Class CfnScalingPolicy

java.lang.Object
software.amazon.jsii.JsiiObject
All Implemented Interfaces:
IConstruct, IDependable, IInspectable, software.amazon.jsii.JsiiSerializable, software.constructs.IConstruct

@Generated(value="jsii-pacmak/1.84.0 (build 5404dcf)", date="2023-06-19T16:30:45.297Z") @Stability(Stable) public class CfnScalingPolicy extends CfnResource implements IInspectable
A CloudFormation AWS::AutoScaling::ScalingPolicy.

The AWS::AutoScaling::ScalingPolicy resource specifies an Amazon EC2 Auto Scaling scaling policy so that the Auto Scaling group can scale the number of instances available for your application.

For more information about using scaling policies to scale your Auto Scaling group automatically, see Dynamic scaling and Predictive scaling in the Amazon EC2 Auto Scaling User Guide .

Example:

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.services.autoscaling.*;
 CfnScalingPolicy cfnScalingPolicy = CfnScalingPolicy.Builder.create(this, "MyCfnScalingPolicy")
         .autoScalingGroupName("autoScalingGroupName")
         // the properties below are optional
         .adjustmentType("adjustmentType")
         .cooldown("cooldown")
         .estimatedInstanceWarmup(123)
         .metricAggregationType("metricAggregationType")
         .minAdjustmentMagnitude(123)
         .policyType("policyType")
         .predictiveScalingConfiguration(PredictiveScalingConfigurationProperty.builder()
                 .metricSpecifications(List.of(PredictiveScalingMetricSpecificationProperty.builder()
                         .targetValue(123)
                         // the properties below are optional
                         .customizedCapacityMetricSpecification(PredictiveScalingCustomizedCapacityMetricProperty.builder()
                                 .metricDataQueries(List.of(MetricDataQueryProperty.builder()
                                         .id("id")
                                         // the properties below are optional
                                         .expression("expression")
                                         .label("label")
                                         .metricStat(MetricStatProperty.builder()
                                                 .metric(MetricProperty.builder()
                                                         .metricName("metricName")
                                                         .namespace("namespace")
                                                         // the properties below are optional
                                                         .dimensions(List.of(MetricDimensionProperty.builder()
                                                                 .name("name")
                                                                 .value("value")
                                                                 .build()))
                                                         .build())
                                                 .stat("stat")
                                                 // the properties below are optional
                                                 .unit("unit")
                                                 .build())
                                         .returnData(false)
                                         .build()))
                                 .build())
                         .customizedLoadMetricSpecification(PredictiveScalingCustomizedLoadMetricProperty.builder()
                                 .metricDataQueries(List.of(MetricDataQueryProperty.builder()
                                         .id("id")
                                         // the properties below are optional
                                         .expression("expression")
                                         .label("label")
                                         .metricStat(MetricStatProperty.builder()
                                                 .metric(MetricProperty.builder()
                                                         .metricName("metricName")
                                                         .namespace("namespace")
                                                         // the properties below are optional
                                                         .dimensions(List.of(MetricDimensionProperty.builder()
                                                                 .name("name")
                                                                 .value("value")
                                                                 .build()))
                                                         .build())
                                                 .stat("stat")
                                                 // the properties below are optional
                                                 .unit("unit")
                                                 .build())
                                         .returnData(false)
                                         .build()))
                                 .build())
                         .customizedScalingMetricSpecification(PredictiveScalingCustomizedScalingMetricProperty.builder()
                                 .metricDataQueries(List.of(MetricDataQueryProperty.builder()
                                         .id("id")
                                         // the properties below are optional
                                         .expression("expression")
                                         .label("label")
                                         .metricStat(MetricStatProperty.builder()
                                                 .metric(MetricProperty.builder()
                                                         .metricName("metricName")
                                                         .namespace("namespace")
                                                         // the properties below are optional
                                                         .dimensions(List.of(MetricDimensionProperty.builder()
                                                                 .name("name")
                                                                 .value("value")
                                                                 .build()))
                                                         .build())
                                                 .stat("stat")
                                                 // the properties below are optional
                                                 .unit("unit")
                                                 .build())
                                         .returnData(false)
                                         .build()))
                                 .build())
                         .predefinedLoadMetricSpecification(PredictiveScalingPredefinedLoadMetricProperty.builder()
                                 .predefinedMetricType("predefinedMetricType")
                                 // the properties below are optional
                                 .resourceLabel("resourceLabel")
                                 .build())
                         .predefinedMetricPairSpecification(PredictiveScalingPredefinedMetricPairProperty.builder()
                                 .predefinedMetricType("predefinedMetricType")
                                 // the properties below are optional
                                 .resourceLabel("resourceLabel")
                                 .build())
                         .predefinedScalingMetricSpecification(PredictiveScalingPredefinedScalingMetricProperty.builder()
                                 .predefinedMetricType("predefinedMetricType")
                                 // the properties below are optional
                                 .resourceLabel("resourceLabel")
                                 .build())
                         .build()))
                 // the properties below are optional
                 .maxCapacityBreachBehavior("maxCapacityBreachBehavior")
                 .maxCapacityBuffer(123)
                 .mode("mode")
                 .schedulingBufferTime(123)
                 .build())
         .scalingAdjustment(123)
         .stepAdjustments(List.of(StepAdjustmentProperty.builder()
                 .scalingAdjustment(123)
                 // the properties below are optional
                 .metricIntervalLowerBound(123)
                 .metricIntervalUpperBound(123)
                 .build()))
         .targetTrackingConfiguration(TargetTrackingConfigurationProperty.builder()
                 .targetValue(123)
                 // the properties below are optional
                 .customizedMetricSpecification(CustomizedMetricSpecificationProperty.builder()
                         .metricName("metricName")
                         .namespace("namespace")
                         .statistic("statistic")
                         // the properties below are optional
                         .dimensions(List.of(MetricDimensionProperty.builder()
                                 .name("name")
                                 .value("value")
                                 .build()))
                         .unit("unit")
                         .build())
                 .disableScaleIn(false)
                 .predefinedMetricSpecification(PredefinedMetricSpecificationProperty.builder()
                         .predefinedMetricType("predefinedMetricType")
                         // the properties below are optional
                         .resourceLabel("resourceLabel")
                         .build())
                 .build())
         .build();
 
