Amazon Elastic Transcoder Pause Pipeline and Cancel a Submitted Job

arazzo: 1.0.1
info:
  title: Amazon Elastic Transcoder Pause Pipeline and Cancel a Submitted Job
  summary: Pause a pipeline so no new jobs start, then cancel a job that is still in the Submitted state.
  description: >-
    Elastic Transcoder can only cancel jobs that are still Submitted, so the
    safe way to cancel is to pause the pipeline first to stop it picking up
    work. This workflow sets the pipeline status to Paused, reads the target job
    to confirm it is still Submitted, and only then issues the cancel. 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: elasticTranscoderApi
  url: ../openapi/amazon-elastic-transcoder-openapi.yml
  type: openapi
workflows:
- workflowId: pause-pipeline-cancel-job
  summary: Pause a pipeline and cancel a still-submitted job.
  description: >-
    Pauses the pipeline to stop it starting new work, reads the job to confirm
    it is still Submitted, and cancels it only when the cancel is permitted.
  inputs:
    type: object
    required:
    - pipelineId
    - jobId
    properties:
      pipelineId:
        type: string
        description: The Id of the pipeline to pause before cancelling the job.
      jobId:
        type: string
        description: The Id of the job to cancel (must still be Submitted).
  steps:
  - stepId: pausePipeline
    description: >-
      Set the pipeline status to Paused so Elastic Transcoder stops starting new
      jobs while the cancel is prepared.
    operationId: UpdatePipelineStatus
    parameters:
    - name: Id
      in: path
      value: $inputs.pipelineId
    requestBody:
      contentType: application/json
      payload:
        Status: Paused
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      pipelineStatus: $response.body#/Pipeline/Status
  - stepId: readJob
    description: >-
      Read the job and branch: only proceed to cancel when the job is still in
      the Submitted state, since cancel is rejected once processing begins.
    operationId: ReadJob
    parameters:
    - name: Id
      in: path
      value: $inputs.jobId
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      jobStatus: $response.body#/Job/Status
    onSuccess:
    - name: cancellable
      type: goto
      stepId: cancelJob
      criteria:
      - context: $response.body
        condition: $.Job.Status == 'Submitted'
        type: jsonpath
    - name: notCancellable
      type: end
      criteria:
      - context: $response.body
        condition: $.Job.Status != 'Submitted'
        type: jsonpath
  - stepId: cancelJob
    description: >-
      Cancel the still-submitted job now that the pipeline is paused and the job
      is confirmed cancellable.
    operationId: CancelJob
    parameters:
    - name: Id
      in: path
      value: $inputs.jobId
    successCriteria:
    - condition: $statusCode == 202
    outputs:
      cancelStatusCode: $statusCode
  outputs:
    pipelineStatus: $steps.pausePipeline.outputs.pipelineStatus
    jobStatus: $steps.readJob.outputs.jobStatus
    cancelStatusCode: $steps.cancelJob.outputs.cancelStatusCode