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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
module FilteredCollection
def initialize options = {}
@filters = options[:filters] || []
super
end
# Specify one or more criteria to filter elastic IP addresses by.
# A subsequent call to #each will limit the results returned
# by provided filters.
#
# * Chain multiple calls of #filter together to AND multiple conditions
# together.
# * Supply multiple values to a singler #filter call to OR those
# value conditions together.
# * '*' matches one or more characters and '?' matches any one
# character.
#
def filter filter_name, *values
filters = @filters.dup
filters << { :name => filter_name, :values => values.flatten }
collection_with(:filters => filters)
end
# @api private
def filtered_request client_method, options = {}, &block
options[:filters] = @filters unless @filters.empty?
client.send(client_method, options)
end
protected
def vpc_id_option options
vpc_id = options[:vpc]
vpc_id ||= options[:vpc_id]
vpc_id ||= filter_value_for('vpc-id')
vpc_id = vpc_id.id if vpc_id.is_a?(VPC)
vpc_id
end
protected
def subnet_id_option options
subnet_id = options.delete(:subnet)
subnet_id ||= options[:subnet_id]
subnet_id ||= filter_value_for('subnet-id')
subnet_id = subnet_id.id if subnet_id.is_a?(Subnet)
subnet_id
end
protected
def filter_value_for filter_name
@filters.each do |filter|
return filter[:values].first if filter[:name] == filter_name
end
nil
end
# @api private
protected
def preserved_options
{ :config => config, :filters => @filters }
end
# @api private
protected
def collection_with(options = {})
self.class.new(preserved_options.merge(options))
end
end
end
end
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