capistrano recipe for working with slicehost dns api

deploy.rb

load 'config/dns'

set :ip, '127.0.0.1'
set :domains, %w(example.net. example.com. example.org.)

dns.rb

require 'activeresource'

# make sure to add `set :slicehost_api_password, 'yourkey'` to your ~/.caprc
set :slicehost_api_password, nil unless exists?(:slicehost_api_password)
SLICEHOST_API_PASSWORD = slicehost_api_password

class Zone < ActiveResource::Base
  self.site = "https://api.slicehost.com/"
  self.user = SLICEHOST_API_PASSWORD
  
  def self.find_or_create(origin)
    self.find_by_origin(origin)
  rescue ActiveResource::Redirection
    Zone.create(:origin => origin, :ttl => 86400)
  end
  
  def self.find_by_origin(origin)
    Zone.find(:conditions => {:origin => origin})
  end
end

class Record < ActiveResource::Base
  self.site = "https://api.slicehost.com/"
  self.user = SLICEHOST_API_PASSWORD
  
  def self.safe_create(*args)
    self.create(*args)
  rescue ActiveResource::ForbiddenAccess
    false
  end
end

namespace :dns do
  task :list_zones do
    Zone.find(:all).each {|zone| puts zone.origin }
  end
  
  desc "Setup DNS on Slicehost"
  task :setup do
    domains.each {|domain|
      puts "Setting up #{domain}..."
      zone = Zone.find_or_create(domain)
      
      Record.safe_create(:record_type => 'A', :zone_id => zone.id, :name => '*', :data => ip)
      Record.safe_create(:record_type => 'A', :zone_id => zone.id, :name => domain, :data => ip)

      (1..3).each{|e| Record.safe_create(:record_type => 'NS', 
                                         :zone_id => zone.id, 
                                         :name => domain, 
                                         :data => "ns#{e}.slicehost.net.")
      }
    }
  end
end