EventBridge based lambdas

[bmwoodall]

I am currently working on a generator for creating event based lambdas that are invoked via and EventBridge tasks. Our use case being that we want to run lambda functions on a schedule. I'm wondering if this would be potentially beneficial to add this this library, as well as if it would be warranted to have a core lambda construct that can be exposed to make custom lambda invocation types easy to compose (event bridge, s3 events, etc...).

[cogwirrel]

Hey Brandon!

Thanks so much for reaching out and your interested in contributing to the Nx Plugin for AWS!

That sounds interesting, and I could definitely see this as a useful addition! :)

I could imagine something like a ts#lambda-handler generator fitting in well, which lets users select the ts#project to add a handler to, the file path to write the handler to, and the type of handler (s3, event bridge etc). Then it could:

• generate the empty handler source code with all the right types from @types/aws-lambda
• add/update a bundle task to use esbuild to bundle the handler (just like the ts#trpc-api generator)
• generate a function construct in common/constructs which points to the bundled lambda handler in dist

(And a similar one for python would also be cool!)

Is that the sort of thing you had in mind or something else?

[bmwoodall]

Exactly right! That would help solve our need for scheduling lambda functions!

[cogwirrel]

Awesome!! We’d LOVE a contribution if you have the bandwidth! Otherwise please do raise a feature request and we can try to get it prioritised! 😁

[bmwoodall]

I can work on that this week

[cogwirrel]

Realised I never circled back on this! We have generators for lambda functions in both TypeScript and Python!

https://awslabs.github.io/nx-plugin-for-aws/en/guides/ts-lambda-function/
https://awslabs.github.io/nx-plugin-for-aws/en/guides/py-lambda-function/

Thanks again Brandon for your contribution! 😄