class SimpleJsonLogFormatter

Constants

VERSION

Attributes

opts[R]

Public Class Methods

new(opts={}) click to toggle source

@param [Hash] opts @option opts [String] time_key (default: time) @option opts [String] severity_key (default: severity) @option opts [String] progname_key (default: progname) @option opts [String] message_key (default: message) @option opts [String] datetime_format (default: %FT%T%:z)

# File lib/simple_json_log_formatter.rb, line 15
def initialize(opts={})
  @opts = opts.map {|k, v| [k.to_sym, v] }.to_h
  @opts[:time_key] = :time unless @opts.has_key?(:time_key)
  @opts[:severity_key] = :severity unless @opts.has_key?(:severity_key)
  @opts[:progname_key] = :progname unless @opts.has_key?(:progname_key)
  @opts[:message_key] ||= :message
  @opts[:datetime_format] = "%FT%T%:z" if !@opts.has_key?(:datetime_format) || @opts[:datetime_format].nil?
end

Public Instance Methods

call(severity, time, progname, msg) click to toggle source 
# File lib/simple_json_log_formatter.rb, line 24
def call(severity, time, progname, msg)
  event = {}
  event[@opts[:time_key]] = time.strftime(@opts[:datetime_format]) if @opts[:time_key]
  event[@opts[:severity_key]] = severity if @opts[:severity_key]
  event[@opts[:progname_key]] = progname if @opts[:progname_key]
  event[@opts[:message_key]] = format_message(msg)
  "#{event.to_json}\n"
end

Private Instance Methods

format_message(msg) click to toggle source 
# File lib/simple_json_log_formatter.rb, line 34
def format_message(msg)
  case msg
  when String
    if msg.start_with?("{") && msg.end_with?("}")
      (JSON.parse(msg) rescue nil) || msg
    else
      msg
    end
  when Hash
    msg
  when Exception
    exception = {}
    exception["message"] = msg.message
    exception["backtrace"] = msg.backtrace if msg.backtrace
    exception
  else
    msg.inspect
  end
end