Create a queue when migrating App Engine push queues

Creates a queue when migrating App Engine push queue code from task queues to Cloud Tasks.

Explore further

For detailed documentation that includes this code sample, see the following:

Code sample

Java

To learn how to install and use the client library for Cloud Tasks, see Cloud Tasks client libraries.

To authenticate to Cloud Tasks, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

import com.google.cloud.tasks.v2.AppEngineRouting;
import com.google.cloud.tasks.v2.CloudTasksClient;
import com.google.cloud.tasks.v2.LocationName;
import com.google.cloud.tasks.v2.Queue;
import com.google.cloud.tasks.v2.QueueName;
import com.google.cloud.tasks.v2.RateLimits;

public class CreateQueue {
  public static void createQueue(
      String projectId, String locationId, String queueBlueName, String queueRedName)
      throws Exception {
    try (CloudTasksClient client = CloudTasksClient.create()) {
      // TODO(developer): Uncomment these lines and replace with your values.
      // String projectId = "your-project-id";
      // String locationId = "us-central1";
      // String queueBlueName = "queue-blue";
      // String queueRedName = "queue-red";

      LocationName parent = LocationName.of(projectId, locationId);

      Queue queueBlue =
          Queue.newBuilder()
              .setName(QueueName.of(projectId, locationId, queueBlueName).toString())
              .setRateLimits(RateLimits.newBuilder().setMaxDispatchesPerSecond(5.0))
              .setAppEngineRoutingOverride(
                  AppEngineRouting.newBuilder().setVersion("v2").setService("task-module"))
              .build();

      Queue queueRed =
          Queue.newBuilder()
              .setName(QueueName.of(projectId, locationId, queueRedName).toString())
              .setRateLimits(RateLimits.newBuilder().setMaxDispatchesPerSecond(1.0))
              .build();

      Queue[] queues = new Queue[] {queueBlue, queueRed};
      for (Queue queue : queues) {
        Queue response = client.createQueue(parent, queue);
        System.out.println(response);
      }
    }
  }
}

Python

To learn how to install and use the client library for Cloud Tasks, see Cloud Tasks client libraries.

To authenticate to Cloud Tasks, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

client = tasks.CloudTasksClient()

# TODO(developer): Uncomment these lines and replace with your values.
# project = 'my-project-id'
# location = 'us- central1'
# queue_blue_name = 'queue-blue'
# queue_red_name = 'queue-red'

parent = f"projects/{project}/locations/{location}"

queue_blue = {
    "name": client.queue_path(project, location, queue_blue_name),
    "rate_limits": {"max_dispatches_per_second": 5},
    "app_engine_routing_override": {"version": "v2", "service": "task-module"},
}

queue_red = {
    "name": client.queue_path(project, location, queue_red_name),
    "rate_limits": {"max_dispatches_per_second": 1},
}

queues = [queue_blue, queue_red]
for queue in queues:
    response = client.create_queue(parent=parent, queue=queue)
    print(response)

What's next

To search and filter code samples for other Google Cloud products, see the Google Cloud sample browser.