X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FModel%2FPushSubscriber.php;h=fb34bb55f43c2c02f78207462ee2f26dedd9d0bd;hb=24d7ffa3fee7e3686589f29f005fb2c419c9985a;hp=e982c1444232945f79096cab905d2721dc9c4c9b;hpb=f4a71b76dd62a19aa8ee1c413932f48750e3794c;p=friendica.git

diff --git a/src/Model/PushSubscriber.php b/src/Model/PushSubscriber.php
index e982c14442..fb34bb55f4 100644
--- a/src/Model/PushSubscriber.php
+++ b/src/Model/PushSubscriber.php
@@ -4,31 +4,149 @@
  */
 namespace Friendica\Model;
 
+use Friendica\Core\Logger;
 use Friendica\Core\Worker;
-use dba;
-
-require_once 'include/dba.php';
+use Friendica\Database\DBA;
+use Friendica\Util\DateTimeFormat;
 
 class PushSubscriber
 {
 	/**
+	 * @brief Send subscription notifications for the given user
+	 *
+	 * @param integer $uid      User ID
+	 * @param string  $priority Priority for push workers
+	 */
+	public static function publishFeed($uid, $default_priority = PRIORITY_HIGH)
+	{
+		$condition = ['push' => 0, 'uid' => $uid];
+		DBA::update('push_subscriber', ['push' => 1, 'next_try' => DBA::NULL_DATETIME], $condition);
+
+		self::requeue($default_priority);
+	}
+
+	/**
+	 * @brief start workers to transmit the feed data
+	 *
 	 * @param string $priority Priority for push workers
 	 */
-	public static function publishFeed($priority = PRIORITY_HIGH)
+	public static function requeue($default_priority = PRIORITY_HIGH)
 	{
 		// We'll push to each subscriber that has push > 0,
 		// i.e. there has been an update (set in notifier.php).
-		$subscribers = dba::select('push_subscriber', ['id', 'push', 'callback_url'], ["`push` > 0 AND `next_try` < UTC_TIMESTAMP()"]);
+		$subscribers = DBA::select('push_subscriber', ['id', 'push', 'callback_url', 'nickname'], ["`push` > 0 AND `next_try` < UTC_TIMESTAMP()"]);
 
