2.rb

class SfdcHTTP

  attr_accessor :expiration_date, :client

  def initialize
    @@client ||= set_client
    @@expiration_date = nil
  end

  class << self

    def get_client
      if expiration_date == nil
        set_client
        client
      elsif Time.now - expiration_date < 240
        client
      else
        set_client
        client
      end
    end

    def set_client
      expiration_date = Time.now
      client = Manticore::Client.new(
        keepalive: true,
        pool_max: 50,
        pool_max_per_route: 50,
        ssl: { verify: :disable }
      )
      client
    end

  end # End class methods

end