--- /dev/null
+<?php
+
+namespace Drupal\aggregator\Entity;
+
+use Drupal\Core\Entity\ContentEntityBase;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Field\BaseFieldDefinition;
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\aggregator\FeedInterface;
+
+/**
+ * Defines the aggregator feed entity class.
+ *
+ * @ContentEntityType(
+ * id = "aggregator_feed",
+ * label = @Translation("Aggregator feed"),
+ * handlers = {
+ * "storage" = "Drupal\aggregator\FeedStorage",
+ * "storage_schema" = "Drupal\aggregator\FeedStorageSchema",
+ * "view_builder" = "Drupal\aggregator\FeedViewBuilder",
+ * "access" = "Drupal\aggregator\FeedAccessControlHandler",
+ * "views_data" = "Drupal\aggregator\AggregatorFeedViewsData",
+ * "form" = {
+ * "default" = "Drupal\aggregator\FeedForm",
+ * "delete" = "Drupal\aggregator\Form\FeedDeleteForm",
+ * "delete_items" = "Drupal\aggregator\Form\FeedItemsDeleteForm",
+ * },
+ * "route_provider" = {
+ * "html" = "Drupal\aggregator\FeedHtmlRouteProvider",
+ * },
+ * },
+ * links = {
+ * "canonical" = "/aggregator/sources/{aggregator_feed}",
+ * "edit-form" = "/aggregator/sources/{aggregator_feed}/configure",
+ * "delete-form" = "/aggregator/sources/{aggregator_feed}/delete",
+ * },
+ * field_ui_base_route = "aggregator.admin_overview",
+ * base_table = "aggregator_feed",
+ * render_cache = FALSE,
+ * entity_keys = {
+ * "id" = "fid",
+ * "label" = "title",
+ * "langcode" = "langcode",
+ * "uuid" = "uuid",
+ * }
+ * )
+ */
+class Feed extends ContentEntityBase implements FeedInterface {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function label() {
+ return $this->get('title')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function deleteItems() {
+ \Drupal::service('aggregator.items.importer')->delete($this);
+
+ // Reset feed.
+ $this->setLastCheckedTime(0);
+ $this->setHash('');
+ $this->setEtag('');
+ $this->setLastModified(0);
+ $this->save();
+
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function refreshItems() {
+ $success = \Drupal::service('aggregator.items.importer')->refresh($this);
+
+ // Regardless of successful or not, indicate that it has been checked.
+ $this->setLastCheckedTime(REQUEST_TIME);
+ $this->setQueuedTime(0);
+ $this->save();
+
+ return $success;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function preCreate(EntityStorageInterface $storage, array &$values) {
+ $values += [
+ 'link' => '',
+ 'description' => '',
+ 'image' => '',
+ ];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function preDelete(EntityStorageInterface $storage, array $entities) {
+ foreach ($entities as $entity) {
+ // Notify processors to delete stored items.
+ \Drupal::service('aggregator.items.importer')->delete($entity);
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function postDelete(EntityStorageInterface $storage, array $entities) {
+ parent::postDelete($storage, $entities);
+ if (\Drupal::moduleHandler()->moduleExists('block')) {
+ // Make sure there are no active blocks for these feeds.
+ $ids = \Drupal::entityQuery('block')
+ ->condition('plugin', 'aggregator_feed_block')
+ ->condition('settings.feed', array_keys($entities))
+ ->execute();
+ if ($ids) {
+ $block_storage = \Drupal::entityManager()->getStorage('block');
+ $block_storage->delete($block_storage->loadMultiple($ids));
+ }
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
+ /** @var \Drupal\Core\Field\BaseFieldDefinition[] $fields */
+ $fields = parent::baseFieldDefinitions($entity_type);
+
+ $fields['fid']->setLabel(t('Feed ID'))
+ ->setDescription(t('The ID of the aggregator feed.'));
+
+ $fields['uuid']->setDescription(t('The aggregator feed UUID.'));
+
+ $fields['langcode']->setLabel(t('Language code'))
+ ->setDescription(t('The feed language code.'));
+
+ $fields['title'] = BaseFieldDefinition::create('string')
+ ->setLabel(t('Title'))
+ ->setDescription(t('The name of the feed (or the name of the website providing the feed).'))
+ ->setRequired(TRUE)
+ ->setSetting('max_length', 255)
+ ->setDisplayOptions('form', [
+ 'type' => 'string_textfield',
+ 'weight' => -5,
+ ])
+ ->setDisplayConfigurable('form', TRUE)
+ ->addConstraint('FeedTitle');
+
+ $fields['url'] = BaseFieldDefinition::create('uri')
+ ->setLabel(t('URL'))
+ ->setDescription(t('The fully-qualified URL of the feed.'))
