class CfnServer (construct)
| Language | Type name | 
|---|---|
|  .NET | Amazon.CDK.AWS.Transfer.CfnServer | 
|  Java | software.amazon.awscdk.services.transfer.CfnServer | 
|  Python | aws_cdk.aws_transfer.CfnServer | 
|  TypeScript | @aws-cdk/aws-transfer»CfnServer | 
Implements
IConstruct, IConstruct, IDependable, IInspectable
A CloudFormation AWS::Transfer::Server.
Instantiates an auto-scaling virtual server based on the selected file transfer protocol in AWS . When you make updates to your file transfer protocol-enabled server or when you work with users, use the service-generated ServerId property that is assigned to the newly created server.
Example
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import * as transfer from '@aws-cdk/aws-transfer';
const cfnServer = new transfer.CfnServer(this, 'MyCfnServer', /* all optional props */ {
  certificate: 'certificate',
  domain: 'domain',
  endpointDetails: {
    addressAllocationIds: ['addressAllocationIds'],
    securityGroupIds: ['securityGroupIds'],
    subnetIds: ['subnetIds'],
    vpcEndpointId: 'vpcEndpointId',
    vpcId: 'vpcId',
  },
  endpointType: 'endpointType',
  identityProviderDetails: {
    directoryId: 'directoryId',
    function: 'function',
    invocationRole: 'invocationRole',
    sftpAuthenticationMethods: 'sftpAuthenticationMethods',
    url: 'url',
  },
  identityProviderType: 'identityProviderType',
  loggingRole: 'loggingRole',
  postAuthenticationLoginBanner: 'postAuthenticationLoginBanner',
  preAuthenticationLoginBanner: 'preAuthenticationLoginBanner',
  protocolDetails: {
    as2Transports: ['as2Transports'],
    passiveIp: 'passiveIp',
    setStatOption: 'setStatOption',
    tlsSessionResumptionMode: 'tlsSessionResumptionMode',
  },
  protocols: ['protocols'],
  securityPolicyName: 'securityPolicyName',
  tags: [{
    key: 'key',
    value: 'value',
  }],
  workflowDetails: {
    onPartialUpload: [{
      executionRole: 'executionRole',
      workflowId: 'workflowId',
    }],
    onUpload: [{
      executionRole: 'executionRole',
      workflowId: 'workflowId',
    }],
  },
});
Initializer
new CfnServer(scope: Construct, id: string, props?: CfnServerProps)
Parameters
- scope Construct— - scope in which this resource is defined.
- id string— - scoped id of the resource.
- props Cfn— - resource properties.Server Props 
Create a new AWS::Transfer::Server.
Construct Props
| Name | Type | Description | 
|---|---|---|
| certificate? | string | The Amazon Resource Name (ARN) of the AWS Certificate Manager (ACM) certificate. | 
| domain? | string | Specifies the domain of the storage system that is used for file transfers. | 
| endpoint | IResolvable | Endpoint | The virtual private cloud (VPC) endpoint settings that are configured for your server. | 
| endpoint | string | The type of endpoint that you want your server to use. | 
| identity | IResolvable | Identity | Required when IdentityProviderTypeis set toAWS_DIRECTORY_SERVICE,AWS _LAMBDAorAPI_GATEWAY. | 
| identity | string | The mode of authentication for a server. | 
| logging | string | The Amazon Resource Name (ARN) of the AWS Identity and Access Management (IAM) role that allows a server to turn on Amazon CloudWatch logging for Amazon S3 or Amazon EFSevents. | 
| post | string | Specifies a string to display when users connect to a server. This string is displayed after the user authenticates. | 
| pre | string | Specifies a string to display when users connect to a server. | 
| protocol | IResolvable | Protocol | The protocol settings that are configured for your server. | 
| protocols? | string[] | Specifies the file transfer protocol or protocols over which your file transfer protocol client can connect to your server's endpoint. | 
| security | string | Specifies the name of the security policy that is attached to the server. | 
| tags? | Cfn[] | Key-value pairs that can be used to group and search for servers. | 
| workflow | IResolvable | Workflow | Specifies the workflow ID for the workflow to assign and the execution role that's used for executing the workflow. | 
certificate?
Type:
string
(optional)
The Amazon Resource Name (ARN) of the AWS Certificate Manager (ACM) certificate.
