Send sidekiq metrics to aws cloudwatch

aws-sidekiq-metrics.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'aws'
require 'sidekiq'
require 'erb'

# ENV['REDIS_URL'] need to be setted

AWS_CW_NAMESPACE = 'MySite'

queues = Sidekiq::Stats.new.queues

metric = AWS::CloudWatch::Metric.new "#{AWS_CW_NAMESPACE}/Sidekiq", "QueueSize"
metric.put_data [{value: queues.values.inject(0, :+), unit: 'Count'}]

metric = AWS::CloudWatch::Metric.new "#{AWS_CW_NAMESPACE}/Sidekiq", "PaperclipQueueSize"
metric.put_data [{value: queues['paperclip'] || 0, unit: 'Count'}]