NAME
    gcloud alpha pubsub subscriptions set-iam-policy - set the IAM policy for a
        Cloud Pub/Sub Subscription

SYNOPSIS
    gcloud alpha pubsub subscriptions set-iam-policy SUBSCRIPTION POLICY_FILE
        [GCLOUD_WIDE_FLAG ...]

DESCRIPTION
    (ALPHA) This command replaces the existing IAM policy for a subscription,
    given a subscription and a file encoded in JSON or YAML that contains the
    IAM policy.

    If the given policy file specifies an "etag" value, then the replacement
    will succeed only if the policy already in place matches that etag. (An
    etag obtained via get-iam-policy will prevent the replacement if the policy
    for the subscription has been subsequently updated.) A policy file that
    does not contain an etag value will replace any existing policy for the
    subscription.

EXAMPLES
    The following command will read an IAM policy defined in 'policy.json' and
    set it for a subscription 'my-sub'

        $ gcloud alpha pubsub subscriptions set-iam-policy my-sub policy.json

    See https://cloud.google.com/iam/docs/managing-policies for details of the
    policy file format and contents.

POSITIONAL ARGUMENTS
     Subscription resource - The subscription for which to set the IAM policy.
     This represents a Cloud resource. (NOTE) Some attributes are not given
     arguments in this group but can be set in other ways.

     To set the project attribute:
      ◆ provide the argument subscription on the command line with a fully
        specified name;
      ◆ provide the argument --project on the command line;
      ◆ set the property core/project.

     This must be specified.

       SUBSCRIPTION
          ID of the subscription or fully qualified identifier for the
          subscription.

          To set the subscription attribute:
          ▸ provide the argument subscription on the command line.

     POLICY_FILE
        Path to a local JSON or YAML formatted file containing a valid policy.

        The output of the get-iam-policy command is a valid file, as is any
        JSON or YAML file conforming to the structure of a Policy
        (https://cloud.google.com/iam/reference/rest/v1/Policy).

GCLOUD WIDE FLAGS
    These flags are available to all commands: --access-token-file, --account,
    --billing-project, --configuration, --flags-file, --flatten, --format,
    --help, --impersonate-service-account, --log-http, --project, --quiet,
    --trace-token, --user-output-enabled, --verbosity.

    Run $ gcloud help for details.

API REFERENCE
    This command uses the pubsub/v1 API. The full documentation for this API
    can be found at: https://cloud.google.com/pubsub/docs

NOTES
    This command is currently in alpha and might change without notice. If this
    command fails with API permission errors despite specifying the correct
    project, you might be trying to access an API with an invitation-only early
    access allowlist. These variants are also available:

        $ gcloud pubsub subscriptions set-iam-policy

        $ gcloud beta pubsub subscriptions set-iam-policy

