Download sources for AWS Lambda from external source systems

Question

I need to create simple terraform infrastructure and part of this infrastructure needs to create AWS Lambda with java Spring Boot application as source code.

I read documentation related to lambda and looks like right now terraform can only load sources from local file or from s3 bucket. In my case I store application jar file in Nexus repository(binary storage) and want to load source code/jar during Lambda creation from Nexus too.

Based on terraform documentation it has:

• local provider that could only create files.
• http provider that supports responses with Content-Type text/* or application/json and in my case I have application/java-archive
• external provider expects json response and in my case I have archive.

no one of this approaches solve my problem. Of cause I can create bash file that will run wget command for jar file and then run terraform command. But this does not look pretty from my perspective. May be you can suggest any other solutions that would be more accurate and flexible.

Answer 1

The simplest solution is the one you have already suggested - wrap terraform in a parent command that first fetches the jar file - or even just document this as a required manual step / dependency. I believe this is fairly common.

Alternatively, if you really want to be provided with something for which there is no existing provider, you can create your own Terraform provider.