Azure Container Apps Restart Active Revision

arazzo: 1.0.1
info:
  title: Azure Container Apps Restart Active Revision
  summary: Restart the active revision of an app and poll its revision replicas until it is running again.
  description: >-
    Restarting a revision recreates its replicas, which is the closest the API
    supports to a replica-level recycle. This workflow reads a container app to
    find its latest revision, restarts that revision, then polls the revision
    resource until its runningState returns to Running, surfacing the replica
    count along the way. Every step spells out its request inline so the flow can
    be read and executed without opening the underlying OpenAPI description.

    Adaptation note: the spec exposes no dedicated replica list or replica
    restart operation, so replica recycling is driven through the revision
    restart operation and observed via the revision's replicas and runningState
    fields.
  version: 1.0.0
sourceDescriptions:
- name: containerAppsApi
  url: ../openapi/azure-container-apps-openapi.yml
  type: openapi
workflows:
- workflowId: restart-active-revision
  summary: Restart an app's latest revision and wait for its replicas to come back running.
  description: >-
    Resolves the app's latest revision name, restarts that revision, and polls
    the revision until its runningState reports Running, exposing the replica
    count.
  inputs:
    type: object
    required:
    - subscriptionId
    - resourceGroupName
    - containerAppName
    properties:
      subscriptionId:
        type: string
        description: The Azure subscription ID.
      resourceGroupName:
        type: string
        description: The name of the resource group.
      containerAppName:
        type: string
        description: The name of the container app.
      apiVersion:
        type: string
        description: Client API version.
        default: '2023-05-01'
  steps:
  - stepId: getApp
    description: >-
      Read the container app to resolve the name of its latest revision before
      restarting it.
    operationId: ContainerApps_Get
    parameters:
    - name: subscriptionId
      in: path
      value: $inputs.subscriptionId
    - name: resourceGroupName
      in: path
      value: $inputs.resourceGroupName
    - name: containerAppName
      in: path
      value: $inputs.containerAppName
    - name: api-version
      in: query
      value: $inputs.apiVersion
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      latestRevisionName: $response.body#/properties/latestRevisionName
  - stepId: restartRevision
    description: >-
      Restart the app's latest revision, recreating its replicas.
    operationId: ContainerAppsRevisions_RestartRevision
    parameters:
    - name: subscriptionId
      in: path
      value: $inputs.subscriptionId
    - name: resourceGroupName
      in: path
      value: $inputs.resourceGroupName
    - name: containerAppName
      in: path
      value: $inputs.containerAppName
    - name: revisionName
      in: path
      value: $steps.getApp.outputs.latestRevisionName
    - name: api-version
      in: query
      value: $inputs.apiVersion
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      statusCode: $statusCode
  - stepId: pollRevision
    description: >-
      Read the revision and check its runningState, looping while it is still
      processing and ending once its replicas report Running.
    operationId: ContainerAppsRevisions_GetRevision
    parameters:
    - name: subscriptionId
      in: path
      value: $inputs.subscriptionId
    - name: resourceGroupName
      in: path
      value: $inputs.resourceGroupName
    - name: containerAppName
      in: path
      value: $inputs.containerAppName
    - name: revisionName
      in: path
      value: $steps.getApp.outputs.latestRevisionName
    - name: api-version
      in: query
      value: $inputs.apiVersion
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      runningState: $response.body#/properties/runningState
      replicas: $response.body#/properties/replicas
      healthState: $response.body#/properties/healthState
    onSuccess:
    - name: revisionRunning
      type: end
      criteria:
      - context: $response.body
        condition: $.properties.runningState == "Running"
        type: jsonpath
    - name: revisionFailed
      type: end
      criteria:
      - context: $response.body
        condition: $.properties.runningState == "Failed" || $.properties.runningState == "Degraded"
        type: jsonpath
    - name: keepPolling
      type: goto
      stepId: pollRevision
      criteria:
      - context: $response.body
        condition: $.properties.runningState == "Processing"
        type: jsonpath
  outputs:
    revisionName: $steps.getApp.outputs.latestRevisionName
    runningState: $steps.pollRevision.outputs.runningState
    replicas: $steps.pollRevision.outputs.replicas