Required when Protocols is set to FTPS .
To request a new public certificate, see Request a public certificate in the AWS Certificate Manager User Guide .
To import an existing certificate into ACM, see Importing certificates into ACM in the AWS Certificate Manager User Guide .
To request a private certificate to use FTPS through private IP addresses, see Request a private certificate in the AWS Certificate Manager User Guide .
Certificates with the following cryptographic algorithms and key sizes are supported:
- 2048-bit RSA (RSA_2048)
- 4096-bit RSA (RSA_4096)
- Elliptic Prime Curve 256 bit (EC_prime256v1)
- Elliptic Prime Curve 384 bit (EC_secp384r1)
- Elliptic Prime Curve 521 bit (EC_secp521r1)
The certificate must be a valid SSL/TLS X.509 version 3 certificate with FQDN or IP address specified and information about the issuer.
domain?
Type:
string
(optional)
Specifies the domain of the storage system that is used for file transfers.
endpointDetails?
Type:
IResolvable | Endpoint
(optional)
The virtual private cloud (VPC) endpoint settings that are configured for your server.
When you host your endpoint within your VPC, you can make your endpoint accessible only to resources within your VPC, or you can attach Elastic IP addresses and make your endpoint accessible to clients over the internet. Your VPC's default security groups are automatically assigned to your endpoint.
endpointType?
Type:
string
(optional)
The type of endpoint that you want your server to use.
You can choose to make your server's endpoint publicly accessible (PUBLIC) or host it inside your VPC. With an endpoint that is hosted in a VPC, you can restrict access to your server and resources only within your VPC or choose to make it internet facing by attaching Elastic IP addresses directly to it.
identityProviderDetails?
Type:
IResolvable | Identity
(optional)
Required when IdentityProviderType is set to AWS_DIRECTORY_SERVICE , AWS _LAMBDA or API_GATEWAY .
Accepts an array containing all of the information required to use a directory in AWS_DIRECTORY_SERVICE or invoke a customer-supplied authentication API, including the API Gateway URL. Not required when IdentityProviderType is set to SERVICE_MANAGED .
identityProviderType?
Type:
string
(optional)
The mode of authentication for a server.
The default value is SERVICE_MANAGED , which allows you to store and access user credentials within the AWS Transfer Family service.
Use AWS_DIRECTORY_SERVICE to provide access to Active Directory groups in AWS Directory Service for Microsoft Active Directory or Microsoft Active Directory in your on-premises environment or in AWS using AD Connector. This option also requires you to provide a Directory ID by using the IdentityProviderDetails parameter.
Use the API_GATEWAY value to integrate with an identity provider of your choosing. The API_GATEWAY setting requires you to provide an Amazon API Gateway endpoint URL to call for authentication by using the IdentityProviderDetails parameter.
Use the AWS_LAMBDA value to directly use an AWS Lambda function as your identity provider. If you choose this value, you must specify the ARN for the Lambda function in the Function parameter for the IdentityProviderDetails data type.
loggingRole?
Type:
string
(optional)
The Amazon Resource Name (ARN) of the AWS Identity and Access Management (IAM) role that allows a server to turn on Amazon CloudWatch logging for Amazon S3 or Amazon EFSevents.
When set, you can view user activity in your CloudWatch logs.
postAuthenticationLoginBanner?
Type:
string
(optional)
Specifies a string to display when users connect to a server. This string is displayed after the user authenticates.
The SFTP protocol does not support post-authentication display banners.
preAuthenticationLoginBanner?
Type:
string
(optional)
Specifies a string to display when users connect to a server.
This string is displayed before the user authenticates. For example, the following banner displays details about using the system:
This system is for the use of authorized users only. Individuals using this computer system without authority, or in excess of their authority, are subject to having all of their activities on this system monitored and recorded by system personnel.
protocolDetails?
Type:
IResolvable | Protocol
(optional)
The protocol settings that are configured for your server.
- To indicate passive mode (for FTP and FTPS protocols), use the PassiveIpparameter. Enter a single dotted-quad IPv4 address, such as the external IP address of a firewall, router, or load balancer.
