Class: Fluent::TextFormatter::SprintfFormatter

Inherits:
Formatter
  • Object
show all
Includes:
Configurable, HandleTagAndTimeMixin
Defined in:
lib/fluent/plugin/formatter_sprintf.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SprintfFormatter

Returns a new instance of SprintfFormatter.



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# File 'lib/fluent/plugin/formatter_sprintf.rb', line 13

def initialize
  super
end

Instance Method Details

#configure(conf) ⇒ Object 



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# File 'lib/fluent/plugin/formatter_sprintf.rb', line 17

def configure(conf)
  super
  @time_format = @time_format || '%Y-%m-%d %H:%M:%S'
  r = /\$\{([^}]+)\}/
  @keys = @sprintf_format.scan(r).map{ |key| key.first }
  @sprintf_format = @sprintf_format.gsub(/\$\{([^}]+)\}/, '%s')
  if @sprintf_blank_record_format
    @sprintf_blank_record_keys = @sprintf_blank_record_format.scan(r).map{ |key| key.first }
    @sprintf_blank_record_format = @sprintf_blank_record_format.gsub(/\$\{([^}]+)\}/, '%s')
  end

  begin
    @sprintf_format % @keys
  rescue ArgumentError => e
    raise Fluent::ConfigError, "formatter_sprintf: @sprintf_format is can't include '%'"
  end
end

#format(tag, time, record) ⇒ Object 



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# File 'lib/fluent/plugin/formatter_sprintf.rb', line 35

def format(tag, time, record)
  if record.empty? && @sprintf_blank_record_format
    return @sprintf_blank_record_format % get_values(@sprintf_blank_record_keys, tag, time, record)
  end
  @sprintf_format % get_values(@keys, tag, time, record)
end

#get_values(keys, tag, time, record) ⇒ Object 



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# File 'lib/fluent/plugin/formatter_sprintf.rb', line 42

def get_values(keys, tag, time, record)
  keys.map{ |key|
    if key == 'tag'
      tag
    elsif key == 'time'
      Time.at(time).strftime(@time_format)
    else
      (record[key].nil? || record[key].empty?) ? @sprintf_blank_string : record[key]
    end
  }
end