Criar tarefas HTTP

Cria tarefas para enviar a um URL do Cloud Run, do Cloud Functions ou externo.

Mais informações

Para ver a documentação detalhada que inclui este exemplo de código, consulte:

• Criar tarefas de destino HTTP
• Introdução à API Cloud Tasks (Go)
• Primeiros passos com a API Cloud Tasks (Java)
• Primeiros passos com a API Cloud Tasks (Node.js)

Exemplo de código

C#

Para saber como instalar e usar a biblioteca de cliente do Cloud Tasks, consulte Bibliotecas de cliente do Cloud Tasks.

Para autenticar no Cloud Tasks, configure o Application Default Credentials. Para mais informações, consulte Configurar a autenticação para um ambiente de desenvolvimento local.

using Google.Cloud.Tasks.V2;
using Google.Protobuf;
using Google.Protobuf.WellKnownTypes;
using System;

class CreateHttpTask
{
    public string CreateTask(
        string projectId = "YOUR-PROJECT-ID",
        string location = "us-central1",
        string queue = "my-queue",
        string url = "http://example.com/taskhandler",
        string payload = "Hello World!",
        int inSeconds = 0)
    {
        CloudTasksClient client = CloudTasksClient.Create();
        QueueName parent = new QueueName(projectId, location, queue);

        var response = client.CreateTask(new CreateTaskRequest
        {
            Parent = parent.ToString(),
            Task = new Task
            {
                HttpRequest = new HttpRequest
                {
                    HttpMethod = HttpMethod.Post,
                    Url = url,
                    Body = ByteString.CopyFromUtf8(payload)
                },
                ScheduleTime = Timestamp.FromDateTime(
                    DateTime.UtcNow.AddSeconds(inSeconds))
            }
        });

        Console.WriteLine($"Created Task {response.Name}");
        return response.Name;
    }
}

Go

Para saber como instalar e usar a biblioteca de cliente para o Cloud Tasks, consulte Bibliotecas de cliente do Cloud Tasks.

Para autenticar no Cloud Tasks, configure o Application Default Credentials. Para mais informações, consulte Configurar a autenticação para um ambiente de desenvolvimento local.

// Command createHTTPtask constructs and adds a task to a Cloud Tasks Queue.
package main

import (
	"context"
	"fmt"

	cloudtasks "cloud.google.com/go/cloudtasks/apiv2"
	taskspb "cloud.google.com/go/cloudtasks/apiv2/cloudtaskspb"
)

// createHTTPTask creates a new task with a HTTP target then adds it to a Queue.
func createHTTPTask(projectID, locationID, queueID, url, message string) (*taskspb.Task, error) {

	// Create a new Cloud Tasks client instance.
	// See https://godoc.org/cloud.google.com/go/cloudtasks/apiv2
	ctx := context.Background()
	client, err := cloudtasks.NewClient(ctx)
	if err != nil {
		return nil, fmt.Errorf("NewClient: %w", err)
	}
	defer client.Close()

	// Build the Task queue path.
	queuePath := fmt.Sprintf("projects/%s/locations/%s/queues/%s", projectID, locationID, queueID)

	// Build the Task payload.
	// https://godoc.org/google.golang.org/genproto/googleapis/cloud/tasks/v2#CreateTaskRequest
	req := &taskspb.CreateTaskRequest{
		Parent: queuePath,
		Task: &taskspb.Task{
			// https://godoc.org/google.golang.org/genproto/googleapis/cloud/tasks/v2#HttpRequest
			MessageType: &taskspb.Task_HttpRequest{
				HttpRequest: &taskspb.HttpRequest{
					HttpMethod: taskspb.HttpMethod_POST,
					Url:        url,
				},
			},
		},
	}

	// Add a payload message if one is present.
	req.Task.GetHttpRequest().Body = []byte(message)

	createdTask, err := client.CreateTask(ctx, req)
	if err != nil {
		return nil, fmt.Errorf("cloudtasks.CreateTask: %w", err)
	}

	return createdTask, nil
}

Java

Para saber como instalar e usar a biblioteca de cliente para o Cloud Tasks, consulte Bibliotecas de cliente do Cloud Tasks.

