aws-cdk-lib.aws_applicationautoscaling.CfnScalingPolicy

class CfnScalingPolicy (construct)

LanguageType name
.NETAmazon.CDK.AWS.ApplicationAutoScaling.CfnScalingPolicy
Gogithub.com/aws/aws-cdk-go/awscdk/v2/awsapplicationautoscaling#CfnScalingPolicy
Javasoftware.amazon.awscdk.services.applicationautoscaling.CfnScalingPolicy
Pythonaws_cdk.aws_applicationautoscaling.CfnScalingPolicy
TypeScript aws-cdk-lib » aws_applicationautoscaling » CfnScalingPolicy

Implements IConstruct, IDependable, IInspectable

A CloudFormation AWS::ApplicationAutoScaling::ScalingPolicy.

The AWS::ApplicationAutoScaling::ScalingPolicy resource defines a scaling policy that Application Auto Scaling uses to adjust the capacity of a scalable target.

For more information, see Target tracking scaling policies and Step scaling policies in the Application 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 { aws_applicationautoscaling as appscaling } from 'aws-cdk-lib';
const cfnScalingPolicy = new appscaling.CfnScalingPolicy(this, 'MyCfnScalingPolicy', {
  policyName: 'policyName',
  policyType: 'policyType',

  // the properties below are optional
  resourceId: 'resourceId',
  scalableDimension: 'scalableDimension',
  scalingTargetId: 'scalingTargetId',
  serviceNamespace: 'serviceNamespace',
  stepScalingPolicyConfiguration: {
    adjustmentType: 'adjustmentType',
    cooldown: 123,
    metricAggregationType: 'metricAggregationType',
    minAdjustmentMagnitude: 123,
    stepAdjustments: [{
      scalingAdjustment: 123,

      // the properties below are optional
      metricIntervalLowerBound: 123,
      metricIntervalUpperBound: 123,
    }],
  },
  targetTrackingScalingPolicyConfiguration: {
    targetValue: 123,

    // the properties below are optional
    customizedMetricSpecification: {
      metricName: 'metricName',
      namespace: 'namespace',
      statistic: 'statistic',

      // the properties below are optional
      dimensions: [{
        name: 'name',
        value: 'value',
      }],
      unit: 'unit',
    },
    disableScaleIn: false,
    predefinedMetricSpecification: {
      predefinedMetricType: 'predefinedMetricType',

      // the properties below are optional
      resourceLabel: 'resourceLabel',
    },
    scaleInCooldown: 123,
    scaleOutCooldown: 123,
  },
});

Initializer

new CfnScalingPolicy(scope: Construct, id: string, props: CfnScalingPolicyProps)

Parameters

  • scope Construct — - scope in which this resource is defined.
  • id string — - scoped id of the resource.
  • props CfnScalingPolicyProps — - resource properties.

Create a new AWS::ApplicationAutoScaling::ScalingPolicy.

Construct Props

NameTypeDescription
policyNamestringThe name of the scaling policy.
policyTypestringThe scaling policy type.
resourceId?stringThe identifier of the resource associated with the scaling policy.
scalableDimension?stringThe scalable dimension. This string consists of the service namespace, resource type, and scaling property.
scalingTargetId?stringThe CloudFormation-generated ID of an Application Auto Scaling scalable target.
serviceNamespace?stringThe namespace of the AWS service that provides the resource, or a custom-resource .
stepScalingPolicyConfiguration?IResolvable | StepScalingPolicyConfigurationPropertyA step scaling policy.
targetTrackingScalingPolicyConfiguration?IResolvable | TargetTrackingScalingPolicyConfigurationPropertyA target tracking scaling policy.

policyName

Type: string

The name of the scaling policy.

Updates to the name of a target tracking scaling policy are not supported, unless you also update the metric used for scaling. To change only a target tracking scaling policy's name, first delete the policy by removing the existing AWS::ApplicationAutoScaling::ScalingPolicy resource from the template and updating the stack. Then, recreate the resource with the same settings and a different name.


policyType

Type: string

The scaling policy type.

