# WARNING ABOUT GENERATED CODE
#
# This file is generated. See the contributing guide for more information:
# https://github.com/aws/aws-sdk-ruby/blob/master/CONTRIBUTING.md
#
# WARNING ABOUT GENERATED CODE

module Aws::ApplicationAutoScaling
  module Types

    # Represents a CloudWatch alarm associated with a scaling policy.
    #
    # @!attribute [rw] alarm_name
    #   The name of the alarm.
    #   @return [String]
    #
    # @!attribute [rw] alarm_arn
    #   The Amazon Resource Name (ARN) of the alarm.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/Alarm AWS API Documentation
    #
    class Alarm < Struct.new(
      :alarm_name,
      :alarm_arn)
      include Aws::Structure
    end

    # @note When making an API call, you may pass DeleteScalingPolicyRequest
    #   data as a hash:
    #
    #       {
    #         policy_name: "ResourceIdMaxLen1600", # required
    #         service_namespace: "ecs", # required, accepts ecs, elasticmapreduce, ec2, appstream
    #         resource_id: "ResourceIdMaxLen1600", # required
    #         scalable_dimension: "ecs:service:DesiredCount", # required, accepts ecs:service:DesiredCount, ec2:spot-fleet-request:TargetCapacity, elasticmapreduce:instancegroup:InstanceCount, appstream:fleet:DesiredCapacity
    #       }
    #
    # @!attribute [rw] policy_name
    #   The name of the scaling policy.
    #   @return [String]
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scalable target.
    #   This string consists of the resource type and unique identifier.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension. This string consists of the service
    #   namespace, resource type, and scaling property.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DeleteScalingPolicyRequest AWS API Documentation
    #
    class DeleteScalingPolicyRequest < Struct.new(
      :policy_name,
      :service_namespace,
      :resource_id,
      :scalable_dimension)
      include Aws::Structure
    end

    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DeleteScalingPolicyResponse AWS API Documentation
    #
    class DeleteScalingPolicyResponse < Aws::EmptyStructure; end

    # @note When making an API call, you may pass DeregisterScalableTargetRequest
    #   data as a hash:
    #
    #       {
    #         service_namespace: "ecs", # required, accepts ecs, elasticmapreduce, ec2, appstream
    #         resource_id: "ResourceIdMaxLen1600", # required
    #         scalable_dimension: "ecs:service:DesiredCount", # required, accepts ecs:service:DesiredCount, ec2:spot-fleet-request:TargetCapacity, elasticmapreduce:instancegroup:InstanceCount, appstream:fleet:DesiredCapacity
    #       }
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scalable target.
    #   This string consists of the resource type and unique identifier.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension associated with the scalable target. This
    #   string consists of the service namespace, resource type, and scaling
    #   property.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DeregisterScalableTargetRequest AWS API Documentation
    #
    class DeregisterScalableTargetRequest < Struct.new(
      :service_namespace,
      :resource_id,
      :scalable_dimension)
      include Aws::Structure
    end

    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DeregisterScalableTargetResponse AWS API Documentation
    #
    class DeregisterScalableTargetResponse < Aws::EmptyStructure; end

    # @note When making an API call, you may pass DescribeScalableTargetsRequest
    #   data as a hash:
    #
    #       {
    #         service_namespace: "ecs", # required, accepts ecs, elasticmapreduce, ec2, appstream
    #         resource_ids: ["ResourceIdMaxLen1600"],
    #         scalable_dimension: "ecs:service:DesiredCount", # accepts ecs:service:DesiredCount, ec2:spot-fleet-request:TargetCapacity, elasticmapreduce:instancegroup:InstanceCount, appstream:fleet:DesiredCapacity
    #         max_results: 1,
    #         next_token: "XmlString",
    #       }
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_ids
    #   The identifier of the resource associated with the scalable target.
    #   This string consists of the resource type and unique identifier. If
    #   you specify a scalable dimension, you must also specify a resource
    #   ID.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [Array<String>]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension associated with the scalable target. This
    #   string consists of the service namespace, resource type, and scaling
    #   property. If you specify a scalable dimension, you must also specify
    #   a resource ID.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @!attribute [rw] max_results
    #   The maximum number of scalable target results. This value can be
    #   between 1 and 50. The default value is 50.
    #
    #   If this parameter is used, the operation returns up to `MaxResults`
    #   results at a time, along with a `NextToken` value. To get the next
    #   set of results, include the `NextToken` value in a subsequent call.
    #   If this parameter is not used, the operation returns up to 50
    #   results and a `NextToken` value, if applicable.
    #   @return [Integer]
    #
    # @!attribute [rw] next_token
    #   The token for the next set of results.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DescribeScalableTargetsRequest AWS API Documentation
    #
    class DescribeScalableTargetsRequest < Struct.new(
      :service_namespace,
      :resource_ids,
      :scalable_dimension,
      :max_results,
      :next_token)
      include Aws::Structure
    end

