Google Cloud Platform Copy Project IAM Policy

arazzo: 1.0.1
info:
  title: Google Cloud Platform Copy Project IAM Policy
  summary: Read the IAM policy of a source project and apply its bindings to a target project.
  description: >-
    Replicates an IAM policy from one project to another. The workflow reads the
    source project's policy, reads the target project's policy to capture its
    etag for safe replacement, sets the source bindings on the target with that
    etag, and re-reads the target to confirm. 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: cloudResourceManagerApi
  url: ../openapi/cloud-resource-manager-openapi.yml
  type: openapi
workflows:
- workflowId: copy-project-iam-policy
  summary: Copy IAM bindings from a source project onto a target project.
  description: >-
    Reads the source policy bindings, captures the target etag, writes the
    source bindings onto the target, then confirms.
  inputs:
    type: object
    required:
    - sourceResource
    - targetResource
    properties:
      sourceResource:
        type: string
        description: The source project resource, e.g. projects/11111.
      targetResource:
        type: string
        description: The target project resource, e.g. projects/22222.
  steps:
  - stepId: getSourcePolicy
    description: >-
      Read the source project IAM policy to capture the bindings to copy.
    operationId: cloudresourcemanager.projects.getIamPolicy
    parameters:
    - name: resource
      in: path
      value: $inputs.sourceResource
    requestBody:
      contentType: application/json
      payload:
        options:
          requestedPolicyVersion: 3
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      bindings: $response.body#/bindings
  - stepId: getTargetPolicy
    description: >-
      Read the target project IAM policy to capture its etag for safe
      replacement.
    operationId: cloudresourcemanager.projects.getIamPolicy
    parameters:
    - name: resource
      in: path
      value: $inputs.targetResource
    requestBody:
      contentType: application/json
      payload:
        options:
          requestedPolicyVersion: 3
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      etag: $response.body#/etag
  - stepId: applyPolicy
    description: >-
      Write the source bindings onto the target project, passing the target's
      etag for optimistic concurrency.
    operationId: cloudresourcemanager.projects.setIamPolicy
    parameters:
    - name: resource
      in: path
      value: $inputs.targetResource
    requestBody:
      contentType: application/json
      payload:
        policy:
          version: 3
          etag: $steps.getTargetPolicy.outputs.etag
          bindings: $steps.getSourcePolicy.outputs.bindings
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      newEtag: $response.body#/etag
  - stepId: confirmTarget
    description: >-
      Re-read the target project policy to confirm the copied bindings.
    operationId: cloudresourcemanager.projects.getIamPolicy
    parameters:
    - name: resource
      in: path
      value: $inputs.targetResource
    requestBody:
      contentType: application/json
      payload:
        options:
          requestedPolicyVersion: 3
    successCriteria:
    - condition: $statusCode == 200
    outputs:
      bindings: $response.body#/bindings
  outputs:
    sourceBindings: $steps.getSourcePolicy.outputs.bindings
    targetBindings: $steps.confirmTarget.outputs.bindings