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Répertorier les tâches

Un job Batch comprend une ou plusieurs tâches. Cet exemple récupère le nom et l'état actuel de toutes les tâches d'un job donné.

En savoir plus

Pour obtenir une documentation détaillée incluant cet exemple de code, consultez les articles suivants :

Afficher les missions et les tâches

Exemple de code

C++

Pour en savoir plus, consultez la documentation de référence de l'API C++ par lot.

Pour vous authentifier auprès de Batch, configurez le service Identifiants par défaut de l'application. Pour en savoir plus, consultez Configurer l'authentification pour un environnement de développement local.

#include "google/cloud/batch/v1/batch_client.h"

  [](std::string const& project_id, std::string const& location_id,
     std::string const& job_id, std::string const& group_id) {
    auto const parent = "projects/" + project_id + "/locations/" + location_id +
                        "/jobs/" + job_id + "/taskGroups/" + group_id;
    // Initialize a client and issue the request.
    auto client = google::cloud::batch_v1::BatchServiceClient(
        google::cloud::batch_v1::MakeBatchServiceConnection());
    int i = 0;
    for (auto task : client.ListTasks(parent)) {
      if (!task) throw std::move(task).status();
      std::cout << "Task[" << i++ << "]  " << task->DebugString() << "\n";
    }
  }

Go

Pour en savoir plus, consultez la documentation de référence de l'API Go par lot.

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

Pour en savoir plus, consultez la documentation de référence de l'API Java par lot.

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

Pour en savoir plus, consultez la documentation de référence de l'API Node.js par lot.

/**
 * 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);
  }
}

await callListTasks();

Python

Pour en savoir plus, consultez la documentation de référence de l'API Python par lot.

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}"
    )

Étape suivante

Pour rechercher et filtrer des exemples de code pour d'autres Google Cloud produits, consultez l'explorateur d'exemplesGoogle Cloud .