Medplum FHIR Resource Versioning

arazzo: 1.0.1
info:
  title: Medplum FHIR Resource Versioning
  summary: Create a FHIR resource, update it to mint a new version, read its history, then read a specific version.
  description: >-
    A FHIR R4 resource history and versioning flow against the Medplum FHIR R4
    backend. A resource is created and then updated to produce a new versionId,
    the versioned resource history is read, and a specific historical version is
    read back by versionId. This exercises the FHIR RESTful API vread and history
    interactions and the resource meta.versionId that drives optimistic
    concurrency. Every step inlines its request so the flow is self-contained.
  version: 1.0.0
sourceDescriptions:
- name: medplumFhir
  url: ../openapi/medplum-openapi-original.yml
  type: openapi
workflows:
- workflowId: resource-versioning
  summary: Create and update a FHIR resource, then read its history and a specific version.
  description: >-
    Creates a FHIR R4 resource, updates it to mint a new versionId, reads the
    resource history, and reads the specific version by versionId.
  inputs:
    type: object
    required:
    - resourceType
    - resource
    - updatedResource
    properties:
      resourceType:
        type: string
        description: The FHIR resource type to operate on (e.g. Patient, Observation).
      resource:
        type: object
        description: The FHIR R4 resource body to create.
      updatedResource:
        type: object
        description: The FHIR R4 resource body to write on update.
  steps:
  - stepId: createResource
    description: Create the FHIR resource of the requested type.
    operationId: createResource
    parameters:
    - name: resourceType
      in: path
      value: $inputs.resourceType
    requestBody:
      contentType: application/fhir+json
      payload: $inputs.resource
    successCriteria:
    - condition: $statusCode == 201
    outputs:
      resourceId: $response.body#/id
  - stepId: updateResource
    description: Update the resource by id to mint a new version.
    operationId: updateResource
    parameters:
    - name: resourceType
      in: path
      value: $inputs.resourceType
    - name: id
      in: path
      value: $steps.createResource.outputs.resourceId
    requestBody:
      contentType: application/fhir+json
      payload: $inputs.updatedResource
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      versionId: $response.body#/meta/versionId
  - stepId: readHistory
    description: Read the versioned history for the resource.
    operationId: readResourceHistory
    parameters:
    - name: resourceType
      in: path
      value: $inputs.resourceType
    - name: id
      in: path
      value: $steps.createResource.outputs.resourceId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      history: $response.body
  - stepId: readVersion
    description: Read the specific historical version by versionId.
    operationId: readVersion
    parameters:
    - name: resourceType
      in: path
      value: $inputs.resourceType
    - name: id
      in: path
      value: $steps.createResource.outputs.resourceId
    - name: versionId
      in: path
      value: $steps.updateResource.outputs.versionId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      version: $response.body
  outputs:
    resourceId: $steps.createResource.outputs.resourceId
    versionId: $steps.updateResource.outputs.versionId
    history: $steps.readHistory.outputs.history
    version: $steps.readVersion.outputs.version