gcloud alpha pubsub topics set-iam-policy

NAME
gcloud alpha pubsub topics set-iam-policy - set the IAM policy for a Cloud Pub/Sub Topic
SYNOPSIS
gcloud alpha pubsub topics set-iam-policy TOPIC POLICY_FILE [GCLOUD_WIDE_FLAG …]
DESCRIPTION
(ALPHA) This command replaces the existing IAM policy for a topic, given a topic 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 topic has been subsequently updated.) A policy file that does not contain an etag value will replace any existing policy for the topic.
EXAMPLES
The following command will read an IAM policy defined in a JSON file 'policy.json' and set it for a topic with identifier 'my-topic' 
gcloud alpha pubsub topics set-iam-policy my-topic policy.json

See https://cloud.google.com/iam/docs/managing-policies for details of the
policy file format and contents.
POSITIONAL ARGUMENTS
Topic resource - The topic 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 topic 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.

TOPIC
ID of the topic or fully qualified identifier for the topic.

To set the topic attribute:

  • provide the argument topic 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.

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 topics set-iam-policy

gcloud beta pubsub topics set-iam-policy