Para autenticar no Cloud Tasks, configure o Application Default Credentials. Para mais informações, consulte Configurar a autenticação para um ambiente de desenvolvimento local.

import com.google.cloud.tasks.v2.CloudTasksClient;
import com.google.cloud.tasks.v2.HttpMethod;
import com.google.cloud.tasks.v2.HttpRequest;
import com.google.cloud.tasks.v2.QueueName;
import com.google.cloud.tasks.v2.Task;
import com.google.protobuf.ByteString;
import java.io.IOException;
import java.nio.charset.Charset;

public class CreateHttpTask {

  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";
    String queueId = "my-queue";
    createTask(projectId, locationId, queueId);
  }

  // Create a task with a HTTP target using the Cloud Tasks client.
  public static void createTask(String projectId, String locationId, String queueId)
      throws IOException {

    // Instantiates a client.
    try (CloudTasksClient client = CloudTasksClient.create()) {
      String url = "https://example.com/taskhandler";
      String payload = "Hello, World!";

      // Construct the fully qualified queue name.
      String queuePath = QueueName.of(projectId, locationId, queueId).toString();

      // Construct the task body.
      Task.Builder taskBuilder =
          Task.newBuilder()
              .setHttpRequest(
                  HttpRequest.newBuilder()
                      .setBody(ByteString.copyFrom(payload, Charset.defaultCharset()))
                      .setUrl(url)
                      .setHttpMethod(HttpMethod.POST)
                      .build());

      // Send create task request.
      Task task = client.createTask(queuePath, taskBuilder.build());
      System.out.println("Task created: " + task.getName());
    }
  }
}

Node.js

Para saber como instalar e usar a biblioteca de cliente do Cloud Tasks, consulte Bibliotecas de cliente do Cloud Tasks.

Para autenticar no Cloud Tasks, configure o Application Default Credentials. Para mais informações, consulte Configurar a autenticação para um ambiente de desenvolvimento local.

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

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

async function createHttpTask() {
  // TODO(developer): Uncomment these lines and replace with your values.
  // const project = 'my-project-id';
  // const queue = 'my-queue';
  // const location = 'us-central1';
  // const url = 'https://example.com/taskhandler';
  // const payload = 'Hello, World!';
  // const inSeconds = 180;

  // Construct the fully qualified queue name.
  const parent = client.queuePath(project, location, queue);

  const task = {
    httpRequest: {
      headers: {
        'Content-Type': 'text/plain', // Set content type to ensure compatibility your application's request parsing
      },
      httpMethod: 'POST',
      url,
    },
  };

  if (payload) {
    task.httpRequest.body = Buffer.from(payload).toString('base64');
  }

  if (inSeconds) {
    // The time when the task is scheduled to be attempted.
    task.scheduleTime = {
      seconds: parseInt(inSeconds) + Date.now() / 1000,
    };
  }

  // Send create task request.
  console.log('Sending task:');
  console.log(task);
  const request = {parent: parent, task: task};
  const [response] = await client.createTask(request);
  console.log(`Created task ${response.name}`);
}
createHttpTask();

PHP

Para saber como instalar e usar a biblioteca de cliente para o Cloud Tasks, consulte Bibliotecas de cliente do Cloud Tasks.

Para autenticar no Cloud Tasks, configure o Application Default Credentials. Para mais informações, consulte Configurar a autenticação para um ambiente de desenvolvimento local.

use Google\Cloud\Tasks\V2\Client\CloudTasksClient;
use Google\Cloud\Tasks\V2\CreateTaskRequest;
use Google\Cloud\Tasks\V2\HttpMethod;
use Google\Cloud\Tasks\V2\HttpRequest;
use Google\Cloud\Tasks\V2\Task;

/** Uncomment and populate these variables in your code */
// $projectId = 'The Google project ID';
// $locationId = 'The Location ID';
// $queueId = 'The Cloud Tasks Queue ID';
// $url = 'The full url path that the task request will be sent to.'
// $payload = 'The payload your task should carry to the task handler. Optional';

// Instantiate the client and queue name.
$client = new CloudTasksClient();
$queueName = $client->queueName($projectId, $locationId, $queueId);

// Create an Http Request Object.
$httpRequest = new HttpRequest();
// The full url path that the task request will be sent to.
$httpRequest->setUrl($url);
// POST is the default HTTP method, but any HTTP method can be used.
$httpRequest->setHttpMethod(HttpMethod::POST);
// Setting a body value is only compatible with HTTP POST and PUT requests.
if (!empty($payload)) {
    $httpRequest->setBody($payload);
}

// Create a Cloud Task object.
$task = new Task();
$task->setHttpRequest($httpRequest);

// Send request and print the task name.
$request = (new CreateTaskRequest())
    ->setParent($queueName)
    ->setTask($task);
$response = $client->createTask($request);
printf('Created task %s' . PHP_EOL, $response->getName());

Python

Para saber como instalar e usar a biblioteca de cliente para o Cloud Tasks, consulte Bibliotecas de cliente do Cloud Tasks.

