Amazon DataZone Discover and Subscribe

arazzo: 1.0.1
info:
  title: Amazon DataZone Discover and Subscribe
  summary: Search catalog listings, then raise a subscription request for the first match.
  description: >-
    Drives the data-consumer access pattern in Amazon DataZone. It searches the
    catalog listings in a domain, branches on whether any listing was returned,
    and when a match is found it raises a subscription request that names the
    discovered listing and the requesting project as the subscribing principal.
    When no listing matches, the workflow ends without creating a request. 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: listingsApi
  url: ../openapi/amazon-datazone-listings-api-openapi.yml
  type: openapi
- name: subscriptionsApi
  url: ../openapi/amazon-datazone-subscriptions-api-openapi.yml
  type: openapi
workflows:
- workflowId: discover-and-subscribe
  summary: Find a catalog listing and request a subscription to it for a project.
  description: >-
    Searches listings in the domain catalog, and when at least one listing is
    returned, creates a subscription request binding the first listing to the
    requesting project.
  inputs:
    type: object
    required:
    - domainIdentifier
    - subscribingProjectIdentifier
    - requestReason
    properties:
      domainIdentifier:
        type: string
        description: The identifier of the domain whose catalog is searched.
      subscribingProjectIdentifier:
        type: string
        description: The project identifier that will own the subscription.
      requestReason:
        type: string
        description: The business justification for the subscription request.
  steps:
  - stepId: searchListings
    description: >-
      Search the domain catalog for available asset listings to subscribe to.
    operationId: searchListings
    parameters:
    - name: domainIdentifier
      in: path
      value: $inputs.domainIdentifier
    - name: maxResults
      in: query
      value: 1
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      firstListingId: $response.body#/items/0/id
    onSuccess:
    - name: listingFound
      type: goto
      stepId: requestSubscription
      criteria:
      - context: $response.body
        condition: $.items.length > 0
        type: jsonpath
    - name: noListing
      type: end
      criteria:
      - context: $response.body
        condition: $.items.length == 0
        type: jsonpath
  - stepId: requestSubscription
    description: >-
      Raise a subscription request for the discovered listing on behalf of the
      subscribing project. The request is created in the PENDING state.
    operationId: createSubscriptionRequest
    parameters:
    - name: domainIdentifier
      in: path
      value: $inputs.domainIdentifier
    requestBody:
      contentType: application/json
      payload:
        requestReason: $inputs.requestReason
        subscribedListings:
        - identifier: $steps.searchListings.outputs.firstListingId
        subscribedPrincipals:
        - project:
            identifier: $inputs.subscribingProjectIdentifier
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      subscriptionRequestId: $response.body#/id
      status: $response.body#/status
  outputs:
    listingId: $steps.searchListings.outputs.firstListingId
    subscriptionRequestId: $steps.requestSubscription.outputs.subscriptionRequestId
    status: $steps.requestSubscription.outputs.status