Amazon Elastic Load Balancing Add a Path-Based Maintenance Rule

arazzo: 1.0.1
info:
  title: Amazon Elastic Load Balancing Add a Path-Based Maintenance Rule
  summary: Attach a path-pattern fixed-response rule to a listener and confirm it.
  description: >-
    Adds a path-based maintenance page to an existing listener without any
    backend. It creates a listener rule whose path-pattern condition matches a
    supplied URL path and whose action returns a fixed HTTP response, then reads
    the listener's rules back to confirm the rule is in place. This is the
    common pattern for serving a 503 maintenance page on a specific path. Each
    step spells out its request inline so the flow can be read and executed
    without opening the underlying OpenAPI description. The Elastic Load
    Balancing v2 API uses the AWS query protocol, so every operation is a GET
    whose inputs are carried as query parameters rather than a request body.
  version: 1.0.0
sourceDescriptions:
- name: elbv2Api
  url: ../openapi/amazon-elastic-load-balancing-openapi.yml
  type: openapi
workflows:
- workflowId: add-path-maintenance-rule
  summary: Create a path-pattern fixed-response rule and confirm it on the listener.
  description: >-
    Chains createRule and describeRules so a fixed-response maintenance rule is
    attached to a listener path and verified.
  inputs:
    type: object
    required:
    - listenerArn
    - pathPattern
    - priority
    properties:
      listenerArn:
        type: string
        description: The ARN of the listener to attach the rule to.
      pathPattern:
        type: string
        description: The path pattern to match (e.g. /maintenance/*).
      priority:
        type: integer
        description: The unique rule priority within the listener (1-50000).
  steps:
  - stepId: createRule
    description: >-
      Create a path-pattern rule whose fixed-response action returns a static
      maintenance response for matching requests.
    operationId: createRule
    parameters:
    - name: ListenerArn
      in: query
      value: $inputs.listenerArn
    - name: Priority
      in: query
      value: $inputs.priority
    - name: Conditions.member.1.Field
      in: query
      value: path-pattern
    - name: Conditions.member.1.Values
      in: query
      value: $inputs.pathPattern
    - name: Actions.member.1.Type
      in: query
      value: fixed-response
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      ruleArn: $response.body#/rules/0/ruleArn
  - stepId: describeRules
    description: Read the listener's rules back to confirm the maintenance rule is present.
    operationId: describeRules
    parameters:
    - name: ListenerArn
      in: query
      value: $inputs.listenerArn
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      rules: $response.body#/rules
  outputs:
    ruleArn: $steps.createRule.outputs.ruleArn
    rules: $steps.describeRules.outputs.rules