列出队列

列出队列。

代码示例

Java

如需了解如何安装和使用 Cloud Tasks 客户端库，请参阅 Cloud Tasks 客户端库。

如需向 Cloud Tasks 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

import com.google.cloud.tasks.v2.CloudTasksClient;
import com.google.cloud.tasks.v2.LocationName;
import com.google.cloud.tasks.v2.Queue;
import java.io.IOException;

public class ListQueues {

  public static void main(String[] args) throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project-id";
    String locationId = "us-central1";
    listQueues(projectId, locationId);
  }

  // List queues using the Cloud Tasks client.
  public static void listQueues(String projectId, String locationId) throws IOException {

    // Instantiates a client.
    try (CloudTasksClient client = CloudTasksClient.create()) {

      // Construct the fully qualified location path.
      String parent = LocationName.of(projectId, locationId).toString();

      // Send list queues request.
      CloudTasksClient.ListQueuesPagedResponse response = client.listQueues(parent);

      // Iterate over results and print queue names
      int total = 0;
      for (Queue queue : response.iterateAll()) {
        System.out.println(queue.getName());
        total++;
      }

      if (total == 0) {
        System.out.println("No queues found!");
      }
    }
  }
}

Node.js

如需了解如何安装和使用 Cloud Tasks 客户端库，请参阅 Cloud Tasks 客户端库。

如需向 Cloud Tasks 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

// Imports the Google Cloud Tasks library.
const cloudTasks = require('@google-cloud/tasks');

// Instantiates a client.
const client = new cloudTasks.CloudTasksClient();

async function listQueues() {
  // Get the fully qualified path to the region
  const parent = client.locationPath(project, location);

  // list all fo the queues
  const [queues] = await client.listQueues({parent});

  if (queues.length > 0) {
    console.log('Queues:');
    queues.forEach(queue => {
      console.log(`  ${queue.name}`);
    });
  } else {
    console.log('No queues found!');
  }
}
listQueues();

Python

如需了解如何安装和使用 Cloud Tasks 客户端库，请参阅 Cloud Tasks 客户端库。

如需向 Cloud Tasks 进行身份验证，请设置应用默认凭据。如需了解详情，请参阅为本地开发环境设置身份验证。 

from typing import List

from google.cloud import tasks_v2

def list_queues(project: str, location: str) -> List[str]:
    """List all queues
    Args:
        project: The project ID to list queues from.
        location: The location ID to list queues from.

    Returns:
        A list of queue names.
    """

    # Create a client.
    client = tasks_v2.CloudTasksClient()

    # Use the client to send a ListQueuesRequest.
    response = client.list_queues(
        tasks_v2.ListQueuesRequest(
            parent=client.common_location_path(project, location)
        )
    )

    # Return the results.
    return [queue.name for queue in response]

后续步骤

如需搜索并过滤其他 Google Cloud 产品的代码示例，请参阅 Google Cloud 示例浏览器。