    # @!attribute [rw] scalable_targets
    #   The list of scalable targets that matches the request parameters.
    #   @return [Array<Types::ScalableTarget>]
    #
    # @!attribute [rw] next_token
    #   The token required to get the next set of results. This value is
    #   `null` if there are no more results to return.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DescribeScalableTargetsResponse AWS API Documentation
    #
    class DescribeScalableTargetsResponse < Struct.new(
      :scalable_targets,
      :next_token)
      include Aws::Structure
    end

    # @note When making an API call, you may pass DescribeScalingActivitiesRequest
    #   data as a hash:
    #
    #       {
    #         service_namespace: "ecs", # required, accepts ecs, elasticmapreduce, ec2, appstream
    #         resource_id: "ResourceIdMaxLen1600",
    #         scalable_dimension: "ecs:service:DesiredCount", # accepts ecs:service:DesiredCount, ec2:spot-fleet-request:TargetCapacity, elasticmapreduce:instancegroup:InstanceCount, appstream:fleet:DesiredCapacity
    #         max_results: 1,
    #         next_token: "XmlString",
    #       }
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scaling activity.
    #   This string consists of the resource type and unique identifier. If
    #   you specify a scalable dimension, you must also specify a resource
    #   ID.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension. This string consists of the service
    #   namespace, resource type, and scaling property. If you specify a
    #   scalable dimension, you must also specify a resource ID.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @!attribute [rw] max_results
    #   The maximum number of scalable target results. This value can be
    #   between 1 and 50. The default value is 50.
    #
    #   If this parameter is used, the operation returns up to `MaxResults`
    #   results at a time, along with a `NextToken` value. To get the next
    #   set of results, include the `NextToken` value in a subsequent call.
    #   If this parameter is not used, the operation returns up to 50
    #   results and a `NextToken` value, if applicable.
    #   @return [Integer]
    #
    # @!attribute [rw] next_token
    #   The token for the next set of results.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DescribeScalingActivitiesRequest AWS API Documentation
    #
    class DescribeScalingActivitiesRequest < Struct.new(
      :service_namespace,
      :resource_id,
      :scalable_dimension,
      :max_results,
      :next_token)
      include Aws::Structure
    end

    # @!attribute [rw] scaling_activities
    #   A list of scaling activity objects.
    #   @return [Array<Types::ScalingActivity>]
    #
    # @!attribute [rw] next_token
    #   The token required to get the next set of results. This value is
    #   `null` if there are no more results to return.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DescribeScalingActivitiesResponse AWS API Documentation
    #
    class DescribeScalingActivitiesResponse < Struct.new(
      :scaling_activities,
      :next_token)
      include Aws::Structure
    end

    # @note When making an API call, you may pass DescribeScalingPoliciesRequest
    #   data as a hash:
    #
    #       {
    #         policy_names: ["ResourceIdMaxLen1600"],
    #         service_namespace: "ecs", # required, accepts ecs, elasticmapreduce, ec2, appstream
    #         resource_id: "ResourceIdMaxLen1600",
    #         scalable_dimension: "ecs:service:DesiredCount", # accepts ecs:service:DesiredCount, ec2:spot-fleet-request:TargetCapacity, elasticmapreduce:instancegroup:InstanceCount, appstream:fleet:DesiredCapacity
    #         max_results: 1,
    #         next_token: "XmlString",
    #       }
    #
    # @!attribute [rw] policy_names
    #   The names of the scaling policies to describe.
    #   @return [Array<String>]
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scaling policy.
    #   This string consists of the resource type and unique identifier. If
    #   you specify a scalable dimension, you must also specify a resource
    #   ID.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension. This string consists of the service
    #   namespace, resource type, and scaling property. If you specify a
    #   scalable dimension, you must also specify a resource ID.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @!attribute [rw] max_results
    #   The maximum number of scalable target results. This value can be
    #   between 1 and 50. The default value is 50.
    #
    #   If this parameter is used, the operation returns up to `MaxResults`
    #   results at a time, along with a `NextToken` value. To get the next
    #   set of results, include the `NextToken` value in a subsequent call.
    #   If this parameter is not used, the operation returns up to 50
    #   results and a `NextToken` value, if applicable.
    #   @return [Integer]
    #
    # @!attribute [rw] next_token
    #   The token for the next set of results.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DescribeScalingPoliciesRequest AWS API Documentation
    #
    class DescribeScalingPoliciesRequest < Struct.new(
      :policy_names,
      :service_namespace,
      :resource_id,
      :scalable_dimension,
      :max_results,
      :next_token)
      include Aws::Structure
    end

