Buildkite Cancel Running Build

arazzo: 1.0.1
info:
  title: Buildkite Cancel Running Build
  summary: Find the latest running build on a pipeline and cancel it.
  description: >-
    A stop-the-line flow for halting in-progress work. The workflow lists builds
    for a pipeline, captures the most recent build and its state, and when that
    build is still running or scheduled it issues a cancel and reads the build
    back to confirm it has moved into a canceling or canceled state. 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: buildkiteRestApi
  url: ../openapi/buildkite-rest-api-openapi.yml
  type: openapi
workflows:
- workflowId: cancel-running-build
  summary: Cancel the most recent running build of a pipeline.
  description: >-
    Lists builds, and when the most recent one is still in progress cancels it
    and confirms the cancellation.
  inputs:
    type: object
    required:
    - org
    - pipeline
    properties:
      org:
        type: string
        description: Organization slug that owns the pipeline.
      pipeline:
        type: string
        description: Pipeline slug to cancel the latest build of.
  steps:
  - stepId: listBuilds
    description: >-
      List builds for the pipeline and capture the most recent build number and
      state.
    operationId: listBuilds
    parameters:
    - name: org
      in: path
      value: $inputs.org
    - name: pipeline
      in: path
      value: $inputs.pipeline
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      latestNumber: $response.body#/0/number
      latestState: $response.body#/0/state
    onSuccess:
    - name: inProgress
      type: goto
      stepId: cancelBuild
      criteria:
      - context: $response.body
        condition: $[0].state == "running" || $[0].state == "scheduled"
        type: jsonpath
    onFailure:
    - name: nothingToCancel
      type: end
      criteria:
      - context: $response.body
        condition: $[0].state != "running" && $[0].state != "scheduled"
        type: jsonpath
  - stepId: cancelBuild
    description: >-
      Cancel the most recent in-progress build.
    operationId: cancelBuild
    parameters:
    - name: org
      in: path
      value: $inputs.org
    - name: pipeline
      in: path
      value: $inputs.pipeline
    - name: number
      in: path
      value: $steps.listBuilds.outputs.latestNumber
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      cancelState: $response.body#/state
  - stepId: confirmCancel
    description: >-
      Read the build back to confirm it has moved into a canceling or canceled
      state.
    operationId: getBuild
    parameters:
    - name: org
      in: path
      value: $inputs.org
    - name: pipeline
      in: path
      value: $inputs.pipeline
    - name: number
      in: path
      value: $steps.listBuilds.outputs.latestNumber
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      finalState: $response.body#/state
      webUrl: $response.body#/web_url
  outputs:
    canceledNumber: $steps.listBuilds.outputs.latestNumber
    finalState: $steps.confirmCancel.outputs.finalState