feat(appconfig): add grantReadConfig method to Environment Construct #30180

mazyu36 · 2024-05-13T13:10:56Z

Issue # (if applicable)

Closes #28585

Reason for this change

To simplify policy configuration for AppConfig Environments.

Description of changes

add grantReadConfig method to Environment Construct

Description of how you validated changes

Add unit test and integ tests

Checklist

My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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

daschaa · 2024-05-14T21:06:10Z

packages/aws-cdk-lib/aws-appconfig/lib/environment.ts

+   */
+  grant(grantee: iam.IGrantable, ...actions: string[]): iam.Grant;
+
+  /** TODO


I guess this TODO can be removed?

@daschaa
Oops...sorry, I removed it.

daschaa · 2024-05-15T05:11:54Z

packages/aws-cdk-lib/aws-appconfig/README.md

@@ -78,6 +78,24 @@ new appconfig.Environment(this, 'MyEnvironment', {
 Environment monitors also support L1 `CfnEnvironment.MonitorsProperty` constructs through the `fromCfnMonitorsProperty` method.
 However, this is not the recommended approach for CloudWatch alarms because a role will not be auto-generated if not provided.

+See [About the AWS AppConfig data plane service](https://docs.aws.amazon.com/appconfig/latest/userguide/about-data-plane.html) more information.


*for more information

@daschaa
Thank you for your review.
I added for.

daschaa · 2024-05-15T05:14:42Z

packages/aws-cdk-lib/aws-appconfig/README.md

+
+### Permissions
+
+You can grant read configuration permission on an Environment to any Principal as follows:


This sounds a bit raw to me. Maybe: You can grant permissions to read a configuration to an Environment with the grantReadConfig method as follows:

What do you think?

@daschaa
I think your suggestion is better.
I edited it.

daschaa · 2024-05-15T05:18:35Z

packages/aws-cdk-lib/aws-appconfig/lib/environment.ts

+
+  /**
+   * Grants read configuration permissions for this environment
+   * to an IAM principal (Role/Group/User).


Is the Grantable interface === IAM principal? Or is it even broader?
Are other docstrings for grant methods also describing this in this way?

@daschaa
From my understanding, the Grantable interface === IAM principal.
I have revised the explanation referring to the documentation of the grant method of the DynamoDB Table v2 Construct.

https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_dynamodb.TableV2.html#grantwbrreadwbrwritewbrdatagrantee

@mazyu36 Awesome! Thank you very much for the explanation!

daschaa · 2024-05-15T06:36:48Z

packages/aws-cdk-lib/aws-appconfig/lib/environment.ts

+   * Adds an IAM policy statement associated with this environment to an IAM principal's policy.
+   *
+   * @param grantee the principal (no-op if undefined)
+   * @param actions the set of actions to allow (i.e., 'appconfig:GetLatestConfiguration', 'appconfig:StartConfigurationSession', etc.)


I think the comma after i.e. can be removed, right? 🤔

@daschaa
I'm adding a comma (,) to align with the descriptions for DynamoDB.

aws-cdk/packages/aws-cdk-lib/aws-dynamodb/lib/table-v2-base.ts

Line 69 in 4b6dc8c

* @param actions the set of actions to allow (i.e., 'dynamodb:PutItem', 'dynamodb:GetItem', etc.)

daschaa · 2024-05-15T06:45:44Z

@mazyu36 Thank you very much for the pull requests and sorry for the back and forth with the docstrings.

GavinZZ · 2024-05-27T21:24:31Z

packages/aws-cdk-lib/aws-appconfig/lib/environment.ts

+    return iam.Grant.addToPrincipal({
+      grantee,
+      actions,
+      resourceArns: [`${this.environmentArn}/*`],


I'm not too familiar with appconfig usage. Any document supporting that this is the correct arns and least privilege?

Thank you for your comment.

Upon reviewing it again, I found that the scope of the resourcesArn for grantReadConfig was too broad, so I made a modification (added /configuration/).

In AppConfig, a Configuration Profile represents a parameter (e.g., a Feature Flag), and an Environment represents a logical group of deployed Configuration Profiles. (docs)

The ARN of a Configuration belonging to an Environment takes the following format. (docs)

arn:${Partition}:appconfig:${Region}:${Account}:application/${ApplicationId}/environment/${EnvironmentId}/configuration/${ConfigurationProfileId}

For this issue, I wanted to grant read permission for the parameters (Configurations) belonging to a logical group (Environment), so I needed to use a wildcard for /configuration/ and beyond, as I realized.

Previously, the wildcard was applied from /${EnvironmentId}/ onward, which was too broad in scope.

Regarding the grant method, I changed it to limit the resources to the Environment only.

GavinZZ

LGTM in general, just one question regarding permission.

packages/aws-cdk-lib/aws-appconfig/lib/environment.ts

GavinZZ · 2024-05-27T21:27:45Z

packages/aws-cdk-lib/aws-appconfig/README.md

@@ -3,13 +3,13 @@

 This module is part of the [AWS Cloud Development Kit](https://github.com/aws/aws-cdk) project.

-For a high level overview of what AWS AppConfig is and how it works, please take a look here: 


Nice, thanks for removing the whitespaces.

Co-authored-by: GZ <hz351086153@gmail.com>

mazyu36 · 2024-05-28T08:21:37Z

@GavinZZ
Thank you for your review!
I've addressed all your comments.

GavinZZ

LGTM, thanks for contributing!

mergify · 2024-05-29T01:15:13Z

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).

aws-cdk-automation · 2024-05-29T01:44:36Z

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mergify · 2024-05-29T01:44:54Z

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).

…ws#30180) ### Issue # (if applicable) Closes aws#28585 ### Reason for this change To simplify policy configuration for AppConfig Environments. ### Description of changes add grantReadConfig method to Environment Construct ### Description of how you validated changes Add unit test and integ tests ### Checklist - [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md) ---- *By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

aws-cdk-automation · 2024-07-25T21:08:51Z

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feat: add grantReadConfig method

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aws-cdk-automation requested a review from a team May 13, 2024 13:11

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mazyu36 added 2 commits May 13, 2024 22:19

Merge branch 'main' into appcpnfig-grant-read-28585

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fix: update README

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mazyu36 and others added 2 commits May 28, 2024 12:45

Update packages/aws-cdk-lib/aws-appconfig/lib/environment.ts

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Co-authored-by: GZ <hz351086153@gmail.com>

fix: permission changed

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Merge branch 'main' into appcpnfig-grant-read-28585

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feat(appconfig): add grantReadConfig method to Environment Construct #30180

feat(appconfig): add grantReadConfig method to Environment Construct #30180

mazyu36 commented May 13, 2024

daschaa May 14, 2024

mazyu36 May 15, 2024

daschaa May 15, 2024

mazyu36 May 15, 2024

daschaa May 15, 2024

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aws-cdk-automation commented Jul 25, 2024


		### Permissions

		You can grant read configuration permission on an Environment to any Principal as follows:

		@@ -3,13 +3,13 @@

		This module is part of the [AWS Cloud Development Kit](https://github.com/aws/aws-cdk) project.

		For a high level overview of what AWS AppConfig is and how it works, please take a look here:

feat(appconfig): add grantReadConfig method to Environment Construct #30180

feat(appconfig): add grantReadConfig method to Environment Construct #30180

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mazyu36 commented May 13, 2024

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