  • Field Details

    • CFN_RESOURCE_TYPE_NAME

      @Stability(Stable) public static final String CFN_RESOURCE_TYPE_NAME
      The CloudFormation resource type name for this resource class.
  • Constructor Details

    • CfnScalingPolicy

      protected CfnScalingPolicy(software.amazon.jsii.JsiiObjectRef objRef)
    • CfnScalingPolicy

      protected CfnScalingPolicy(software.amazon.jsii.JsiiObject.InitializationMode initializationMode)
    • CfnScalingPolicy

      @Stability(Stable) public CfnScalingPolicy(@NotNull Construct scope, @NotNull String id, @NotNull CfnScalingPolicyProps props)
      Create a new AWS::AutoScaling::ScalingPolicy.

      Parameters:
      scope -
      • scope in which this resource is defined.
      This parameter is required.
      id -
      • scoped id of the resource.
      This parameter is required.
      props -
      • resource properties.
      This parameter is required.
  • Method Details

    • inspect

      @Stability(Stable) public void inspect(@NotNull TreeInspector inspector)
      Examines the CloudFormation resource and discloses attributes.

      Specified by:
      inspect in interface IInspectable
      Parameters:
      inspector -
      • tree inspector to collect and process attributes.
      This parameter is required.
    • renderProperties

      @Stability(Stable) @NotNull protected Map<String,Object> renderProperties(@NotNull Map<String,Object> props)
      Overrides:
      renderProperties in class CfnResource
      Parameters:
      props - This parameter is required.
    • getAttrArn

      @Stability(Stable) @NotNull public String getAttrArn()
    • getAttrPolicyName

      @Stability(Stable) @NotNull public String getAttrPolicyName()
      Returns the name of a scaling policy.
    • getCfnProperties

      @Stability(Stable) @NotNull protected Map<String,Object> getCfnProperties()
      Overrides:
      getCfnProperties in class CfnResource
    • getAutoScalingGroupName

      @Stability(Stable) @NotNull public String getAutoScalingGroupName()
      The name of the Auto Scaling group.
    • setAutoScalingGroupName

      @Stability(Stable) public void setAutoScalingGroupName(@NotNull String value)
      The name of the Auto Scaling group.
    • getAdjustmentType

      @Stability(Stable) @Nullable public String getAdjustmentType()
      Specifies how the scaling adjustment is interpreted (for example, an absolute number or a percentage).

      The valid values are ChangeInCapacity , ExactCapacity , and PercentChangeInCapacity .

      Required if the policy type is StepScaling or SimpleScaling . For more information, see Scaling adjustment types in the Amazon EC2 Auto Scaling User Guide .

    • setAdjustmentType

      @Stability(Stable) public void setAdjustmentType(@Nullable String value)
      Specifies how the scaling adjustment is interpreted (for example, an absolute number or a percentage).

      The valid values are ChangeInCapacity , ExactCapacity , and PercentChangeInCapacity .

