Converts AWS region names from full names to abbreviations

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It's 100% Open Source and licensed under the APACHE2.

Converts AWS region names from full names to either "fixed" (always 3 characters) or "short" (usually 4 or 5 characters) abbreviations, following the same map as https://github.com/cloudposse/terraform-aws-utils

Short abbreviations are generally the same as official AWS availability zone IDs.

Generally, AWS region names have 3 parts and the "fixed" abbreviation is the first character of each part. Exceptions (due to collisions):

• Africa and China use second letter of first part.
• ap-south-1 is shortened to as0 to avoid conflict with ap-southeast-1
• cn-north-1 is shortened to nn0 to avoid conflict with cn-northwest-1

You should be able to list all regions with this command:

aws ec2 describe-regions --all-regions --query "Regions[].{Name:RegionName}" --output text

but actually it leaves out GovCloud and China See https://github.com/jsonmaur/aws-regions for more complete list

  name: Pull Request
  on:
    pull_request:
      branches: [ 'main' ]
      types: [opened, synchronize, reopened, closed, labeled, unlabeled]

  jobs:
    context:
      runs-on: ubuntu-latest
      steps:
        - uses: cloudposse/github-action-aws-region-reduction-map@main
          id: aws_map
          with:
            region: 'us-west-2'
            ## Format can be skipped - default format would be `fixed` if region is long 
            format: 'fixed'

      outputs:
        result: ${{ steps.aws_map.outputs.result }}

  name: Pull Request
  on:
    pull_request:
      branches: [ 'main' ]
      types: [opened, synchronize, reopened, closed, labeled, unlabeled]

  jobs:
    context:
      runs-on: ubuntu-latest
      steps:
        - uses: cloudposse/github-action-aws-region-reduction-map@main
          id: aws_map
          with:
            region: 'us-west-2'
            format: 'short'

      outputs:
        result: ${{ steps.aws_map.outputs.result }}

  name: Pull Request
  on:
    pull_request:
      branches: [ 'main' ]
      types: [opened, synchronize, reopened, closed, labeled, unlabeled]

  jobs:
    context:
      runs-on: ubuntu-latest
      steps:
        - uses: cloudposse/github-action-aws-region-reduction-map@main
          id: aws_map
          with:
            region: 'usw2'
            format: 'long'

      outputs:
        result: ${{ steps.aws_map.outputs.result }}

  name: Pull Request
  on:
    pull_request:
      branches: [ 'main' ]
      types: [opened, synchronize, reopened, closed, labeled, unlabeled]

  jobs:
    context:
      runs-on: ubuntu-latest
      steps:
        - uses: cloudposse/github-action-aws-region-reduction-map@main
          id: aws_map
          with:
            region: 'uw2'
            format: 'long'

      outputs:
        result: ${{ steps.aws_map.outputs.result }}

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