Issue #3493008 by freelock: Action plugin for Page Cache Kill Switch

Closes #3493008

modules/cache/src/Plugin/Action/PageCacheKillSwitch.php

+<?php
+
+namespace Drupal\eca_cache\Plugin\Action;
+
+use Drupal\Core\PageCache\ResponsePolicy\KillSwitch;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\eca\Plugin\Action\ConfigurableActionBase;
+
+/**
+ * Provides a Page Cache Kill Switch action.
+ *
+ * @Action(
+ *   id = "eca_page_cache_kill_switch",
+ *   label = @Translation("Page Cache Kill Switch"),
+ *   description = @Translation("Kill the page cache for this page")
+ * )
+ */
+class PageCacheKillSwitch extends ConfigurableActionBase {
+
+  /**
+   * The kill switch response policy.
+   *
+   * @var \Drupal\Core\PageCache\ResponsePolicy\KillSwitch
+   */
+  protected KillSwitch $killSwitch;
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition): static {
+    $self = parent::create(
+      $container,
+      $configuration,
+      $plugin_id,
+      $plugin_definition
+    );
+    $self->killSwitch = $container->get('page_cache_kill_switch');
+    return $self;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function execute(): void {
+    $this->killSwitch->trigger();
+  }
+
+}