Issue #3320559: Make a token available for child processes

modules/base/src/Plugin/Action/TokenSetContext.php

+<?php
+
+namespace Drupal\eca_base\Plugin\Action;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\eca\Plugin\Action\ActionBase;
+use Drupal\eca\Plugin\Action\ConfigurableActionBase;
+use Drupal\eca\Plugin\CleanupInterface;
+use Drupal\eca\Token\ContextDataProvider;
+
+/**
+ * Set currently defined token data to be available for any child process.
+ *
+ * @Action(
+ *   id = "eca_token_set_context",
+ *   label = @Translation("Token: set context"),
+ *   description = @Translation("Set currently defined token data to be available for any child process.")
+ * )
+ */
+class TokenSetContext extends ConfigurableActionBase implements CleanupInterface {
+
+  /**
+   * The context data provider.
+   *
+   * @var \Drupal\eca\Token\ContextDataProvider
+   */
+  protected ContextDataProvider $contextDataProvider;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition): ActionBase {
+    /** @var \Drupal\eca_base\Plugin\Action\TokenSetContext $instance */
+    $instance = parent::create($container, $configuration, $plugin_id, $plugin_definition);
+    $instance->setContextDataProvider($container->get('eca.token_data.context'));
+    return $instance;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function execute() {
+    $data = $this->tokenServices->getTokenData();
+    $this->contextDataProvider->push($data);
+  }
+
+  /**
+   * Set the context data provider.
+   *
+   * @var \Drupal\eca\Token\ContextDataProvider $provider
+   *   The provider.
+   */
+  public function setContextDataProvider(ContextDataProvider $provider): void {
+    $this->contextDataProvider = $provider;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function cleanupAfterSuccessors(): void {
+    $this->contextDataProvider->pop();
+  }
+
+}