Class: Rubber::Cloud::DigitalOcean

Inherits:
Fog
  • Object
show all
Defined in:
lib/rubber/cloud/digital_ocean.rb

Instance Attribute Summary

Attributes inherited from Base

#capistrano, #env

Instance Method Summary collapse

Methods inherited from Fog

#after_create_volume, #after_destroy_volume, #attach_static_ip, #before_create_volume, #before_destroy_volume, #compute_provider, #create_image, #create_static_ip, #create_volume, #describe_images, #describe_load_balancers, #describe_static_ips, #destroy_image, #destroy_spot_instance_request, #destroy_static_ip, #destroy_volume, #detach_static_ip, #reboot_instance, #should_destroy_volume_when_instance_destroyed?, #start_instance, #stop_instance, #storage, #storage_provider, #table_store

Methods inherited from Base

#after_create_instance, #after_refresh_instance, #after_start_instance, #after_stop_instance, #before_create_instance, #before_refresh_instance, #before_start_instance, #before_stop_instance, #describe_security_groups, #inject_auto_security_groups, #isolate_group_name, #isolate_groups, #isolate_prefix, #setup_security_groups, #setup_vpc, #should_disable_password_based_ssh_login?

Constructor Details

#initialize(env, capistrano) ⇒ DigitalOcean

Returns a new instance of DigitalOcean.



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# File 'lib/rubber/cloud/digital_ocean.rb', line 9

def initialize(env, capistrano)
  compute_credentials = {
    :provider => 'DigitalOcean',
    :version => 'v2',
    :digitalocean_token => env.digital_ocean_token,
  }

  if env.cloud_providers && env.cloud_providers.aws
    storage_credentials = {
      :provider => 'AWS',
      :aws_access_key_id => env.cloud_providers.aws.access_key,
      :aws_secret_access_key => env.cloud_providers.aws.secret_access_key,
      :path_style => true
    }

    storage_credentials[:region] = env.cloud_providers.aws.region

    env['storage_credentials'] = storage_credentials
  end

  env['compute_credentials'] = compute_credentials
  super(env, capistrano)
end

Instance Method Details

#active_state ⇒ Object 



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# File 'lib/rubber/cloud/digital_ocean.rb', line 137

def active_state
  'active'
end

#create_instance(instance_alias, image_name, image_type, security_groups, availability_zone, region, fog_options = {}) ⇒ Object 



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# File 'lib/rubber/cloud/digital_ocean.rb', line 33

def create_instance(instance_alias, image_name, image_type, security_groups, availability_zone, region, fog_options={})
  do_region = compute_provider.regions.find { |r| [r.name, r.slug].include?(region) }
  if do_region.nil?
    raise "Invalid region for DigitalOcean: #{region}"
  end

  if env.private_networking && ! do_region.features.include?("private_networking")
    raise "Private networking is enabled, but region #{region} does not support it"
  end

  image = compute_provider.images.find { |i| i.name == image_name }
  if image.nil?
    raise "Invalid image name for DigitalOcean: #{image_name}"
  end

  # Downcase image_type for backward compatability with v1
  flavor = compute_provider.flavors.find { |f| f.slug == image_type.downcase }

  if flavor.nil?
    raise "Invalid image type for DigitalOcean: #{image_type}"
  end

  if env.key_name.nil?
    raise 'missing key_name for DigitalOcean'
  end

  # Check if the SSH key has been added to DigitalOcean yet.
  # TODO (nirvdrum 03/23/13): DigitalOcean has an API for getting a single SSH key, but it hasn't been added to fog yet.  We should add it.
  ssh_key = compute_provider.list_ssh_keys.body['ssh_keys'].find { |key| key['name'] == env.key_name }
  if ssh_key.nil?
    if env.key_file
      compute_provider.create_ssh_key(env.key_name, File.read("#{env.key_file}.pub"))

      # Although not documented, DigitalOcean is eventually consistent.  Receiving a 200 response with the key
      # body does not mean the key has propagated through their systems yet.  Thus we need to query to see if
      # the key is yet available.  Otherwise our request will end up creating a droplet without an attached key.

      begin
        sleep(0.5)
        ssh_key = compute_provider.list_ssh_keys.body['ssh_keys'].find { |key| key['name'] == env.key_name }
      end while ssh_key.nil?

    else
      raise 'Missing key_file for DigitalOcean'
    end
  end

  response = compute_provider.servers.create({:name => "#{Rubber.env}-#{instance_alias}",
                                              :image => image.slug,
                                              :size => flavor.slug,
                                              :flavor => flavor.slug,
                                              :region => do_region.slug,
                                              :ssh_keys => [ssh_key['id']],
                                              :private_networking => (env.private_networking.to_s.downcase == 'true')
                                             }
                                              .merge(Rubber::Util.symbolize_keys(fog_options))
                                            )

  response.id
end

#describe_instances(instance_id = nil) ⇒ Object 



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# File 'lib/rubber/cloud/digital_ocean.rb', line 94

def describe_instances(instance_id=nil)
  instances = []
  opts = {}

  if instance_id
    response = [compute_provider.servers.get(instance_id)]
  else
    response = compute_provider.servers.all(opts)
  end

  response.each do |item|
    instance = {}
    instance[:id] = item.id
    instance[:state] = item.status
    instance[:type] = item.size_slug

    public_networking_info = item.networks['v4'].find do |n|
      n['type'] == 'public'
    end

    if public_networking_info
      instance[:external_ip] = public_networking_info['ip_address']
    end

    private_networking_info = item.networks['v4'].find do |n|
      n['type'] == 'private'
    end

    if private_networking_info
      instance[:internal_ip] = private_networking_info['ip_address']
    elsif public_networking_info
      instance[:internal_ip] = public_networking_info['ip_address']
    end

    instance[:region_id] = item.region
    instance[:provider] = 'digital_ocean'
    instance[:platform] = Rubber::Platforms::LINUX
    instances << instance
  end

  return instances
end

#destroy_instance(instance_id) ⇒ Object 



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# File 'lib/rubber/cloud/digital_ocean.rb', line 141

def destroy_instance(instance_id)
  # The Digital Ocean API will return a 422 if we attempt to destroy an
  # instance that's in the middle of booting up, so wait until it's
  # in a non-"new" state
  print 'Waiting for non-new instance state'

  loop do
    instance = describe_instances(instance_id).first

    print '.'

    break unless instance[:state] == 'new'

    sleep 1
  end

  response = compute_provider.servers.get(instance_id).delete()
end