feat(msk): support Express brokers #34741

mazyu36 · 2025-06-17T14:11:27Z

Issue # (if applicable)

Closes #32923.

Reason for this change

To support express brokers.

Description of changes

Add express property and validations about express limitations.

Describe any new or updated permissions being added

N/A

Description of how you validated changes

Add unit tests and an integ test.

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

aws-cdk-automation

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✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

aws-cdk-automation · 2025-08-04T16:50:49Z

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badmintoncryer

Thank you for your contribution!

I thought it might be a good idea to add a validation to ensure that the Kafka version is 3.6 or higher, but it also feels a bit excessive.
I’d appreciate it if you could discuss with the maintainer.

badmintoncryer · 2025-09-20T04:59:16Z

@mazyu36 Cloud you please update PR title? It results updating PR labels.

kumsmrit

Thank you for your contribution. I have added some review comments.

kumsmrit · 2025-10-23T13:58:04Z

packages/@aws-cdk/aws-msk-alpha/lib/cluster.ts

+   *
+   * @default false
+   */
+  readonly express?: boolean;


Can we switch from using boolean to enum instead readonly brokerType?: BrokerType; keeping it more future proof ?

enum BrokerType { STANDARD = 'STANDARD', EXPRESS = 'EXPRESS' }

Thanks.
Added Enum.

kumsmrit · 2025-10-23T14:09:38Z

packages/@aws-cdk/aws-msk-alpha/lib/cluster.ts

      throw new core.ValidationError('EBS volume size should be in the range 1-16384', this);
    }

+    if (props.express) {


MSK ExpressBroker is supported only on Apache Kafka 3.6 and 3.8; Can we add that validation please.

Added a validation.

kumsmrit · 2025-10-23T14:35:00Z

packages/@aws-cdk/aws-msk-alpha/README.md

+You can create an MSK cluster with Express Brokers by setting the `express` property to `true`. Express Brokers are a low-cost option for development, testing, and workloads that don't require the high availability guarantees of standard MSK cluster.
+For more information, see [Amazon MSK Express Brokers](https://docs.aws.amazon.com/msk/latest/developerguide/msk-broker-types-express.html).
+
+**Note:** When using Express Brokers, the following constraints apply:


nit: It would also be good to include information about the supported broker sizes

Added.
https://github.com/aws/aws-cdk/pull/34741/files#diff-4406b784e4e36caa633087e16dac06881e3c0c2f3443fbb0770bd3bd37fc3aa9R248

kumsmrit

Thank you for addressing the comments.

mergify · 2025-10-24T16:07:02Z

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).

mergify · 2025-10-24T16:11:24Z

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).

mergify · 2025-10-24T16:40:29Z

This pull request has been removed from the queue for the following reason: checks failed.

The merge conditions cannot be satisfied due to failing checks:

You may have to fix your CI before adding the pull request to the queue again.
If you update this pull request, to fix the CI, it will automatically be requeued once the queue conditions match again.
If you think this was a flaky issue instead, you can requeue the pull request, without updating it, by posting a @mergifyio requeue comment.

mazyu36 · 2025-10-24T22:49:37Z

@Mergifyio update

mergify · 2025-10-24T22:49:50Z

update

☑️ Nothing to do, the required conditions are not met

#commits-behind > 0 [📌 update requirement]
-closed [📌 update requirement]
-conflict [📌 update requirement]
queue-position = -1 [📌 update requirement]

Pull request has been modified.

mergify · 2025-10-27T12:13:29Z

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).

github-actions · 2025-10-27T12:13:49Z

Comments on closed issues and PRs are hard for our team to see.
If you need help, please open a new issue that references this one.

feat(msk): support Express Brokers

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github-actions bot added effort/medium Medium work item – several days of effort feature-request A feature should be added or improved. p2 labels Jun 17, 2025

aws-cdk-automation requested a review from a team June 17, 2025 14:11

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mazyu36 added 5 commits June 18, 2025 00:16

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mazyu36 marked this pull request as ready for review June 20, 2025 01:27

mazyu36 added 5 commits June 20, 2025 11:57

Merge branch 'main' into feat/msk-express

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Merge branch 'main' into feat/msk-express

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Update integ.cluster-express.ts

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Merge branch 'main' into feat/msk-express

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badmintoncryer approved these changes Sep 9, 2025

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mazyu36 added 2 commits September 10, 2025 14:50

fix integ

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Merge branch 'main' into feat/msk-express

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mazyu36 changed the title ~~feat(msk): support Express Brokers~~ feat(msk): support Express brokers Sep 20, 2025

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mazyu36 added 4 commits September 20, 2025 14:34

Merge branch 'main' into feat/msk-express

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Merge branch 'main' into feat/msk-express

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mazyu36 had a problem deploying to deployment-integ-test October 7, 2025 12:54 — with GitHub Actions Error

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Merge branch 'main' into feat/msk-express

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mergify bot merged commit 0a69e5f into aws:main Oct 27, 2025
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feat(msk): support Express brokers #34741

feat(msk): support Express brokers #34741

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