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fix(cli): support attributes of DynamoDB Tables for hotswapping #19620

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merged 2 commits into from
Apr 1, 2022
Merged

fix(cli): support attributes of DynamoDB Tables for hotswapping #19620

merged 2 commits into from
Apr 1, 2022

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skinny85
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@skinny85 skinny85 commented Mar 29, 2022 •
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When using Nested Stacks, Parameters are used to pass values between the parent and child Stacks.
A customer had a setup where a DynamoDB Table was in the parent Stack,
and a Lambda using that Table (through environment variables) was in the child Stack.
In order to be able to hotswap the Lambda in the child Stack,
we have to correctly resolve attributes of the AWS::DynamoDB::Table resource,
like Ref and Arn, to resolve the values of the Parameters passed to the child Stack.

Fixes #19421

All Submissions:

Adding new Unconventional Dependencies:

  • This PR adds new unconventional dependencies following the process described here

New Features

  • Have you added the new feature to an integration test?
    • Did you use cdk-integ to deploy the infrastructure and generate the snapshot (i.e. cdk-integ without --dry-run)?

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

@skinny85 skinny85 requested a review from comcalvi March 29, 2022 23:44
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gitpod-io bot commented Mar 29, 2022

@github-actions github-actions bot added the package/tools Related to AWS CDK Tools or CLI label Mar 29, 2022
@github-actions github-actions bot added feature-request A feature should be added or improved. p2 labels Mar 29, 2022
@mergify mergify bot added the contribution/core This is a PR that came from AWS. label Mar 29, 2022
rix0rrr
rix0rrr requested changes Mar 31, 2022
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Please explain what's happening in the PR body. This is confusing me to no end.

Is it that we need to have every resource that could potentially be { Ref }ed from a hotswappable resource in a table? Why do we need that table in the first place?

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Please explain what's happening in the PR body. This is confusing me to no end.

Is it that we need to have every resource that could potentially be { Ref }ed from a hotswappable resource in a table? Why do we need that table in the first place?

That's fair @rix0rrr. I've updated the description of the PR, let me know if this is clear now, or if you need more information.

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rix0rrr commented Apr 1, 2022

The maintenance burden this brings makes me uncomfortable... but I guess there's not really a way around it...

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Thank you for contributing! Your pull request will be updated from master and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

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  • CodeBuild project: AutoBuildProject89A8053A-LhjRyN9kxr8o
  • Commit ID: 6510dfa
  • Result: SUCCEEDED
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@mergify mergify bot merged commit 2321ece into aws:master Apr 1, 2022
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Thank you for contributing! Your pull request will be updated from master and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

@skinny85 skinny85 deleted the fix/ddb-hotswap-attributes branch April 1, 2022 22:39
This was referenced Apr 7, 2022
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mergify bot added a commit that referenced this pull request Apr 7, 2022
@mergify
chore(release): 1.152.0 (#19781)
9487b39 
See [CHANGELOG](https://github.com/aws/aws-cdk/blob/bump/1.152.0/CHANGELOG.md)

For convenience, extracted the relevant CHANGELOG entry:

## [1.152.0](v1.151.0...v1.152.0) (2022-04-06)


### Features

* **cfnspec:** cloudformation spec v63.0.0 ([#19679](#19679)) ([dba96a9](dba96a9))
* **cfnspec:** cloudformation spec v65.0.0 ([#19745](#19745)) ([796fc64](796fc64))
* **cli:** add --build option ([#19663](#19663)) ([eb9b8e2](eb9b8e2)), closes [#19667](#19667)
* **cli:** preview of `cdk import` ([#17666](#17666)) ([4f12209](4f12209))
* **core:** throw error when stack name exceeds max length ([#19725](#19725)) ([1ffd45e](1ffd45e))
* **eks:** add k8s v1.22 ([#19756](#19756)) ([9a518c5](9a518c5))
* **opensearch:** Add latest Opensearch Version 1.2 ([#19749](#19749)) ([a2ac36e](a2ac36e))
* add new integration test runner ([#19754](#19754)) ([1b4d010](1b4d010))
* **eks:** alb-controller v2.4.1 ([#19653](#19653)) ([1ec08df](1ec08df))
* **lambda:** add support for ephemeral storage ([#19552](#19552)) ([f1d9b6a](f1d9b6a)), closes [#19605](#19605)
* **s3:** EventBridge bucket notifications ([#18614](#18614)) ([d8e602b](d8e602b)), closes [#18076](#18076)
* **synthetics:** new puppeteer 3.5 runtime ([#19673](#19673)) ([ce2b91b](ce2b91b)), closes [#19634](#19634)


