arazzo: 1.0.1
info:
  title: Amazon ElastiCache Clone Cluster Config
  summary: Read a source cluster's config, create a matching cluster, and poll it.
  description: >-
    Stands up a new Amazon ElastiCache cache cluster that mirrors the engine and
    node configuration of an existing one. The workflow describes a source
    cluster to read its Engine, EngineVersion, CacheNodeType and node count, then
    submits a CreateCacheCluster request that reuses those values under a new
    identifier, and finally polls DescribeCacheClusters until the clone reports
    it is available. 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: clone-cluster-config
  summary: Create a new cluster that reuses the configuration of an existing one.
  description: >-
    Reads a source cluster's engine and node configuration and creates a new
    cluster from those values, then polls until the new cluster is available.
  inputs:
    type: object
    required:
    - SourceCacheClusterId
    - NewCacheClusterId
    properties:
      SourceCacheClusterId:
        type: string
        description: The identifier of the existing cluster whose config to copy.
      NewCacheClusterId:
        type: string
        description: The identifier for the new cloned cluster.
  steps:
  - stepId: describeSource
    description: >-
      Describe the source cluster with node information to read the engine and
      node configuration that the clone should reuse. The CacheClusterId query
      parameter scopes the description to the source cluster.
    operationId: describeCacheClusters
    parameters:
    - name: Action
      in: query
      value: DescribeCacheClusters
    - name: Version
      in: query
      value: '2015-02-02'
    - name: CacheClusterId
      in: query
      value: $inputs.SourceCacheClusterId
    - name: ShowCacheNodeInfo
      in: query
      value: true
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      sourceEngine: $response.body#/CacheClusters/0/Engine
      sourceEngineVersion: $response.body#/CacheClusters/0/EngineVersion
      sourceNodeType: $response.body#/CacheClusters/0/CacheNodeType
      sourceNumNodes: $response.body#/CacheClusters/0/NumCacheNodes
  - stepId: createClone
    description: >-
      Submit a CreateCacheCluster request that reuses the source cluster's engine
      and node configuration under the new identifier. 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.NewCacheClusterId
        Engine: $steps.describeSource.outputs.sourceEngine
        EngineVersion: $steps.describeSource.outputs.sourceEngineVersion
        CacheNodeType: $steps.describeSource.outputs.sourceNodeType
        NumCacheNodes: $steps.describeSource.outputs.sourceNumNodes
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      cloneId: $response.body#/CacheCluster/CacheClusterId
      cloneStatus: $response.body#/CacheCluster/CacheClusterStatus
  - stepId: pollClone
    description: >-
      Describe the cloned cluster and confirm it has reached an available status.
      The CacheClusterId query parameter scopes the description to the clone.
    operationId: describeCacheClusters
    parameters:
    - name: Action
      in: query
      value: DescribeCacheClusters
    - name: Version
      in: query
      value: '2015-02-02'
    - name: CacheClusterId
      in: query
      value: $steps.createClone.outputs.cloneId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      cloneStatus: $response.body#/CacheClusters/0/CacheClusterStatus
  outputs:
    sourceCacheClusterId: $inputs.SourceCacheClusterId
    cloneCacheClusterId: $steps.createClone.outputs.cloneId
    cloneStatus: $steps.pollClone.outputs.cloneStatus