- To ignore the error that is generated when the client attempts to use the SETSTATcommand on a file that you are uploading to an Amazon S3 bucket, use theSetStatOptionparameter. To have the AWS Transfer Family server ignore theSETSTATcommand and upload files without needing to make any changes to your SFTP client, set the value toENABLE_NO_OP. If you set theSetStatOptionparameter toENABLE_NO_OP, Transfer Family generates a log entry to Amazon CloudWatch Logs, so that you can determine when the client is making aSETSTATcall.
- To determine whether your AWS Transfer Family server resumes recent, negotiated sessions through a unique session ID, use the TlsSessionResumptionModeparameter.
- As2Transportsindicates the transport method for the AS2 messages. Currently, only HTTP is supported.
protocols?
Type:
string[]
(optional)
Specifies the file transfer protocol or protocols over which your file transfer protocol client can connect to your server's endpoint.
The available protocols are:
- SFTP(Secure Shell (SSH) File Transfer Protocol): File transfer over SSH
- FTPS(File Transfer Protocol Secure): File transfer with TLS encryption
- FTP(File Transfer Protocol): Unencrypted file transfer
- AS2(Applicability Statement 2): used for transporting structured business-to-business data
- If you select
FTPS, you must choose a certificate stored in AWS Certificate Manager (ACM) which is used to identify your server when clients connect to it over FTPS.- If
Protocolincludes eitherFTPorFTPS, then theEndpointTypemust beVPCand theIdentityProviderTypemust be eitherAWS_DIRECTORY_SERVICE,AWS_LAMBDA, orAPI_GATEWAY.- If
ProtocolincludesFTP, thenAddressAllocationIdscannot be associated.- If
Protocolis set only toSFTP, theEndpointTypecan be set toPUBLICand theIdentityProviderTypecan be set any of the supported identity types:SERVICE_MANAGED,AWS_DIRECTORY_SERVICE,AWS_LAMBDA, orAPI_GATEWAY.- If
ProtocolincludesAS2, then theEndpointTypemust beVPC, and domain must be Amazon S3.
securityPolicyName?
Type:
string
(optional)
Specifies the name of the security policy that is attached to the server.
tags?
Type:
Cfn[]
(optional)
Key-value pairs that can be used to group and search for servers.
workflowDetails?
Type:
IResolvable | Workflow
(optional)
Specifies the workflow ID for the workflow to assign and the execution role that's used for executing the workflow.
In addition to a workflow to execute when a file is uploaded completely, WorkflowDetails can also contain a workflow ID (and execution role) for a workflow to execute on partial upload. A partial upload occurs when a file is open when the session disconnects.
Properties
| Name | Type | Description | 
|---|---|---|
| attr | string | The Amazon Resource Name associated with the server, in the form arn:aws:transfer:region: *account-id* :server/ *server-id* /. | 
| attr | string | The service-assigned ID of the server that is created. | 
| cfn | ICfn | Options for this resource, such as condition, update policy etc. | 
| cfn | { [string]: any } | |
| cfn | string | AWS resource type. | 
| creation | string[] | |
| logical | string | The logical ID for this CloudFormation stack element. | 
| node | Construct | 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 | Tag | Key-value pairs that can be used to group and search for servers. | 
| certificate? | string | The Amazon Resource Name (ARN) of the AWS Certificate Manager (ACM) certificate. | 
| domain? | string | Specifies the domain of the storage system that is used for file transfers. | 
| endpoint | IResolvable | Endpoint | The virtual private cloud (VPC) endpoint settings that are configured for your server. | 
| endpoint | string | The type of endpoint that you want your server to use. | 
| identity | IResolvable | Identity | Required when IdentityProviderTypeis set toAWS_DIRECTORY_SERVICE,AWS _LAMBDAorAPI_GATEWAY. | 
| identity | string | The mode of authentication for a server. | 
| logging | string | The Amazon Resource Name (ARN) of the AWS Identity and Access Management (IAM) role that allows a server to turn on Amazon CloudWatch logging for Amazon S3 or Amazon EFSevents. | 
| post | string | Specifies a string to display when users connect to a server. This string is displayed after the user authenticates. | 
| pre | string | Specifies a string to display when users connect to a server. | 
| protocol | IResolvable | Protocol | The protocol settings that are configured for your server. | 
| protocols? | string[] | Specifies the file transfer protocol or protocols over which your file transfer protocol client can connect to your server's endpoint. | 
| security | string | Specifies the name of the security policy that is attached to the server. | 
| workflow | IResolvable | Workflow | Specifies the workflow ID for the workflow to assign and the execution role that's used for executing the workflow. | 
| static CFN_RESOURCE_TYPE_NAME | string | The CloudFormation resource type name for this resource class. | 
attrArn
Type:
string
The Amazon Resource Name associated with the server, in the form arn:aws:transfer:region: *account-id* :server/ *server-id* / .
