cloud-8.x-2.0-beta1/modules/cloud_service_providers/aws_cloud/src/Form/Ec2/InstanceStartForm.php

<?php

namespace Drupal\aws_cloud\Form\Ec2;

use Drupal\aws_cloud\Entity\Ec2\Instance;
use Drupal\Core\Form\FormStateInterface;

/**
 * Starts a stopped AWS Instance.
 *
 * @package Drupal\aws_cloud\Form\Ec2
 */
class InstanceStartForm extends AwsDeleteForm {

  /**
   * {@inheritdoc}
   */
  public function getQuestion() {
    $entity = $this->entity;

    return t('Are you sure you want to start instance: %name?', [
      '%name' => $entity->label(),
    ]);
  }

  /**
   * {@inheritdoc}
   */
  public function getConfirmText() {
    return t('Start');
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {

    $params = [
      'InstanceIds' => [
        $this->entity->getInstanceId(),
      ],
    ];

    $this->ec2Service->setCloudContext($this->entity->getCloudContext());
    $result = $this->ec2Service->startInstances($params);
    if ($result != NULL) {
      $current_state = $result['StartingInstances'][0]['CurrentState']['Name'];
      $instance = Instance::load($this->entity->id());
      $instance->setInstanceState($current_state);
      $instance->save();

      $message = $this->t('@name starting.', [
        '@name'  => $this->entity->label(),
      ]);
      $this->messenger->addMessage($message);
    }

    $form_state->setRedirect('view.aws_cloud_instance.list', ['cloud_context' => $this->entity->getCloudContext()]);

  }

}