Amazon Rekognition Quality Gated Enrollment

arazzo: 1.0.1
info:
  title: Amazon Rekognition Quality Gated Enrollment
  summary: Detect a face and check its quality, then index it into a collection only when a face is present.
  description: >-
    A quality-gated enrollment flow for Amazon Rekognition. The workflow runs
    DetectFaces with full attributes to confirm a usable face is present in the
    enrollment image and capture its quality, branches to index the face only
    when a face was found, and adds it to the target collection. Each step
    spells out its AWS JSON 1.1 request inline, including the protocol-required
    X-Amz-Target header.
  version: 1.0.0
sourceDescriptions:
- name: rekognitionApi
  url: ../openapi/amazon-rekognition-openapi.yml
  type: openapi
workflows:
- workflowId: quality-gated-enrollment
  summary: Detect and quality-check a face, then index it into a collection.
  description: >-
    Confirms a usable face exists in the enrollment image before indexing it
    into the target collection, gating enrollment on face presence.
  inputs:
    type: object
    required:
    - collectionId
    - bucket
    - name
    - externalImageId
    properties:
      collectionId:
        type: string
        description: ID of the collection to enroll the face into.
      bucket:
        type: string
        description: S3 bucket holding the enrollment image.
      name:
        type: string
        description: S3 object key of the enrollment image.
      externalImageId:
        type: string
        description: External identifier to assign to the indexed face.
  steps:
  - stepId: detectFaces
    description: Detect faces and full quality attributes in the enrollment image.
    operationId: detectFaces
    parameters:
    - name: X-Amz-Target
      in: header
      value: RekognitionService.DetectFaces
    requestBody:
      contentType: application/x-amz-json-1.1
      payload:
        Image:
          S3Object:
            Bucket: $inputs.bucket
            Name: $inputs.name
        Attributes:
        - ALL
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      faceDetails: $response.body#/FaceDetails
    onSuccess:
    - name: faceFound
      type: goto
      stepId: indexFaces
      criteria:
      - context: $response.body
        condition: $.FaceDetails[0] empty false
        type: jsonpath
  - stepId: indexFaces
    description: Index the validated face into the target collection with a quality filter.
    operationId: indexFaces
    parameters:
    - name: X-Amz-Target
      in: header
      value: RekognitionService.IndexFaces
    requestBody:
      contentType: application/x-amz-json-1.1
      payload:
        CollectionId: $inputs.collectionId
        Image:
          S3Object:
            Bucket: $inputs.bucket
            Name: $inputs.name
        ExternalImageId: $inputs.externalImageId
        MaxFaces: 1
        QualityFilter: AUTO
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      faceRecords: $response.body#/FaceRecords
      unindexedFaces: $response.body#/UnindexedFaces
  outputs:
    faceDetails: $steps.detectFaces.outputs.faceDetails
    faceRecords: $steps.indexFaces.outputs.faceRecords
    unindexedFaces: $steps.indexFaces.outputs.unindexedFaces