-		while ($subscriber = dba::fetch($subscribers)) {
+		while ($subscriber = DBA::fetch($subscribers)) {
 			// We always handle retries with low priority
-			if ($subscriber["push"] > 1) {
+			if ($subscriber['push'] > 1) {
 				$priority = PRIORITY_LOW;
+			} else {
+				$priority = $default_priority;
+			}
+
+			Logger::log('Publish feed to ' . $subscriber['callback_url'] . ' for ' . $subscriber['nickname'] . ' with priority ' . $priority, Logger::DEBUG);
+			Worker::add($priority, 'PubSubPublish', (int)$subscriber['id']);
+		}
+
+		DBA::close($subscribers);
+	}
+
+	/**
+	 * @brief Renew the feed subscription
+	 *
+	 * @param integer $uid          User ID
+	 * @param string  $nick         Priority for push workers
+	 * @param integer $subscribe    Subscribe (Unsubscribe = false)
+	 * @param string  $hub_callback Callback address
+	 * @param string  $hub_topic    Feed topic
+	 * @param string  $hub_secret   Subscription secret
+	 */
+	public static function renew($uid, $nick, $subscribe, $hub_callback, $hub_topic, $hub_secret)
+	{
+		// fetch the old subscription if it exists
+		$subscriber = DBA::selectFirst('push_subscriber', ['last_update', 'push'], ['callback_url' => $hub_callback]);
+
+		// delete old subscription if it exists
+		DBA::delete('push_subscriber', ['callback_url' => $hub_callback]);
+
+		if ($subscribe) {
+			// if we are just updating an old subscription, keep the
+			// old values for last_update but reset the push
+			if (DBA::isResult($subscriber)) {
+				$last_update = $subscriber['last_update'];
+				$push_flag = min($subscriber['push'], 1);
+			} else {
+				$last_update = DateTimeFormat::utcNow();
+				$push_flag = 0;
 			}
-			logger("Publish feed to " . $subscriber["callback_url"] . " with priority " . $priority, LOGGER_DEBUG);
-			Worker::add($priority, 'PubSubPublish', (int)$subscriber["id"]);
+
+			// subscribe means adding the row to the table
+			$fields = ['uid' => $uid, 'callback_url' => $hub_callback,
+				'topic' => $hub_topic, 'nickname' => $nick, 'push' => $push_flag,
+				'last_update' => $last_update, 'renewed' => DateTimeFormat::utcNow(),
+				'secret' => $hub_secret];
+			DBA::insert('push_subscriber', $fields);
+
+			Logger::log("Successfully subscribed [$hub_callback] for $nick");
+		} else {
+			Logger::log("Successfully unsubscribed [$hub_callback] for $nick");
+			// we do nothing here, since the row was already deleted
+		}
+	}
+
+	/**
+	 * @brief Delay the push subscriber
+	 *
+	 * @param integer $id Subscriber ID
+	 */
+	public static function delay($id)
+	{
+		$subscriber = DBA::selectFirst('push_subscriber', ['push', 'callback_url', 'renewed', 'nickname'], ['id' => $id]);
+		if (!DBA::isResult($subscriber)) {
+			return;
+		}
+
+		$retrial = $subscriber['push'];
+
+		if ($retrial > 14) {
+			// End subscriptions if they weren't renewed for more than two months
+			$days = round((time() -  strtotime($subscriber['renewed'])) / (60 * 60 * 24));
+
+			if ($days > 60) {
+				DBA::update('push_subscriber', ['push' => -1, 'next_try' => DBA::NULL_DATETIME], ['id' => $id]);
+				Logger::log('Delivery error: Subscription ' . $subscriber['callback_url'] . ' for ' . $subscriber['nickname'] . ' is marked as ended.', Logger::DEBUG);
+			} else {
+				DBA::update('push_subscriber', ['push' => 0, 'next_try' => DBA::NULL_DATETIME], ['id' => $id]);
+				Logger::log('Delivery error: Giving up ' . $subscriber['callback_url'] . ' for ' . $subscriber['nickname'] . ' for now.', Logger::DEBUG);
+			}
+		} else {
+			// Calculate the delay until the next trial
+			$delay = (($retrial + 3) ** 4) + (rand(1, 30) * ($retrial + 1));
+			$next = DateTimeFormat::utc('now + ' . $delay . ' seconds');
+
+			$retrial = $retrial + 1;
+
+			DBA::update('push_subscriber', ['push' => $retrial, 'next_try' => $next], ['id' => $id]);
+			Logger::log('Delivery error: Next try (' . $retrial . ') ' . $subscriber['callback_url'] . ' for ' . $subscriber['nickname'] . ' at ' . $next, Logger::DEBUG);
+		}
+	}
+
+	/**
+	 * @brief Reset the push subscriber
+	 *
+	 * @param integer $id          Subscriber ID
+	 * @param date    $last_update Date of last transmitted item
+	 */
+	public static function reset($id, $last_update)
+	{
+		$subscriber = DBA::selectFirst('push_subscriber', ['callback_url', 'nickname'], ['id' => $id]);
+		if (!DBA::isResult($subscriber)) {
+			return;
 		}
 
-		dba::close($subscribers);
+		// set last_update to the 'created' date of the last item, and reset push=0
+		$fields = ['push' => 0, 'next_try' => DBA::NULL_DATETIME, 'last_update' => $last_update];
+		DBA::update('push_subscriber', $fields, ['id' => $id]);
+		Logger::log('Subscriber ' . $subscriber['callback_url'] . ' for ' . $subscriber['nickname'] . ' is marked as vital', Logger::DEBUG);
 	}
 }