Azure DevOps Create a Parent and Linked Child Work Item

arazzo: 1.0.1
info:
  title: Azure DevOps Create a Parent and Linked Child Work Item
  summary: Create a parent work item, create a child, and link them hierarchically.
  description: >-
    Builds a two-level work item hierarchy in Azure Boards. The workflow creates
    a parent work item (for example a User Story), creates a child work item (for
    example a Task), and then patches the child with a relation operation that
    links it to the parent using the System.LinkTypes.Hierarchy-Reverse link
    type pointing at the parent's API URL. All three writes use the
    application/json-patch+json media type required by the work item endpoints.
    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: workItemsApi
  url: ../openapi/azure-devops-work-items-api-openapi.yml
  type: openapi
workflows:
- workflowId: create-linked-child-work-item
  summary: Create a parent and child work item, then link the child to the parent.
  description: >-
    Creates a parent work item, creates a child work item, and adds a
    parent/child hierarchy relation between them.
  inputs:
    type: object
    required:
    - apiVersion
    - parentType
    - parentTitle
    - childType
    - childTitle
    properties:
      apiVersion:
        type: string
        description: Azure DevOps REST API version (e.g. 7.1).
      parentType:
        type: string
        description: Work item type for the parent (e.g. User Story).
      parentTitle:
        type: string
        description: Title for the parent work item.
      childType:
        type: string
        description: Work item type for the child (e.g. Task).
      childTitle:
        type: string
        description: Title for the child work item.
      accessToken:
        type: string
        description: Azure DevOps bearer (OAuth 2.0) access token.
  steps:
  - stepId: createParent
    description: >-
      Create the parent work item with a JSON Patch document setting its title.
    operationId: workItems_create
    parameters:
    - name: api-version
      in: query
      value: $inputs.apiVersion
    - name: type
      in: path
      value: $inputs.parentType
    requestBody:
      contentType: application/json-patch+json
      payload:
      - op: add
        path: /fields/System.Title
        value: $inputs.parentTitle
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      parentId: $response.body#/id
      parentUrl: $response.body#/url
  - stepId: createChild
    description: >-
      Create the child work item with a JSON Patch document setting its title.
    operationId: workItems_create
    parameters:
    - name: api-version
      in: query
      value: $inputs.apiVersion
    - name: type
      in: path
      value: $inputs.childType
    requestBody:
      contentType: application/json-patch+json
      payload:
      - op: add
        path: /fields/System.Title
        value: $inputs.childTitle
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      childId: $response.body#/id
  - stepId: linkChildToParent
    description: >-
      Patch the child work item with a relations add operation that creates a
      Hierarchy-Reverse link pointing at the parent's API URL.
    operationId: workItems_update
    parameters:
    - name: api-version
      in: query
      value: $inputs.apiVersion
    - name: id
      in: path
      value: $steps.createChild.outputs.childId
    requestBody:
      contentType: application/json-patch+json
      payload:
      - op: add
        path: /relations/-
        value:
          rel: System.LinkTypes.Hierarchy-Reverse
          url: $steps.createParent.outputs.parentUrl
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      linkedRev: $response.body#/rev
  outputs:
    parentId: $steps.createParent.outputs.parentId
    childId: $steps.createChild.outputs.childId
    linkedRev: $steps.linkChildToParent.outputs.linkedRev