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81 lines
3.6 KiB
Ruby
81 lines
3.6 KiB
Ruby
module Fog
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module AWS
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class AutoScaling
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class Real
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require 'fog/aws/parsers/auto_scaling/basic'
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# Adjusts the desired size of the AutoScalingGroup by initiating
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# scaling activities. When reducing the size of the group, it is not
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# possible to define which EC2 instances will be terminated. This
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# applies to any auto-scaling decisions that might result in
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# terminating instances.
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#
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# There are two common use cases for set_desired_capacity: one for
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# users of the Auto Scaling triggering system, and another for
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# developers who write their own triggering systems. Both use cases
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# relate to the concept of cooldown.
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#
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# In the first case, if you use the Auto Scaling triggering system,
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# set_desired_capacity changes the size of your Auto Scaling group
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# without regard to the cooldown period. This could be useful, for
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# example, if Auto Scaling did something unexpected for some reason. If
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# your cooldown period is 10 minutes, Auto Scaling would normally
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# reject requests to change the size of the group for that entire 10
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# minute period. The set_desired_capacity command allows you to
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# circumvent this restriction and change the size of the group before
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# the end of the cooldown period.
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#
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# In the second case, if you write your own triggering system, you can
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# use set_desired_capacity to control the size of your Auto Scaling
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# group. If you want the same cooldown functionality that Auto Scaling
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# offers, you can configure set_desired_capacity to honor cooldown by
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# setting the HonorCooldown parameter to true.
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#
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# ==== Parameters
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# * auto_scaling_group_name<~String> - The name of the Auto Scaling
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# group.
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# * desired_capacity<~Integer> - The new capacity setting for the Auto
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# Scaling group.
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# * options<~Hash>:
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# * 'HonorCooldown'<~Boolean> - By default, set_desired_capacity
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# overrides any cooldown period. Set to true if you want Auto
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# Scaling to reject this request if the Auto Scaling group is in
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# cooldown.
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#
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# ==== Returns
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# * response<~Excon::Response>:
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# * body<~Hash>:
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# * 'ResponseMetadata'<~Hash>:
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# * 'RequestId'<~String> - Id of request
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#
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# ==== See Also
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# http://docs.amazonwebservices.com/AutoScaling/latest/APIReference/API_SetDesiredCapacity.html
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#
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def set_desired_capacity(auto_scaling_group_name, desired_capacity, options = {})
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request({
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'Action' => 'SetDesiredCapacity',
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'AutoScalingGroupName' => auto_scaling_group_name,
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'DesiredCapacity' => desired_capacity,
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:parser => Fog::Parsers::AWS::AutoScaling::Basic.new
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}.merge!(options))
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end
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end
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class Mock
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def set_desired_capacity(auto_scaling_group_name, desired_capacity, options = {})
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unless self.data[:auto_scaling_groups].key?(auto_scaling_group_name)
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Fog::AWS::AutoScaling::ValidationError.new('AutoScalingGroup name not found - null')
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end
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self.data[:auto_scaling_groups][auto_scaling_group_name]['DesiredCapacity'] = desired_capacity
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response = Excon::Response.new
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response.status = 200
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response.body = {
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'ResponseMetadata' => { 'RequestId' => Fog::AWS::Mock.request_id }
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}
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response
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end
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end
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end
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end
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end
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