Java support

[zugaldia]

A while ago we built a demo that runs an Alexa Skill on a Lambda, this was built with Java because we used Mapbox Java Services (https://github.com/mapbox/mapbox-java). The code for the Lambda can be found on https://github.com/mapbox/mapbox-assistant-example.

Right now, we're manually building the .zip file every time there's a new release (make build in the root folder) which is far from ideal. We'd love to use Stork instead.

By looking at the current documentation, looks like only Node and Python are supported, so I'd like to explore the option of supporting Java as well (if this is possible). From the docs, looks like I should start by contributing a new Dockerfile that enables Java. As I'm not super-familiar with Stork, is there anything else that I should do? Is this possible at all?

[rclark]

This would be really welcome!

Yes, the first step would be to add a Dockerfile that represents as closely as possible the lambda runtime environment that you're targeting.

After that, you'll need to add a .yml file in the buildspecs folder that describes how to bundle a repositories code. Here's a link to the AWS documentation on the syntax of this file.

Note that for stork's existing buildspecs, application dependencies are installed in the working directory, and then that directory is automatically zipped and uploaded by CodeBuild. Also make sure to remove the .git/ directory as the last step in the process -- you don't want this included in the .zip file.

The last step is some very trivial code adjustments to make the java environment one that is easy to select through a .stork.json file.

[zugaldia]

Awesome @rclark, thanks for the pointers. Adding this to my backlog, excited to make it work.

[zugaldia]

Unfortunately I won't have the bandwidth to tackle this short/medium-term. Still interested in seeing this work but I'm removing my assignation, I'll update the ticket if that changes.