mediawiki-extensions-Echo/includes/DbEchoBackend.php
Kunal Mehta f551656aa2 Remove EchoEvent::updateExtra, MWEchoBackend::updateEventExtra
Unused functions.
There is also no usecase for this, events shouldn't be altered
after creation except for bundling.

Change-Id: Id175c075d24263119f0455d99342263dd98f9410
2014-07-13 22:53:57 +00:00

313 lines
8.5 KiB
PHP

<?php
/**
* Database backend for echo notification
*/
class MWDbEchoBackend extends MWEchoBackend {
/**
* @param $row array
*/
public function createNotification( $row ) {
$dbw = MWEchoDbFactory::getDB( DB_MASTER );
$fname = __METHOD__;
$dbw->onTransactionIdle(
function() use ( $dbw, $row, $fname ) {
$dbw->startAtomic( $fname );
// reset the base if this notification has a display hash
if ( $row['notification_bundle_display_hash'] ) {
$dbw->update(
'echo_notification',
array( 'notification_bundle_base' => 0 ),
array(
'notification_user' => $row['notification_user'],
'notification_bundle_display_hash' => $row['notification_bundle_display_hash'],
'notification_bundle_base' => 1
),
$fname
);
}
$row['notification_timestamp'] = $dbw->timestamp( $row['notification_timestamp'] );
$dbw->insert( 'echo_notification', $row, $fname );
$dbw->endAtomic( $fname );
$user = User::newFromId( $row['notification_user'] );
MWEchoNotifUser::newFromUser( $user )->resetNotificationCount( DB_MASTER );
}
);
}
/**
* @param $user User the user to get notifications for
* @param $limit int The maximum number of notifications to return
* @param $continue string Used for offset
* @param $outputFormat string The output format of the notifications (web,
* email, etc.)
* @return array
*/
public function loadNotifications( $user, $limit, $continue, $outputFormat = 'web' ) {
$dbr = MWEchoDbFactory::getDB( DB_SLAVE );
$eventTypesToLoad = EchoNotificationController::getUserEnabledEvents( $user, $outputFormat );
if ( !$eventTypesToLoad ) {
return array();
}
// Look for notifications with base = 1
$conds = array(
'notification_user' => $user->getID(),
'event_type' => $eventTypesToLoad,
'notification_bundle_base' => 1
);
$offset = $this->extractQueryOffset( $continue );
// Start points are specified
if ( $offset['timestamp'] && $offset['offset'] ) {
$ts = $dbr->addQuotes( $dbr->timestamp( $offset['timestamp'] ) );
// The offset and timestamp are those of the first notification we want to return
$conds[] = "notification_timestamp < $ts OR ( notification_timestamp = $ts AND notification_event <= " . $offset['offset'] . " )";
}
$res = $dbr->select(
array( 'echo_notification', 'echo_event' ),
'*',
$conds,
__METHOD__,
array(
'ORDER BY' => 'notification_timestamp DESC, notification_event DESC',
'LIMIT' => $limit,
),
array(
'echo_event' => array( 'LEFT JOIN', 'notification_event=event_id' ),
)
);
return iterator_to_array( $res, false );
}
/**
* @param $user User
* @param $bundleHash string the bundle hash
* @param $type string
* @param $order string 'ASC'/'DESC'
* @param $limit int
* @return ResultWrapper|bool
*/
public function getRawBundleData( $user, $bundleHash, $type = 'web', $order = 'DESC', $limit = 250 ) {
$dbr = MWEchoDbFactory::getDB( DB_SLAVE );
// We only display 99+ if the number is over 100, we can do limit 250, this should be sufficient
// to return 99 distinct group iterators, avoid select count( distinct ) for the following reason:
// 1. it will not scale for large volume data
// 2. notification may have random grouping iterator
// 3. agent may be anonymous, can't do distinct over two columns: event_agent_id and event_agent_ip
if ( $type == 'web' ) {
$res = $dbr->select(
array( 'echo_notification', 'echo_event' ),
array( 'event_agent_id', 'event_agent_ip', 'event_extra', 'event_page_id' ),
array(
'notification_event=event_id',
'notification_user' => $user->getId(),
'notification_bundle_base' => 0,
'notification_bundle_display_hash' => $bundleHash
),
__METHOD__,
array( 'ORDER BY' => 'notification_timestamp ' . $order, 'LIMIT' => $limit )
);
// this would be email for now
} else {
$res = $dbr->select(
array( 'echo_email_batch', 'echo_event' ),
array( 'event_agent_id', 'event_agent_ip', 'event_extra', 'event_page_id' ),
array(
