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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 AutoScaling
# Provides a helper method for parsing scaling policy options.
# @api private
module ScalingPolicyOptions
protected
# @param [Hash] options
#
# @option options [required,String] :adjustment_type Specifies whether
# the adjustment is an absolute number or a percentage of the current
# capacity. Valid values are:
#
# * 'ChangeInCapacity'
# * 'ExactCapacity'
# * 'PercentChangeInCapacity'
#
# @option options [required,Integer] :scaling_adjustment The number of
# instances by which to scale. `:adjustment_type` determines the
# interpretation of this umber (e.g., as an absolute number or as a
# percentage of the existing Auto Scaling group size). A positive
# increment adds to the current capacity and a negative value
# removes from the current capacity.
#
# @option options [Integer] :cooldown The amount of time, in seconds,
# after a scaling activity completes before any further
# trigger-related scaling activities can start.
#
# @option options [Integer] :min_adjustment_step
#
# @return [Hash]
#
def scaling_policy_options auto_scaling_group, policy_name, options
opts = {}
opts[:auto_scaling_group_name] = auto_scaling_group.name
opts[:policy_name] = policy_name
[
:cooldown,
:adjustment_type,
:scaling_adjustment,
:min_adjustment_step,
].each do |opt|
opts[opt] = options[opt] if options.key?(opt)
end
opts
end
end
end
end
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