Module: DLDInternet::AWS::EC2

Defined in:
lib/dldinternet/aws/ec2/instance_types.rb

Constant Summary collapse

HEADINGS = 
[
    :instance_family,         # [0]
    :instance_type,           # [1]
    :processor_arch,          # [2]
    :vCPU,                    # [3]
    :ECU,                     # [4]
    :memory,                  # [5]
    :instance_storage,        # [6]
    :EBS_optimized_available, # [7]
    :network_performance      # [8]
]

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#instance_types ⇒ Object (readonly)

Returns the value of attribute instance_types.



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# File 'lib/dldinternet/aws/ec2/instance_types.rb', line 16

def instance_types
  @instance_types
end

Instance Method Details

#getInstanceTypes ⇒ Object 



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# File 'lib/dldinternet/aws/ec2/instance_types.rb', line 18

def getInstanceTypes()
  unless @instance_types
    @instance_types = {}
    require "mechanize"
    agent = Mechanize.new
    agent.user_agent_alias = 'Mac Safari' # Pretend to use a Mac
    begin
      page = agent.get('http://aws.amazon.com/ec2/instance-types/instance-details/')
      #body = page.body.gsub('<br>', " \n")
      require "nokogiri"
      nk = Nokogiri::HTML(page.body)
      table = nk.css("div#yui-main div.yui-b table")
      raise AWSEC2Error.new "Cannot find instance type table" unless table.is_a?(Nokogiri::XML::NodeSet)
      rows = table.search('tr')[0..-1]
      head = rows.shift
      #br   = nbsp = Nokogiri::HTML("<br>").text
      cols = head.search('td').collect { |td|
        text = td.text.to_s
        text = text.gsub(%r/(\r?\n)+/, ' ').strip
        CGI.unescapeHTML(text)
      } #.select{ |col| col unless col == '' }

      @instance_types[:headings] = {}
      (0..cols.size-1).map{|i| @instance_types[:headings][HEADINGS[i]] = cols[i] }

      @instance_types[:details] = []
      rows.each do |row|

        cells = row.search('td').collect { |td|
          CGI.unescapeHTML(td.text.to_s.gsub(%r/(\r?\n)+/, ' ').strip.gsub('32-bit or64-bit', '32-bit or 64-bit'))
        }
        raise StandardError.new "This row does not have the same number of cells as the table header: #{row.text.to_s.strip}" unless cells.size == cols.size
        instance = {}
        (0..cells.size-1).map{|i| instance[HEADINGS[i]] = cells[i] }
        @instance_types[:details] << instance

      end
    rescue Net::HTTPNotFound => e
      @logger.error "Unable to retrieve list of flavors! #{FLAVORS_URL} was not found! (#{e.message})"
      raise e
    end
  end
  @instance_types
end