Delete orphan CloudFormation stacks action

This action deletes all cloudformation xx/pr stacks in the provided region with the given name prefix when there's no corresponding branch.
The stage is transformed from the branch name (eg. #85-my-feature > xx85 / pr85).
master/main stack is always ignored.

Make sure your CloudFormation Stacks are fully deletable (if autoDeleteBuckets=true also autoDeleteItems, etc.)

Usage

Inputs

`githubToken`

Required string The github access token with scope repo

`stackNamePrefix`

Required string The prefix of the stack names to delete.

`ignoreStacks`

Optional JSON String Array of stack identifiers to ignore. master and main stack is always ignored.

`dryMode`

Optional boolean default false. If true no stacks will be deleted. Only output the detected orphans.

Example workflow step config

- name: Configure AWS Credentials
  uses: aws-actions/configure-aws-credentials@v4
  with:
    role-to-assume: 'arn:aws:iam::{ACCOUNT_ID}:role/{ROLE_NAME}'
    aws-region: {AWS_REGION}
- name: Delete Orphan Stacks
  uses: shiftcode/delete-orphan-cfn-stacks-action@v0.0.X
  with:
    githubToken: 'ghp_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
    stackNamePrefix: 'ch-website'
    ignoreStacks: '["xx1"]'

Hints

if there are stacks in multiple regions: use both actions two times with their corresponding region.
if working with assumedRoles and aws-actions/configure-aws-credentials@v1 the policy statement for the static iam user needs to have the actions "sts:AssumeRole AND sts:TagSession allowed on the role to assume. The Trust relationship of the assumed role needs to allow those actions for the assuming user.

Development

testing

To test the action locally: call index.js with the env vars for the action inputs and repo name:
GITHUB_REPOSITORY="shiftcode/my-repo" INPUT_STACKNAMEPREFIX="ch-website" INPUT_GITHUBTOKEN="ghp_xxx"" INPUT_IGNORESTACKS="[]" node ./dist/index.js

new version

implement your changes
commit with npx commit
set tag git tag -a -m "my fancy release" v0.0.X
push with tags git push --follow-tags