      Required if the policy type is StepScaling or SimpleScaling . For more information, see Scaling adjustment types in the Amazon EC2 Auto Scaling User Guide .

    • getCooldown

      @Stability(Stable) @Nullable public String getCooldown()
      A cooldown period, in seconds, that applies to a specific simple scaling policy.

      When a cooldown period is specified here, it overrides the default cooldown.

      Valid only if the policy type is SimpleScaling . For more information, see Scaling cooldowns for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide .

      Default: None

    • setCooldown

      @Stability(Stable) public void setCooldown(@Nullable String value)
      A cooldown period, in seconds, that applies to a specific simple scaling policy.

      When a cooldown period is specified here, it overrides the default cooldown.

      Valid only if the policy type is SimpleScaling . For more information, see Scaling cooldowns for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide .

      Default: None

    • getEstimatedInstanceWarmup

      @Stability(Stable) @Nullable public Number getEstimatedInstanceWarmup()
      Not needed if the default instance warmup is defined for the group..

      The estimated time, in seconds, until a newly launched instance can contribute to the CloudWatch metrics. This warm-up period applies to instances launched due to a specific target tracking or step scaling policy. When a warm-up period is specified here, it overrides the default instance warmup.

      Valid only if the policy type is TargetTrackingScaling or StepScaling .

      The default is to use the value for the default instance warmup defined for the group. If default instance warmup is null, then EstimatedInstanceWarmup falls back to the value of default cooldown.

    • setEstimatedInstanceWarmup

      @Stability(Stable) public void setEstimatedInstanceWarmup(@Nullable Number value)
      Not needed if the default instance warmup is defined for the group..

      The estimated time, in seconds, until a newly launched instance can contribute to the CloudWatch metrics. This warm-up period applies to instances launched due to a specific target tracking or step scaling policy. When a warm-up period is specified here, it overrides the default instance warmup.

      Valid only if the policy type is TargetTrackingScaling or StepScaling .

      The default is to use the value for the default instance warmup defined for the group. If default instance warmup is null, then EstimatedInstanceWarmup falls back to the value of default cooldown.

    • getMetricAggregationType

      @Stability(Stable) @Nullable public String getMetricAggregationType()
      The aggregation type for the CloudWatch metrics.

      The valid values are Minimum , Maximum , and Average . If the aggregation type is null, the value is treated as Average .

      Valid only if the policy type is StepScaling .

    • setMetricAggregationType

      @Stability(Stable) public void setMetricAggregationType(@Nullable String value)
      The aggregation type for the CloudWatch metrics.

      The valid values are Minimum , Maximum , and Average . If the aggregation type is null, the value is treated as Average .

      Valid only if the policy type is StepScaling .

    • getMinAdjustmentMagnitude

      @Stability(Stable) @Nullable public Number getMinAdjustmentMagnitude()
      The minimum value to scale by when the adjustment type is PercentChangeInCapacity .

      For example, suppose that you create a step scaling policy to scale out an Auto Scaling group by 25 percent and you specify a MinAdjustmentMagnitude of 2. If the group has 4 instances and the scaling policy is performed, 25 percent of 4 is 1. However, because you specified a MinAdjustmentMagnitude of 2, Amazon EC2 Auto Scaling scales out the group by 2 instances.

      Valid only if the policy type is StepScaling or SimpleScaling . For more information, see Scaling adjustment types in the Amazon EC2 Auto Scaling User Guide .

      Some Auto Scaling groups use instance weights. In this case, set the MinAdjustmentMagnitude to a value that is at least as large as your largest instance weight.

    • setMinAdjustmentMagnitude

      @Stability(Stable) public void setMinAdjustmentMagnitude(@Nullable Number value)
      The minimum value to scale by when the adjustment type is PercentChangeInCapacity .

      For example, suppose that you create a step scaling policy to scale out an Auto Scaling group by 25 percent and you specify a MinAdjustmentMagnitude of 2. If the group has 4 instances and the scaling policy is performed, 25 percent of 4 is 1. However, because you specified a MinAdjustmentMagnitude of 2, Amazon EC2 Auto Scaling scales out the group by 2 instances.

      Valid only if the policy type is StepScaling or SimpleScaling . For more information, see Scaling adjustment types in the Amazon EC2 Auto Scaling User Guide .

      Some Auto Scaling groups use instance weights. In this case, set the MinAdjustmentMagnitude to a value that is at least as large as your largest instance weight.

    • getPolicyType

      @Stability(Stable) @Nullable public String getPolicyType()
      One of the following policy types:.