The following policy types are supported:

TargetTrackingScaling —Not supported for Amazon EMR

StepScaling —Not supported for DynamoDB, Amazon Comprehend, Lambda, Amazon Keyspaces, Amazon MSK, Amazon ElastiCache, or Neptune.


resourceId?

Type: string (optional)

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 - 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 .
  • DynamoDB table - The resource type is table and the unique identifier is the table name. Example: table/my-table .
  • DynamoDB global secondary index - The resource type is index and the unique identifier is the index name. Example: table/my-table/index/my-table-index .
  • Aurora DB cluster - The resource type is cluster and the unique identifier is the cluster name. Example: cluster:my-db-cluster .
  • SageMaker endpoint variant - The resource type is variant and the unique identifier is the resource ID. Example: endpoint/my-end-point/variant/KMeansClustering .
  • Custom resources are not supported with a resource type. This parameter must specify the OutputValue from the CloudFormation template stack used to access the resources. The unique identifier is defined by the service provider. More information is available in our GitHub repository .
  • Amazon Comprehend document classification endpoint - The resource type and unique identifier are specified using the endpoint ARN. Example: arn:aws:comprehend:us-west-2:123456789012:document-classifier-endpoint/EXAMPLE .
  • Amazon Comprehend entity recognizer endpoint - The resource type and unique identifier are specified using the endpoint ARN. Example: arn:aws:comprehend:us-west-2:123456789012:entity-recognizer-endpoint/EXAMPLE .
  • Lambda provisioned concurrency - The resource type is function and the unique identifier is the function name with a function version or alias name suffix that is not $LATEST . Example: function:my-function:prod or function:my-function:1 .
  • Amazon Keyspaces table - The resource type is table and the unique identifier is the table name. Example: keyspace/mykeyspace/table/mytable .
  • Amazon MSK cluster - The resource type and unique identifier are specified using the cluster ARN. Example: arn:aws:kafka:us-east-1:123456789012:cluster/demo-cluster-1/6357e0b2-0e6a-4b86-a0b4-70df934c2e31-5 .
  • Amazon ElastiCache replication group - The resource type is replication-group and the unique identifier is the replication group name. Example: replication-group/mycluster .
  • Neptune cluster - The resource type is cluster and the unique identifier is the cluster name. Example: cluster:mycluster .
  • SageMaker Serverless endpoint - The resource type is variant and the unique identifier is the resource ID. Example: endpoint/my-end-point/variant/KMeansClustering .

scalableDimension?

Type: string (optional)

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.
  • elasticmapreduce:instancegroup:InstanceCount - The instance count of an EMR Instance Group.
  • ec2:spot-fleet-request:TargetCapacity - The target capacity of a Spot Fleet.
  • appstream:fleet:DesiredCapacity - The desired capacity of an AppStream 2.0 fleet.
  • dynamodb:table:ReadCapacityUnits - The provisioned read capacity for a DynamoDB table.
  • dynamodb:table:WriteCapacityUnits - The provisioned write capacity for a DynamoDB table.
  • dynamodb:index:ReadCapacityUnits - The provisioned read capacity for a DynamoDB global secondary index.
  • dynamodb:index:WriteCapacityUnits - The provisioned write capacity for a DynamoDB global secondary index.
  • rds:cluster:ReadReplicaCount - The count of Aurora Replicas in an Aurora DB cluster. Available for Aurora MySQL-compatible edition and Aurora PostgreSQL-compatible edition.
  • sagemaker:variant:DesiredInstanceCount - The number of EC2 instances for a SageMaker model endpoint variant.
  • custom-resource:ResourceType:Property - The scalable dimension for a custom resource provided by your own application or service.
  • comprehend:document-classifier-endpoint:DesiredInferenceUnits - The number of inference units for an Amazon Comprehend document classification endpoint.
  • comprehend:entity-recognizer-endpoint:DesiredInferenceUnits - The number of inference units for an Amazon Comprehend entity recognizer endpoint.
  • lambda:function:ProvisionedConcurrency - The provisioned concurrency for a Lambda function.
  • cassandra:table:ReadCapacityUnits - The provisioned read capacity for an Amazon Keyspaces table.
  • cassandra:table:WriteCapacityUnits - The provisioned write capacity for an Amazon Keyspaces table.
  • kafka:broker-storage:VolumeSize - The provisioned volume size (in GiB) for brokers in an Amazon MSK cluster.
  • elasticache:replication-group:NodeGroups - The number of node groups for an Amazon ElastiCache replication group.
  • elasticache:replication-group:Replicas - The number of replicas per node group for an Amazon ElastiCache replication group.
  • neptune:cluster:ReadReplicaCount - The count of read replicas in an Amazon Neptune DB cluster.
  • sagemaker:variant:DesiredProvisionedConcurrency - The provisioned concurrency for a SageMaker Serverless endpoint.