Para autenticar no Cloud Tasks, configure o Application Default Credentials. Para mais informações, consulte Configurar a autenticação para um ambiente de desenvolvimento local.

import datetime
import json
from typing import Dict, Optional

from google.cloud import tasks_v2
from google.protobuf import duration_pb2, timestamp_pb2


def create_http_task(
    project: str,
    location: str,
    queue: str,
    url: str,
    json_payload: Dict,
    scheduled_seconds_from_now: Optional[int] = None,
    task_id: Optional[str] = None,
    deadline_in_seconds: Optional[int] = None,
) -> tasks_v2.Task:
    """Create an HTTP POST task with a JSON payload.
    Args:
        project: The project ID where the queue is located.
        location: The location where the queue is located.
        queue: The ID of the queue to add the task to.
        url: The target URL of the task.
        json_payload: The JSON payload to send.
        scheduled_seconds_from_now: Seconds from now to schedule the task for.
        task_id: ID to use for the newly created task.
        deadline_in_seconds: The deadline in seconds for task.
    Returns:
        The newly created task.
    """

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

    # Construct the task.
    task = tasks_v2.Task(
        http_request=tasks_v2.HttpRequest(
            http_method=tasks_v2.HttpMethod.POST,
            url=url,
            headers={"Content-type": "application/json"},
            body=json.dumps(json_payload).encode(),
        ),
        name=(
            client.task_path(project, location, queue, task_id)
            if task_id is not None
            else None
        ),
    )

    # Convert "seconds from now" to an absolute Protobuf Timestamp
    if scheduled_seconds_from_now is not None:
        timestamp = timestamp_pb2.Timestamp()
        timestamp.FromDatetime(
            datetime.datetime.utcnow()
            + datetime.timedelta(seconds=scheduled_seconds_from_now)
        )
        task.schedule_time = timestamp

    # Convert "deadline in seconds" to a Protobuf Duration
    if deadline_in_seconds is not None:
        duration = duration_pb2.Duration()
        duration.FromSeconds(deadline_in_seconds)
        task.dispatch_deadline = duration

    # Use the client to send a CreateTaskRequest.
    return client.create_task(
        tasks_v2.CreateTaskRequest(
            # The queue to add the task to
            parent=client.queue_path(project, location, queue),
            # The task itself
            task=task,
        )
    )

Ruby

Para saber como instalar e usar a biblioteca de cliente para o Cloud Tasks, consulte Bibliotecas de cliente do Cloud Tasks.

Para autenticar no Cloud Tasks, configure o Application Default Credentials. Para mais informações, consulte Configurar a autenticação para um ambiente de desenvolvimento local.

require "google/cloud/tasks"

# Create a Task with an HTTP Target
#
# @param [String] project_id Your Google Cloud Project ID.
# @param [String] location_id Your Google Cloud Project Location ID.
# @param [String] queue_id Your Google Cloud Tasks Queue ID.
# @param [String] url The full path to sent the task request to.
# @param [String] payload The request body of your task.
# @param [Integer] seconds The delay, in seconds, to process your task.
def create_http_task project_id, location_id, queue_id, url, payload: nil, seconds: nil
  # Instantiates a client.
  client = Google::Cloud::Tasks.cloud_tasks

  # Construct the fully qualified queue name.
  parent = client.queue_path project: project_id, location: location_id, queue: queue_id

  # Construct task.
  task = {
    http_request: {
      http_method: "POST",
      url:         url
    }
  }

  # Add payload to task body.
  task[:http_request][:body] = payload if payload

  # Add scheduled time to task.
  if seconds
    timestamp = Google::Protobuf::Timestamp.new
    timestamp.seconds = Time.now.to_i + seconds.to_i
    task[:schedule_time] = timestamp
  end

  # Send create task request.
  puts "Sending task #{task}"

  response = client.create_task parent: parent, task: task

  puts "Created task #{response.name}" if response.name
end

A seguir

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