class CfnParameter (construct)

Language	Type name
.NET	`Amazon.CDK.AWS.SSM.CfnParameter`
Java	`software.amazon.awscdk.services.ssm.CfnParameter`
Python	`aws_cdk.aws_ssm.CfnParameter`
TypeScript	`@aws-cdk/aws-ssm` » `CfnParameter`

Implements IConstruct, IConstruct, IDependable, IInspectable

A CloudFormation AWS::SSM::Parameter.

The AWS::SSM::Parameter resource creates an SSM parameter in AWS Systems Manager Parameter Store.

To create an SSM parameter, you must have the AWS Identity and Access Management ( IAM ) permissions ssm:PutParameter and ssm:AddTagsToResource . On stack creation, AWS CloudFormation adds the following three tags to the parameter: aws:cloudformation:stack-name , aws:cloudformation:logical-id , and aws:cloudformation:stack-id , in addition to any custom tags you specify.

To add, update, or remove tags during stack update, you must have IAM permissions for both ssm:AddTagsToResource and ssm:RemoveTagsFromResource . For more information, see Managing Access Using Policies in the AWS Systems Manager User Guide .

For information about valid values for parameters, see Requirements and Constraints for Parameter Names in the AWS Systems Manager User Guide and PutParameter in the AWS Systems Manager API Reference .

Example

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as ssm from '@aws-cdk/aws-ssm';

declare const tags: any;
const cfnParameter = new ssm.CfnParameter(this, 'MyCfnParameter', {
  type: 'type',
  value: 'value',

  // the properties below are optional
  allowedPattern: 'allowedPattern',
  dataType: 'dataType',
  description: 'description',
  name: 'name',
  policies: 'policies',
  tags: tags,
  tier: 'tier',
});

Initializer

new CfnParameter(scope: Construct, id: string, props: CfnParameterProps)

Parameters

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

Create a new AWS::SSM::Parameter.

Construct Props

Name	Type	Description
type	`string`	The type of parameter.
value	`string`	The parameter value.
allowedPattern?	`string`	A regular expression used to validate the parameter value.
dataType?	`string`	The data type of the parameter, such as `text` or `aws:ec2:image` .
description?	`string`	Information about the parameter.
name?	`string`	The name of the parameter.
policies?	`string`	Information about the policies assigned to a parameter.
tags?	`any`	Optional metadata that you assign to a resource in the form of an arbitrary set of tags (key-value pairs).
tier?	`string`	The parameter tier.

type

Type: string

The type of parameter.

AWS CloudFormation doesn't support creating a SecureString parameter type.

Allowed Values : String | StringList

value

Type: string

The parameter value.

If type is StringList , the system returns a comma-separated string with no spaces between commas in the Value field.

allowedPattern?

Type: string (optional)

A regular expression used to validate the parameter value.

For example, for String types with values restricted to numbers, you can specify the following: AllowedPattern=^\d+$

dataType?

Type: string (optional)

The data type of the parameter, such as text or aws:ec2:image .

The default is text .

description?

Type: string (optional)

Information about the parameter.

name?

Type: string (optional)

The name of the parameter.

The maximum length constraint listed below includes capacity for additional system attributes that aren't part of the name. The maximum length for a parameter name, including the full length of the parameter ARN, is 1011 characters. For example, the length of the following parameter name is 65 characters, not 20 characters: arn:aws:ssm:us-east-2:111222333444:parameter/ExampleParameterName

policies?

Type: string (optional)

Information about the policies assigned to a parameter.

Assigning parameter policies in the AWS Systems Manager User Guide .

tags?

Type: any (optional)

Optional metadata that you assign to a resource in the form of an arbitrary set of tags (key-value pairs).

Tags enable you to categorize a resource in different ways, such as by purpose, owner, or environment. For example, you might want to tag a Systems Manager parameter to identify the type of resource to which it applies, the environment, or the type of configuration data referenced by the parameter.

tier?

Type: string (optional)

The parameter tier.

Properties

Name	Type	Description
attrType	`string`	Returns the type of the parameter.
attrValue	`string`	Returns the value of the parameter.
cfnOptions	`ICfnResourceOptions`	Options for this resource, such as condition, update policy etc.
cfnProperties	`{ [string]: any }`
cfnResourceType	`string`	AWS resource type.
creationStack	`string[]`
logicalId	`string`	The logical ID for this CloudFormation stack element.
node	`ConstructNode`	The construct tree node associated with this construct.
ref	`string`	Return a string that will be resolved to a CloudFormation `{ Ref }` for this element.
stack	`Stack`	The stack in which this element is defined.
tags	`TagManager`	Optional metadata that you assign to a resource in the form of an arbitrary set of tags (key-value pairs).
type	`string`	The type of parameter.
value	`string`	The parameter value.
allowedPattern?	`string`	A regular expression used to validate the parameter value.
dataType?	`string`	The data type of the parameter, such as `text` or `aws:ec2:image` .
description?	`string`	Information about the parameter.
name?	`string`	The name of the parameter.
policies?	`string`	Information about the policies assigned to a parameter.
tier?	`string`	The parameter tier.
static CFN_RESOURCE_TYPE_NAME	`string`	The CloudFormation resource type name for this resource class.

attrType

Type: string

Returns the type of the parameter.

Valid values are String or StringList .

attrValue

Type: string

Returns the value of the parameter.

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: ConstructNode

The construct tree node associated with this construct.

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).

type

Type: string

The type of parameter.

AWS CloudFormation doesn't support creating a SecureString parameter type.

Allowed Values : String | StringList

value

Type: string

The parameter value.

If type is StringList , the system returns a comma-separated string with no spaces between commas in the Value field.

allowedPattern?

Type: string (optional)

A regular expression used to validate the parameter value.

For example, for String types with values restricted to numbers, you can specify the following: AllowedPattern=^\d+$

dataType?

Type: string (optional)

The data type of the parameter, such as text or aws:ec2:image .

The default is text .

description?

Type: string (optional)

Information about the parameter.

name?

Type: string (optional)

The name of the parameter.

The maximum length constraint listed below includes capacity for additional system attributes that aren't part of the name. The maximum length for a parameter name, including the full length of the parameter ARN, is 1011 characters. For example, the length of the following parameter name is 65 characters, not 20 characters: arn:aws:ssm:us-east-2:111222333444:parameter/ExampleParameterName

policies?

Type: string (optional)

Information about the policies assigned to a parameter.

Assigning parameter policies in the AWS Systems Manager User Guide .

tier?

Type: string (optional)

The parameter tier.

static CFN_RESOURCE_TYPE_NAME

Type: string

The CloudFormation resource type name for this resource class.

Methods

Name	Description
addDeletionOverride(path)	Syntactic sugar for `addOverride(path, undefined)`.
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)	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.
overrideLogicalId(newLogicalId)	Overrides the auto-generated logical ID with a specific ID.
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).

addDependsOn(target)

public addDependsOn(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.

addMetadata(key, value)

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

Parameters

key string
value any

Add a value to the CloudFormation Resource Metadata.

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).

getAtt(attributeName)

public getAtt(attributeName: string): Reference

Parameters

attributeName string — The name of the attribute.

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.

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.

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.

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 }