scalingTargetId?

Type: string (optional)

The CloudFormation-generated ID of an Application Auto Scaling scalable target.

For more information about the ID, see the Return Value section of the AWS::ApplicationAutoScaling::ScalableTarget resource.

You must specify either the ScalingTargetId property, or the ResourceId , ScalableDimension , and ServiceNamespace properties, but not both.


serviceNamespace?

Type: string (optional)

The namespace of the AWS service that provides the resource, or a custom-resource .


stepScalingPolicyConfiguration?

Type: IResolvable | StepScalingPolicyConfigurationProperty (optional)

A step scaling policy.


targetTrackingScalingPolicyConfiguration?

Type: IResolvable | TargetTrackingScalingPolicyConfigurationProperty (optional)

A target tracking scaling policy.

Properties

NameTypeDescription
cfnOptionsICfnResourceOptionsOptions for this resource, such as condition, update policy etc.
cfnProperties{ [string]: any }
cfnResourceTypestringAWS resource type.
creationStackstring[]
logicalIdstringThe logical ID for this CloudFormation stack element.
nodeNodeThe tree node.
policyNamestringThe name of the scaling policy.
policyTypestringThe scaling policy type.
refstringReturn a string that will be resolved to a CloudFormation { Ref } for this element.
stackStackThe stack in which this element is defined.
resourceId?stringThe identifier of the resource associated with the scaling policy.
scalableDimension?stringThe scalable dimension. This string consists of the service namespace, resource type, and scaling property.
scalingTargetId?stringThe CloudFormation-generated ID of an Application Auto Scaling scalable target.
serviceNamespace?stringThe namespace of the AWS service that provides the resource, or a custom-resource .
stepScalingPolicyConfiguration?IResolvable | StepScalingPolicyConfigurationPropertyA step scaling policy.
targetTrackingScalingPolicyConfiguration?IResolvable | TargetTrackingScalingPolicyConfigurationPropertyA target tracking scaling policy.
static CFN_RESOURCE_TYPE_NAMEstringThe CloudFormation resource type name for this resource class.

cfnOptions

Type: ICfnResourceOptions

Options for this resource, such as condition, update policy etc.


cfnProperties

Type: { [string]: any }


cfnResourceType

Type: string

AWS resource type.


creationStack

Type: string[]


logicalId

Type: string

The logical ID for this CloudFormation stack element.

The logical ID of the element is calculated from the path of the resource node in the construct tree.

To override this value, use overrideLogicalId(newLogicalId).


node

Type: Node

The tree node.


policyName

Type: string

The name of the scaling policy.

Updates to the name of a target tracking scaling policy are not supported, unless you also update the metric used for scaling. To change only a target tracking scaling policy's name, first delete the policy by removing the existing AWS::ApplicationAutoScaling::ScalingPolicy resource from the template and updating the stack. Then, recreate the resource with the same settings and a different name.


policyType

Type: string

The scaling policy type.

The following policy types are supported:

TargetTrackingScaling —Not supported for Amazon EMR

StepScaling —Not supported for DynamoDB, Amazon Comprehend, Lambda, Amazon Keyspaces, Amazon MSK, Amazon ElastiCache, or Neptune.


ref

Type: string

Return a string that will be resolved to a CloudFormation { Ref } for this element.

If, by any chance, the intrinsic reference of a resource is not a string, you could coerce it to an IResolvable through Lazy.any({ produce: resource.ref }).


stack

Type: Stack

The stack in which this element is defined.

