Cleanup Stale EC2 Instances #68

	name: Cleanup Stale EC2 Instances

	on:
	schedule:
	# Run daily at 06:00 UTC
	- cron: "0 6 * * *"
	workflow_dispatch:

	jobs:
	cleanup:
	name: Delete stale packer EC2 instances
	runs-on: ubuntu-latest
	strategy:
	matrix:
	region: [ap-southeast-1, us-east-1]

	permissions:
	id-token: write
	contents: read

	steps:
	- name: Configure AWS credentials
	uses: aws-actions/configure-aws-credentials@v4
	with:
	role-to-assume: ${{ secrets.DEV_AWS_ROLE }}
	aws-region: ${{ matrix.region }}

	- name: Find and terminate stale instances
	env:
	AWS_MAX_ATTEMPTS: 6
	run: \|
	cutoff=$(date -u -d '24 hours ago' '+%Y-%m-%dT%H:%M:%SZ')

	echo "Looking for running packer builder instances launched before ${cutoff}..."

	instance_ids=$(aws ec2 describe-instances \
	--filters \
	"Name=tag:appType,Values=postgres" \
	"Name=tag:creator,Values=packer" \
	"Name=instance-state-name,Values=running" \
	--query "Reservations[].Instances[?LaunchTime<'${cutoff}'][].InstanceId" \
	--output text)

	if [ -z "$instance_ids" ]; then
	echo "No stale instances found."
	exit 0
	fi

	read -r -a instance_id_arr <<< "$instance_ids"
	echo "Terminating instances: ${instance_id_arr[*]}"
	aws ec2 terminate-instances --instance-ids "${instance_id_arr[@]}"
	echo "Done."

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