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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.
module AWS
class EC2
# Temporary class that will be removed once the rest of the taggable
# EC2 resources have been modeled.
class ResourceObject < Resource
def initialize id, options = {}
@id = id
@resource_type = options[:resource_type]
super
end
attr_reader :id
include TaggedItem
# @api private
def tagging_resource_type
@resource_type
end
# @api private
# We don't know how to make a describe call for this object yet
def cached_tags; nil; end
end
# Represents all EC2 tags in an account.
class TagCollection < Collection
# Creates a new Tag and assigns it to an EC2 resource.
#
# @example tagging with names (keys) only
#
# ec2.tags.create(instance, 'webserver')
#
# @example tagging with names (keys) and values
#
# ec2.tags.create(instance, 'stage', :value => 'production')
#
# @param [Object] resource The item to tag. This should be a taggable
# EC2 resource, like an instance, security group, etc.
# @param [String] key The tag key (or name).
# @param [Hash] options
# @option optins [String] :value ('') The optional tag value. When
# left blank its assigned the empty string.
# @return [Tag]
def create resource, key, options = {}
value = options[:value].to_s
client.create_tags(
:resources => [resource.id],
:tags => [{ :key => key, :value => value }])
Tag.new(resource, key, :value => value, :config => config)
end
# @return [Tag] Returns a reference to a tag with the given name.
def [] tag_name
super
end
# Yields once for each tag.
# @yield [tag]
# @yieldparam [Tag] tag
# @return [nil]
def each &block
response = filtered_request(:describe_tags)
response.tag_set.each do |tag|
resource_class_name = Core::Inflection.class_name(tag.resource_type)
if EC2.const_defined?(resource_class_name)
resource_class = EC2.const_get(resource_class_name)
resource = resource_class.new(tag.resource_id, :config => config)
else
resource = ResourceObject.new(tag.resource_id,
:resource_type => tag.resource_type,
:config => config)
end
yield(Tag.new(resource, tag.key))
end
nil
end
# @api private
protected
def member_class
Tag
end
end
end
end
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