Amazon RDS Snapshot Then Delete a DB Instance

arazzo: 1.0.1
info:
  title: Amazon RDS Snapshot Then Delete a DB Instance
  summary: Take a final manual snapshot, wait for it, then safely delete the instance.
  description: >-
    Safely decommissions a DB instance by first capturing a manual snapshot,
    waiting for that snapshot to become available, and only then deleting the
    instance with a final snapshot retained. The workflow creates a manual
    snapshot, polls DescribeDBSnapshots until it is available, and then issues
    the delete with SkipFinalSnapshot false and a FinalDBSnapshotIdentifier.
    Every step spells out its request inline so the flow can be read and executed
    without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: amazonRdsApi
  url: ../openapi/amazon-rds-openapi.yml
  type: openapi
workflows:
- workflowId: snapshot-then-delete-instance
  summary: Snapshot a DB instance, wait for the snapshot, then delete the instance.
  description: >-
    Creates a manual snapshot, polls until it is available, then deletes the
    source instance while retaining a final snapshot.
  inputs:
    type: object
    required:
    - dbInstanceIdentifier
    - dbSnapshotIdentifier
    - finalDbSnapshotIdentifier
    properties:
      dbInstanceIdentifier:
        type: string
        description: The identifier of the DB instance to snapshot and delete.
      dbSnapshotIdentifier:
        type: string
        description: The identifier for the pre-deletion manual snapshot.
      finalDbSnapshotIdentifier:
        type: string
        description: The identifier for the final snapshot taken during deletion.
  steps:
  - stepId: createSnapshot
    description: >-
      Request a manual snapshot of the source DB instance before deletion.
    operationId: createDBSnapshot
    parameters:
    - name: DBSnapshotIdentifier
      in: query
      value: $inputs.dbSnapshotIdentifier
    - name: DBInstanceIdentifier
      in: query
      value: $inputs.dbInstanceIdentifier
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      snapshotId: $response.body#/dBSnapshot/dBSnapshotIdentifier
  - stepId: pollSnapshot
    description: >-
      Describe the snapshot and inspect its status. While the snapshot is still
      creating the workflow loops back to poll again; once it is available it
      proceeds to delete the instance.
    operationId: describeDBSnapshots
    parameters:
    - name: DBSnapshotIdentifier
      in: query
      value: $inputs.dbSnapshotIdentifier
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      snapshotStatus: $response.body#/dBSnapshots/0/status
    onSuccess:
    - name: stillCreating
      type: goto
      stepId: pollSnapshot
      criteria:
      - context: $response.body
        condition: $.dBSnapshots[0].status != 'available'
        type: jsonpath
    - name: snapshotReady
      type: goto
      stepId: deleteInstance
      criteria:
      - context: $response.body
        condition: $.dBSnapshots[0].status == 'available'
        type: jsonpath
  - stepId: deleteInstance
    description: >-
      Delete the source DB instance, retaining a final snapshot rather than
      skipping it.
    operationId: deleteDBInstance
    parameters:
    - name: DBInstanceIdentifier
      in: query
      value: $inputs.dbInstanceIdentifier
    - name: SkipFinalSnapshot
      in: query
      value: false
    - name: FinalDBSnapshotIdentifier
      in: query
      value: $inputs.finalDbSnapshotIdentifier
    successCriteria:
    - condition: $statusCode == 200
  outputs:
    snapshotId: $steps.createSnapshot.outputs.snapshotId
    snapshotStatus: $steps.pollSnapshot.outputs.snapshotStatus