    # @!attribute [rw] scaling_policies
    #   A list of scaling policy objects.
    #   @return [Array<Types::ScalingPolicy>]
    #
    # @!attribute [rw] next_token
    #   The token required to get the next set of results. This value is
    #   `null` if there are no more results to return.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/DescribeScalingPoliciesResponse AWS API Documentation
    #
    class DescribeScalingPoliciesResponse < Struct.new(
      :scaling_policies,
      :next_token)
      include Aws::Structure
    end

    # @note When making an API call, you may pass PutScalingPolicyRequest
    #   data as a hash:
    #
    #       {
    #         policy_name: "PolicyName", # required
    #         service_namespace: "ecs", # required, accepts ecs, elasticmapreduce, ec2, appstream
    #         resource_id: "ResourceIdMaxLen1600", # required
    #         scalable_dimension: "ecs:service:DesiredCount", # required, accepts ecs:service:DesiredCount, ec2:spot-fleet-request:TargetCapacity, elasticmapreduce:instancegroup:InstanceCount, appstream:fleet:DesiredCapacity
    #         policy_type: "StepScaling", # accepts StepScaling
    #         step_scaling_policy_configuration: {
    #           adjustment_type: "ChangeInCapacity", # accepts ChangeInCapacity, PercentChangeInCapacity, ExactCapacity
    #           step_adjustments: [
    #             {
    #               metric_interval_lower_bound: 1.0,
    #               metric_interval_upper_bound: 1.0,
    #               scaling_adjustment: 1, # required
    #             },
    #           ],
    #           min_adjustment_magnitude: 1,
    #           cooldown: 1,
    #           metric_aggregation_type: "Average", # accepts Average, Minimum, Maximum
    #         },
    #       }
    #
    # @!attribute [rw] policy_name
    #   The name of the scaling policy.
    #   @return [String]
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scaling policy.
    #   This string consists of the resource type and unique identifier.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension. This string consists of the service
    #   namespace, resource type, and scaling property.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @!attribute [rw] policy_type
    #   The policy type. If you are creating a new policy, this parameter is
    #   required. If you are updating a policy, this parameter is not
    #   required.
    #   @return [String]
    #
    # @!attribute [rw] step_scaling_policy_configuration
    #   The configuration for the step scaling policy. If you are creating a
    #   new policy, this parameter is required. If you are updating a
    #   policy, this parameter is not required. For more information, see
    #   StepScalingPolicyConfiguration and StepAdjustment.
    #   @return [Types::StepScalingPolicyConfiguration]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/PutScalingPolicyRequest AWS API Documentation
    #
    class PutScalingPolicyRequest < Struct.new(
      :policy_name,
      :service_namespace,
      :resource_id,
      :scalable_dimension,
      :policy_type,
      :step_scaling_policy_configuration)
      include Aws::Structure
    end

    # @!attribute [rw] policy_arn
    #   The Amazon Resource Name (ARN) of the resulting scaling policy.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/PutScalingPolicyResponse AWS API Documentation
    #
    class PutScalingPolicyResponse < Struct.new(
      :policy_arn)
      include Aws::Structure
    end

