列出任务

一个批量作业由一个或多个任务组成。此示例检索指定作业中所有任务的名称和当前状态。

深入探索

如需查看包含此代码示例的详细文档，请参阅以下内容：

• 查看作业和任务

代码示例

Go

如需了解详情，请参阅 Batch Go API 参考文档。

如需向 Batch 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。

在 GitHub 上查看 反馈

import (
	"context"
	"fmt"
	"io"

	batch "cloud.google.com/go/batch/apiv1"
	"cloud.google.com/go/batch/apiv1/batchpb"
	"google.golang.org/api/iterator"
)

// Lists all tasks in the given project and region
func listTasks(w io.Writer, projectID, region, jobName, taskGroup string) error {
	// projectID := "your_project_id"
	// region := "us-central1"
	// jobName := "some-job"
	// taskGroup := "group0" // defaults to "group0" on job creation unless overridden

	ctx := context.Background()
	batchClient, err := batch.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("NewClient: %w", err)
	}
	defer batchClient.Close()

	req := &batchpb.ListTasksRequest{
		Parent: fmt.Sprintf("projects/%s/locations/%s/jobs/%s/taskGroups/%s", projectID, region, jobName, taskGroup),
	}

	var tasks []*batchpb.Task
	it := batchClient.ListTasks(ctx, req)

	for {
		task, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			return fmt.Errorf("unable to list tasks: %w", err)
		}
		tasks = append(tasks, task)
	}

	fmt.Fprintf(w, "Tasks: %v\n", tasks)

	return nil
}

Java

如需了解详情，请参阅 Batch Java API 参考文档。

如需向 Batch 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。

在 GitHub 上查看 反馈

import com.google.cloud.batch.v1.BatchServiceClient;
import com.google.cloud.batch.v1.Task;
import java.io.IOException;

public class ListTasks {

  public static void main(String[] args) throws IOException {
    // TODO(developer): Replace these variables before running the sample.
    // Project ID or project number of the Cloud project you want to use.
    String projectId = "YOUR_PROJECT_ID";
    // Name of the region hosts the job.
    String region = "europe-central2";
    // Name of the job which tasks you want to list.
    String jobName = "JOB_NAME";
    // Name of the group of tasks. Usually it's `group0`.
    String groupName = "group0";

    listTasks(projectId, region, jobName, groupName);
  }

  // Get a list of all jobs defined in given region.
  public static void listTasks(String projectId, String region, String jobName, String groupName)
      throws IOException {
    // Initialize client that will be used to send requests. This client only needs to be created
    // once, and can be reused for multiple requests. After completing all of your requests, call
    // the `batchServiceClient.close()` method on the client to safely
    // clean up any remaining background resources.
    try (BatchServiceClient batchServiceClient = BatchServiceClient.create()) {

      String parent = String.format("projects/%s/locations/%s/jobs/%s/taskGroups/%s", projectId,
          region, jobName, groupName);
      for (Task task : batchServiceClient.listTasks(parent).iterateAll()) {
        System.out.println(task.getName());
      }
    }
  }
}

Node.js

如需了解详情，请参阅 Batch Node.js API 参考文档。

如需向 Batch 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。

在 GitHub 上查看 反馈

/**
 * TODO(developer): Uncomment and replace these variables before running the sample.
 */
// const projectId = 'YOUR_PROJECT_ID';
/**
 * The region that hosts the job.
 */
// const region = 'us-central-1';
/**
 * The name of the job which tasks you want to list.
 */
// const jobName = 'YOUR_JOB_NAME';
/**
 * The name of the group of tasks. Usually it's `group0`.
 */
// const groupName = 'group0';

// Imports the Batch library
const batchLib = require('@google-cloud/batch');

// Instantiates a client
const batchClient = new batchLib.v1.BatchServiceClient();

async function callListTasks() {
  // Construct request
  const request = {
    parent: `projects/${projectId}/locations/${region}/jobs/${jobName}/taskGroups/${groupName}`,
  };

  // Run request
  const iterable = await batchClient.listTasksAsync(request);
  for await (const response of iterable) {
    console.log(response);
  }
}

callListTasks();

Python

如需了解详情，请参阅 Batch Python API 参考文档。

如需向 Batch 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。

在 GitHub 上查看 反馈

from __future__ import annotations

from collections.abc import Iterable

from google.cloud import batch_v1

def list_tasks(project_id: str, region: str, job_name: str, group_name: str) -> Iterable[batch_v1.Task]:
    """
    Get a list of all jobs defined in given region.

    Args:
        project_id: project ID or project number of the Cloud project you want to use.
        region: name of the region hosting the jobs.
        job_name: name of the job which tasks you want to list.
        group_name: name of the group of tasks. Usually it's `group0`.

    Returns:
        An iterable collection of Task objects.
    """
    client = batch_v1.BatchServiceClient()

    return client.list_tasks(parent=f"projects/{project_id}/locations/{region}/jobs/{job_name}/taskGroups/{group_name}")

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。