appsync: L2 for AppSync Events

[tmokmss]

Describe the feature

AWS AppSync Events allows developers to easily broadcast real-time event data to subscribers using serverless WebSocket APIs, eliminating the need to build WebSocket infrastructure.

Release blog:
https://aws.amazon.com/blogs/mobile/announcing-aws-appsync-events-serverless-websocket-apis/

Developer Guide:
https://docs.aws.amazon.com/appsync/latest/eventapi/event-api-welcome.html

Use Case

Easily configure AppSync Events resources, e.g.

• Create an Event API
• Update configuration of the API, such as
  • authorization
  • namespace
  • logging
  • custom domain
• Configure event handlers for a namespace

Proposed Solution

No response

Other Information

It seems we don't have CloudFormation for AppSync Events support yet. After L1s are added, we can design L2 APIs. edit) L1s appears merged recently: #32007
Here is an implementation example: https://github.com/aws-samples/websocket-api-cognito-auth-sample/blob/main/cdk/lib/construct/events.ts

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CDK version used

2.165.0

Environment details (OS name and version, etc.)

macOS

[FilipPyrek]

It will be great to have L2 constructs 💪

Are there already L1 constructs? 👀 I don't see any. But I can see it in CloudFormation docs.

[tmokmss]

It seems L1s are merged: #32007

[pahud]

Thank you! Please help us prioritize with 👍 and we welcome community PRs!

[github-actions]

This issue has received a significant amount of attention so we are automatically upgrading its priority. A member of the community will see the re-prioritization and provide an update on the issue.

[mazyu36]

Hi.
Is anyone working on this?
If not, I’ll take this.​​​​​​​​​​​​​​​​

[fedecastelli]

hi! any news on this? I would like to start testing AWS AppSync Events but I really need to do it using AWS CDK and not through the console

[mazyu36]

Hi,
I’m working on it now.
It’s a bit complicated, so it might take some time.

[fedecastelli]

perfect! I can't wait to test it!

[tai-acall]

Hi, I’m working on it now. It’s a bit complicated, so it might take some time.

awesome! I'm looking for L2 too, thanks!

[mazyu36]

Hi, I've opened a PR #32411 👍

At the present, I think custom domain and WAF are not supported in CFn.
Please let me know if I am mistaken.

[tmokmss]

@mazyu36 Great work! For custom domains, I think we can use the existing AWS::AppSync::DomainNameApiAssociation and AWS::AppSync::DomainName just like graphql apis. As for WAF, we might be able to use AWS::WAFv2::WebACLAssociation resource by setting the event api's ARN (I haven't tested yet though.)

[mazyu36]

@tmokmss
Thanks! I've added Custom Domain Options.
Also I could associate WAF with Event API by using CfnWebAclAssociation.