Amazon DocumentDB Inventory Cluster and Instances

arazzo: 1.0.1
info:
  title: Amazon DocumentDB Inventory Cluster and Instances
  summary: Describe a cluster, then describe a member instance and the wider instance fleet.
  description: >-
    Builds a read-only inventory of an Amazon DocumentDB deployment by describing
    a named cluster, picking the first instance listed in its membership, and
    describing that instance in detail, then listing the broader instance fleet.
    The workflow uses the AWS query protocol, supplying the Action and Version in
    the query string, and spells out each request inline so the flow can be read
    and executed without opening the underlying OpenAPI description.
  version: 1.0.0
sourceDescriptions:
- name: docdbApi
  url: ../openapi/amazon-documentdb-openapi.yml
  type: openapi
workflows:
- workflowId: inventory-cluster-and-instances
  summary: Read a cluster and the details of its first member instance.
  description: >-
    Describes the cluster to read its membership, resolves the first member
    instance identifier, describes that instance, and then lists instances to
    surface the wider fleet.
  inputs:
    type: object
    required:
    - DBClusterIdentifier
    properties:
      DBClusterIdentifier:
        type: string
        description: The identifier of the cluster to inventory.
      MaxRecords:
        type: integer
        description: The maximum number of instance records to list.
        default: 100
  steps:
  - stepId: describeCluster
    description: Describe the cluster to read its status, endpoint and member list.
    operationId: describeDBClusters
    parameters:
    - name: Action
      in: query
      value: DescribeDBClusters
    - name: Version
      in: query
      value: '2014-10-31'
    - name: DBClusterIdentifier
      in: query
      value: $inputs.DBClusterIdentifier
    - name: MaxRecords
      in: query
      value: 1
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      status: $response.body#/DBClusters/0/Status
      endpoint: $response.body#/DBClusters/0/Endpoint
      firstMemberInstanceId: $response.body#/DBClusters/0/DBClusterMembers/0/DBInstanceIdentifier
  - stepId: describeMemberInstance
    description: >-
      Describe the first member instance resolved from the cluster membership to
      read its detailed status.
    operationId: describeDBInstances
    parameters:
    - name: Action
      in: query
      value: DescribeDBInstances
    - name: Version
      in: query
      value: '2014-10-31'
    - name: DBInstanceIdentifier
      in: query
      value: $steps.describeCluster.outputs.firstMemberInstanceId
    - name: MaxRecords
      in: query
      value: 1
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      instanceStatus: $response.body#/DBInstances/0/DBInstanceStatus
  - stepId: listInstances
    description: List the wider instance fleet to round out the inventory.
    operationId: describeDBInstances
    parameters:
    - name: Action
      in: query
      value: DescribeDBInstances
    - name: Version
      in: query
      value: '2014-10-31'
    - name: MaxRecords
      in: query
      value: $inputs.MaxRecords
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      marker: $response.body#/Marker
  outputs:
    DBClusterIdentifier: $inputs.DBClusterIdentifier
    clusterStatus: $steps.describeCluster.outputs.status
    clusterEndpoint: $steps.describeCluster.outputs.endpoint
    memberInstanceStatus: $steps.describeMemberInstance.outputs.instanceStatus