### Bug Fixes

* **aws_applicationautoscaling:** Add missing members to PredefinedMetric enum ([#18978](#18978)) ([75a6fa7](75a6fa7)), closes [#18969](#18969)
* **cli:** apps with many resources scroll resource output offscreen ([#19742](#19742)) ([053d22c](053d22c)), closes [#19160](#19160)
* **cli:** support attributes of DynamoDB Tables for hotswapping ([#19620](#19620)) ([2321ece](2321ece)), closes [#19421](#19421)
* **cloudwatch:** automatic metric math label cannot be suppressed ([#17639](#17639)) ([7fa3bf2](7fa3bf2))
* **codedeploy:** add name validation for Application, Deployment Group and Deployment Configuration ([#19473](#19473)) ([9185042](9185042))
* **codedeploy:** the Service Principal is wrong in isolated regions ([#19729](#19729)) ([7e9a43d](7e9a43d)), closes [#19399](#19399)
* **core:** `Fn.select` incorrectly short-circuits complex expressions ([#19680](#19680)) ([7f26fad](7f26fad))
* **core:** detect and resolve stringified number tokens ([#19578](#19578)) ([7d9ab2a](7d9ab2a)), closes [#19546](#19546) [#19550](#19550)
* **core:** reduce CFN template indent size to save bytes ([#19656](#19656)) ([fd63ca3](fd63ca3))
* **ecs:** 'desiredCount' and 'ephemeralStorageGiB' cannot be tokens ([#19453](#19453)) ([c852239](c852239)), closes [#16648](#16648)
* **ecs:** remove unnecessary error when adding volume to external task definition ([#19774](#19774)) ([5446ded](5446ded)), closes [#19259](#19259)
* **iam:** policies aren't minimized as far as possible ([#19764](#19764)) ([876ed8a](876ed8a)), closes [#19751](#19751)
* **logs:** Faulty Resource Policy Generated ([#19640](#19640)) ([1fdf122](1fdf122)), closes [#17544](#17544)
mergify bot added a commit that referenced this pull request Apr 7, 2022
@mergify
chore(release): 2.20.0 (#19801)
738ef49 
See [CHANGELOG](https://github.com/aws/aws-cdk/blob/bump/2.20.0/CHANGELOG.md)

For convenience, extracted the relevant CHANGELOG entry:

## [2.20.0](v2.19.0...v2.20.0) (2022-04-07)


### Features

* **cfnspec:** cloudformation spec v63.0.0 ([#19679](#19679)) ([dba96a9](dba96a9))
* **cfnspec:** cloudformation spec v65.0.0 ([#19745](#19745)) ([796fc64](796fc64))
* **cli:** add --build option ([#19663](#19663)) ([eb9b8e2](eb9b8e2)), closes [#19667](#19667)
* **cli:** preview of `cdk import` ([#17666](#17666)) ([4f12209](4f12209))
* **core:** throw error when stack name exceeds max length ([#19725](#19725)) ([1ffd45e](1ffd45e))
* **eks:** add k8s v1.22 ([#19756](#19756)) ([9a518c5](9a518c5))
* **opensearch:** Add latest Opensearch Version 1.2 ([#19749](#19749)) ([a2ac36e](a2ac36e))
* add new integration test runner ([#19754](#19754)) ([1b4d010](1b4d010))
* **eks:** alb-controller v2.4.1 ([#19653](#19653)) ([1ec08df](1ec08df))
* **lambda:** add support for ephemeral storage ([#19552](#19552)) ([f1d9b6a](f1d9b6a)), closes [#19605](#19605)
* **s3:** EventBridge bucket notifications ([#18614](#18614)) ([d8e602b](d8e602b)), closes [#18076](#18076)


