> ## Documentation Index
> Fetch the complete documentation index at: https://cloudanix.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# PubSub Subscriptions Should Have Set Message Ordering To True

### More Info:

Ensure that PubSub Subscriptions have set message ordering to true

### Risk Level

Low

### Address

Operational Excellence

### Compliance Standards

CBP

### Triage and Remediation

<Tabs>
  <Tab title="Remediation">
    ### Remediation

    <AccordionGroup>
      <Accordion title="Using Console" defaultOpen="true">
        To remediate the misconfiguration "PubSub Subscriptions Should Have Set Message Ordering To True" for GCP using GCP console, follow the below steps:

        1. Login to the GCP console and navigate to the Pub/Sub section.
        2. Click on the subscription that needs to be remediated.
        3. In the subscription details page, click on the "Edit" button on the top.
        4. In the "Edit subscription" page, scroll down to the "Delivery" section.
        5. In the "Delivery" section, enable the "Enable message ordering" checkbox.
        6. Click on the "Save" button to save the changes.

        After following the above steps, the message ordering for the subscription will be enabled and the misconfiguration will be remediated.

        #
      </Accordion>

      <Accordion title="Using CLI">
        To remediate the misconfiguration of PubSub subscriptions not having message ordering set to true in GCP using GCP CLI, you can follow the below steps:

        1. Open the Cloud Shell in the GCP Console.

        2. Use the following command to list all the subscriptions in the project:

        ```
        gcloud pubsub subscriptions list
        ```

        3. Identify the subscription(s) that do not have message ordering set to true.

        4. Use the following command to update the subscription(s) to enable message ordering:

        ```
        gcloud pubsub subscriptions update [SUBSCRIPTION_NAME] --enable-message-ordering
        ```

        Replace \[SUBSCRIPTION\_NAME] with the name of the subscription that needs to be updated.

        5. Verify the changes by using the following command to describe the subscription:

        ```
        gcloud pubsub subscriptions describe [SUBSCRIPTION_NAME]
        ```

        This will display the details of the subscription, including the "enableMessageOrdering" field set to "true".

        By following these steps, you can remediate the misconfiguration of PubSub subscriptions not having message ordering set to true in GCP using GCP CLI.
      </Accordion>

      <Accordion title="Using Python">
        To remediate the misconfiguration "PubSub Subscriptions Should Have Set Message Ordering To True" in GCP using Python, you can follow the below steps:

        1. First, you need to authenticate and authorize your Python script to access your GCP project. You can use the `google-auth` and `google-cloud-pubsub` libraries to achieve this.

        ```python theme={null}
        from google.cloud import pubsub_v1
        from google.oauth2 import service_account

        # Replace the below values with your GCP project ID and service account credentials file path
        PROJECT_ID = 'your-project-id'
        SERVICE_ACCOUNT_FILE = '/path/to/your/credentials.json'

        # Authenticate and authorize the Python script
        credentials = service_account.Credentials.from_service_account_file(SERVICE_ACCOUNT_FILE)
        publisher = pubsub_v1.PublisherClient(credentials=credentials)
        subscriber = pubsub_v1.SubscriberClient(credentials=credentials)
        ```

        2. Next, you need to list all the subscriptions in your GCP project using the `list_subscriptions` method of the `SubscriberClient` class.

        ```python theme={null}
        # List all the subscriptions in your GCP project
        project_path = f"projects/{PROJECT_ID}"
        for subscription in subscriber.list_subscriptions(request={"project": project_path}):
            print(f"Subscription: {subscription.name}")
        ```

        3. For each subscription, you need to check if the message ordering is set to true or not using the `get_subscription` method of the `SubscriberClient` class.

        ```python theme={null}
        # Check if the message ordering is set to true for each subscription
        for subscription in subscriber.list_subscriptions(request={"project": project_path}):
            subscription_path = subscription.name
            subscription = subscriber.get_subscription(request={"subscription": subscription_path})
            if subscription.enable_message_ordering:
                print(f"Message ordering is enabled for subscription {subscription_path}")
            else:
                print(f"Message ordering is not enabled for subscription {subscription_path}")
        ```

        4. If the message ordering is not enabled for a subscription, you need to update the subscription to enable message ordering using the `update_subscription` method of the `SubscriberClient` class.

        ```python theme={null}
        # Enable message ordering for the subscription
        if not subscription.enable_message_ordering:
            update_mask = {"paths": ["enable_message_ordering"]}
            subscription.enable_message_ordering = True
            subscriber.update_subscription(request={"subscription": subscription, "update_mask": update_mask})
            print(f"Message ordering is enabled for subscription {subscription_path}")
        ```

        By following the above steps, you can remediate the misconfiguration "PubSub Subscriptions Should Have Set Message Ordering To True" in GCP using Python.
      </Accordion>
    </AccordionGroup>
  </Tab>
</Tabs>

### Additional Reading:

* [https://cloud.google.com/pubsub/docs/ordering](https://cloud.google.com/pubsub/docs/ordering)