ResourceChangeDetail
import type { ResourceChangeDetail } from "https://aws-api.deno.dev/v0.4/services/cloudformation.ts?docs=full";
For a resource with Modify
as the action, the ResourceChange
structure describes the changes CloudFormation will make to that resource.
§Properties
The identity of the entity that triggered this change.
This entity is a member of the group that's specified by the ChangeSource
field.
For example, if you modified the value of the KeyPairName
parameter, the CausingEntity
is the name of the parameter (KeyPairName
).
If the ChangeSource
value is DirectModification
, no value is given for CausingEntity
.
The group to which the CausingEntity
value belongs.
There are five entity groups:
ResourceReference
entities areRef
intrinsic functions that refer to resources in the template, such as{ "Ref" : "MyEC2InstanceResource" }
.ParameterReference
entities areRef
intrinsic functions that get template parameter values, such as{ "Ref" : "MyPasswordParameter" }
.ResourceAttribute
entities areFn::GetAtt
intrinsic functions that get resource attribute values, such as{ "Fn::GetAtt" : [ "MyEC2InstanceResource", "PublicDnsName" ] }
.DirectModification
entities are changes that are made directly to the template.Automatic
entities areAWS::CloudFormation::Stack
resource types, which are also known as nested stacks. If you made no changes to theAWS::CloudFormation::Stack
resource, CloudFormation sets theChangeSource
toAutomatic
because the nested stack's template might have changed. Changes to a nested stack's template aren't visible to CloudFormation until you run an update on the parent stack.
Indicates whether CloudFormation can determine the target value, and whether the target value will change before you execute a change set.
For Static
evaluations, CloudFormation can determine that the target value will change, and its value.
For example, if you directly modify the InstanceType
property of an EC2 instance, CloudFormation knows that this property value will change, and its value, so this is a Static
evaluation.
For Dynamic
evaluations, can't determine the target value because it depends on the result of an intrinsic function, such as a Ref
or Fn::GetAtt
intrinsic function, when the stack is updated.
For example, if your template includes a reference to a resource that's conditionally recreated, the value of the reference (the physical ID of the resource) might change, depending on if the resource is recreated.
If the resource is recreated, it will have a new physical ID, so all references to that resource will also be updated.
A ResourceTargetDefinition
structure that describes the field that CloudFormation will change and whether the resource will be recreated.