An example of a server ARN is: arn:aws:transfer:us-east-1:123456789012:server/s-01234567890abcdef .
attrServerId
Type:
string
The service-assigned ID of the server that is created.
An example ServerId is s-01234567890abcdef .
cfnOptions
Type:
ICfn
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:
Construct
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).
tags
Type:
Tag
Key-value pairs that can be used to group and search for servers.
certificate?
Type:
string
(optional)
The Amazon Resource Name (ARN) of the AWS Certificate Manager (ACM) certificate.
Required when Protocols is set to FTPS .
To request a new public certificate, see Request a public certificate in the AWS Certificate Manager User Guide .
To import an existing certificate into ACM, see Importing certificates into ACM in the AWS Certificate Manager User Guide .
To request a private certificate to use FTPS through private IP addresses, see Request a private certificate in the AWS Certificate Manager User Guide .
Certificates with the following cryptographic algorithms and key sizes are supported:
- 2048-bit RSA (RSA_2048)
- 4096-bit RSA (RSA_4096)
- Elliptic Prime Curve 256 bit (EC_prime256v1)
- Elliptic Prime Curve 384 bit (EC_secp384r1)
- Elliptic Prime Curve 521 bit (EC_secp521r1)
The certificate must be a valid SSL/TLS X.509 version 3 certificate with FQDN or IP address specified and information about the issuer.
domain?
Type:
string
(optional)
Specifies the domain of the storage system that is used for file transfers.
endpointDetails?
Type:
IResolvable | Endpoint
(optional)
The virtual private cloud (VPC) endpoint settings that are configured for your server.
When you host your endpoint within your VPC, you can make your endpoint accessible only to resources within your VPC, or you can attach Elastic IP addresses and make your endpoint accessible to clients over the internet. Your VPC's default security groups are automatically assigned to your endpoint.
endpointType?
Type:
string
(optional)
The type of endpoint that you want your server to use.
You can choose to make your server's endpoint publicly accessible (PUBLIC) or host it inside your VPC. With an endpoint that is hosted in a VPC, you can restrict access to your server and resources only within your VPC or choose to make it internet facing by attaching Elastic IP addresses directly to it.
identityProviderDetails?
Type:
IResolvable | Identity
(optional)
Required when IdentityProviderType is set to AWS_DIRECTORY_SERVICE , AWS _LAMBDA or API_GATEWAY .
Accepts an array containing all of the information required to use a directory in AWS_DIRECTORY_SERVICE or invoke a customer-supplied authentication API, including the API Gateway URL. Not required when IdentityProviderType is set to SERVICE_MANAGED .
identityProviderType?
Type:
string
(optional)
The mode of authentication for a server.
The default value is SERVICE_MANAGED , which allows you to store and access user credentials within the AWS Transfer Family service.
Use AWS_DIRECTORY_SERVICE to provide access to Active Directory groups in AWS Directory Service for Microsoft Active Directory or Microsoft Active Directory in your on-premises environment or in AWS using AD Connector. This option also requires you to provide a Directory ID by using the IdentityProviderDetails parameter.
Use the API_GATEWAY value to integrate with an identity provider of your choosing. The API_GATEWAY setting requires you to provide an Amazon API Gateway endpoint URL to call for authentication by using the IdentityProviderDetails parameter.
Use the AWS_LAMBDA value to directly use an AWS Lambda function as your identity provider. If you choose this value, you must specify the ARN for the Lambda function in the Function parameter for the IdentityProviderDetails data type.
loggingRole?
Type:
string
(optional)
The Amazon Resource Name (ARN) of the AWS Identity and Access Management (IAM) role that allows a server to turn on Amazon CloudWatch logging for Amazon S3 or Amazon EFSevents.
When set, you can view user activity in your CloudWatch logs.
postAuthenticationLoginBanner?
Type:
string
(optional)
Specifies a string to display when users connect to a server. This string is displayed after the user authenticates.
