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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
module Core
# @api private
class ResourceCache
def initialize
@cache = {}
end
def store(key, attributes)
(@cache[key] ||= {}).merge!(attributes)
end
def cached?(key, attribute)
attributes = @cache[key] and attributes.has_key?(attribute)
end
def get(key, attribute)
raise "No cached value for attribute :#{attribute} of #{key}" unless
cached?(key, attribute)
@cache[key][attribute]
end
end
end
end
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