Delete schema

Delete a schema resource.

Documentation pages that include this code sample

To view the code sample used in context, see the following documentation:

Code sample

C#

Before trying this sample, follow the C# setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub C# API reference documentation.


using Google.Cloud.PubSub.V1;

public class DeleteSchemaSample
{
    public void DeleteSchema(string projectId, string schemaId)
    {
        SchemaServiceClient schemaService = SchemaServiceClient.Create();
        SchemaName schemaName = SchemaName.FromProjectSchema(projectId, schemaId);
        schemaService.DeleteSchema(schemaName);
    }
}

C++

Before trying this sample, follow the C++ setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub C++ API reference documentation.

namespace pubsub = ::google::cloud::pubsub;
[](pubsub::SchemaAdminClient client, std::string const& project_id,
   std::string const& schema_id) {
  auto status = client.DeleteSchema(pubsub::Schema(project_id, schema_id));
  // Note that kNotFound is a possible result when the library retries.
  if (status.code() == google::cloud::StatusCode::kNotFound) {
    std::cout << "The schema was not found\n";
    return;
  }
  if (!status.ok()) throw std::runtime_error(status.message());

  std::cout << "Schema successfully deleted\n";
}

Go

Before trying this sample, follow the Go setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Go API reference documentation.

import (
	"context"
	"fmt"
	"io"

	"cloud.google.com/go/pubsub"
)

func deleteSchema(w io.Writer, projectID, schemaID string) error {
	// projectID := "my-project-id"
	// schemaID := "my-schema"
	ctx := context.Background()
	client, err := pubsub.NewSchemaClient(ctx, projectID)
	if err != nil {
		return fmt.Errorf("pubsub.NewSchemaClient: %v", err)
	}
	defer client.Close()

	if err := client.DeleteSchema(ctx, schemaID); err != nil {
		return fmt.Errorf("client.DeleteSchema: %v", err)
	}
	fmt.Fprintf(w, "Deleted schema: %s", schemaID)
	return nil
}

Java

Before trying this sample, follow the Java setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Java API reference documentation.


import com.google.api.gax.rpc.NotFoundException;
import com.google.cloud.pubsub.v1.SchemaServiceClient;
import com.google.pubsub.v1.SchemaName;
import java.io.IOException;

public class DeleteSchemaExample {

  public static void main(String... args) throws Exception {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "your-project-id";
    String schemaId = "your-schema-id";

    deleteSchemaExample(projectId, schemaId);
  }

  public static void deleteSchemaExample(String projectId, String schemaId) throws IOException {
    SchemaName schemaName = SchemaName.of(projectId, schemaId);

    try (SchemaServiceClient schemaServiceClient = SchemaServiceClient.create()) {

      schemaServiceClient.deleteSchema(schemaName);

      System.out.println("Deleted a schema:" + schemaName);

    } catch (NotFoundException e) {
      System.out.println(schemaName + "not found.");
    }
  }
}

Node.js

Before trying this sample, follow the Node.js setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Node.js API reference documentation.

/**
 * TODO(developer): Uncomment this variable before running the sample.
 */
// const schemaName = 'YOUR_SCHEMA_NAME';

// Imports the Google Cloud client library
const {PubSub} = require('@google-cloud/pubsub');

// Creates a client; cache this for further use
const pubSubClient = new PubSub();

async function deleteSchema(schemaName) {
  const schema = pubSubClient.schema(schemaName);
  const name = await schema.getName();
  await schema.delete();
  console.log(`Schema ${name} deleted.`);
}

PHP

Before trying this sample, follow the PHP setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub PHP API reference documentation.

use Google\Cloud\PubSub\PubSubClient;

/**
 * Delete a schema.
 *
 * @param string $projectId
 * @param string $schemaId
 */
function delete_schema($projectId, $schemaId)
{
    $pubsub = new PubSubClient([
        'projectId' => $projectId,
    ]);

    $schema = $pubsub->schema($schemaId);

    if ($schema->exists()) {
        $schema->delete();

        printf('Schema %s deleted.', $schema->name());
    } else {
        printf('Schema %s does not exist.', $schema->name());
    }
}

Python

Before trying this sample, follow the Python setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Python API reference documentation.

from google.api_core.exceptions import NotFound
from google.cloud.pubsub import SchemaServiceClient

# TODO(developer): Replace these variables before running the sample.
# project_id = "your-project-id"
# schema_id = "your-schema-id"

schema_client = SchemaServiceClient()
schema_path = schema_client.schema_path(project_id, schema_id)

try:
    schema_client.delete_schema(request={"name": schema_path})
    print(f"Deleted a schema:\n{schema_path}")
except NotFound:
    print(f"{schema_id} not found.")

Ruby

Before trying this sample, follow the Ruby setup instructions in the Pub/Sub quickstart using client libraries. For more information, see the Pub/Sub Ruby API reference documentation.

# schema_id = "your-schema-id"
require "google/cloud/pubsub"

pubsub = Google::Cloud::Pubsub.new

schema = pubsub.schema schema_id
schema.delete

puts "Schema #{schema_id} deleted."

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