AWS CloudFormation
User Guide (API Version 2010-05-15)
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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.


If you update a stack and add a WaitCondition resource, you must create a new WaitConditionHandle resource for that WaitCondition resource. Do not reuse an old WaitConditionHandle resource. If you reuse a WaitConditionHandle resource, the WaitCondition resource might evaluate old signals from a previous create or update stack command.



   "Type" : "AWS::CloudFormation::WaitConditionHandle",
   "Properties" : {

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