System Initiative

name: Instance refresh run-name: Replacing instances for ${{ inputs.service }} # Required for IDP JWT and actions/checkout permissions: id-token: write contents: read on: workflow_call: inputs: environment: type: string required: true description: "where to deploy" service: type: string required: true description: "service to deploy" jobs: replace: environment: ${{ inputs.environment }} concurrency: group: instance-refresh-${{ inputs.environment }}-${{ inputs.service }} cancel-in-progress: true name: Instance refresh runs-on: ubuntu-latest steps: - name: Configure AWS Credentials uses: aws-actions/configure-aws-credentials@v4 with: role-to-assume: ${{ vars.AWS_ASSUME_ROLE_ARN }} role-session-name: GitHub_to_AWS_via_FederatedOIDC aws-region: us-east-1 - name: Instance refresh run: | poll_instance_refresh() { local environment local service local id environment="$1" service="$2" id="$3" while true; do status=$(aws autoscaling describe-instance-refreshes \ --auto-scaling-group-name "${environment}-${service}" \ --query "InstanceRefreshes[?InstanceRefreshId=='${id}'].Status" \ --output text) if [ -z "$status" ]; then echo "No instance refresh found with ID ${id} for ${environment}-${service}." break fi echo "Instance refresh status: $status" if [[ "$status" == "Successful" ]]; then echo "Instance refresh completed successfully." break elif [[ "$status" == "Failed" || "$status" == "Cancelled" ]]; then echo "Instance refresh failed or was cancelled." exit 1 else echo "Instance refresh is still in progress. Waiting..." sleep 15 fi done } check_existing_refresh() { local environment local service environment="$1" service="$2" id=$(aws autoscaling describe-instance-refreshes \ --auto-scaling-group-name "${environment}-${service}"\ --query "InstanceRefreshes[?Status=='InProgress'].[InstanceRefreshId]"\ --output text) poll_instance_refresh "$environment" "$service" "$id" } ENVIRONMENT="${{ inputs.environment }}" SERVICE="${{ inputs.service }}" echo "Checking if an instance refresh is already underway..." check_existing_refresh "$ENVIRONMENT" "$SERVICE" id=$(aws autoscaling start-instance-refresh \ --auto-scaling-group-name "${ENVIRONMENT}-${SERVICE}" \ --query 'InstanceRefreshId' --output text) poll_instance_refresh "$ENVIRONMENT" "$SERVICE" "$id"