gcloud alpha pubsub topics publish

NAME: gcloud alpha pubsub topics publish - publishes a message to the specified topic
SYNOPSIS: gcloud alpha pubsub topics publish TOPIC [MESSAGE_BODY] [--attribute=[ATTRIBUTE,…]] [--message=MESSAGE] [--ordering-key=ORDERING_KEY] [GCLOUD_WIDE_FLAG …]
DESCRIPTION: (ALPHA) Publishes a message to the specified topic name for testing and troubleshooting. Use with caution: all associated subscribers must be able to consume and acknowledge any message you publish, otherwise the system will continuously re-attempt delivery of the bad message for 7 days.
EXAMPLES: To publish messages in a batch to a specific Cloud Pub/Sub topic, run:
gcloud alpha pubsub topics publish mytopic --message="Hello World!" --attribute=KEY1=VAL1,KEY2=VAL2
POSITIONAL ARGUMENTS: Topic resource - Name of the topic to publish messages to. 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.

[MESSAGE_BODY]

(DEPRECATED) The body of the message to publish to the given topic name. Information on message formatting and size limits can be found at: https://cloud.google.com/pubsub/docs/publisher#publish
Positional argument MESSAGE_BODY is deprecated. Please use --message instead.
FLAGS: --attribute=[ATTRIBUTE,…]

Comma-separated list of attributes. Each ATTRIBUTE has the form name="value". You can specify up to 100 attributes.

--message=MESSAGE

The body of the message to publish to the given topic name. Information on message formatting and size limits can be found at: https://cloud.google.com/pubsub/docs/publisher#publish

--ordering-key=ORDERING_KEY

The key for ordering delivery to subscribers. All messages with the same ordering key are sent to subscribers in the order that Pub/Sub receives them.
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.
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 publish

gcloud beta pubsub topics publish