--- /dev/null
+<?php
+
+namespace Drupal\Core\TempStore;
+
+use Drupal\Core\KeyValueStore\KeyValueExpirableFactoryInterface;
+use Drupal\Core\Lock\LockBackendInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
+
+/**
+ * Creates a shared temporary storage for a collection.
+ */
+class SharedTempStoreFactory {
+
+ /**
+ * The storage factory creating the backend to store the data.
+ *
+ * @var \Drupal\Core\KeyValueStore\KeyValueExpirableFactoryInterface
+ */
+ protected $storageFactory;
+
+ /**
+ * The lock object used for this data.
+ *
+ * @var \Drupal\Core\Lock\LockBackendInterface
+ */
+ protected $lockBackend;
+
+ /**
+ * The request stack.
+ *
+ * @var \Symfony\Component\HttpFoundation\RequestStack
+ */
+ protected $requestStack;
+
+ /**
+ * The time to live for items in seconds.
+ *
+ * @var int
+ */
+ protected $expire;
+
+ /**
+ * Constructs a Drupal\Core\TempStore\SharedTempStoreFactory object.
+ *
+ * @param \Drupal\Core\KeyValueStore\KeyValueExpirableFactoryInterface $storage_factory
+ * The key/value store factory.
+ * @param \Drupal\Core\Lock\LockBackendInterface $lock_backend
+ * The lock object used for this data.
+ * @param \Symfony\Component\HttpFoundation\RequestStack $request_stack
+ * The request stack.
+ * @param int $expire
+ * The time to live for items, in seconds.
+ */
+ public function __construct(KeyValueExpirableFactoryInterface $storage_factory, LockBackendInterface $lock_backend, RequestStack $request_stack, $expire = 604800) {
+ $this->storageFactory = $storage_factory;
+ $this->lockBackend = $lock_backend;
+ $this->requestStack = $request_stack;
+ $this->expire = $expire;
+ }
+
+ /**
+ * Creates a SharedTempStore for the current user or anonymous session.
+ *
+ * @param string $collection
+ * The collection name to use for this key/value store. This is typically
+ * a shared namespace or module name, e.g. 'views', 'entity', etc.
+ * @param mixed $owner
+ * (optional) The owner of this SharedTempStore. By default, the
+ * SharedTempStore is owned by the currently authenticated user, or by the
+ * active anonymous session if no user is logged in.
+ *
+ * @return \Drupal\Core\TempStore\SharedTempStore
+ * An instance of the key/value store.
+ */
+ public function get($collection, $owner = NULL) {
+ // Use the currently authenticated user ID or the active user ID unless
+ // the owner is overridden.
+ if (!isset($owner)) {
+ $owner = \Drupal::currentUser()->id() ?: session_id();
+ }
+
+ // Store the data for this collection in the database.
+ $storage = $this->storageFactory->get("tempstore.shared.$collection");
+ return new SharedTempStore($storage, $this->lockBackend, $owner, $this->requestStack, $this->expire);
+ }
+
+}