release_tracks: [GA, BETA, ALPHA]
help_text:
  brief: Add IAM policy binding to a Compute Engine instance.
  description: |
    Add an IAM policy binding to the IAM policy of a Compute Engine instance. One binding consists of a member,
    a role, and an optional condition.

  examples: |
    To add an IAM policy binding for the role of 'roles/compute.securityAdmin' for the user 'test-user@gmail.com'
    with instance 'my-instance' and zone 'ZONE', run:

      $ {command} my-instance --zone=ZONE --member='user:test-user@gmail.com' --role='roles/compute.securityAdmin'

    To add an IAM policy binding which expires at the end of the year 2018 for the role of
    'roles/compute.securityAdmin' and the user 'test-user@gmail.com' with instance 'my-instance' and zone 'ZONE', run:

      $ {command} my-instance --zone=ZONE --member='user:test-user@gmail.com' --role='roles/compute.securityAdmin' --condition='expression=request.time < timestamp("2019-01-01T00:00:00Z"),title=expires_end_of_2018,description=Expires at midnight on 2018-12-31'

    See https://cloud.google.com/iam/docs/managing-policies for details of
    policy role and member types.

request:
  collection: compute.instances
  use_relative_name: false
  api_version: v1
  BETA:
    api_version: beta
  ALPHA:
    api_version: alpha

arguments:
  resource:
    help_text: The instance for which to add IAM policy binding to.
    spec: !REF googlecloudsdk.command_lib.compute.resources:instance

iam:
  set_iam_policy_request_path: zoneSetPolicyRequest
  message_type_overrides:
    policy: Policy
    set_iam_policy_request: ComputeInstancesSetIamPolicyRequest
  enable_condition: true
  policy_version: 3
  get_iam_policy_version_path: optionsRequestedPolicyVersion