UiPath Discover Extractors and Extract a Document

arazzo: 1.0.1
info:
  title: UiPath Discover Extractors and Extract a Document
  summary: Resolve a project, discover its extractors, digitize a document, and extract data with polling.
  description: >-
    A discovery-driven Document Understanding pipeline. The workflow lists the
    available projects to resolve a project by name, lists the extractors
    configured in that project to confirm a document type is supported, digitizes
    a document, and then runs an asynchronous extraction with polling until the
    fields are ready. The poll loop repeats while the async status is NotStarted
    or Running. 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: documentUnderstandingApi
  url: ../openapi/uipath-document-understanding-openapi.yml
  type: openapi
workflows:
- workflowId: discover-and-extract-document
  summary: Resolve a project, discover extractors, digitize, and extract with polling.
  description: >-
    Resolves a project by name, discovers its extractors, digitizes a document,
    and runs an async extraction with polling.
  inputs:
    type: object
    required:
    - projectName
    - documentBase64
    - contentType
    - documentTypeId
    properties:
      projectName:
        type: string
        description: Display name of the Document Understanding project to resolve.
      documentBase64:
        type: string
        description: Base64-encoded document content to digitize.
      contentType:
        type: string
        description: MIME type of the document (e.g. image/jpeg, application/pdf).
      documentTypeId:
        type: string
        description: Document type identifier to apply during extraction.
  steps:
  - stepId: findProject
    description: >-
      List the available Document Understanding projects to resolve the project
      ID for the supplied project name.
    operationId: listProjects
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      projectId: $response.body#/projects/0/id
      projectName: $response.body#/projects/0/name
  - stepId: discoverExtractors
    description: >-
      List the extractors configured in the resolved project to confirm the
      target document type can be extracted.
    operationId: listExtractors
    parameters:
    - name: projectId
      in: path
      value: $steps.findProject.outputs.projectId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      firstExtractorId: $response.body#/extractors/0/id
  - stepId: digitize
    description: >-
      Submit the document for digitization to obtain the document ID used by the
      extraction step.
    operationId: digitizeDocument
    parameters:
    - name: projectId
      in: path
      value: $steps.findProject.outputs.projectId
    requestBody:
      contentType: application/json
      payload:
        contentType: $inputs.contentType
        documentBase64: $inputs.documentBase64
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      documentId: $response.body#/documentId
  - stepId: startExtraction
    description: >-
      Start an asynchronous extraction job for the digitized document using the
      supplied document type and capture the request ID for polling.
    operationId: extractDocumentAsync
    parameters:
    - name: projectId
      in: path
      value: $steps.findProject.outputs.projectId
    requestBody:
      contentType: application/json
      payload:
        documentId: $steps.digitize.outputs.documentId
        documentTypeId: $inputs.documentTypeId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      extractionRequestId: $response.body#/requestId
  - stepId: pollExtraction
    description: >-
      Retrieve the extraction result by its request ID. Loop back while the job
      is still NotStarted or Running; otherwise record the final result.
    operationId: getExtractionResult
    parameters:
    - name: projectId
      in: path
      value: $steps.findProject.outputs.projectId
    - name: requestId
      in: path
      value: $steps.startExtraction.outputs.extractionRequestId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      extractionStatus: $response.body#/status
      extractionResult: $response.body#/result
    onSuccess:
    - name: stillExtracting
      type: goto
      stepId: pollExtraction
      criteria:
      - context: $response.body
        condition: $.status == 'NotStarted' || $.status == 'Running'
        type: jsonpath
  outputs:
    projectId: $steps.findProject.outputs.projectId
    documentId: $steps.digitize.outputs.documentId
    extractionStatus: $steps.pollExtraction.outputs.extractionStatus
    extractionResult: $steps.pollExtraction.outputs.extractionResult