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package Paws::CloudFormation::ResourceChangeDetail; |
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use Moose; |
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has CausingEntity => (is => 'ro', isa => 'Str'); |
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has ChangeSource => (is => 'ro', isa => 'Str'); |
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has Evaluation => (is => 'ro', isa => 'Str'); |
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has Target => (is => 'ro', isa => 'Paws::CloudFormation::ResourceTargetDefinition'); |
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1; |
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### main pod documentation begin ### |
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=head1 NAME |
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Paws::CloudFormation::ResourceChangeDetail |
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=head1 USAGE |
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This class represents one of two things: |
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=head3 Arguments in a call to a service |
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Use the attributes of this class as arguments to methods. You shouldn't make instances of this class. |
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Each attribute should be used as a named argument in the calls that expect this type of object. |
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As an example, if Att1 is expected to be a Paws::CloudFormation::ResourceChangeDetail object: |
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$service_obj->Method(Att1 => { CausingEntity => $value, ..., Target => $value }); |
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=head3 Results returned from an API call |
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Use accessors for each attribute. If Att1 is expected to be an Paws::CloudFormation::ResourceChangeDetail object: |
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$result = $service_obj->Method(...); |
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$result->Att1->CausingEntity |
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=head1 DESCRIPTION |
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For a resource with C<Modify> as the action, the C<ResourceChange> |
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structure describes the changes AWS CloudFormation will make to that |
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resource. |
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=head1 ATTRIBUTES |
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=head2 CausingEntity => Str |
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The identity of the entity that triggered this change. This entity is a |
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member of the group that is specified by the C<ChangeSource> field. For |
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example, if you modified the value of the C<KeyPairName> parameter, the |
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C<CausingEntity> is the name of the parameter (C<KeyPairName>). |
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If the C<ChangeSource> value is C<DirectModification>, no value is |
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given for C<CausingEntity>. |
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=head2 ChangeSource => Str |
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The group to which the C<CausingEntity> value belongs. There are five |
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entity groups: |
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=over |
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=item * |
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C<ResourceReference> entities are C<Ref> intrinsic functions that refer |
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to resources in the template, such as C<{ "Ref" : |
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"MyEC2InstanceResource" }>. |
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=item * |
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C<ParameterReference> entities are C<Ref> intrinsic functions that get |
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template parameter values, such as C<{ "Ref" : "MyPasswordParameter" |
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}>. |
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=item * |
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C<ResourceAttribute> entities are C<Fn::GetAtt> intrinsic functions |
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that get resource attribute values, such as C<{ "Fn::GetAtt" : [ |
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"MyEC2InstanceResource", "PublicDnsName" ] }>. |
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=item * |
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C<DirectModification> entities are changes that are made directly to |
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the template. |
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=item * |
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C<Automatic> entities are C<AWS::CloudFormation::Stack> resource types, |
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which are also known as nested stacks. If you made no changes to the |
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C<AWS::CloudFormation::Stack> resource, AWS CloudFormation sets the |
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C<ChangeSource> to C<Automatic> because the nested stack's template |
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might have changed. Changes to a nested stack's template aren't visible |
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to AWS CloudFormation until you run an update on the parent stack. |
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=back |
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=head2 Evaluation => Str |
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Indicates whether AWS CloudFormation can determine the target value, |
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and whether the target value will change before you execute a change |
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set. |
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For C<Static> evaluations, AWS CloudFormation can determine that the |
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target value will change, and its value. For example, if you directly |
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modify the C<InstanceType> property of an EC2 instance, AWS |
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CloudFormation knows that this property value will change, and its |
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value, so this is a C<Static> evaluation. |
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For C<Dynamic> evaluations, cannot determine the target value because |
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it depends on the result of an intrinsic function, such as a C<Ref> or |
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C<Fn::GetAtt> intrinsic function, when the stack is updated. For |
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example, if your template includes a reference to a resource that is |
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conditionally recreated, the value of the reference (the physical ID of |
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the resource) might change, depending on if the resource is recreated. |
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If the resource is recreated, it will have a new physical ID, so all |
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references to that resource will also be updated. |
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=head2 Target => L<Paws::CloudFormation::ResourceTargetDefinition> |
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A C<ResourceTargetDefinition> structure that describes the field that |
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AWS CloudFormation will change and whether the resource will be |
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recreated. |
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=head1 SEE ALSO |
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This class forms part of L<Paws>, describing an object used in L<Paws::CloudFormation> |
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=head1 BUGS and CONTRIBUTIONS |
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The source code is located here: https://github.com/pplu/aws-sdk-perl |
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Please report bugs to: https://github.com/pplu/aws-sdk-perl/issues |
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=cut |
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