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OpenAPI Specification

openapi: 3.2.0
info:
  title: LittleHorse REST External Events Workflow Specs API
  description: The LittleHorse REST API provides HTTP endpoints for managing workflow specifications (WfSpec), workflow runs (WfRun), task definitions (TaskDef), external event definitions, user tasks, and other resources in the LittleHorse workflow engine.
  version: 0.12.0
  contact:
    name: LittleHorse
    url: https://littlehorse.dev/
  license:
    name: Server Side Public License
    url: https://www.mongodb.com/licensing/server-side-public-license
servers:
- url: '{baseUrl}'
  description: LittleHorse Server
  variables:
    baseUrl:
      default: http://localhost:2023
tags:
- name: Workflow Specs
paths:
  /wfSpec:
    get:
      operationId: listWfSpecs
      summary: List workflow specifications
      description: Returns all registered workflow specifications.
      tags:
      - Workflow Specs
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  results:
                    type: array
                    items:
                      $ref: '#/components/schemas/WfSpec'
                  bookmark:
                    type: string
    post:
      operationId: putWfSpec
      summary: Create or update a workflow specification
      description: Creates or updates a workflow specification.
      tags:
      - Workflow Specs
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PutWfSpecRequest'
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WfSpec'
  /wfSpec/{name}:
    get:
      operationId: getWfSpec
      summary: Get a workflow specification
      description: Returns a specific workflow specification by name.
      tags:
      - Workflow Specs
      parameters:
      - name: name
        in: path
        required: true
        schema:
          type: string
      - name: majorVersion
        in: query
        schema:
          type: integer
      - name: revision
        in: query
        schema:
          type: integer
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/WfSpec'
    delete:
      operationId: deleteWfSpec
      summary: Delete a workflow specification
      description: Deletes a workflow specification.
      tags:
      - Workflow Specs
      parameters:
      - name: name
        in: path
        required: true
        schema:
          type: string
      - name: majorVersion
        in: query
        required: true
        schema:
          type: integer
      - name: revision
        in: query
        required: true
        schema:
          type: integer
      responses:
        '200':
          description: WfSpec deleted
components:
  schemas:
    WfSpec:
      type: object
      properties:
        id:
          type: object
          properties:
            name:
              type: string
            majorVersion:
              type: integer
            revision:
              type: integer
        status:
          type: string
        createdAt:
          type: string
          format: date-time
        threadSpecs:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/ThreadSpec'
        entrypointThreadName:
          type: string
        retentionPolicy:
          type: object
    ThreadSpec:
      type: object
      properties:
        nodes:
          type: object
          additionalProperties:
            type: object
        variableDefs:
          type: array
          items:
            type: object
        interruptDefs:
          type: array
          items:
            type: object
    PutWfSpecRequest:
      type: object
      required:
      - name
      - threadSpecs
      - entrypointThreadName
      properties:
        name:
          type: string
        threadSpecs:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/ThreadSpec'
        entrypointThreadName:
          type: string
        retentionPolicy:
          type: object