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PhabricatorCalendarNotificationEngine.php
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Mon, Dec 23, 16:34

PhabricatorCalendarNotificationEngine.php
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<?php
final class PhabricatorCalendarNotificationEngine
extends Phobject {
private $cursor;
private $notifyWindow;
public function getCursor() {
if (!$this->cursor) {
$now = PhabricatorTime::getNow();
$this->cursor = $now - phutil_units('10 minutes in seconds');
}
return $this->cursor;
}
public function setCursor($cursor) {
$this->cursor = $cursor;
return $this;
}
public function setNotifyWindow($notify_window) {
$this->notifyWindow = $notify_window;
return $this;
}
public function getNotifyWindow() {
if (!$this->notifyWindow) {
return phutil_units('15 minutes in seconds');
}
return $this->notifyWindow;
}
public function publishNotifications() {
$cursor = $this->getCursor();
$now = PhabricatorTime::getNow();
if ($cursor > $now) {
return;
}
$calendar_class = 'PhabricatorCalendarApplication';
if (!PhabricatorApplication::isClassInstalled($calendar_class)) {
return;
}
try {
$lock = PhabricatorGlobalLock::newLock('calendar.notify')
->lock(5);
} catch (PhutilLockException $ex) {
return;
}
$caught = null;
try {
$this->sendNotifications();
} catch (Exception $ex) {
$caught = $ex;
}
$lock->unlock();
// Wait a little while before checking for new notifications to send.
$this->setCursor($cursor + phutil_units('1 minute in seconds'));
if ($caught) {
throw $caught;
}
}
private function sendNotifications() {
$cursor = $this->getCursor();
$window_min = $cursor - phutil_units('16 hours in seconds');
$window_max = $cursor + phutil_units('16 hours in seconds');
$viewer = PhabricatorUser::getOmnipotentUser();
$events = id(new PhabricatorCalendarEventQuery())
->setViewer($viewer)
->withDateRange($window_min, $window_max)
->withIsCancelled(false)
->withIsImported(false)
->setGenerateGhosts(true)
->execute();
if (!$events) {
// No events are starting soon in any timezone, so there is nothing
// left to be done.
return;
}
$attendee_map = array();
foreach ($events as $key => $event) {
$notifiable_phids = array();
foreach ($event->getInvitees() as $invitee) {
if (!$invitee->isAttending()) {
continue;
}
$notifiable_phids[] = $invitee->getInviteePHID();
}
if (!$notifiable_phids) {
unset($events[$key]);
}
$attendee_map[$key] = array_fuse($notifiable_phids);
}
if (!$attendee_map) {
// None of the events have any notifiable attendees, so there is no
// one to notify of anything.
return;
}
$all_attendees = array();
foreach ($attendee_map as $key => $attendee_phids) {
foreach ($attendee_phids as $attendee_phid) {
$all_attendees[$attendee_phid] = $attendee_phid;
}
}
$user_map = id(new PhabricatorPeopleQuery())
->setViewer($viewer)
->withPHIDs($all_attendees)
->withIsDisabled(false)
->needUserSettings(true)
->execute();
$user_map = mpull($user_map, null, 'getPHID');
if (!$user_map) {
// None of the attendees are valid users: they're all imported users
// or projects or invalid or some other kind of unnotifiable entity.
return;
}
$all_event_phids = array();
foreach ($events as $key => $event) {
foreach ($event->getNotificationPHIDs() as $phid) {
$all_event_phids[$phid] = $phid;
}
}
$table = new PhabricatorCalendarNotification();
$conn = $table->establishConnection('w');
$rows = queryfx_all(
$conn,
'SELECT * FROM %T WHERE eventPHID IN (%Ls) AND targetPHID IN (%Ls)',
$table->getTableName(),
$all_event_phids,
$all_attendees);
$sent_map = array();
foreach ($rows as $row) {
$event_phid = $row['eventPHID'];
$target_phid = $row['targetPHID'];
$initial_epoch = $row['utcInitialEpoch'];
$sent_map[$event_phid][$target_phid][$initial_epoch] = $row;
}
$now = PhabricatorTime::getNow();
$notify_min = $now;
$notify_max = $now + $this->getNotifyWindow();
$notify_map = array();
foreach ($events as $key => $event) {
$initial_epoch = $event->getUTCInitialEpoch();
$event_phids = $event->getNotificationPHIDs();
// Select attendees who actually exist, and who we have not sent any
// notifications to yet.