CfnElements must be defined within a stack scope (directly or indirectly).


resourceId?

Type: string (optional)

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 - 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 .
  • DynamoDB table - The resource type is table and the unique identifier is the table name. Example: table/my-table .
  • DynamoDB global secondary index - The resource type is index and the unique identifier is the index name. Example: table/my-table/index/my-table-index .
  • Aurora DB cluster - The resource type is cluster and the unique identifier is the cluster name. Example: cluster:my-db-cluster .
  • SageMaker endpoint variant - The resource type is variant and the unique identifier is the resource ID. Example: endpoint/my-end-point/variant/KMeansClustering .
  • Custom resources are not supported with a resource type. This parameter must specify the OutputValue from the CloudFormation template stack used to access the resources. The unique identifier is defined by the service provider. More information is available in our GitHub repository .
  • Amazon Comprehend document classification endpoint - The resource type and unique identifier are specified using the endpoint ARN. Example: arn:aws:comprehend:us-west-2:123456789012:document-classifier-endpoint/EXAMPLE .
  • Amazon Comprehend entity recognizer endpoint - The resource type and unique identifier are specified using the endpoint ARN. Example: arn:aws:comprehend:us-west-2:123456789012:entity-recognizer-endpoint/EXAMPLE .
  • Lambda provisioned concurrency - The resource type is function and the unique identifier is the function name with a function version or alias name suffix that is not $LATEST . Example: function:my-function:prod or function:my-function:1 .
  • Amazon Keyspaces table - The resource type is table and the unique identifier is the table name. Example: keyspace/mykeyspace/table/mytable .
  • Amazon MSK cluster - The resource type and unique identifier are specified using the cluster ARN. Example: arn:aws:kafka:us-east-1:123456789012:cluster/demo-cluster-1/6357e0b2-0e6a-4b86-a0b4-70df934c2e31-5 .
  • Amazon ElastiCache replication group - The resource type is replication-group and the unique identifier is the replication group name. Example: replication-group/mycluster .
  • Neptune cluster - The resource type is cluster and the unique identifier is the cluster name. Example: cluster:mycluster .
  • SageMaker Serverless endpoint - The resource type is variant and the unique identifier is the resource ID. Example: endpoint/my-end-point/variant/KMeansClustering .

scalableDimension?

Type: string (optional)

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.
  • elasticmapreduce:instancegroup:InstanceCount - The instance count of an EMR Instance Group.
  • ec2:spot-fleet-request:TargetCapacity - The target capacity of a Spot Fleet.
  • appstream:fleet:DesiredCapacity - The desired capacity of an AppStream 2.0 fleet.
  • dynamodb:table:ReadCapacityUnits - The provisioned read capacity for a DynamoDB table.
  • dynamodb:table:WriteCapacityUnits - The provisioned write capacity for a DynamoDB table.
  • dynamodb:index:ReadCapacityUnits - The provisioned read capacity for a DynamoDB global secondary index.
  • dynamodb:index:WriteCapacityUnits - The provisioned write capacity for a DynamoDB global secondary index.
  • rds:cluster:ReadReplicaCount - The count of Aurora Replicas in an Aurora DB cluster. Available for Aurora MySQL-compatible edition and Aurora PostgreSQL-compatible edition.
  • sagemaker:variant:DesiredInstanceCount - The number of EC2 instances for a SageMaker model endpoint variant.
  • custom-resource:ResourceType:Property - The scalable dimension for a custom resource provided by your own application or service.
  • comprehend:document-classifier-endpoint:DesiredInferenceUnits - The number of inference units for an Amazon Comprehend document classification endpoint.
  • comprehend:entity-recognizer-endpoint:DesiredInferenceUnits - The number of inference units for an Amazon Comprehend entity recognizer endpoint.
  • lambda:function:ProvisionedConcurrency - The provisioned concurrency for a Lambda function.
  • cassandra:table:ReadCapacityUnits - The provisioned read capacity for an Amazon Keyspaces table.
  • cassandra:table:WriteCapacityUnits - The provisioned write capacity for an Amazon Keyspaces table.
  • kafka:broker-storage:VolumeSize - The provisioned volume size (in GiB) for brokers in an Amazon MSK cluster.
  • elasticache:replication-group:NodeGroups - The number of node groups for an Amazon ElastiCache replication group.
  • elasticache:replication-group:Replicas - The number of replicas per node group for an Amazon ElastiCache replication group.
  • neptune:cluster:ReadReplicaCount - The count of read replicas in an Amazon Neptune DB cluster.
  • sagemaker:variant:DesiredProvisionedConcurrency - The provisioned concurrency for a SageMaker Serverless endpoint.

