module Restforce::Concerns::Streaming

def faye

Public: Faye client to use for subscribing to PushTopics 
def faye
  raise 'Instance URL missing. Call .authenticate! first.' unless options[:instance_url]
  @faye ||= Faye::Client.new("#{options[:instance_url]}/cometd/#{options[:api_version]}").tap do |client|
    client.bind 'transport:down' do
      Restforce.log "[COMETD DOWN]"
      client.set_header 'Authorization', "OAuth #{authenticate!.access_token}"
    end
    client.bind 'transport:up' do
      Restforce.log "[COMETD UP]"
    end
  end
end

def subscribe(channels, &block)

Returns a Faye::Subscription

block - A block to run when a new message is received.
channels - The name of the PushTopic channel(s) to subscribe to.

Public: Subscribe to a PushTopic 
def subscribe(channels, &block)
  faye.subscribe Array(channels).map { |channel| "/topic/#{channel}" }, &block
end