Package software.amazon.awscdk.core

Class CfnWaitConditionHandle

java.lang.Object
software.amazon.jsii.JsiiObject
software.constructs.Construct
software.amazon.awscdk.core.Construct
software.amazon.awscdk.core.CfnElement
software.amazon.awscdk.core.CfnRefElement
software.amazon.awscdk.core.CfnResource
software.amazon.awscdk.core.CfnWaitConditionHandle
All Implemented Interfaces:
IConstruct, IDependable, IInspectable, software.amazon.jsii.JsiiSerializable, software.constructs.IConstruct
@Generated(value="jsii-pacmak/1.84.0 (build 5404dcf)", date="2023-06-19T16:29:54.975Z") @Stability(Stable) public class CfnWaitConditionHandle extends CfnResource implements IInspectable
A CloudFormation AWS::CloudFormation::WaitConditionHandle.

For Amazon EC2 and Auto Scaling resources, we recommend that you use a CreationPolicy attribute instead of wait conditions. Add a CreationPolicy attribute to those resources, and use the cfn-signal helper script to signal when an instance creation process has completed successfully.

For more information, see Deploying applications on Amazon EC2 with AWS CloudFormation .

The AWS::CloudFormation::WaitConditionHandle type has no properties. When you reference the WaitConditionHandle resource by using the Ref function, AWS CloudFormation returns a presigned URL. You pass this URL to applications or scripts that are running on your Amazon EC2 instances to send signals to that URL. An associated AWS::CloudFormation::WaitCondition resource checks the URL for the required number of success signals or for a failure signal.

Anytime you add a WaitCondition resource during a stack update or update a resource with a wait condition, you must associate the wait condition with a new WaitConditionHandle resource. Don't reuse an old wait condition handle that has already been defined in the template. If you reuse a wait condition handle, the wait condition might evaluate old signals from a previous create or update stack command. > Updates aren't supported for this resource.

Example: 

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.core.*;
 CfnWaitConditionHandle cfnWaitConditionHandle = new CfnWaitConditionHandle(this, "MyCfnWaitConditionHandle");

  • 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

    • CfnWaitConditionHandle

      protected CfnWaitConditionHandle(software.amazon.jsii.JsiiObjectRef objRef)

    • CfnWaitConditionHandle

      protected CfnWaitConditionHandle(software.amazon.jsii.JsiiObject.InitializationMode initializationMode)

    • CfnWaitConditionHandle

      @Stability(Stable) public CfnWaitConditionHandle(@NotNull Construct scope, @NotNull String id)
      Create a new AWS::CloudFormation::WaitConditionHandle.

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