init.rb

require 'escargot'

ActiveRecord::Base.class_eval do
  include Escargot::ActiveRecordExtensions
end

ElasticSearch::Api::Hit.class_eval do
  include Escargot::HitExtensions
end

ElasticSearch::Client.class_eval do
  include Escargot::AdminIndexVersions
end

config_file = Rails.root.join("config", "elasticsearch.yml")

unless File.exists?(config_file)
  Rails.logger.debug "No config/elastic_search.yaml file found, connecting to localhost:9200"
  $elastic_search_client ||= ElasticSearch.new("http://localhost:9200", :timeout => 2)
else
  config = YAML.load_file(config_file)
  
  begin
    servers = config[Rails.env][:hosts]
  rescue
    # Couldn't parse
  end
  
  servers ||= ['localhost:9200']
  
  $elastic_search_client ||= ElasticSearch.new(servers)
end