--- /dev/null
+<?php
+
+namespace Drupal\aggregator_test\Plugin\aggregator\processor;
+
+use Drupal\aggregator\Plugin\AggregatorPluginSettingsBase;
+use Drupal\aggregator\Plugin\ProcessorInterface;
+use Drupal\aggregator\FeedInterface;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Core\Form\ConfigFormBaseTrait;
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * Defines a default processor implementation.
+ *
+ * Creates lightweight records from feed items.
+ *
+ * @AggregatorProcessor(
+ * id = "aggregator_test_processor",
+ * title = @Translation("Test processor"),
+ * description = @Translation("Test generic processor functionality.")
+ * )
+ */
+class TestProcessor extends AggregatorPluginSettingsBase implements ProcessorInterface, ContainerFactoryPluginInterface {
+ use ConfigFormBaseTrait;
+
+ /**
+ * Contains the configuration object factory.
+ *
+ * @var \Drupal\Core\Config\ConfigFactoryInterface
+ */
+ protected $configFactory;
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+ return new static(
+ $configuration,
+ $plugin_id,
+ $plugin_definition,
+ $container->get('config.factory')
+ );
+ }
+
+ /**
+ * Constructs a TestProcessor object.
+ *
+ * @param array $configuration
+ * A configuration array containing information about the plugin instance.
+ * @param string $plugin_id
+ * The plugin_id for the plugin instance.
+ * @param mixed $plugin_definition
+ * The plugin implementation definition.
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config
+ * The configuration factory object.
+ */
+ public function __construct(array $configuration, $plugin_id, $plugin_definition, ConfigFactoryInterface $config) {
+ $this->configFactory = $config;
+ parent::__construct($configuration + $this->getConfiguration(), $plugin_id, $plugin_definition);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getEditableConfigNames() {
+ return ['aggregator_test.settings'];
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+ $processors = $this->config('aggregator.settings')->get('processors');
+ $info = $this->getPluginDefinition();
+
+ $form['processors'][$info['id']] = [
+ '#type' => 'details',
+ '#title' => t('Test processor settings'),
+ '#description' => $info['description'],
+ '#open' => in_array($info['id'], $processors),
+ ];
+ // Add some dummy settings to verify settingsForm is called.
+ $form['processors'][$info['id']]['dummy_length'] = [
+ '#title' => t('Dummy length setting'),
+ '#type' => 'number',
+ '#min' => 1,
+ '#max' => 1000,
+ '#default_value' => $this->configuration['items']['dummy_length'],
+ ];
+ return $form;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+ $this->configuration['items']['dummy_length'] = $form_state->getValue('dummy_length');
+ $this->setConfiguration($this->configuration);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function process(FeedInterface $feed) {
+ foreach ($feed->items as &$item) {
+ // Prepend our test string.
+ $item['title'] = 'testProcessor' . $item['title'];
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function delete(FeedInterface $feed) {
+ // Append a random number, just to change the feed description.
+ $feed->description->value .= rand(0, 10);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function postProcess(FeedInterface $feed) {
+ // Double the refresh rate.
+ $feed->refresh->value *= 2;
+ $feed->save();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getConfiguration() {
+ return $this->configFactory->get('aggregator_test.settings')->get();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function setConfiguration(array $configuration) {
+ $config = $this->config('aggregator_test.settings');
+ foreach ($configuration as $key => $value) {
+ $config->set($key, $value);
+ }
+ $config->save();
+ }
+
+}