ Object

Returns the value of attribute color_map.



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# File 'lib/semantic_logger/formatters/color.rb', line 11

def color_map
  @color_map
end

Instance Method Details

#call(log, logger) ⇒ Object 



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# File 'lib/semantic_logger/formatters/color.rb', line 130

def call(log, logger)
  self.color = color_map[log.level]
  super(log, logger)
end

#duration ⇒ Object 



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# File 'lib/semantic_logger/formatters/color.rb', line 102

def duration
  "(#{color_map.bold}#{log.duration_human}#{color_map.clear})" if log.duration
end

#exception ⇒ Object 



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# File 'lib/semantic_logger/formatters/color.rb', line 124

def exception
  return unless log.exception

  "-- Exception: #{color}#{log.exception.class}: #{log.exception.message}#{color_map.clear}\n#{log.backtrace_to_s}"
end

#level ⇒ Object 



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# File 'lib/semantic_logger/formatters/color.rb', line 84

def level
  "#{color}#{super}#{color_map.clear}"
end

#name ⇒ Object 



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# File 'lib/semantic_logger/formatters/color.rb', line 106

def name
  "#{color}#{super}#{color_map.clear}"
end

#named_tags ⇒ Object

Named Tags



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# File 'lib/semantic_logger/formatters/color.rb', line 93

def named_tags
  named_tags = log.named_tags
  return if named_tags.nil? || named_tags.empty?

  list = []
  named_tags.each_pair { |name, value| list << "#{color}#{name}: #{value}#{color_map.clear}" }
  "{#{list.join(', ')}}"
end

#payload ⇒ Object 



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# File 'lib/semantic_logger/formatters/color.rb', line 110

def payload
  return unless log.payload?

  if !defined?(AwesomePrint) || !log.payload.respond_to?(:ai)
    super
  else
    begin
      "-- #{log.payload.ai(@ai_options)}"
    rescue StandardError
      super
    end
  end
end

#tags ⇒ Object 



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# File 'lib/semantic_logger/formatters/color.rb', line 88

def tags
  "[#{color}#{log.tags.join("#{color_map.clear}] [#{color}")}#{color_map.clear}]" if log.tags && !log.tags.empty?
end