    # @note When making an API call, you may pass RegisterScalableTargetRequest
    #   data as a hash:
    #
    #       {
    #         service_namespace: "ecs", # required, accepts ecs, elasticmapreduce, ec2, appstream
    #         resource_id: "ResourceIdMaxLen1600", # required
    #         scalable_dimension: "ecs:service:DesiredCount", # required, accepts ecs:service:DesiredCount, ec2:spot-fleet-request:TargetCapacity, elasticmapreduce:instancegroup:InstanceCount, appstream:fleet:DesiredCapacity
    #         min_capacity: 1,
    #         max_capacity: 1,
    #         role_arn: "ResourceIdMaxLen1600",
    #       }
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scalable target.
    #   This string consists of the resource type and unique identifier.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension associated with the scalable target. This
    #   string consists of the service namespace, resource type, and scaling
    #   property.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @!attribute [rw] min_capacity
    #   The minimum value to scale to in response to a scale in event. This
    #   parameter is required if you are registering a scalable target and
    #   optional if you are updating one.
    #   @return [Integer]
    #
    # @!attribute [rw] max_capacity
    #   The maximum value to scale to in response to a scale out event. This
    #   parameter is required if you are registering a scalable target and
    #   optional if you are updating one.
    #   @return [Integer]
    #
    # @!attribute [rw] role_arn
    #   The ARN of an IAM role that allows Application Auto Scaling to
    #   modify the scalable target on your behalf. This parameter is
    #   required when you register a scalable target and optional when you
    #   update one.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/RegisterScalableTargetRequest AWS API Documentation
    #
    class RegisterScalableTargetRequest < Struct.new(
      :service_namespace,
      :resource_id,
      :scalable_dimension,
      :min_capacity,
      :max_capacity,
      :role_arn)
      include Aws::Structure
    end

    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/RegisterScalableTargetResponse AWS API Documentation
    #
    class RegisterScalableTargetResponse < Aws::EmptyStructure; end

    # Represents a scalable target.
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scalable target.
    #   This string consists of the resource type and unique identifier.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension associated with the scalable target. This
    #   string consists of the service namespace, resource type, and scaling
    #   property.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @!attribute [rw] min_capacity
    #   The minimum value to scale to in response to a scale in event.
    #   @return [Integer]
    #
    # @!attribute [rw] max_capacity
    #   The maximum value to scale to in response to a scale out event.
    #   @return [Integer]
    #
    # @!attribute [rw] role_arn
    #   The ARN of an IAM role that allows Application Auto Scaling to
    #   modify the scalable target on your behalf.
    #   @return [String]
    #
    # @!attribute [rw] creation_time
    #   The Unix timestamp for when the scalable target was created.
    #   @return [Time]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/ScalableTarget AWS API Documentation
    #
    class ScalableTarget < Struct.new(
      :service_namespace,
      :resource_id,
      :scalable_dimension,
      :min_capacity,
      :max_capacity,
      :role_arn,
      :creation_time)
      include Aws::Structure
    end

    # Represents a scaling activity.
    #
    # @!attribute [rw] activity_id
    #   The unique identifier of the scaling activity.
    #   @return [String]
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scaling activity.
    #   This string consists of the resource type and unique identifier.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension. This string consists of the service
    #   namespace, resource type, and scaling property.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @!attribute [rw] description
    #   A simple description of what action the scaling activity intends to
    #   accomplish.
    #   @return [String]
    #
    # @!attribute [rw] cause
    #   A simple description of what caused the scaling activity to happen.
    #   @return [String]
    #
    # @!attribute [rw] start_time
    #   The Unix timestamp for when the scaling activity began.
    #   @return [Time]
    #
    # @!attribute [rw] end_time
    #   The Unix timestamp for when the scaling activity ended.
    #   @return [Time]
    #
    # @!attribute [rw] status_code
    #   Indicates the status of the scaling activity.
    #   @return [String]
    #
    # @!attribute [rw] status_message
    #   A simple message about the current status of the scaling activity.
    #   @return [String]
    #
    # @!attribute [rw] details
    #   The details about the scaling activity.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/ScalingActivity AWS API Documentation
    #
    class ScalingActivity < Struct.new(
      :activity_id,
      :service_namespace,
      :resource_id,
      :scalable_dimension,
      :description,
      :cause,
      :start_time,
      :end_time,
      :status_code,
      :status_message,
      :details)
      include Aws::Structure
    end

