class Ougai::Formatters::Bunyan

def call(severity, time, progname, data)
  dump({
    name: progname || @app_name,
    hostname: @hostname,
    pid: $$,
    level: to_level(severity),
    time: time,
    v: 0
  }.merge(data))
end

def dump(data)
  return data unless @jsonize
  data[:time] = data[:time].iso8601(3)
  str = JSON.generate(data)
  str << "\n" if @with_newline
  str
end

def initialize
  super
  @jsonize = true
  @with_newline = true
end

def to_level(severity)
  case severity
  when 'INFO'
    30
  when 'WARN'
    40
  when 'ERROR'
    50
  when 'FATAL'
    60
  when 'ANY'
    70
  else # DEBUG
    20
  end
end