+ ->setRequired(TRUE)
+ ->setDisplayOptions('form', [
+ 'type' => 'uri',
+ 'weight' => -3,
+ ])
+ ->setDisplayConfigurable('form', TRUE)
+ ->addConstraint('FeedUrl');
+
+ $intervals = [900, 1800, 3600, 7200, 10800, 21600, 32400, 43200, 64800, 86400, 172800, 259200, 604800, 1209600, 2419200];
+ $period = array_map([\Drupal::service('date.formatter'), 'formatInterval'], array_combine($intervals, $intervals));
+ $period[AGGREGATOR_CLEAR_NEVER] = t('Never');
+
+ $fields['refresh'] = BaseFieldDefinition::create('list_integer')
+ ->setLabel(t('Update interval'))
+ ->setDescription(t('The length of time between feed updates. Requires a correctly configured cron maintenance task.'))
+ ->setSetting('unsigned', TRUE)
+ ->setRequired(TRUE)
+ ->setSetting('allowed_values', $period)
+ ->setDisplayOptions('form', [
+ 'type' => 'options_select',
+ 'weight' => -2,
+ ])
+ ->setDisplayConfigurable('form', TRUE);
+
+ $fields['checked'] = BaseFieldDefinition::create('timestamp')
+ ->setLabel(t('Checked'))
+ ->setDescription(t('Last time feed was checked for new items, as Unix timestamp.'))
+ ->setDefaultValue(0)
+ ->setDisplayOptions('view', [
+ 'label' => 'inline',
+ 'type' => 'timestamp_ago',
+ 'weight' => 1,
+ ])
+ ->setDisplayConfigurable('view', TRUE);
+
+ $fields['queued'] = BaseFieldDefinition::create('timestamp')
+ ->setLabel(t('Queued'))
+ ->setDescription(t('Time when this feed was queued for refresh, 0 if not queued.'))
+ ->setDefaultValue(0);
+
+ $fields['link'] = BaseFieldDefinition::create('uri')
+ ->setLabel(t('URL'))
+ ->setDescription(t('The link of the feed.'))
+ ->setDisplayOptions('view', [
+ 'label' => 'inline',
+ 'weight' => 4,
+ ])
+ ->setDisplayConfigurable('view', TRUE);
+
+ $fields['description'] = BaseFieldDefinition::create('string_long')
+ ->setLabel(t('Description'))
+ ->setDescription(t("The parent website's description that comes from the @description element in the feed.", ['@description' => '<description>']));
+
+ $fields['image'] = BaseFieldDefinition::create('uri')
+ ->setLabel(t('Image'))
+ ->setDescription(t('An image representing the feed.'));
+
+ $fields['hash'] = BaseFieldDefinition::create('string')
+ ->setLabel(t('Hash'))
+ ->setSetting('is_ascii', TRUE)
+ ->setDescription(t('Calculated hash of the feed data, used for validating cache.'));
+
+ $fields['etag'] = BaseFieldDefinition::create('string')
+ ->setLabel(t('Etag'))
+ ->setDescription(t('Entity tag HTTP response header, used for validating cache.'));
+
+ // This is updated by the fetcher and not when the feed is saved, therefore
+ // it's a timestamp and not a changed field.
+ $fields['modified'] = BaseFieldDefinition::create('timestamp')
+ ->setLabel(t('Modified'))
+ ->setDescription(t('When the feed was last modified, as a Unix timestamp.'));
+
+ return $fields;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getUrl() {
+ return $this->get('url')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getRefreshRate() {
+ return $this->get('refresh')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getLastCheckedTime() {
+ return $this->get('checked')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getQueuedTime() {
+ return $this->get('queued')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getWebsiteUrl() {
+ return $this->get('link')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getDescription() {
+ return $this->get('description')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getImage() {
+ return $this->get('image')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getHash() {
+ return $this->get('hash')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getEtag() {
+ return $this->get('etag')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getLastModified() {
+ return $this->get('modified')->value;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setTitle($title) {
+ $this->set('title', $title);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setUrl($url) {
+ $this->set('url', $url);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setRefreshRate($refresh) {
+ $this->set('refresh', $refresh);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setLastCheckedTime($checked) {
+ $this->set('checked', $checked);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setQueuedTime($queued) {
+ $this->set('queued', $queued);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setWebsiteUrl($link) {
+ $this->set('link', $link);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setDescription($description) {
+ $this->set('description', $description);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setImage($image) {
+ $this->set('image', $image);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setHash($hash) {
+ $this->set('hash', $hash);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setEtag($etag) {
+ $this->set('etag', $etag);
+ return $this;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setLastModified($modified) {
+ $this->set('modified', $modified);
+ return $this;
+ }
+
+}