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Layer balancer

This folder contains a Go project that balances the layer version of Lambda Powertools across all regions, so every region has the same layer version.

Before:

arn:aws:lambda:eu-central-1:017000801446:layer:AWSLambdaPowertoolsPythonV2:11
...
arn:aws:lambda:eu-west-1:017000801446:layer:AWSLambdaPowertoolsPythonV2:9

After:

arn:aws:lambda:eu-central-1:017000801446:layer:AWSLambdaPowertoolsPythonV2:11
...
arn:aws:lambda:eu-west-1:017000801446:layer:AWSLambdaPowertoolsPythonV2:11

What's happening under the hood?

  1. Query all regions to find the greatest version number
  2. Download the latest layer from eu-central-1
  3. Use the layer contents to bump the version on each region until it matches 1

Requirements

  • go >= 1.18

How to use

  1. Set your AWS_PROFILE to the correct profile
  2. go run .
  3. Profit :-)