    # File lib/fog/aws/compute.rb, line 315
            def initialize(options={})
              require 'fog/core/parser'

              @use_iam_profile = options[:use_iam_profile]
              setup_credentials(options)
              @connection_options     = options[:connection_options] || {}
              @region                 = options[:region] ||= 'us-east-1'
              @instrumentor           = options[:instrumentor]
              @instrumentor_name      = options[:instrumentor_name] || 'fog.aws.compute'
              @version                = options[:version]     ||  '2012-12-01'

              if @endpoint = options[:endpoint]
                endpoint = URI.parse(@endpoint)
                @host = endpoint.host
                @path = endpoint.path
                @port = endpoint.port
                @scheme = endpoint.scheme
              else
                @host = options[:host] || "ec2.#{options[:region]}.amazonaws.com"
                @path       = options[:path]        || '/'
                @persistent = options[:persistent]  || false
                @port       = options[:port]        || 443
                @scheme     = options[:scheme]      || 'https'
              end
              @connection = Fog::Connection.new("#{@scheme}://#{@host}:#{@port}#{@path}", @persistent, @connection_options)
            end