      • TargetTrackingScaling
      • StepScaling
      • SimpleScaling (default)
      • PredictiveScaling
    • setPolicyType

      @Stability(Stable) public void setPolicyType(@Nullable String value)
      One of the following policy types:.

      • TargetTrackingScaling
      • StepScaling
      • SimpleScaling (default)
      • PredictiveScaling
    • getPredictiveScalingConfiguration

      @Stability(Stable) @Nullable public Object getPredictiveScalingConfiguration()
      A predictive scaling policy. Provides support for predefined and custom metrics.

      Predefined metrics include CPU utilization, network in/out, and the Application Load Balancer request count.

      Required if the policy type is PredictiveScaling .

    • setPredictiveScalingConfiguration

      @Stability(Stable) public void setPredictiveScalingConfiguration(@Nullable IResolvable value)
      A predictive scaling policy. Provides support for predefined and custom metrics.

      Predefined metrics include CPU utilization, network in/out, and the Application Load Balancer request count.

      Required if the policy type is PredictiveScaling .

    • setPredictiveScalingConfiguration

      @Stability(Stable) public void setPredictiveScalingConfiguration(@Nullable CfnScalingPolicy.PredictiveScalingConfigurationProperty value)
      A predictive scaling policy. Provides support for predefined and custom metrics.

      Predefined metrics include CPU utilization, network in/out, and the Application Load Balancer request count.

      Required if the policy type is PredictiveScaling .

    • getScalingAdjustment

      @Stability(Stable) @Nullable public Number getScalingAdjustment()
      The amount by which to scale, based on the specified adjustment type.

      A positive value adds to the current capacity while a negative number removes from the current capacity. For exact capacity, you must specify a non-negative value.

      Required if the policy type is SimpleScaling . (Not used with any other policy type.)

    • setScalingAdjustment

      @Stability(Stable) public void setScalingAdjustment(@Nullable Number value)
      The amount by which to scale, based on the specified adjustment type.

      A positive value adds to the current capacity while a negative number removes from the current capacity. For exact capacity, you must specify a non-negative value.

      Required if the policy type is SimpleScaling . (Not used with any other policy type.)

    • getStepAdjustments

      @Stability(Stable) @Nullable public Object getStepAdjustments()
      A set of adjustments that enable you to scale based on the size of the alarm breach.

      Required if the policy type is StepScaling . (Not used with any other policy type.)

    • setStepAdjustments

      @Stability(Stable) public void setStepAdjustments(@Nullable IResolvable value)
      A set of adjustments that enable you to scale based on the size of the alarm breach.

      Required if the policy type is StepScaling . (Not used with any other policy type.)

    • setStepAdjustments

      @Stability(Stable) public void setStepAdjustments(@Nullable List<Object> value)
      A set of adjustments that enable you to scale based on the size of the alarm breach.

      Required if the policy type is StepScaling . (Not used with any other policy type.)

    • getTargetTrackingConfiguration

      @Stability(Stable) @Nullable public Object getTargetTrackingConfiguration()
      A target tracking scaling policy. Provides support for predefined or custom metrics.

      The following predefined metrics are available:

      • ASGAverageCPUUtilization
      • ASGAverageNetworkIn
      • ASGAverageNetworkOut
      • ALBRequestCountPerTarget

      If you specify ALBRequestCountPerTarget for the metric, you must specify the ResourceLabel property with the PredefinedMetricSpecification .

      Required if the policy type is TargetTrackingScaling .

    • setTargetTrackingConfiguration

      @Stability(Stable) public void setTargetTrackingConfiguration(@Nullable IResolvable value)
      A target tracking scaling policy. Provides support for predefined or custom metrics.

      The following predefined metrics are available:

      • ASGAverageCPUUtilization
      • ASGAverageNetworkIn
      • ASGAverageNetworkOut
      • ALBRequestCountPerTarget

      If you specify ALBRequestCountPerTarget for the metric, you must specify the ResourceLabel property with the PredefinedMetricSpecification .

      Required if the policy type is TargetTrackingScaling .

    • setTargetTrackingConfiguration

      @Stability(Stable) public void setTargetTrackingConfiguration(@Nullable CfnScalingPolicy.TargetTrackingConfigurationProperty value)
      A target tracking scaling policy. Provides support for predefined or custom metrics.

      The following predefined metrics are available:

      • ASGAverageCPUUtilization
      • ASGAverageNetworkIn
      • ASGAverageNetworkOut
      • ALBRequestCountPerTarget

      If you specify ALBRequestCountPerTarget for the metric, you must specify the ResourceLabel property with the PredefinedMetricSpecification .

      Required if the policy type is TargetTrackingScaling .