scalingTargetId?

Type: string (optional)

The CloudFormation-generated ID of an Application Auto Scaling scalable target.

For more information about the ID, see the Return Value section of the AWS::ApplicationAutoScaling::ScalableTarget resource.

You must specify either the ScalingTargetId property, or the ResourceId , ScalableDimension , and ServiceNamespace properties, but not both.


serviceNamespace?

Type: string (optional)

The namespace of the AWS service that provides the resource, or a custom-resource .


stepScalingPolicyConfiguration?

Type: IResolvable | StepScalingPolicyConfigurationProperty (optional)

A step scaling policy.


targetTrackingScalingPolicyConfiguration?

Type: IResolvable | TargetTrackingScalingPolicyConfigurationProperty (optional)

A target tracking scaling policy.


static CFN_RESOURCE_TYPE_NAME

Type: string

The CloudFormation resource type name for this resource class.

Methods

NameDescription
addDeletionOverride(path)Syntactic sugar for addOverride(path, undefined).
addDependency(target)Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
addDependsOn(target)⚠️Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.
addMetadata(key, value)Add a value to the CloudFormation Resource Metadata.
addOverride(path, value)Adds an override to the synthesized CloudFormation resource.
addPropertyDeletionOverride(propertyPath)Adds an override that deletes the value of a property from the resource definition.
addPropertyOverride(propertyPath, value)Adds an override to a resource property.
applyRemovalPolicy(policy?, options?)Sets the deletion policy of the resource based on the removal policy specified.
getAtt(attributeName, typeHint?)Returns a token for an runtime attribute of this resource.
getMetadata(key)Retrieve a value value from the CloudFormation Resource Metadata.
inspect(inspector)Examines the CloudFormation resource and discloses attributes.
obtainDependencies()Retrieves an array of resources this resource depends on.
obtainResourceDependencies()Get a shallow copy of dependencies between this resource and other resources in the same stack.
overrideLogicalId(newLogicalId)Overrides the auto-generated logical ID with a specific ID.
removeDependency(target)Indicates that this resource no longer depends on another resource.
replaceDependency(target, newTarget)Replaces one dependency with another.
toString()Returns a string representation of this construct.
protected renderProperties(props)

addDeletionOverride(path)

public addDeletionOverride(path: string): void

Parameters

  • path string — The path of the value to delete.

Syntactic sugar for addOverride(path, undefined).


addDependency(target)

public addDependency(target: CfnResource): void

Parameters

  • target CfnResource

Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

This can be used for resources across stacks (or nested stack) boundaries and the dependency will automatically be transferred to the relevant scope.


addDependsOn(target)⚠️

public addDependsOn(target: CfnResource): void

⚠️ Deprecated: use addDependency

Parameters

  • target CfnResource

Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.


addMetadata(key, value)

public addMetadata(key: string, value: any): void

Parameters

  • key string
  • value any

Add a value to the CloudFormation Resource Metadata.

See also: [https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.)


addOverride(path, value)

public addOverride(path: string, value: any): void

Parameters

  • path string — - The path of the property, you can use dot notation to override values in complex types.
  • value any — - The value.

Adds an override to the synthesized CloudFormation resource.

To add a property override, either use addPropertyOverride or prefix path with "Properties." (i.e. Properties.TopicName).

If the override is nested, separate each nested level using a dot (.) in the path parameter. If there is an array as part of the nesting, specify the index in the path.

