Ruby singleton class for pubnub push notification.

pubnub_singleton.rb

require 'singleton'

class PubnubSingleton
  include Singleton
  attr_accessor :pubnub

  def initialize
    @pubnub = Pubnub.new(
        publish_key: ENV['PUBNUB_PUBLISH_KEY'],
        subscribe_key: ENV['PUBNUB_SUBSCRIBE_KEY'],
        secret_key: ENV['PUBNUB_SECRET_KEY'],
        logger: Rails.logger
    )
  end

  def self.client
    self.instance.pubnub
  end
end

# It will be send notification by this format 
# PubnubSingleton.client.publish(message: message, channel: station)