Play a notifying sound every time a librato count metric is logged. Inspired by https://choir.io/

librato_metric_sound.rb

#!/usr/bin/env ruby

require 'librato/metrics'

POLL_TIME = 5
METRIC_NAME = 'production.rates-service'

def play_sound
  `mpg123 cashreg1.wav`
end

def get_metric metric_name
  Librato::Metrics.fetch(metric_name, count: 1, resolution: 1)["unassigned"].first["value"]
end

Librato::Metrics.authenticate('email', 'token')
count = get_metric(METRIC_NAME)
while true
  puts count
  delta = get_metric(METRIC_NAME) - count

  delta.times{ Thread.new { play_sound } ; sleep(POLL_TIME.to_f/delta) }

  count += delta
  sleep POLL_TIME
end