### Bug Fixes

* **aws_applicationautoscaling:** Add missing members to PredefinedMetric enum ([#18978](#18978)) ([75a6fa7](75a6fa7)), closes [#18969](#18969)
* **cli:** apps with many resources scroll resource output offscreen ([#19742](#19742)) ([053d22c](053d22c)), closes [#19160](#19160)
* **cli:** support attributes of DynamoDB Tables for hotswapping ([#19620](#19620)) ([2321ece](2321ece)), closes [#19421](#19421)
* **cloudwatch:** automatic metric math label cannot be suppressed ([#17639](#17639)) ([7fa3bf2](7fa3bf2))
* **codedeploy:** add name validation for Application, Deployment Group and Deployment Configuration ([#19473](#19473)) ([9185042](9185042))
* **codedeploy:** the Service Principal is wrong in isolated regions ([#19729](#19729)) ([7e9a43d](7e9a43d)), closes [#19399](#19399)
* **core:** `Fn.select` incorrectly short-circuits complex expressions ([#19680](#19680)) ([7f26fad](7f26fad))
* **core:** detect and resolve stringified number tokens ([#19578](#19578)) ([7d9ab2a](7d9ab2a)), closes [#19546](#19546) [#19550](#19550)
* **core:** reduce CFN template indent size to save bytes ([#19656](#19656)) ([fd63ca3](fd63ca3))
* **ecs:** 'desiredCount' and 'ephemeralStorageGiB' cannot be tokens ([#19453](#19453)) ([c852239](c852239)), closes [#16648](#16648)
* **ecs:** remove unnecessary error when adding volume to external task definition ([#19774](#19774)) ([5446ded](5446ded)), closes [#19259](#19259)
* **iam:** policies aren't minimized as far as possible ([#19764](#19764)) ([876ed8a](876ed8a)), closes [#19751](#19751)
* **logs:** Faulty Resource Policy Generated ([#19640](#19640)) ([1fdf122](1fdf122)), closes [#17544](#17544)
StevePotter pushed a commit to StevePotter/aws-cdk that referenced this pull request Apr 27, 2022
@skinny85
fix(cli): support attributes of DynamoDB Tables for hotswapping (aws#…
a0f1300 
…19620)

When using Nested Stacks, Parameters are used to pass values between the parent and child Stacks.
A customer had a setup where a DynamoDB Table was in the parent Stack,
and a Lambda using that Table (through environment variables) was in the child Stack.
In order to be able to hotswap the Lambda in the child Stack,
we have to correctly resolve attributes of the `AWS::DynamoDB::Table` resource,
like `Ref` and `Arn`, to resolve the values of the Parameters passed to the child Stack.

Fixes aws#19421

----

### All Submissions:

* [x] Have you followed the guidelines in our [Contributing guide?](https://github.com/aws/aws-cdk/blob/master/CONTRIBUTING.md)

### Adding new Unconventional Dependencies:

* [ ] This PR adds new unconventional dependencies following the process described [here](https://github.com/aws/aws-cdk/blob/master/CONTRIBUTING.md/#adding-new-unconventional-dependencies)

### New Features

* [ ] Have you added the new feature to an [integration test](https://github.com/aws/aws-cdk/blob/master/INTEGRATION_TESTS.md)?
	* [ ] Did you use `cdk-integ` to deploy the infrastructure and generate the snapshot (i.e. `cdk-integ` without `--dry-run`)?

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*
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(aws-tools): CLI --hotswap -> We don't support attributes of the 'AWS::DynamoDB::Table' resource
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