Contents

require 'awsum/ec2/parsers/region_parser'

module Awsum
  class Ec2
    class Region
      attr_reader :name, :end_point

      def initialize(ec2, name, end_point) #:nodoc:
        @ec2 = ec2
        @name = name
        @end_point = end_point
      end

      # List the AvailabilityZone(s) of this Region
      def availability_zones
        use do
          @ec2.availability_zones
        end
      end

      # Operate all Awsum::Ec2 methods against this Region
      #
      # ====Example
      #
      #   ec2.region('eu-west-1').use
      #   ec2.availability_zones #Will give you all the availability zones in the eu-west-1 region
      #
      #   Alternative:
      #   ec2.region('eu-west-1') do |region|
      #     region.availability_zones
      #   end
      def use(&block)
        if block_given?
          begin
            old_host = @ec2.host
            @ec2.host = end_point
            block.arity < 1 ? instance_eval(&block) : block[self]
          ensure
            @ec2.host = old_host
          end
        else
          @ec2.host = end_point
          self
        end
      end

    private
      #--
      # Will pass all missing methods onto the ec2 object
      def method_missing(method_name, *args, &block)
        use do
          @ec2.send(method_name, *args, &block)
        end
      end

      def respond_to?(method_name, include_private = false)
        @ec2.respond_to?(method_name, include_private) || super
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
awsum-0.5.4	lib/awsum/ec2/region.rb
awsum-0.5.3	lib/awsum/ec2/region.rb