Amazon ElastiCache Cache Cluster Lifecycle

arazzo: 1.0.1
info:
  title: Amazon ElastiCache Cache Cluster Lifecycle
  summary: Create a cache cluster, confirm it, then delete it with a final snapshot.
  description: >-
    Walks an Amazon ElastiCache cache cluster through a full short-lived
    lifecycle. The workflow creates a cluster, polls DescribeCacheClusters to
    confirm it has come online, and then deletes the cluster while capturing a
    final snapshot so any data is preserved. This is useful for ephemeral or
    test clusters that must be stood up, exercised, and torn down cleanly. Every
    step spells out its request inline so the flow can be read and executed
    without opening the underlying OpenAPI description. Requests use the AWS query
    (x-www-form-urlencoded) protocol with the Action and Version query parameters
    that the ElastiCache API requires.
  version: 1.0.0
sourceDescriptions:
- name: elastiCacheApi
  url: ../openapi/amazon-elasticache-openapi.yml
  type: openapi
workflows:
- workflowId: cache-cluster-lifecycle
  summary: Create, confirm, and tear down a cache cluster with a final snapshot.
  description: >-
    Creates a cache cluster, polls until it reports it is available, then deletes
    it while capturing a final snapshot.
  inputs:
    type: object
    required:
    - CacheClusterId
    - Engine
    - CacheNodeType
    - NumCacheNodes
    - FinalSnapshotIdentifier
    properties:
      CacheClusterId:
        type: string
        description: The node group (shard) identifier for the new cluster.
      Engine:
        type: string
        description: The cache engine to run, either memcached or redis.
      CacheNodeType:
        type: string
        description: The compute and memory capacity of the nodes in the node group.
      NumCacheNodes:
        type: integer
        description: The initial number of cache nodes in the cluster.
      FinalSnapshotIdentifier:
        type: string
        description: The name to give the final snapshot taken before deletion.
  steps:
  - stepId: createCluster
    description: >-
      Submit a CreateCacheCluster request for the supplied identifier and node
      configuration. The cluster attributes travel in the form-encoded body.
    operationId: createCacheCluster
    parameters:
    - name: Action
      in: query
      value: CreateCacheCluster
    - name: Version
      in: query
      value: '2015-02-02'
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        CacheClusterId: $inputs.CacheClusterId
        Engine: $inputs.Engine
        CacheNodeType: $inputs.CacheNodeType
        NumCacheNodes: $inputs.NumCacheNodes
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      clusterId: $response.body#/CacheCluster/CacheClusterId
      status: $response.body#/CacheCluster/CacheClusterStatus
  - stepId: pollCluster
    description: >-
      Describe the just-created cluster and confirm it has reached an available
      status before exercising or deleting it.
    operationId: describeCacheClusters
    parameters:
    - name: Action
      in: query
      value: DescribeCacheClusters
    - name: Version
      in: query
      value: '2015-02-02'
    - name: CacheClusterId
      in: query
      value: $steps.createCluster.outputs.clusterId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      clusterStatus: $response.body#/CacheClusters/0/CacheClusterStatus
  - stepId: deleteCluster
    description: >-
      Delete the cluster while naming a FinalSnapshotIdentifier so a final
      snapshot is taken before teardown. The cluster identifier and snapshot
      name travel in the form-encoded body.
    operationId: deleteCacheCluster
    parameters:
    - name: Action
      in: query
      value: DeleteCacheCluster
    - name: Version
      in: query
      value: '2015-02-02'
    requestBody:
      contentType: application/x-www-form-urlencoded
      payload:
        CacheClusterId: $steps.createCluster.outputs.clusterId
        FinalSnapshotIdentifier: $inputs.FinalSnapshotIdentifier
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      deletedClusterId: $steps.createCluster.outputs.clusterId
  outputs:
    cacheClusterId: $steps.createCluster.outputs.clusterId
    cacheClusterStatus: $steps.pollCluster.outputs.clusterStatus
    deletedClusterId: $steps.deleteCluster.outputs.deletedClusterId