Class: JsonLogger

Inherits:
Logger
  • Object
show all
Defined in:
lib/json_logger.rb

Constant Summary collapse

@@factory_defaults = 
{}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ JsonLogger

Returns a new instance of JsonLogger.



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# File 'lib/json_logger.rb', line 27

def initialize(*args)
  super

  self.formatter = proc { |severity, datetime, progname, raw|
    out = {
      'time' => datetime.utc.iso8601(3),
      'level' => severity,
      'level_id' => @levels[severity]
    }

    if self.presets
      out.merge!(self.presets)
    end

    if raw.respond_to?(:to_hash)
      #TODO: raise error if raw has a key which overrides time, level, or level_id?
      out.merge!(raw.to_hash)
    elsif raw.respond_to?(:to_s)
      out['msg'] = raw.to_s
    end

    out['progname'] = progname if progname

    out.to_json + "\n"
  }

  @levels = {}
  Logger::SEV_LABEL.each_with_index {|label,idx| @levels[label] = idx}
end

Instance Attribute Details

#presets ⇒ Object

Returns the value of attribute presets.



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# File 'lib/json_logger.rb', line 25

def presets
  @presets
end

Class Method Details

.factory(options = {}) ⇒ Object

return a new JsonLogger

- file is set in settings
- progname and level can be set by options. (default level is in settings)



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# File 'lib/json_logger.rb', line 15

def self.factory(options={})
  device = options[:device] || @@factory_defaults[:device]
  inst = new(device)

  inst.level = options[:level] || @@factory_defaults[:level] || Logger::WARN
  inst.progname = options[:progname] || @@factory_defaults[:progname]
  inst.presets = options[:presets]
  inst
end

.factory_defaults=(options) ⇒ Object 



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# File 'lib/json_logger.rb', line 8

def self.factory_defaults=(options)
  @@factory_defaults = options
end