class Cabin::Outputs::EM::StdlibLogger

Wrap Ruby stdlib’s logger and make it EventMachine friendly. This allows you to output to a normal ruby logger with Cabin.

Public Class Methods

new(logger) click to toggle source
# File lib/cabin/outputs/em/stdlib-logger.rb, line 8
def initialize(logger)
  @logger_queue = EM::Queue.new
  @logger = logger
  # Consume log lines from a queue and send them with logger
  consumer
end

Public Instance Methods

<<(data) click to toggle source

Receive an event

# File lib/cabin/outputs/em/stdlib-logger.rb, line 30
def <<(data)
  line = Hash.new
  line[:method] = data[:level] || "info"
  line[:message] = "#{data[:message]} #{data.inspect}"
  if EM::reactor_running?
    # Push line onto queue for later sending
    @logger_queue.push(line)
  else
    # This will call @logger.info(data) or something similar
    @logger.send(line[:method], line[:message])
  end
end
consumer() click to toggle source
# File lib/cabin/outputs/em/stdlib-logger.rb, line 15
def consumer
  line_sender = Proc.new do |line|
    # This will call @logger.info(data) or something similar
    @logger.send(line[:method], line[:message])
    EM::next_tick do
      # Pop another line off the queue and do it again
      @logger_queue.pop(&line_sender)
    end
  end
  # Pop a line off the queue and send it with logger
  @logger_queue.pop(&line_sender)
end