    # Represents a scaling policy.
    #
    # @!attribute [rw] policy_arn
    #   The Amazon Resource Name (ARN) of the scaling policy.
    #   @return [String]
    #
    # @!attribute [rw] policy_name
    #   The name of the scaling policy.
    #   @return [String]
    #
    # @!attribute [rw] service_namespace
    #   The namespace of the AWS service. For more information, see [AWS
    #   Service Namespaces][1] in the *Amazon Web Services General
    #   Reference*.
    #
    #
    #
    #   [1]: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces
    #   @return [String]
    #
    # @!attribute [rw] resource_id
    #   The identifier of the resource associated with the scaling policy.
    #   This string consists of the resource type and unique identifier.
    #
    #   * ECS service - The resource type is `service` and the unique
    #     identifier is the cluster name and service name. Example:
    #     `service/default/sample-webapp`.
    #
    #   * Spot fleet request - The resource type is `spot-fleet-request` and
    #     the unique identifier is the Spot fleet request ID. Example:
    #     `spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE`.
    #
    #   * EMR cluster - The resource type is `instancegroup` and the unique
    #     identifier is the cluster ID and instance group ID. Example:
    #     `instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0`.
    #
    #   * AppStream 2.0 fleet - The resource type is `fleet` and the unique
    #     identifier is the fleet name. Example: `fleet/sample-fleet`.
    #   @return [String]
    #
    # @!attribute [rw] scalable_dimension
    #   The scalable dimension. This string consists of the service
    #   namespace, resource type, and scaling property.
    #
    #   * `ecs:service:DesiredCount` - The desired task count of an ECS
    #     service.
    #
    #   * `ec2:spot-fleet-request:TargetCapacity` - The target capacity of a
    #     Spot fleet request.
    #
    #   * `elasticmapreduce:instancegroup:InstanceCount` - The instance
    #     count of an EMR Instance Group.
    #
    #   * `appstream:fleet:DesiredCapacity` - The desired capacity of an
    #     AppStream 2.0 fleet.
    #   @return [String]
    #
    # @!attribute [rw] policy_type
    #   The scaling policy type.
    #   @return [String]
    #
    # @!attribute [rw] step_scaling_policy_configuration
    #   The configuration for the step scaling policy.
    #   @return [Types::StepScalingPolicyConfiguration]
    #
    # @!attribute [rw] alarms
    #   The CloudWatch alarms associated with the scaling policy.
    #   @return [Array<Types::Alarm>]
    #
    # @!attribute [rw] creation_time
    #   The Unix timestamp for when the scaling policy was created.
    #   @return [Time]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/ScalingPolicy AWS API Documentation
    #
    class ScalingPolicy < Struct.new(
      :policy_arn,
      :policy_name,
      :service_namespace,
      :resource_id,
      :scalable_dimension,
      :policy_type,
      :step_scaling_policy_configuration,
      :alarms,
      :creation_time)
      include Aws::Structure
    end

    # Represents a step adjustment for a StepScalingPolicyConfiguration.
    # Describes an adjustment based on the difference between the value of
    # the aggregated CloudWatch metric and the breach threshold that you've
    # defined for the alarm.
    #
    # For the following examples, suppose that you have an alarm with a
    # breach threshold of 50:
    #
    # * To trigger the adjustment when the metric is greater than or equal
    #   to 50 and less than 60, specify a lower bound of 0 and an upper
    #   bound of 10.
    #
    # * To trigger the adjustment when the metric is greater than 40 and
    #   less than or equal to 50, specify a lower bound of -10 and an upper
    #   bound of 0.
    #
    # There are a few rules for the step adjustments for your step policy:
    #
    # * The ranges of your step adjustments can't overlap or have a gap.
    #
    # * At most one step adjustment can have a null lower bound. If one step
    #   adjustment has a negative lower bound, then there must be a step
    #   adjustment with a null lower bound.
    #
    # * At most one step adjustment can have a null upper bound. If one step
    #   adjustment has a positive upper bound, then there must be a step
    #   adjustment with a null upper bound.
    #
    # * The upper and lower bound can't be null in the same step
    #   adjustment.
    #
    # @note When making an API call, you may pass StepAdjustment
    #   data as a hash:
    #
    #       {
    #         metric_interval_lower_bound: 1.0,
    #         metric_interval_upper_bound: 1.0,
    #         scaling_adjustment: 1, # required
    #       }
    #
    # @!attribute [rw] metric_interval_lower_bound
    #   The lower bound for the difference between the alarm threshold and
    #   the CloudWatch metric. If the metric value is above the breach
    #   threshold, the lower bound is inclusive (the metric must be greater
    #   than or equal to the threshold plus the lower bound). Otherwise, it
    #   is exclusive (the metric must be greater than the threshold plus the
    #   lower bound). A null value indicates negative infinity.
    #   @return [Float]
    #
    # @!attribute [rw] metric_interval_upper_bound
    #   The upper bound for the difference between the alarm threshold and
    #   the CloudWatch metric. If the metric value is above the breach
    #   threshold, the upper bound is exclusive (the metric must be less
    #   than the threshold plus the upper bound). Otherwise, it is inclusive
    #   (the metric must be less than or equal to the threshold plus the
    #   upper bound). A null value indicates positive infinity.
    #
    #   The upper bound must be greater than the lower bound.
    #   @return [Float]
    #
    # @!attribute [rw] scaling_adjustment
    #   The amount by which to scale, based on the specified adjustment
    #   type. A positive value adds to the current scalable dimension while
    #   a negative number removes from the current scalable dimension.
    #   @return [Integer]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/StepAdjustment AWS API Documentation
    #
    class StepAdjustment < Struct.new(
      :metric_interval_lower_bound,
      :metric_interval_upper_bound,
      :scaling_adjustment)
      include Aws::Structure
    end

