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[COMPONENT][Notification] Make logic more generic and robust

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Fixed various bugs

Some important concepts to bear in mind:

* Notification: Associated with activities, won't be reconstructed
together with objects, can be thought of as transient

* Attention: Associated with objects, will be reconstructed with them, can
be thought as persistent

* Notifications and Attentions have no direct implications.

* Mentions are a specific form of attentions in notes, leads to the creation of Attentions.

Finally,

Potential PHP issue detected and reported: https://github.com/php/php-src/issues/8199
`static::method()` from a non static context (such as a class method) calls `__call`, rather than
the expected `__callStatic`. Can be fixed by using `(static fn() => static::method())()`, but the
usage of the magic method is strictly unnecessary in this case.
This commit is contained in:
Diogo Peralta Cordeiro
2022-03-13 18:23:19 +00:00
parent e1cceac150
commit 888c3798b7
32 changed files with 438 additions and 494 deletions
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52
components/Notification/Notification.php
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@@ -64,14 +64,43 @@ class Notification extends Component
/**
* Enqueues a notification for an Actor (such as person or group) which means
* it shows up in their home feed and such.
* WARNING: It's highly advisable to have flushed any relevant objects before triggering this event.
* OBSERVATION: $sender->getSubscribers() will always be pre-included, thus why $targets=[] is normal
*
* $targets should be of the shape:
* ['source' => (int|Actor)[]] // Prefer Actor whenever possible
* Example of $targets:
* [[42, $actor_alice, $actor_bob]] // Avoid repeating actors or ids
*
* @param Actor $sender The one responsible for this activity, take care not to include it in targets
* @param Activity $activity The activity responsible for the object being given to known to targets
* @param array $targets attentions, Mentions, any other source
* @param null|string $reason An optional reason explaining why this notification exists
*/
public function onNewNotification(Actor $sender, Activity $activity, array $ids_already_known = [], ?string $reason = null): bool
public function onNewNotification(Actor $sender, Activity $activity, array $targets = [], ?string $reason = null): bool
{
$targets = $activity->getNotificationTargets(ids_already_known: $ids_already_known, sender_id: $sender->getId());
if (Event::handle('NewNotificationWithTargets', [$sender, $activity, $targets, $reason]) === Event::next) {
self::notify($sender, $activity, $targets, $reason);
// Ensure targets are all actor objects and unique
$effective_targets = [];
foreach ($targets as $target) {
if (\is_int($target)) {
$target_id = $target;
$target_object = null;
} else {
$target_id = $target->getId();
$target_object = $target;
}
if (!\array_key_exists(key: $target_id, array: $effective_targets)) {
$target_object ??= Actor::getById($target_id);
$effective_targets[$target_id] = $target_object;
}
}
unset($targets);
if (Event::handle('NewNotificationStart', [$sender, $activity, $effective_targets, $reason]) === Event::next) {
self::notify($sender, $activity, $effective_targets, $reason);
}
Event::handle('NewNotificationEnd', [$sender, $activity, $effective_targets, $reason]);
return Event::next;
}
@@ -91,7 +120,8 @@ class Notification extends Component
}
/**
* Bring given Activity to Targets's attention
* Bring given Activity to Targets' knowledge.
* This will flush a Notification to DB.
*
* @return true if successful, false otherwise
*/
@@ -100,8 +130,8 @@ class Notification extends Component
$remote_targets = [];
foreach ($targets as $target) {
if ($target->getIsLocal()) {
if ($target->hasBlocked($activity->getActor())) {
Log::info("Not saving reply to actor {$target->getId()} from sender {$sender->getId()} because of a block.");
if ($target->hasBlocked($author = $activity->getActor())) {
Log::info("Not saving notification to actor {$target->getId()} from sender {$sender->getId()} because receiver blocked author {$author->getId()}.");
continue;
}
if (Event::handle('NewNotificationShould', [$activity, $target]) === Event::next) {
@@ -113,7 +143,7 @@ class Notification extends Component
}
Queue::enqueue(
payload: [$sender, $activity, $target, $reason],
queue: 'notification_local',
queue: 'NotificationLocal',
priority: true,
);
} else {
@@ -124,7 +154,7 @@ class Notification extends Component
}
// XXX: Unideal as in failures the rollback will leave behind a false notification,
// but most notifications (all) require flushing the objects first
// Should be okay as long as implementors bear this in mind
// Should be okay as long as implementations bear this in mind
try {
DB::wrapInTransaction(fn () => DB::persist(Entity\Notification::create([
'activity_id' => $activity->getId(),
@@ -132,7 +162,7 @@ class Notification extends Component
'reason' => $reason,
])));
} catch (Exception|Throwable $e) {
// We do our best not to record duplicated notifications, but it's not insane that can happen
// We do our best not to record duplicate notifications, but it's not insane that can happen
Log::error('It was attempted to record an invalid notification!', [$e]);
}
}
@@ -140,7 +170,7 @@ class Notification extends Component
if ($remote_targets !== []) {
Queue::enqueue(
payload: [$sender, $activity, $remote_targets, $reason],
queue: 'notification_remote',
queue: 'NotificationRemote',
priority: false,
);
}