To include a literal . in the property name, prefix with a \. In most programming languages you will need to write this as "\\." because the \ itself will need to be escaped.

For example,

cfnResource.addOverride('Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes', ['myattribute']);
cfnResource.addOverride('Properties.GlobalSecondaryIndexes.1.ProjectionType', 'INCLUDE');

would add the overrides

"Properties": {
  "GlobalSecondaryIndexes": [
    {
      "Projection": {
        "NonKeyAttributes": [ "myattribute" ]
        ...
      }
      ...
    },
    {
      "ProjectionType": "INCLUDE"
      ...
    },
  ]
  ...
}

The value argument to addOverride will not be processed or translated in any way. Pass raw JSON values in here with the correct capitalization for CloudFormation. If you pass CDK classes or structs, they will be rendered with lowercased key names, and CloudFormation will reject the template.


addPropertyDeletionOverride(propertyPath)

public addPropertyDeletionOverride(propertyPath: string): void

Parameters

  • propertyPath string — The path to the property.

Adds an override that deletes the value of a property from the resource definition.


addPropertyOverride(propertyPath, value)

public addPropertyOverride(propertyPath: string, value: any): void

Parameters

  • propertyPath string — The path of the property.
  • value any — The value.

Adds an override to a resource property.

Syntactic sugar for addOverride("Properties.<...>", value).


applyRemovalPolicy(policy?, options?)

public applyRemovalPolicy(policy?: RemovalPolicy, options?: RemovalPolicyOptions): void

Parameters

  • policy RemovalPolicy
  • options RemovalPolicyOptions

Sets the deletion policy of the resource based on the removal policy specified.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you've removed it from the CDK application or because you've made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN). In some cases, a snapshot can be taken of the resource prior to deletion (RemovalPolicy.SNAPSHOT). A list of resources that support this policy can be found in the following link:

See also: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-deletionpolicy.html#aws-attribute-deletionpolicy-options


getAtt(attributeName, typeHint?)

public getAtt(attributeName: string, typeHint?: ResolutionTypeHint): Reference

Parameters

  • attributeName string — The name of the attribute.
  • typeHint ResolutionTypeHint

Returns

  • Reference

Returns a token for an runtime attribute of this resource.

Ideally, use generated attribute accessors (e.g. resource.arn), but this can be used for future compatibility in case there is no generated attribute.


getMetadata(key)

public getMetadata(key: string): any

Parameters

  • key string

Returns

  • any

Retrieve a value value from the CloudFormation Resource Metadata.

See also: [https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.)


inspect(inspector)

public inspect(inspector: TreeInspector): void

Parameters

  • inspector TreeInspector — - tree inspector to collect and process attributes.

Examines the CloudFormation resource and discloses attributes.


obtainDependencies()

public obtainDependencies(): Stack &#124; CfnResource[]

Returns

  • Stack | CfnResource[]

Retrieves an array of resources this resource depends on.

This assembles dependencies on resources across stacks (including nested stacks) automatically.


obtainResourceDependencies()

public obtainResourceDependencies(): CfnResource[]

Returns

  • CfnResource[]

Get a shallow copy of dependencies between this resource and other resources in the same stack.


overrideLogicalId(newLogicalId)

public overrideLogicalId(newLogicalId: string): void

Parameters

  • newLogicalId string — The new logical ID to use for this stack element.

Overrides the auto-generated logical ID with a specific ID.


removeDependency(target)

public removeDependency(target: CfnResource): void

Parameters

  • target CfnResource

Indicates that this resource no longer depends on another resource.

This can be used for resources across stacks (including nested stacks) and the dependency will automatically be removed from the relevant scope.


replaceDependency(target, newTarget)

public replaceDependency(target: CfnResource, newTarget: CfnResource): void

Parameters

  • target CfnResource — The dependency to replace.
  • newTarget CfnResource — The new dependency to add.

Replaces one dependency with another.


toString()

public toString(): string

Returns

  • string

Returns a string representation of this construct.


protected renderProperties(props)

protected renderProperties(props: { [string]: any }): { [string]: any }

Parameters

  • props { [string]: any }

Returns

  • { [string]: any }