Contents

class Marty::Aws::Base
  # this base class is used for instance information/credential acquisition

  # FIXME: should that be in public marty gem?
  # aws reserved host used to get instance meta-data
  META_DATA_HOST = '169.254.169.254'

  attr_reader :id,
              :doc,
              :role,
              :creds,
              :version,
              :host,
              def self.get url
                uri = URI.parse(url)
                req = Net::HTTP.new(uri.host, uri.port)
                req.read_timeout = req.open_timeout = ENV['AWS_REQUEST_TIMEOUT'] || 0.25
                req.start { |http| http.get(uri.to_s) }.body
              end

  def self.is_aws?
    # FIXME: hack to pass tests on CI
    return false if Rails.env.test?

    response = get("http://#{META_DATA_HOST}") rescue nil
    response.present?
  end

  def initialize
    @id            = get_instance_id
    @doc           = get_document
    @role          = get_role
    @creds         = get_credentials
    @version       = '2016-11-15'
  end

  def query_meta_data query
    self.class.get("http://#{META_DATA_HOST}/latest/meta-data/#{query}/")
  end

  def query_dynamic query
    self.class.get("http://#{META_DATA_HOST}/latest/dynamic/#{query}/")
  end

  private

  def get_instance_id
    query_meta_data('instance-id').to_s
  end

  def get_role
    query_meta_data('iam/security-credentials').to_s
  end

  def sym obj
    obj.each_with_object({}) { |(k, v), h| h[k.underscore.to_sym] = v }
  end

  def get_credentials
    sym(JSON.parse(query_meta_data("iam/security-credentials/#{@role}")))
  end

  def get_document
    sym(JSON.parse(query_dynamic('instance-identity/document')))
  end
end

Version data entries

51 entries across 51 versions & 1 rubygems

Version	Path
marty-14.3.0	lib/marty/aws/base.rb
marty-14.0.0	lib/marty/aws/base.rb
marty-13.0.2	lib/marty/aws/base.rb
marty-11.0.0	lib/marty/aws/base.rb
marty-10.0.3	lib/marty/aws/base.rb
marty-10.0.2	lib/marty/aws/base.rb
marty-10.0.0	lib/marty/aws/base.rb
marty-9.5.1	lib/marty/aws/base.rb
marty-9.5.0	lib/marty/aws/base.rb
marty-9.3.3	lib/marty/aws/base.rb
marty-9.3.2	lib/marty/aws/base.rb
marty-9.3.0	lib/marty/aws/base.rb
marty-8.5.0	lib/marty/aws/base.rb
marty-8.4.1	lib/marty/aws/base.rb
marty-8.3.1	lib/marty/aws/base.rb
marty-8.2.0	lib/marty/aws/base.rb
marty-8.0.0	lib/marty/aws/base.rb
marty-6.1.0	lib/marty/aws/base.rb
marty-5.2.0	lib/marty/aws/base.rb
marty-5.1.4	lib/marty/aws/base.rb