InfrastructureController to support Nagios health check

infrastructure_controller.rb

# app/controllers/infrastructure_controller.rb

class InfrastructureController < ActionController::Base

  def health_check
    @checks = { database: ActiveRecord::Migrator.current_version,
                redis: redis_check,
                version: %x(git log --pretty=format:'%h' -1) }
    if @checks[:redis] == "Not connected"
      @notification = "Error 500, Can't find Redis"
    else
      @notification = 'Everything seems fine'
    end
  end

private

  def redis_check
    r = Redis.new
    r.ping rescue "Not connected"
  end

end