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(options = {}) ⇒ Object 



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

def getInstanceTypes(options={})
  unless @instance_types
    @instance_types = {}
    require "mechanize"
    mechanize = options[:mechanize]
    unless mechanize
      mechanize = Mechanize.new
      mechanize.user_agent_alias = 'Mac Safari' # Pretend to use a Mac
    end
    url = options[:url] || 'http://aws.amazon.com/ec2/instance-types/instance-details/'

    page = mechanize.get(url)

    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

    cols = head.search('td').collect { |td|
      text = td.text.to_s
      text = text.gsub(%r/(\r?\n)+/, ' ').strip
      CGI.unescapeHTML(text)
    }

    @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
  end
  @instance_types
end