    # Represents a step scaling policy configuration.
    #
    # @note When making an API call, you may pass StepScalingPolicyConfiguration
    #   data as a hash:
    #
    #       {
    #         adjustment_type: "ChangeInCapacity", # accepts ChangeInCapacity, PercentChangeInCapacity, ExactCapacity
    #         step_adjustments: [
    #           {
    #             metric_interval_lower_bound: 1.0,
    #             metric_interval_upper_bound: 1.0,
    #             scaling_adjustment: 1, # required
    #           },
    #         ],
    #         min_adjustment_magnitude: 1,
    #         cooldown: 1,
    #         metric_aggregation_type: "Average", # accepts Average, Minimum, Maximum
    #       }
    #
    # @!attribute [rw] adjustment_type
    #   The adjustment type, which specifies how the `ScalingAdjustment`
    #   parameter in a StepAdjustment is interpreted.
    #   @return [String]
    #
    # @!attribute [rw] step_adjustments
    #   A set of adjustments that enable you to scale based on the size of
    #   the alarm breach.
    #   @return [Array<Types::StepAdjustment>]
    #
    # @!attribute [rw] min_adjustment_magnitude
    #   The minimum number to adjust your scalable dimension as a result of
    #   a scaling activity. If the adjustment type is
    #   `PercentChangeInCapacity`, the scaling policy changes the scalable
    #   dimension of the scalable target by this amount.
    #   @return [Integer]
    #
    # @!attribute [rw] cooldown
    #   The amount of time, in seconds, after a scaling activity completes
    #   where previous trigger-related scaling activities can influence
    #   future scaling events.
    #
    #   For scale out policies, while `Cooldown` is in effect, the capacity
    #   that has been added by the previous scale out event that initiated
    #   the `Cooldown` is calculated as part of the desired capacity for the
    #   next scale out. The intention is to continuously (but not
    #   excessively) scale out. For example, an alarm triggers a step
    #   scaling policy to scale out an Amazon ECS service by 2 tasks, the
    #   scaling activity completes successfully, and a `Cooldown` period of
    #   5 minutes starts. During the `Cooldown` period, if the alarm
    #   triggers the same policy again but at a more aggressive step
    #   adjustment to scale out the service by 3 tasks, the 2 tasks that
    #   were added in the previous scale out event are considered part of
    #   that capacity and only 1 additional task is added to the desired
    #   count.
    #
    #   For scale in policies, the `Cooldown` period is used to block
    #   subsequent scale in requests until it has expired. The intention is
    #   to scale in conservatively to protect your application's
    #   availability. However, if another alarm triggers a scale out policy
    #   during the `Cooldown` period after a scale-in, Application Auto
    #   Scaling scales out your scalable target immediately.
    #   @return [Integer]
    #
    # @!attribute [rw] metric_aggregation_type
    #   The aggregation type for the CloudWatch metrics. Valid values are
    #   `Minimum`, `Maximum`, and `Average`.
    #   @return [String]
    #
    # @see http://docs.aws.amazon.com/goto/WebAPI/application-autoscaling-2016-02-06/StepScalingPolicyConfiguration AWS API Documentation
    #
    class StepScalingPolicyConfiguration < Struct.new(
      :adjustment_type,
      :step_adjustments,
      :min_adjustment_magnitude,
      :cooldown,
      :metric_aggregation_type)
      include Aws::Structure
    end

  end
end