fix(CLI): sam resources hidden in changeset diffs#29223
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GavinZZ
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Looks good, just a question for my own understanding.
| Changes: [ | ||
| { | ||
| Type: 'Resource', | ||
| ResourceChange: { | ||
| Action: 'Modify', | ||
| LogicalResourceId: 'ServerlessFunction', | ||
| ResourceType: 'AWS::Lambda::Function', // The SAM transform is applied before the changeset is created, so the changeset has a Lambda resource here! | ||
| Replacement: 'False', | ||
| Details: [{ | ||
| Evaluation: 'Direct', | ||
| Target: { | ||
| Attribute: 'Properties', | ||
| Name: 'Code', | ||
| RequiresRecreation: 'Never', | ||
| }, | ||
| }], | ||
| }, | ||
| }, | ||
| ], | ||
| }); | ||
| expect(differences.resources.differenceCount).toBe(1); |
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Curious what would the changes look like before this change?
|
Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork). |
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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork). |
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Issue # (if applicable)
Closes #29185
Reason for this change
CFN applies the SAM transform before the changeset is created. This means that SAM resources become their underlying CFN types in the template that the changeset operates on. This means that the changeset is operating on resources that we don't see in our template.
Description of changes
Before, if we saw properties in our diff that were not in the changeset (like
codeUriforServerless::Function, which doesn't appear in the changeset, because it becomesCodeforLambda::Function), we'd filter them out of the diff. We now skip this process for SAM resources.Description of how you validated changes
unit test
Checklist
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license