eca-1.0.x-dev/modules/cache/src/Plugin/Action/CacheRead.php

<?php

namespace Drupal\eca_cache\Plugin\Action;

use Drupal\Core\Form\FormStateInterface;

/**
 * Abstract action to read from cache.
 */
abstract class CacheRead extends CacheActionBase {

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration(): array {
    return [
      'token_name' => '',
    ]
    + parent::defaultConfiguration();
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state): array {
    $form['token_name'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Name of token'),
      '#default_value' => $this->configuration['token_name'],
      '#description' => $this->t('The cache item value will be loaded into this specified token.'),
      '#required' => TRUE,
      '#weight' => -30,
      '#eca_token_reference' => TRUE,
    ];
    return parent::buildConfigurationForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state): void {
    $this->configuration['token_name'] = $form_state->getValue('token_name');
    parent::submitConfigurationForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function execute(): void {
    if (!($cache = $this->getCacheBackend()) || !($key = $this->getCacheKey()) || !($name = trim($this->configuration['token_name']))) {
      return;
    }

    /** @var object|false $cached */
    $cached = $cache->get($key);
    if ($cached && property_exists($cached, 'data')) {
      $this->tokenService->addTokenData($name, $cached->data);
    }
  }

}