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# Copyright 2011-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
require 'aws/ec2/internet_gateway/attachment'
module AWS
class EC2
class InternetGateway < Resource
include TaggedItem
def initialize internet_gateway_id, options = {}
@internet_gateway_id = internet_gateway_id
super
end
# @return [String]
attr_reader :internet_gateway_id
alias_method :id, :internet_gateway_id
attribute :vpc_id
attribute :attachment_set
protected :attachment_set
populates_from(:describe_internet_gateways) do |resp|
resp.internet_gateway_set.find do |gateway|
gateway.internet_gateway_id == internet_gateway_id
end
end
# @return [Array<InternetGateway::Attachment>]
def attachments
attachment_set.map {|details| Attachment.new(self, details) }
end
# @return [VPC,nil] Returns the currently attached VPC, or nil
# if this gateway has not been attached.
def vpc
if attachment = attachments.first
attachment.vpc
end
end
# Attaches this internet gateway to the given VPC. If this
# gateway is already attached to a different VPC, it will
# be detached from that one first. If you pass nil, then
# this internet gateway will
#
# internet_gateway.vpc = 'vpc-123'
#
# @param [VPC,String] vpc A {VPC} object or a vpc id string.
#
def vpc= vpc
if attachment = attachments.first
attachment.delete
end
attach(vpc) if vpc
end
# Attaches this internet gateway to the given VPC.
# @param [VPC,String] vpc A {VPC} object or a vpc id string.
# @return [nil]
def attach vpc
client_opts = {}
client_opts[:internet_gateway_id] = internet_gateway_id
client_opts[:vpc_id] = vpc_id_option(vpc)
client.attach_internet_gateway(client_opts)
nil
end
# Detaches this internet gateway from the given VPC.
# @param [VPC,String] vpc A {VPC} object or a vpc id string.
# @return [nil]
def detach vpc
client_opts = {}
client_opts[:internet_gateway_id] = internet_gateway_id
client_opts[:vpc_id] = vpc_id_option(vpc)
client.detach_internet_gateway(client_opts)
nil
end
# Deletes this internet gateway.
# @return [nil]
def delete
client_opts = {}
client_opts[:internet_gateway_id] = internet_gateway_id
client.delete_internet_gateway(client_opts)
nil
end
# @return [Boolean] Returns true if the gateway exists.
def exists?
begin
get_resource
true
rescue Errors::InvalidInternetGatewayID::NotFound
false
end
end
protected
def vpc_id_option vpc
vpc.is_a?(VPC) ? vpc.vpc_id : vpc
end
end
end
end
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