View schema registry details
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This document shows you how to view the details of a schema registry resource within Managed Service for Apache Kafka. You can view details such as its configuration, associated contexts, and subjects.

Different tools provide varying levels of detail:

The Google Cloud console displays comprehensive configuration information, including schema mode, compatibility type, and the list of associated subjects and contexts.
The Google Cloud CLI and the Managed Kafka API display the schema registry's fully qualified name and its associated contexts.

You can't use the open source Apache Kafka client APIs to view these specific Managed Service for Apache Kafka schema registry resource details.

Required roles and permissions

To get the permissions that you need to view a schema registry, ask your administrator to grant you the Managed Kafka Schema Registry Viewer (roles/managedkafka.schemaRegistryViewer) IAM role on the schema registry instance. For more information about granting roles, see Manage access to projects, folders, and organizations.

This predefined role contains the permissions required to view a schema registry. To see the exact permissions that are required, expand the Required permissions section:

Required permissions

The following permissions are required to view a schema registry:

Grant this permission on the schema registry resource: managedkafka.schemaRegistries.get

You might also be able to get these permissions with custom roles or other predefined roles.

Higher-level roles like Managed Kafka Schema Registry Editor (roles/managedkafka.schemaRegistryEditor) and Managed Kafka Schema Registry Admin (roles/managedkafka.schemaRegistryAdmin) also lets you view a schema registry.

For more information about the predefined roles available for Managed Service for Apache Kafka, see the Access control documentation.

View schema registry details

To retrieve the configuration and details of a specific schema registry, follow these steps:

Console

In the Google Cloud console, go to the Schema registries page.
Go to schema registries

A list of schema registries in your project is displayed.

Click the name of the schema registry whose details you want to view.
The Schema registry details page opens. The information displayed on this page is explained in the Schema registry page details section.

gcloud

After installing the Google Cloud CLI, initialize it by running the following command:
```
gcloud init
```
If you're using an external identity provider (IdP), you must first sign in to the gcloud CLI with your federated identity.

To retrieve the configuration and details of a specific schema registry, run the gcloud beta managed-kafka schema-registries describe command:

gcloud beta managed-kafka schema-registries describe SCHEMA_REGISTRY_ID \
    --location=LOCATION \

Replace the following:

SCHEMA_REGISTRY_ID (required): the ID of the schema registry you want to describe.
LOCATION (required): the Google Cloud region where the schema registry is located.

For example, the following command gets the details of a schema registry called gcloud_test located in the region us-central1:

gcloud beta managed-kafka schema-registries describe gcloud_test \
    --location=us-central1

The command returns the output similar to the following:

contexts:
-   projects/testing-311516/locations/us-central1/schemaRegistries/gcloud_test/contexts/.
name: projects/testing-311516/locations/us-central1/schemaRegistries/gcloud_test

REST

To retrieve the details of a specific schema registry instance using the REST API, make a GET request to the following URI:

GET https://managedkafka.googleapis.com/v1main/projects/PROJECT_ID/locations/LOCATION/schemaRegistries/SCHEMA_REGISTRY_ID
Authorization: Bearer $(gcloud auth application-default print-access-token)

Replace the following:

PROJECT_ID (required): your Google Cloud project ID.
LOCATION (required): the region where the schema registry exists.
SCHEMA_REGISTRY_ID (required): the unique ID of the schema registry that you want to view.

If the request is successful, the API returns a 200 OK status code. The response body contains a JSON object representing the details of the requested schema registry.

For example, the following is a response to a command to get the details of a schema registry called gcloud_test located in the region us-central1:

{
  "name": "projects/testing-311516/locations/us-central1/schemaRegistries/gcloud_test",
  "contexts": [
    "projects/testing-311516/locations/us-central1/schemaRegistries/gcloud_test/contexts/default",
    "projects/testing-311516/locations/us-central1/schemaRegistries/gcloud_test/contexts/."
  ]
}

For more information, see the REST API documentation.

Schema registry page details

When you view a schema registry in the Google Cloud console, the Schema registry details page displays the following information for the selected registry:

Region: the Google Cloud region where the registry resides.
Schema registry URL: the endpoint URL for the schema registry. This is of the format https://managedkafka.googleapis.com/v1/projects/PROJECT_ID/locations/LOCATION/schemaRegistries/SCHEMA_REGISTRY_ID.
For example—https://managedkafka.googleapis.com/v1/projects/managed-kafka-project/locations/us-central1/schemaRegistries/testschemaregistry
Schema mode: the operational mode that you can set at the schema registry level and the individual subject level. This setting controls whether modifications can be made.
Compatibility type: the registry-level configuration for the default compatibility setting enforced for new subjects or schema versions within this registry (unless overridden at the subject or context level). Common values include BACKWARD, FORWARD, FULL, or NONE.
Subjects in this schema registry: a list of subject names associated with the registry. If a context is available, you can also view the context for each subject.

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