Trim Lambda Layers Action

This action takes given aws credentials and deletes lambda layers from oldest to newest until the provided amount remains

Usage

This example would remove dependencies from oldest to newest until there were 6 versions remaining.

name: Trim AWS Lambda Layers

on:
  release:
    types: [created]
  push:
    branches:
      - master

jobs:
  update_lambda_layers:
  	name: Trim layer versions
    runs-on: ubuntu-latest
    steps:
      - name: Trim versions
        uses: callummackenzie/trim-lambda-layers-action@v0.3
        with:
          aws_access_key_id: ${{ secrets.AWS_ACCESS_KEY_ID }}
          aws_secret_access_key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
          aws_region: ${{ secrets.AWS_REGION }
          layer_name: SomeAWSLambdaLayer
          version_keep_count: 6

Parameters

• aws_access_key_id
  • Required
  • The aws access key id for an IAM user
• aws_secret_access_key
  • Required
  • The secret access key for the same IAM user used in aws_access_key_id
• aws_region
  • Required
  • The aws region in which the desired lambda function is located such as us-east-1
• layer_name
  • Required
  • The layer function name to be updated (not the ARN)
• version_keep_count:
  • Required
  • The number of latest versions to keep
  • Default is 4

AWS Permissions Policy

The AWS IAM user this action uses must have permissions to:

• lambda:ListLayerVersions for the desired layer
• lambda:DeleteLayerVersion for the desired layer