class Dynamic53

Constants

DEFAULT_TTL
VERSION

Attributes

hostname[R]

options[R]

zone[R]

Public Class Methods

new(zone, hostname, options={}) click to toggle source

Initializes an object for updating the Route 53 hostname with the machine's current public IP address.

# File lib/dynamic_53.rb, line 15
def initialize(zone, hostname, options={})
  @zone = zone
  @hostname = hostname
  @options = options
end

Public Instance Methods

ip_address() click to toggle source

fetch the current machine's public IP address.

# File lib/dynamic_53.rb, line 31
def ip_address
  @ip_address ||=
      begin
        ip_address = Net::HTTP.get("bot.whatismyipaddress.com", "/")
        $stdout.puts "Public IP Address: #{ip_address}" if options[:verbose]
        ip_address
      end
end

record_set() click to toggle source

Fetch a record set object for the given hostname in the Route 53 zone specified.

# File lib/dynamic_53.rb, line 51
def record_set
  @record_set ||= AWS::Route53::HostedZone.new(zone_id).rrsets[hostname, 'A']
end

route_53_client() click to toggle source

A client for making Route 53 API requests.

# File lib/dynamic_53.rb, line 56
def route_53_client
  @route_53_client ||= AWS::Route53.new.client
end

update() click to toggle source

perform the Route 53 update, returning the AWS SDK changelist object for the change.

# File lib/dynamic_53.rb, line 22
def update
  record_set.ttl = options[:ttl] || DEFAULT_TTL
  record_set.resource_records = [{:value => ip_address}]
  result = record_set.update
  $stdout.puts "Record updated" if options[:verbose]
  result
end

zone_id() click to toggle source

Fetches the AWS Route53 zone id for the specified zone.

# File lib/dynamic_53.rb, line 41
def zone_id
  route_53_client.
      list_hosted_zones[:hosted_zones].
      each.
      select { |z| z[:name] == zone }.
      map {|z| z[:id] }.
      first
end