Support Serverless Google Cloud Functions

[gregorskii]

Any plans to support Google Cloud functions similar to the way Lambda is supported?

If you have an idea of what would need to be done to do this I can potentially help with a PR.

Thanks.

[Jeffail]

Hey @gregorskii,

Definitely, I haven't got much experience with Google Cloud so I was reluctant to take this on myself. The plumbing work should already be there from the lambda implementation, so it should hopefully just be a case of following the same process.

First step would be to create a package similar to https://github.com/Jeffail/benthos/tree/master/lib/serverless/lambda, which does the execution handler wrapping around the serverless library.

Then add a cmd package similar to https://github.com/Jeffail/benthos/tree/master/cmd/serverless/benthos-lambda

Finally, add the build and archive stages for the cmd package to https://github.com/Jeffail/benthos/blob/master/.goreleaser.yml and it should then get packaged in future releases.

I'm happy to help out with an unfinished PR but I'd need you to do the deployment testing.

[gregorskii]

Thank you I will review these notes and see if I can help.

Appreciate the direction.

[gregorskii]

An update on this. It runs quite well in Google Cloud Run as a regular docker image. Cloud Run has similar costs/complexity to Cloud Functions.

I believe Cloud Run suits my use case, up to you if it makes sense to leave this open. I do think others would benefit from it.

[Jeffail]

Thanks for the update @gregorskii, I'll leave this open as it'd be cool to have as an option at some point.