diff options
Diffstat (limited to 'classes/Subscription.php')
| -rw-r--r-- | classes/Subscription.php | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/classes/Subscription.php b/classes/Subscription.php index e9ad2a5a2..1d4f37929 100644 --- a/classes/Subscription.php +++ b/classes/Subscription.php @@ -26,6 +26,8 @@ require_once INSTALLDIR.'/classes/Memcached_DataObject.php'; class Subscription extends Memcached_DataObject { + const CACHE_WINDOW = 201; + ###START_AUTOCODE /* the code below is auto generated do not remove the above tag */ @@ -91,6 +93,9 @@ class Subscription extends Memcached_DataObject self::blow('user:notices_with_friends:%d', $subscriber->id); + self::blow('subscription:by-subscriber:'.$subscriber->id); + self::blow('subscription:by-subscribed:'.$other->id); + $subscriber->blowSubscriptionCount(); $other->blowSubscriberCount(); @@ -220,6 +225,9 @@ class Subscription extends Memcached_DataObject self::blow('user:notices_with_friends:%d', $subscriber->id); + self::blow('subscription:by-subscriber:'.$subscriber->id); + self::blow('subscription:by-subscribed:'.$other->id); + $subscriber->blowSubscriptionCount(); $other->blowSubscriberCount(); @@ -245,6 +253,8 @@ class Subscription extends Memcached_DataObject $act->verb = ActivityVerb::FOLLOW; + // XXX: rationalize this with the URL + $act->id = TagURI::mint('follow:%d:%d:%s', $subscriber->id, $subscribed->id, @@ -262,6 +272,156 @@ class Subscription extends Memcached_DataObject $act->actor = ActivityObject::fromProfile($subscriber); $act->objects[] = ActivityObject::fromProfile($subscribed); + $url = common_local_url('AtomPubShowSubscription', + array('subscriber' => $subscriber->id, + 'subscribed' => $subscribed->id)); + + $act->selfLink = $url; + $act->editLink = $url; + return $act; } + + /** + * Stream of subscriptions with the same subscriber + * + * Useful for showing pages that list subscriptions in reverse + * chronological order. Has offset & limit to make paging + * easy. + * + * @param integer $subscriberId Profile ID of the subscriber + * @param integer $offset Offset from latest + * @param integer $limit Maximum number to fetch + * + * @return Subscription stream of subscriptions; use fetch() to iterate + */ + + static function bySubscriber($subscriberId, + $offset = 0, + $limit = PROFILES_PER_PAGE) + { + if ($offset + $limit > self::CACHE_WINDOW) { + return new ArrayWrapper(self::realBySubscriber($subscriberId, + $offset, + $limit)); + } else { + $key = 'subscription:by-subscriber:'.$subscriberId; + $window = self::cacheGet($key); + if ($window === false) { + $window = self::realBySubscriber($subscriberId, + 0, + self::CACHE_WINDOW); + self::cacheSet($key, $window); + } + return new ArrayWrapper(array_slice($window, + $offset, + $limit)); + } + } + + private static function realBySubscriber($subscriberId, + $offset, + $limit) + { + $sub = new Subscription(); + + $sub->subscriber = $subscriberId; + + $sub->whereAdd('subscribed != ' . $subscriberId); + + $sub->orderBy('created DESC'); + $sub->limit($offset, $limit); + + $sub->find(); + + $subs = array(); + + while ($sub->fetch()) { + $subs[] = clone($sub); + } + + return $subs; + } + + /** + * Stream of subscriptions with the same subscribed profile + * + * Useful for showing pages that list subscribers in reverse + * chronological order. Has offset & limit to make paging + * easy. + * + * @param integer $subscribedId Profile ID of the subscribed + * @param integer $offset Offset from latest + * @param integer $limit Maximum number to fetch + * + * @return Subscription stream of subscriptions; use fetch() to iterate + */ + + static function bySubscribed($subscribedId, + $offset = 0, + $limit = PROFILES_PER_PAGE) + { + if ($offset + $limit > self::CACHE_WINDOW) { + return new ArrayWrapper(self::realBySubscribed($subscribedId, + $offset, + $limit)); + } else { + $key = 'subscription:by-subscribed:'.$subscribedId; + $window = self::cacheGet($key); + if ($window === false) { + $window = self::realBySubscribed($subscribedId, + 0, + self::CACHE_WINDOW); + self::cacheSet($key, $window); + } + return new ArrayWrapper(array_slice($window, + $offset, + $limit)); + } + } + + private static function realBySubscribed($subscribedId, + $offset, + $limit) + { + $sub = new Subscription(); + + $sub->subscribed = $subscribedId; + + $sub->whereAdd('subscriber != ' . $subscribedId); + + $sub->orderBy('created DESC'); + $sub->limit($offset, $limit); + + $sub->find(); + + $subs = array(); + + while ($sub->fetch()) { + $subs[] = clone($sub); + } + + return $subs; + } + + /** + * Flush cached subscriptions when subscription is updated + * + * Because we cache subscriptions, it's useful to flush them + * here. + * + * @param mixed $orig Original version of object + * + * @return boolean success flag. + */ + + function update($orig=null) + { + $result = parent::update($orig); + + self::blow('subscription:by-subscriber:'.$this->subscriber); + self::blow('subscription:by-subscribed:'.$this->subscribed); + + return $result; + } } |