'eeb_event_id=event_id',
'eeb_user_id' => $user->getId(),
'eeb_event_hash' => $bundleHash
),
__METHOD__,
array( 'ORDER BY' => 'eeb_event_id ' . $order, 'LIMIT' => $limit )
);
}
return $res;
}
/**
* Get the last bundle stat - read_timestamp & bundle_display_hash
* @param $user User
* @param $bundleHash string The hash used to identify a set of bundle-able events
* @return ResultWrapper|bool
*/
public function getLastBundleStat( $user, $bundleHash ) {
$dbr = MWEchoDbFactory::getDB( DB_SLAVE );
$res = $dbr->selectRow(
array( 'echo_notification' ),
array( 'notification_read_timestamp', 'notification_bundle_display_hash' ),
array(
'notification_user' => $user->getId(),
'notification_bundle_hash' => $bundleHash
),
__METHOD__,
array( 'ORDER BY' => 'notification_timestamp DESC', 'LIMIT' => 1 )
);
return $res;
}
/**
* @param $row array
* @return int
*/
public function createEvent( $row ) {
$dbw = MWEchoDbFactory::getDB( DB_MASTER );
$id = $dbw->nextSequenceValue( 'echo_event_id' );
if ( $id ) {
$row['event_id'] = $id;
}
$dbw->insert( 'echo_event', $row, __METHOD__ );
if ( !$id ) {
$id = $dbw->insertId();
}
return $id;
}
/**
* @param $id int
* @param $fromMaster bool
* @return ResultWrapper
* @throws MWException
*/
public function loadEvent( $id, $fromMaster = false ) {
$db = $fromMaster ? MWEchoDbFactory::getDB( DB_MASTER ) : MWEchoDbFactory::getDB( DB_SLAVE );
$row = $db->selectRow( 'echo_event', '*', array( 'event_id' => $id ), __METHOD__ );
if ( !$row && !$fromMaster ) {
return $this->loadEvent( $id, true );
} elseif ( !$row ) {
throw new MWException( "No EchoEvent found with ID: $id" );
}
return $row;
}
/**
* @param $user User
* @param $eventIDs array
*/
public function markRead( $user, $eventIDs ) {
if ( !$eventIDs ) {
return;
}
$dbw = MWEchoDbFactory::getDB( DB_MASTER );
$dbw->update(
'echo_notification',
array( 'notification_read_timestamp' => $dbw->timestamp( wfTimestampNow() ) ),
array(
'notification_user' => $user->getId(),
'notification_event' => $eventIDs,
'notification_read_timestamp' => null,
),
__METHOD__
);
}
/**
* @param $user User
*/
public function markAllRead( $user ) {
$dbw = MWEchoDbFactory::getDB( DB_MASTER );
$dbw->update(
'echo_notification',
array( 'notification_read_timestamp' => $dbw->timestamp( wfTimestampNow() ) ),
array(
'notification_user' => $user->getId(),
'notification_read_timestamp' => NULL,
'notification_bundle_base' => 1,
),
__METHOD__
);
}
/**
* @param $user User object to check notifications for
* @param $dbSource string use master or slave storage to pull count
* @return int
*/
public function getNotificationCount( $user, $dbSource ) {
// double check
if ( !in_array( $dbSource, array( DB_SLAVE, DB_MASTER ) ) ) {
$dbSource = DB_SLAVE;
}
$eventTypesToLoad = EchoNotificationController::getUserEnabledEvents( $user, 'web' );
if ( !$eventTypesToLoad ) {
return 0;
}
global $wgEchoMaxNotificationCount;
$db = MWEchoDbFactory::getDB( $dbSource );
$res = $db->select(
array( 'echo_notification', 'echo_event' ),
array( 'notification_event' ),
array(
'notification_user' => $user->getId(),
'notification_bundle_base' => 1,
'notification_read_timestamp' => null,
'event_type' => $eventTypesToLoad,
),
__METHOD__,
array( 'LIMIT' => $wgEchoMaxNotificationCount + 1 ),
array(
'echo_event' => array( 'LEFT JOIN', 'notification_event=event_id' ),
)
);
return $db->numRows( $res );
}
/**
* IMPORTANT: should only call this function if the number of unread notification
* is reasonable, for example, unread notification count is less than the max
* display defined in $wgEchoMaxNotificationCount
* @param $user User
* @param $type string
* @return array
*/
public function getUnreadNotifications( $user, $type ) {
$dbr = MWEchoDbFactory::getDB( DB_SLAVE );
$res = $dbr->select(
array( 'echo_notification', 'echo_event' ),
array( 'notification_event' ),
array(
'notification_user' => $user->getId(),
'notification_bundle_base' => 1,
'notification_read_timestamp' => null,
'event_type' => $type,
'notification_event = event_id'
),
__METHOD__
);
$eventIds = array();
foreach ( $res as $row ) {
$eventIds[$row->notification_event] = $row->notification_event;
}
return $eventIds;
}
}