Buildkite Stop Disconnected Agent

arazzo: 1.0.1
info:
  title: Buildkite Stop Disconnected Agent
  summary: List agents, inspect one, and stop it when it is no longer connected.
  description: >-
    A fleet-hygiene flow for reaping stale agents. The workflow lists the agents
    in an organization, reads the supplied agent to capture its connection state,
    and when that agent is no longer connected it issues a stop so the slot is
    released. This keeps an organization's agent inventory clean of agents that
    have lost their connection. 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: stop-disconnected-agent
  summary: Stop an agent that is no longer connected.
  description: >-
    Lists agents, reads the supplied agent, and stops it when its connection
    state is not connected.
  inputs:
    type: object
    required:
    - org
    - id
    properties:
      org:
        type: string
        description: Organization slug that owns the agents.
      id:
        type: string
        description: UUID of the agent to inspect and potentially stop.
  steps:
  - stepId: listAgents
    description: >-
      List the agents in the organization to provide context for the target
      agent.
    operationId: listAgents
    parameters:
    - name: org
      in: path
      value: $inputs.org
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      agents: $response.body
  - stepId: getAgent
    description: >-
      Read the supplied agent and capture its connection state.
    operationId: getAgent
    parameters:
    - name: org
      in: path
      value: $inputs.org
    - name: id
      in: path
      value: $inputs.id
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      connectionState: $response.body#/connection_state
      name: $response.body#/name
    onSuccess:
    - name: notConnected
      type: goto
      stepId: stopAgent
      criteria:
      - context: $response.body
        condition: $.connection_state != "connected"
        type: jsonpath
    onFailure:
    - name: stillConnected
      type: end
      criteria:
      - context: $response.body
        condition: $.connection_state == "connected"
        type: jsonpath
  - stepId: stopAgent
    description: >-
      Stop the agent, releasing its slot in the organization.
    operationId: stopAgent
    parameters:
    - name: org
      in: path
      value: $inputs.org
    - name: id
      in: path
      value: $inputs.id
    successCriteria:
    - condition: $statusCode == 204
  outputs:
    agentName: $steps.getAgent.outputs.name
    connectionState: $steps.getAgent.outputs.connectionState