The SFTP protocol does not support post-authentication display banners.
preAuthenticationLoginBanner?
Type:
string
(optional)
Specifies a string to display when users connect to a server.
This string is displayed before the user authenticates. For example, the following banner displays details about using the system:
This system is for the use of authorized users only. Individuals using this computer system without authority, or in excess of their authority, are subject to having all of their activities on this system monitored and recorded by system personnel.
protocolDetails?
Type:
IResolvable | Protocol
(optional)
The protocol settings that are configured for your server.
- To indicate passive mode (for FTP and FTPS protocols), use the PassiveIpparameter. Enter a single dotted-quad IPv4 address, such as the external IP address of a firewall, router, or load balancer.
- To ignore the error that is generated when the client attempts to use the SETSTATcommand on a file that you are uploading to an Amazon S3 bucket, use theSetStatOptionparameter. To have the AWS Transfer Family server ignore theSETSTATcommand and upload files without needing to make any changes to your SFTP client, set the value toENABLE_NO_OP. If you set theSetStatOptionparameter toENABLE_NO_OP, Transfer Family generates a log entry to Amazon CloudWatch Logs, so that you can determine when the client is making aSETSTATcall.
- To determine whether your AWS Transfer Family server resumes recent, negotiated sessions through a unique session ID, use the TlsSessionResumptionModeparameter.
- As2Transportsindicates the transport method for the AS2 messages. Currently, only HTTP is supported.
protocols?
Type:
string[]
(optional)
Specifies the file transfer protocol or protocols over which your file transfer protocol client can connect to your server's endpoint.
The available protocols are:
- SFTP(Secure Shell (SSH) File Transfer Protocol): File transfer over SSH
- FTPS(File Transfer Protocol Secure): File transfer with TLS encryption
- FTP(File Transfer Protocol): Unencrypted file transfer
- AS2(Applicability Statement 2): used for transporting structured business-to-business data
- If you select
FTPS, you must choose a certificate stored in AWS Certificate Manager (ACM) which is used to identify your server when clients connect to it over FTPS.- If
Protocolincludes eitherFTPorFTPS, then theEndpointTypemust beVPCand theIdentityProviderTypemust be eitherAWS_DIRECTORY_SERVICE,AWS_LAMBDA, orAPI_GATEWAY.- If
ProtocolincludesFTP, thenAddressAllocationIdscannot be associated.- If
Protocolis set only toSFTP, theEndpointTypecan be set toPUBLICand theIdentityProviderTypecan be set any of the supported identity types:SERVICE_MANAGED,AWS_DIRECTORY_SERVICE,AWS_LAMBDA, orAPI_GATEWAY.- If
ProtocolincludesAS2, then theEndpointTypemust beVPC, and domain must be Amazon S3.
securityPolicyName?
Type:
string
(optional)
Specifies the name of the security policy that is attached to the server.
workflowDetails?
Type:
IResolvable | Workflow
(optional)
Specifies the workflow ID for the workflow to assign and the execution role that's used for executing the workflow.
In addition to a workflow to execute when a file is uploaded completely, WorkflowDetails can also contain a workflow ID (and execution role) for a workflow to execute on partial upload. A partial upload occurs when a file is open when the session disconnects.
static CFN_RESOURCE_TYPE_NAME
Type:
string
The CloudFormation resource type name for this resource class.
Methods
| Name | Description | 
|---|---|
| add | Syntactic sugar for addOverride(path, undefined). | 
| add | Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned. | 
| add | Add a value to the CloudFormation Resource Metadata. | 
| add | Adds an override to the synthesized CloudFormation resource. | 
| add | Adds an override that deletes the value of a property from the resource definition. | 
| add | Adds an override to a resource property. | 
| apply | Sets the deletion policy of the resource based on the removal policy specified. | 
| get | Returns a token for an runtime attribute of this resource. | 
| get | Retrieve a value value from the CloudFormation Resource Metadata. | 
| inspect(inspector) | Examines the CloudFormation resource and discloses attributes. | 
| override | Overrides the auto-generated logical ID with a specific ID. | 
| to | Returns a string representation of this construct. | 
| protected render | 
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 RemovalPolicy Options 
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
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.](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 Tree— - tree inspector to collect and process attributes.Inspector 
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 }