$attendee_phids = $attendee_map[$key];
$users = array_select_keys($user_map, $attendee_phids);
foreach ($users as $user_phid => $user) {
foreach ($event_phids as $event_phid) {
if (isset($sent_map[$event_phid][$user_phid][$initial_epoch])) {
unset($users[$user_phid]);
continue 2;
}
}
}
if (!$users) {
continue;
}
// Discard attendees for whom the event start time isn't soon. Events
// may start at different times for different users, so we need to
// check every user's start time.
foreach ($users as $user_phid => $user) {
$user_datetime = $event->newStartDateTime()
->setViewerTimezone($user->getTimezoneIdentifier());
$user_epoch = $user_datetime->getEpoch();
if ($user_epoch < $notify_min || $user_epoch > $notify_max) {
unset($users[$user_phid]);
continue;
}
$view = id(new PhabricatorCalendarEventNotificationView())
->setViewer($user)
->setEvent($event)
->setDateTime($user_datetime)
->setEpoch($user_epoch);
$notify_map[$user_phid][] = $view;
}
}
$mail_list = array();
$mark_list = array();
$now = PhabricatorTime::getNow();
foreach ($notify_map as $user_phid => $events) {
$user = $user_map[$user_phid];
$locale = PhabricatorEnv::beginScopedLocale($user->getTranslation());
$caught = null;
try {
$mail_list[] = $this->newMailMessage($user, $events);
} catch (Exception $ex) {
$caught = $ex;
}
unset($locale);
if ($caught) {
throw $ex;
}
foreach ($events as $view) {
$event = $view->getEvent();
foreach ($event->getNotificationPHIDs() as $phid) {
$mark_list[] = qsprintf(
$conn,
'(%s, %s, %d, %d)',
$phid,
$user_phid,
$event->getUTCInitialEpoch(),
$now);
}
}
}
// Mark all the notifications we're about to send as delivered so we
// do not double-notify.
foreach (PhabricatorLiskDAO::chunkSQL($mark_list) as $chunk) {
queryfx(
$conn,
'INSERT IGNORE INTO %T
(eventPHID, targetPHID, utcInitialEpoch, didNotifyEpoch)
VALUES %Q',
$table->getTableName(),
$chunk);
}
foreach ($mail_list as $mail) {
$mail->saveAndSend();
}
}
private function newMailMessage(PhabricatorUser $viewer, array $events) {
$events = msort($events, 'getEpoch');
$next_event = head($events);
$body = new PhabricatorMetaMTAMailBody();
foreach ($events as $event) {
$body->addTextSection(
null,
pht(
'%s is starting in %s minute(s), at %s.',
$event->getEvent()->getName(),
$event->getDisplayMinutes(),
$event->getDisplayTime()));
$body->addLinkSection(
pht('EVENT DETAIL'),
PhabricatorEnv::getProductionURI($event->getEvent()->getURI()));
}
$next_event = head($events)->getEvent();
$subject = $next_event->getName();
if (count($events) > 1) {
$more = pht(
'(+%s more...)',
new PhutilNumber(count($events) - 1));
$subject = "{$subject} {$more}";
}
$calendar_phid = id(new PhabricatorCalendarApplication())
->getPHID();
return id(new PhabricatorMetaMTAMail())
->setSubject($subject)
->addTos(array($viewer->getPHID()))
->setSensitiveContent(false)
->setFrom($calendar_phid)
->setIsBulk(true)
->setSubjectPrefix(pht('[Calendar]'))
->setVarySubjectPrefix(pht('[Reminder]'))
->setThreadID($next_event->getPHID(), false)
->setRelatedPHID($next_event->getPHID())
->setBody($body->render())
->setHTMLBody($body->renderHTML());
}
}

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